Main

.vscode/c_cpp_properties.json

@@ -0,0 +1,22 @@
+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "C:/msys64/mingw64/include/**"
+            ],
+            "defines": [
+                "_DEBUG",
+                "UNICODE",
+                "_UNICODE"
+            ],
+            "windowsSdkVersion": "10.0.22621.0",
+            "compilerPath": "C:/msys64/mingw64/bin/g++.exe",
+            "cStandard": "c23",
+            "cppStandard": "c++23",
+            "intelliSenseMode": "windows-gcc-x64"
+        }
+    ],
+    "version": 4
+}

.vscode/launch.json

@@ -0,0 +1,25 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug Game Engine",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/build/game_engine.exe", // Path to your executable
+            "args": [], // Add arguments to pass to your program if necessary
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
+            "miDebuggerPath": "C:/msys64/mingw64/bin/gdb.exe", // Path to your GDB executable
+            "setupCommands": [
+                {
+                    "description": "Enable pretty-printing for gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                }
+            ]
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,77 @@
+{
+    "files.associations": {
+        "*.pyx": "python",
+        "*.js": "javascript",
+        "*.c": "c",
+        "array": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "cctype": "cpp",
+        "charconv": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "compare": "cpp",
+        "concepts": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "map": "cpp",
+        "set": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "format": "cpp",
+        "fstream": "cpp",
+        "initializer_list": "cpp",
+        "iomanip": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "new": "cpp",
+        "numbers": "cpp",
+        "ostream": "cpp",
+        "ranges": "cpp",
+        "span": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "text_encoding": "cpp",
+        "cinttypes": "cpp",
+        "typeinfo": "cpp",
+        "variant": "cpp",
+        "valarray": "cpp",
+        "filesystem": "cpp",
+        "codecvt": "cpp",
+        "ratio": "cpp",
+        "chrono": "cpp",
+        "condition_variable": "cpp",
+        "mutex": "cpp",
+        "semaphore": "cpp",
+        "stop_token": "cpp",
+        "thread": "cpp"
+    }
+}

.vscode/tasks.json

@@ -0,0 +1,28 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Build with Makefile",
+            "type": "shell",
+            "command": "mingw32-make",
+            "args": ["all"], // Use the "all" target from your Makefile
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "problemMatcher": ["$gcc"],
+            "detail": "Task to build the project using the provided Makefile."
+        },
+        {
+            "label": "Clean with Makefile",
+            "type": "shell",
+            "command": "mingw32-make",
+            "args": ["clean"], // Use the "clean" target from your Makefile
+            "group": {
+                "kind": "build",
+                "isDefault": false
+            },
+            "detail": "Task to clean the project using the provided Makefile."
+        }
+    ]
+}

Makefile

@@ -0,0 +1,55 @@
+# Compiler
+CC = g++
+
+# Compiler flags
+CFLAGS = -Wall -g
+
+# Paths to include directories (Adjust these paths to your installation)
+IMG_INCLUDE_DIR = include
+IMGUI_INCLUDE_DIR = imgui
+SDL2_LIB_DIR = C:/msys64/mingw64/bin
+LIB_DIR = lib
+
+# Include directories
+INCLUDE_DIRS = -I$(IMG_INCLUDE_DIR) -I$(IMGUI_INCLUDE_DIR)
+
+# Library directories
+LIB_DIRS = -L$(SDL2_LIB_DIR) -L$(LIB_DIR)
+
+# Libraries to link
+LIBS = -lmingw32 -lglfw3 -lopengl32 -lglew32 -lyaml-cpp -lcomdlg32
+
+# Source directories
+SRC_DIR = src
+IMGUI_DIR = imgui
+
+# Object directory
+OBJ_DIR = build
+
+# Source files
+SOURCES = $(wildcard $(SRC_DIR)/*.cpp) $(wildcard $(IMGUI_DIR)/*.cpp)
+
+# Object files
+OBJECTS = $(patsubst $(SRC_DIR)/%.cpp,$(OBJ_DIR)/%.o,$(SOURCES))
+OBJECTS := $(patsubst $(IMGUI_DIR)/%.cpp,$(OBJ_DIR)/%.o,$(OBJECTS))
+
+# Executable name
+EXECUTABLE = $(OBJ_DIR)/game_engine.exe
+
+# Build target
+all: $(OBJ_DIR) $(EXECUTABLE)
+
+$(OBJ_DIR):
+	mkdir $(OBJ_DIR)
+
+$(EXECUTABLE): $(OBJECTS)
+	$(CC) $(OBJECTS) -o $@ $(LIB_DIRS) $(LIBS)
+
+$(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
+	$(CC) $(CFLAGS) $(INCLUDE_DIRS) -c $< -o $@
+
+$(OBJ_DIR)/%.o: $(IMGUI_DIR)/%.cpp
+	$(CC) $(CFLAGS) $(INCLUDE_DIRS) -c $< -o $@
+
+clean:
+	del /Q $(OBJ_DIR)\*.o

assets/scenes/Scene.polys

@@ -0,0 +1,28 @@
+Entities:
+  - ID: 0
+    Name: Light
+    Components:
+      Light:
+        Type: 2
+        Intensity: 9.30000019
+        Color: [1, 1, 1]
+        Constant: 1
+        Linear: 0.0900000036
+        Quadratic: 0.0320000015
+        cutOff: 0
+        outerCutOff: 39.7900009
+        Direction: [-0.200000003, -1, -0.300000012]
+      Transform:
+        Position: [-1.70000005, -0.200000003, -0.100000001]
+        Rotation: [1.5, 2.70000005, -17.5]
+        Scale: [1, 1, 1]
+  - ID: 1
+    Name: Cube
+    Components:
+      Render:
+        MeshName: WhiteCube
+        Color: [1, 1, 1]
+      Transform:
+        Position: [-1.21370173, 1.20000005, 0]
+        Rotation: [1.34287302e-05, -41.9440002, 1.62548586e-05]
+        Scale: [1, 1, 1]

assets/scenes/light.polys

@@ -0,0 +1,18 @@
+Entities:
+  - ID: 0
+    Name: Entity 0
+    Components:
+      Light:
+        Type: 0
+        Intensity: 1
+        Color: [1, 1, 1]
+        Constant: 1
+        Linear: 0.0900000036
+        Quadratic: 0.0320000015
+        cutOff: 12.5
+        outerCutOff: 17.5
+        Direction: [-0.200000003, -1, -0.300000012]
+      Transform:
+        Position: [0, 0, 0]
+        Rotation: [0, 0, 0]
+        Scale: [1, 1, 1]

assets/scenes/scene1.polys

@@ -0,0 +1,8 @@
+Entities:
+  - ID: 0
+    Name: Entity 0
+    Components:
+      Transform:
+        Position: [0, 0, 0]
+        Rotation: [0, 0, 0]
+        Scale: [1, 1, 1]

imgui.ini

@@ -0,0 +1,59 @@
+[Window][DockSpace Window]
+Pos=0,20
+Size=1280,720
+Collapsed=0
+
+[Window][Debug##Default]
+Pos=60,60
+Size=400,400
+Collapsed=0
+
+[Window][Entity Component Tree]
+Pos=318,28
+Size=197,1161
+Collapsed=0
+DockId=0x00000005,0
+
+[Window][Game View]
+Pos=312,28
+Size=626,322
+Collapsed=0
+DockId=0x00000009,0
+
+[Window][Asset Panel]
+Pos=8,379
+Size=302,353
+Collapsed=0
+DockId=0x00000008,0
+
+[Window][Inspector]
+Pos=940,28
+Size=332,704
+Collapsed=0
+DockId=0x00000004,0
+
+[Window][Scene]
+Pos=8,28
+Size=302,349
+Collapsed=0
+DockId=0x00000007,0
+
+[Window][Info]
+Pos=312,352
+Size=626,380
+Collapsed=0
+DockId=0x0000000A,0
+
+[Docking][Data]
+DockSpace         ID=0xC746EC7D Window=0x9DF47A72 Pos=8,28 Size=1264,704 Split=X Selected=0x642CEEBB
+  DockNode        ID=0x00000003 Parent=0xC746EC7D SizeRef=1570,1161 Split=X
+    DockNode      ID=0x00000001 Parent=0x00000003 SizeRef=302,1161 Split=Y Selected=0x9D571615
+      DockNode    ID=0x00000007 Parent=0x00000001 SizeRef=580,577 Selected=0xE192E354
+      DockNode    ID=0x00000008 Parent=0x00000001 SizeRef=580,582 Selected=0x9D571615
+    DockNode      ID=0x00000002 Parent=0x00000003 SizeRef=1600,1161 Split=X
+      DockNode    ID=0x00000005 Parent=0x00000002 SizeRef=197,1161 Selected=0x4E0EE8E4
+      DockNode    ID=0x00000006 Parent=0x00000002 SizeRef=1035,1161 Split=Y Selected=0x642CEEBB
+        DockNode  ID=0x00000009 Parent=0x00000006 SizeRef=1266,779 CentralNode=1 Selected=0x642CEEBB
+        DockNode  ID=0x0000000A Parent=0x00000006 SizeRef=1266,380 Selected=0xE534E588
+  DockNode        ID=0x00000004 Parent=0xC746EC7D SizeRef=332,1161 Selected=0xE7039252
+

imgui/ImCurveEdit.cpp

@@ -0,0 +1,457 @@
+// https://github.com/CedricGuillemet/ImGuizmo
+// v1.91.3 WIP
+//
+// The MIT License(MIT)
+//
+// Copyright(c) 2021 Cedric Guillemet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+#include "ImCurveEdit.h"
+#include "imgui.h"
+#include "imgui_internal.h"
+#include <stdint.h>
+#include <set>
+#include <vector>
+
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#include <malloc.h>
+#endif
+#if !defined(_MSC_VER) && !defined(__MINGW64_VERSION_MAJOR)
+#define _malloca(x) alloca(x)
+#define _freea(x)
+#endif
+
+namespace ImCurveEdit
+{
+
+#ifndef IMGUI_DEFINE_MATH_OPERATORS
+   static ImVec2 operator+(const ImVec2& a, const ImVec2& b) {
+      return ImVec2(a.x + b.x, a.y + b.y);
+   }
+
+   static ImVec2 operator-(const ImVec2& a, const ImVec2& b) {
+      return ImVec2(a.x - b.x, a.y - b.y);
+   }
+
+   static ImVec2 operator*(const ImVec2& a, const ImVec2& b) {
+      return ImVec2(a.x * b.x, a.y * b.y);
+   }
+
+   static ImVec2 operator/(const ImVec2& a, const ImVec2& b) {
+      return ImVec2(a.x / b.x, a.y / b.y);
+   }
+
+   static ImVec2 operator*(const ImVec2& a, const float b) {
+      return ImVec2(a.x * b, a.y * b);
+   }
+#endif
+
+   static float smoothstep(float edge0, float edge1, float x)
+   {
+      x = ImClamp((x - edge0) / (edge1 - edge0), 0.0f, 1.0f);
+      return x * x * (3 - 2 * x);
+   }
+
+   static float distance(float x, float y, float x1, float y1, float x2, float y2)
+   {
+      float A = x - x1;
+      float B = y - y1;
+      float C = x2 - x1;
+      float D = y2 - y1;
+
+      float dot = A * C + B * D;
+      float len_sq = C * C + D * D;
+      float param = -1.f;
+      if (len_sq > FLT_EPSILON)
+         param = dot / len_sq;
+
+      float xx, yy;
+
+      if (param < 0.f) {
+         xx = x1;
+         yy = y1;
+      }
+      else if (param > 1.f) {
+         xx = x2;
+         yy = y2;
+      }
+      else {
+         xx = x1 + param * C;
+         yy = y1 + param * D;
+      }
+
+      float dx = x - xx;
+      float dy = y - yy;
+      return sqrtf(dx * dx + dy * dy);
+   }
+
+   static int DrawPoint(ImDrawList* draw_list, ImVec2 pos, const ImVec2 size, const ImVec2 offset, bool edited)
+   {
+      int ret = 0;
+      ImGuiIO& io = ImGui::GetIO();
+
+      static const ImVec2 localOffsets[4] = { ImVec2(1,0), ImVec2(0,1), ImVec2(-1,0), ImVec2(0,-1) };
+      ImVec2 offsets[4];
+      for (int i = 0; i < 4; i++)
+      {
+         offsets[i] = pos * size + localOffsets[i] * 4.5f + offset;
+      }
+
+      const ImVec2 center = pos * size + offset;
+      const ImRect anchor(center - ImVec2(5, 5), center + ImVec2(5, 5));
+      draw_list->AddConvexPolyFilled(offsets, 4, 0xFF000000);
+      if (anchor.Contains(io.MousePos))
+      {
+         ret = 1;
+         if (io.MouseDown[0])
+            ret = 2;
+      }
+      if (edited)
+         draw_list->AddPolyline(offsets, 4, 0xFFFFFFFF, true, 3.0f);
+      else if (ret)
+         draw_list->AddPolyline(offsets, 4, 0xFF80B0FF, true, 2.0f);
+      else
+         draw_list->AddPolyline(offsets, 4, 0xFF0080FF, true, 2.0f);
+
+      return ret;
+   }
+
+   int Edit(Delegate& delegate, const ImVec2& size, unsigned int id, const ImRect* clippingRect, ImVector<EditPoint>* selectedPoints)
+   {
+      static bool selectingQuad = false;
+      static ImVec2 quadSelection;
+      static int overCurve = -1;
+      static int movingCurve = -1;
+      static bool scrollingV = false;
+      static std::set<EditPoint> selection;
+      static bool overSelectedPoint = false;
+
+      int ret = 0;
+
+      ImGuiIO& io = ImGui::GetIO();
+      ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
+      ImGui::PushStyleColor(ImGuiCol_Border, 0);
+      ImGui::BeginChild(id, size, ImGuiChildFlags_FrameStyle);
+      delegate.focused = ImGui::IsWindowFocused();
+      ImDrawList* draw_list = ImGui::GetWindowDrawList();
+      if (clippingRect)
+         draw_list->PushClipRect(clippingRect->Min, clippingRect->Max, true);
+
+      const ImVec2 offset = ImGui::GetCursorScreenPos() + ImVec2(0.f, size.y);
+      const ImVec2 ssize(size.x, -size.y);
+      const ImRect container(offset + ImVec2(0.f, ssize.y), offset + ImVec2(ssize.x, 0.f));
+      ImVec2& min = delegate.GetMin();
+      ImVec2& max = delegate.GetMax();
+
+      // handle zoom and VScroll
+      if (container.Contains(io.MousePos))
+      {
+         if (fabsf(io.MouseWheel) > FLT_EPSILON)
+         {
+            const float r = (io.MousePos.y - offset.y) / ssize.y;
+            float ratioY = ImLerp(min.y, max.y, r);
+            auto scaleValue = [&](float v) {
+               v -= ratioY;
+               v *= (1.f - io.MouseWheel * 0.05f);
+               v += ratioY;
+               return v;
+            };
+            min.y = scaleValue(min.y);
+            max.y = scaleValue(max.y);
+         }
+         if (!scrollingV && ImGui::IsMouseDown(2))
+         {
+            scrollingV = true;
+         }
+      }
+      ImVec2 range = max - min + ImVec2(1.f, 0.f);  // +1 because of inclusive last frame
+
+      const ImVec2 viewSize(size.x, -size.y);
+      const ImVec2 sizeOfPixel = ImVec2(1.f, 1.f) / viewSize;
+      const size_t curveCount = delegate.GetCurveCount();
+
+      if (scrollingV)
+      {
+         float deltaH = io.MouseDelta.y * range.y * sizeOfPixel.y;
+         min.y -= deltaH;
+         max.y -= deltaH;
+         if (!ImGui::IsMouseDown(2))
+            scrollingV = false;
+      }
+
+      draw_list->AddRectFilled(offset, offset + ssize, delegate.GetBackgroundColor());
+
+      auto pointToRange = [&](ImVec2 pt) { return (pt - min) / range; };
+      auto rangeToPoint = [&](ImVec2 pt) { return (pt * range) + min; };
+
+      draw_list->AddLine(ImVec2(-1.f, -min.y / range.y) * viewSize + offset, ImVec2(1.f, -min.y / range.y) * viewSize + offset, 0xFF000000, 1.5f);
+      bool overCurveOrPoint = false;
+
+      int localOverCurve = -1;
+      // make sure highlighted curve is rendered last
+      int* curvesIndex = (int*)_malloca(sizeof(int) * curveCount);
+      for (size_t c = 0; c < curveCount; c++)
+         curvesIndex[c] = int(c);
+      int highLightedCurveIndex = -1;
+      if (overCurve != -1 && curveCount)
+      {
+         ImSwap(curvesIndex[overCurve], curvesIndex[curveCount - 1]);
+         highLightedCurveIndex = overCurve;
+      }
+
+      for (size_t cur = 0; cur < curveCount; cur++)
+      {
+         int c = curvesIndex[cur];
+         if (!delegate.IsVisible(c))
+            continue;
+         const size_t ptCount = delegate.GetPointCount(c);
+         if (ptCount < 1)
+            continue;
+         CurveType curveType = delegate.GetCurveType(c);
+         if (curveType == CurveNone)
+            continue;
+         const ImVec2* pts = delegate.GetPoints(c);
+         uint32_t curveColor = delegate.GetCurveColor(c);
+         if ((c == highLightedCurveIndex && selection.empty() && !selectingQuad) || movingCurve == c)
+            curveColor = 0xFFFFFFFF;
+
+         for (size_t p = 0; p < ptCount - 1; p++)
+         {
+            const ImVec2 p1 = pointToRange(pts[p]);
+            const ImVec2 p2 = pointToRange(pts[p + 1]);
+
+            if (curveType == CurveSmooth || curveType == CurveLinear)
+            {
+               size_t subStepCount = (curveType == CurveSmooth) ? 20 : 2;
+               float step = 1.f / float(subStepCount - 1);
+               for (size_t substep = 0; substep < subStepCount - 1; substep++)
+               {
+                  float t = float(substep) * step;
+
+                  const ImVec2 sp1 = ImLerp(p1, p2, t);
+                  const ImVec2 sp2 = ImLerp(p1, p2, t + step);
+
+                  const float rt1 = smoothstep(p1.x, p2.x, sp1.x);
+                  const float rt2 = smoothstep(p1.x, p2.x, sp2.x);
+
+                  const ImVec2 pos1 = ImVec2(sp1.x, ImLerp(p1.y, p2.y, rt1)) * viewSize + offset;
+                  const ImVec2 pos2 = ImVec2(sp2.x, ImLerp(p1.y, p2.y, rt2)) * viewSize + offset;
+
+                  if (distance(io.MousePos.x, io.MousePos.y, pos1.x, pos1.y, pos2.x, pos2.y) < 8.f && !scrollingV)
+                  {
+                     localOverCurve = int(c);
+                     overCurve = int(c);
+                     overCurveOrPoint = true;
+                  }
+
+                  draw_list->AddLine(pos1, pos2, curveColor, 1.3f);
+               } // substep
+            }
+            else if (curveType == CurveDiscrete)
+            {
+               ImVec2 dp1 = p1 * viewSize + offset;
+               ImVec2 dp2 = ImVec2(p2.x, p1.y) * viewSize + offset;
+               ImVec2 dp3 = p2 * viewSize + offset;
+               draw_list->AddLine(dp1, dp2, curveColor, 1.3f);
+               draw_list->AddLine(dp2, dp3, curveColor, 1.3f);
+
+               if ((distance(io.MousePos.x, io.MousePos.y, dp1.x, dp1.y, dp3.x, dp1.y) < 8.f ||
+                  distance(io.MousePos.x, io.MousePos.y, dp3.x, dp1.y, dp3.x, dp3.y) < 8.f)
+                  /*&& localOverCurve == -1*/)
+               {
+                  localOverCurve = int(c);
+                  overCurve = int(c);
+                  overCurveOrPoint = true;
+               }
+            }
+         } // point loop
+
+         for (size_t p = 0; p < ptCount; p++)
+         {
+            const int drawState = DrawPoint(draw_list, pointToRange(pts[p]), viewSize, offset, (selection.find({ int(c), int(p) }) != selection.end() && movingCurve == -1 && !scrollingV));
+            if (drawState && movingCurve == -1 && !selectingQuad)
+            {
+               overCurveOrPoint = true;
+               overSelectedPoint = true;
+               overCurve = -1;
+               if (drawState == 2)
+               {
+                  if (!io.KeyShift && selection.find({ int(c), int(p) }) == selection.end())
+                     selection.clear();
+                  selection.insert({ int(c), int(p) });
+               }
+            }
+         }
+      } // curves loop
+
+      if (localOverCurve == -1)
+         overCurve = -1;
+
+      // move selection
+      static bool pointsMoved = false;
+      static ImVec2 mousePosOrigin;
+      static std::vector<ImVec2> originalPoints;
+      if (overSelectedPoint && io.MouseDown[0])
+      {
+         if ((fabsf(io.MouseDelta.x) > 0.f || fabsf(io.MouseDelta.y) > 0.f) && !selection.empty())
+         {
+            if (!pointsMoved)
+            {
+               delegate.BeginEdit(0);
+               mousePosOrigin = io.MousePos;
+               originalPoints.resize(selection.size());
+               int index = 0;
+               for (auto& sel : selection)
+               {
+                  const ImVec2* pts = delegate.GetPoints(sel.curveIndex);
+                  originalPoints[index++] = pts[sel.pointIndex];
+               }
+            }
+            pointsMoved = true;
+            ret = 1;
+            auto prevSelection = selection;
+            int originalIndex = 0;
+            for (auto& sel : prevSelection)
+            {
+               const ImVec2 p = rangeToPoint(pointToRange(originalPoints[originalIndex]) + (io.MousePos - mousePosOrigin) * sizeOfPixel);
+               const int newIndex = delegate.EditPoint(sel.curveIndex, sel.pointIndex, p);
+               if (newIndex != sel.pointIndex)
+               {
+                  selection.erase(sel);
+                  selection.insert({ sel.curveIndex, newIndex });
+               }
+               originalIndex++;
+            }
+         }
+      }
+
+      if (overSelectedPoint && !io.MouseDown[0])
+      {
+         overSelectedPoint = false;
+         if (pointsMoved)
+         {
+            pointsMoved = false;
+            delegate.EndEdit();
+         }
+      }
+
+      // add point
+      if (overCurve != -1 && io.MouseDoubleClicked[0])
+      {
+         const ImVec2 np = rangeToPoint((io.MousePos - offset) / viewSize);
+         delegate.BeginEdit(overCurve);
+         delegate.AddPoint(overCurve, np);
+         delegate.EndEdit();
+         ret = 1;
+      }
+
+      // move curve
+
+      if (movingCurve != -1)
+      {
+         const size_t ptCount = delegate.GetPointCount(movingCurve);
+         const ImVec2* pts = delegate.GetPoints(movingCurve);
+         if (!pointsMoved)
+         {
+            mousePosOrigin = io.MousePos;
+            pointsMoved = true;
+            originalPoints.resize(ptCount);
+            for (size_t index = 0; index < ptCount; index++)
+            {
+               originalPoints[index] = pts[index];
+            }
+         }
+         if (ptCount >= 1)
+         {
+            for (size_t p = 0; p < ptCount; p++)
+            {
+               delegate.EditPoint(movingCurve, int(p), rangeToPoint(pointToRange(originalPoints[p]) + (io.MousePos - mousePosOrigin) * sizeOfPixel));
+            }
+            ret = 1;
+         }
+         if (!io.MouseDown[0])
+         {
+            movingCurve = -1;
+            pointsMoved = false;
+            delegate.EndEdit();
+         }
+      }
+      if (movingCurve == -1 && overCurve != -1 && ImGui::IsMouseClicked(0) && selection.empty() && !selectingQuad)
+      {
+         movingCurve = overCurve;
+         delegate.BeginEdit(overCurve);
+      }
+
+      // quad selection
+      if (selectingQuad)
+      {
+         const ImVec2 bmin = ImMin(quadSelection, io.MousePos);
+         const ImVec2 bmax = ImMax(quadSelection, io.MousePos);
+         draw_list->AddRectFilled(bmin, bmax, 0x40FF0000, 1.f);
+         draw_list->AddRect(bmin, bmax, 0xFFFF0000, 1.f);
+         const ImRect selectionQuad(bmin, bmax);
+         if (!io.MouseDown[0])
+         {
+            if (!io.KeyShift)
+               selection.clear();
+            // select everythnig is quad
+            for (size_t c = 0; c < curveCount; c++)
+            {
+               if (!delegate.IsVisible(c))
+                  continue;
+
+               const size_t ptCount = delegate.GetPointCount(c);
+               if (ptCount < 1)
+                  continue;
+
+               const ImVec2* pts = delegate.GetPoints(c);
+               for (size_t p = 0; p < ptCount; p++)
+               {
+                  const ImVec2 center = pointToRange(pts[p]) * viewSize + offset;
+                  if (selectionQuad.Contains(center))
+                     selection.insert({ int(c), int(p) });
+               }
+            }
+            // done
+            selectingQuad = false;
+         }
+      }
+      if (!overCurveOrPoint && ImGui::IsMouseClicked(0) && !selectingQuad && movingCurve == -1 && !overSelectedPoint && container.Contains(io.MousePos))
+      {
+         selectingQuad = true;
+         quadSelection = io.MousePos;
+      }
+      if (clippingRect)
+         draw_list->PopClipRect();
+
+      ImGui::EndChild();
+      ImGui::PopStyleVar();
+      ImGui::PopStyleColor(1);
+
+      if (selectedPoints)
+      {
+         selectedPoints->resize(int(selection.size()));
+         int index = 0;
+         for (auto& point : selection)
+            (*selectedPoints)[index++] = point;
+      }
+      return ret;
+   }
+}

imgui/ImGradient.cpp

@@ -0,0 +1,116 @@
+// https://github.com/CedricGuillemet/ImGuizmo
+// v1.91.3 WIP
+//
+// The MIT License(MIT)
+//
+// Copyright(c) 2021 Cedric Guillemet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+#include "ImGradient.h"
+#include "imgui.h"
+#include "imgui_internal.h"
+
+namespace ImGradient
+{
+#ifndef IMGUI_DEFINE_MATH_OPERATORS
+   static inline ImVec2 operator*(const ImVec2& lhs, const float rhs) { return ImVec2(lhs.x * rhs, lhs.y * rhs); }
+   static inline ImVec2 operator/(const ImVec2& lhs, const float rhs) { return ImVec2(lhs.x / rhs, lhs.y / rhs); }
+   static inline ImVec2 operator+(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x + rhs.x, lhs.y + rhs.y); }
+   static inline ImVec2 operator-(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x - rhs.x, lhs.y - rhs.y); }
+   static inline ImVec2 operator*(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x * rhs.x, lhs.y * rhs.y); }
+   static inline ImVec2 operator/(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x / rhs.x, lhs.y / rhs.y); }
+#endif
+
+   static int DrawPoint(ImDrawList* draw_list, ImVec4 color, const ImVec2 size, bool editing, ImVec2 pos)
+   {
+      ImGuiIO& io = ImGui::GetIO();
+
+      ImVec2 p1 = ImLerp(pos, ImVec2(pos + ImVec2(size.x - size.y, 0.f)), color.w) + ImVec2(3, 3);
+      ImVec2 p2 = ImLerp(pos + ImVec2(size.y, size.y), ImVec2(pos + size), color.w) - ImVec2(3, 3);
+      ImRect rc(p1, p2);
+
+      color.w = 1.f;
+      draw_list->AddRectFilled(p1, p2, ImColor(color));
+      if (editing)
+         draw_list->AddRect(p1, p2, 0xFFFFFFFF, 2.f, 15, 2.5f);
+      else
+         draw_list->AddRect(p1, p2, 0x80FFFFFF, 2.f, 15, 1.25f);
+
+      if (rc.Contains(io.MousePos))
+      {
+         if (io.MouseClicked[0])
+            return 2;
+         return 1;
+      }
+      return 0;
+   }
+
+   bool Edit(Delegate& delegate, const ImVec2& size, int& selection)
+   {
+      bool ret = false;
+      ImGuiIO& io = ImGui::GetIO();
+      ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
+      ImGui::BeginChild(137, size, ImGuiChildFlags_FrameStyle);
+
+      ImDrawList* draw_list = ImGui::GetWindowDrawList();
+      const ImVec2 offset = ImGui::GetCursorScreenPos();
+
+      const ImVec4* pts = delegate.GetPoints();
+      static int currentSelection = -1;
+      static int movingPt = -1;
+      if (currentSelection >= int(delegate.GetPointCount()))
+         currentSelection = -1;
+      if (movingPt != -1)
+      {
+         ImVec4 current = pts[movingPt];
+         current.w += io.MouseDelta.x / size.x;
+         current.w = ImClamp(current.w, 0.f, 1.f);
+         delegate.EditPoint(movingPt, current);
+         ret = true;
+         if (!io.MouseDown[0])
+            movingPt = -1;
+      }
+      for (size_t i = 0; i < delegate.GetPointCount(); i++)
+      {
+         int ptSel = DrawPoint(draw_list, pts[i], size, i == currentSelection, offset);
+         if (ptSel == 2)
+         {
+            currentSelection = int(i);
+            ret = true;
+         }
+         if (ptSel == 1 && io.MouseDown[0] && movingPt == -1)
+         {
+            movingPt = int(i);
+         }
+      }
+      ImRect rc(offset, offset + size);
+      if (rc.Contains(io.MousePos) && io.MouseDoubleClicked[0])
+      {
+         float t = (io.MousePos.x - offset.x) / size.x;
+         delegate.AddPoint(delegate.GetPoint(t));
+         ret = true;
+      }
+      ImGui::EndChild();
+      ImGui::PopStyleVar();
+
+      selection = currentSelection;
+      return ret;
+   }
+}

imgui/ImSequencer.cpp

@@ -0,0 +1,695 @@
+// https://github.com/CedricGuillemet/ImGuizmo
+// v1.91.3 WIP
+//
+// The MIT License(MIT)
+//
+// Copyright(c) 2021 Cedric Guillemet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+#include "ImSequencer.h"
+#include "imgui.h"
+#include "imgui_internal.h"
+#include <cstdlib>
+
+namespace ImSequencer
+{
+#ifndef IMGUI_DEFINE_MATH_OPERATORS
+   static ImVec2 operator+(const ImVec2& a, const ImVec2& b) {
+      return ImVec2(a.x + b.x, a.y + b.y);
+   }
+#endif
+   static bool SequencerAddDelButton(ImDrawList* draw_list, ImVec2 pos, bool add = true)
+   {
+      ImGuiIO& io = ImGui::GetIO();
+      ImRect btnRect(pos, ImVec2(pos.x + 16, pos.y + 16));
+      bool overBtn = btnRect.Contains(io.MousePos);
+      bool containedClick = overBtn && btnRect.Contains(io.MouseClickedPos[0]);
+      bool clickedBtn = containedClick && io.MouseReleased[0];
+      int btnColor = overBtn ? 0xAAEAFFAA : 0x77A3B2AA;
+      if (containedClick && io.MouseDownDuration[0] > 0)
+         btnRect.Expand(2.0f);
+
+      float midy = pos.y + 16 / 2 - 0.5f;
+      float midx = pos.x + 16 / 2 - 0.5f;
+      draw_list->AddRect(btnRect.Min, btnRect.Max, btnColor, 4);
+      draw_list->AddLine(ImVec2(btnRect.Min.x + 3, midy), ImVec2(btnRect.Max.x - 3, midy), btnColor, 2);
+      if (add)
+         draw_list->AddLine(ImVec2(midx, btnRect.Min.y + 3), ImVec2(midx, btnRect.Max.y - 3), btnColor, 2);
+      return clickedBtn;
+   }
+
+   bool Sequencer(SequenceInterface* sequence, int* currentFrame, bool* expanded, int* selectedEntry, int* firstFrame, int sequenceOptions)
+   {
+      bool ret = false;
+      ImGuiIO& io = ImGui::GetIO();
+      int cx = (int)(io.MousePos.x);
+      int cy = (int)(io.MousePos.y);
+      static float framePixelWidth = 10.f;
+      static float framePixelWidthTarget = 10.f;
+      int legendWidth = 200;
+
+      static int movingEntry = -1;
+      static int movingPos = -1;
+      static int movingPart = -1;
+      int delEntry = -1;
+      int dupEntry = -1;
+      int ItemHeight = 20;
+
+      bool popupOpened = false;
+      int sequenceCount = sequence->GetItemCount();
+      if (!sequenceCount)
+         return false;
+      ImGui::BeginGroup();
+
+      ImDrawList* draw_list = ImGui::GetWindowDrawList();
+      ImVec2 canvas_pos = ImGui::GetCursorScreenPos();            // ImDrawList API uses screen coordinates!
+      ImVec2 canvas_size = ImGui::GetContentRegionAvail();        // Resize canvas to what's available
+      int firstFrameUsed = firstFrame ? *firstFrame : 0;
+
+
+      int controlHeight = sequenceCount * ItemHeight;
+      for (int i = 0; i < sequenceCount; i++)
+         controlHeight += int(sequence->GetCustomHeight(i));
+      int frameCount = ImMax(sequence->GetFrameMax() - sequence->GetFrameMin(), 1);
+
+      static bool MovingScrollBar = false;
+      static bool MovingCurrentFrame = false;
+      struct CustomDraw
+      {
+         int index;
+         ImRect customRect;
+         ImRect legendRect;
+         ImRect clippingRect;
+         ImRect legendClippingRect;
+      };
+      ImVector<CustomDraw> customDraws;
+      ImVector<CustomDraw> compactCustomDraws;
+      // zoom in/out
+      const int visibleFrameCount = (int)floorf((canvas_size.x - legendWidth) / framePixelWidth);
+      const float barWidthRatio = ImMin(visibleFrameCount / (float)frameCount, 1.f);
+      const float barWidthInPixels = barWidthRatio * (canvas_size.x - legendWidth);
+
+      ImRect regionRect(canvas_pos, canvas_pos + canvas_size);
+
+      static bool panningView = false;
+      static ImVec2 panningViewSource;
+      static int panningViewFrame;
+      if (ImGui::IsWindowFocused() && io.KeyAlt && io.MouseDown[2])
+      {
+         if (!panningView)
+         {
+            panningViewSource = io.MousePos;
+            panningView = true;
+            panningViewFrame = *firstFrame;
+         }
+         *firstFrame = panningViewFrame - int((io.MousePos.x - panningViewSource.x) / framePixelWidth);
+         *firstFrame = ImClamp(*firstFrame, sequence->GetFrameMin(), sequence->GetFrameMax() - visibleFrameCount);
+      }
+      if (panningView && !io.MouseDown[2])
+      {
+         panningView = false;
+      }
+      framePixelWidthTarget = ImClamp(framePixelWidthTarget, 0.1f, 50.f);
+
+      framePixelWidth = ImLerp(framePixelWidth, framePixelWidthTarget, 0.33f);
+
+      frameCount = sequence->GetFrameMax() - sequence->GetFrameMin();
+      if (visibleFrameCount >= frameCount && firstFrame)
+         *firstFrame = sequence->GetFrameMin();
+
+
+      // --
+      if (expanded && !*expanded)
+      {
+         ImGui::InvisibleButton("canvas", ImVec2(canvas_size.x - canvas_pos.x, (float)ItemHeight));
+         draw_list->AddRectFilled(canvas_pos, ImVec2(canvas_size.x + canvas_pos.x, canvas_pos.y + ItemHeight), 0xFF3D3837, 0);
+         char tmps[512];
+         ImFormatString(tmps, IM_ARRAYSIZE(tmps), sequence->GetCollapseFmt(), frameCount, sequenceCount);
+         draw_list->AddText(ImVec2(canvas_pos.x + 26, canvas_pos.y + 2), 0xFFFFFFFF, tmps);
+      }
+      else
+      {
+         bool hasScrollBar(true);
+         /*
+         int framesPixelWidth = int(frameCount * framePixelWidth);
+         if ((framesPixelWidth + legendWidth) >= canvas_size.x)
+         {
+             hasScrollBar = true;
+         }
+         */
+         // test scroll area
+         ImVec2 headerSize(canvas_size.x, (float)ItemHeight);
+         ImVec2 scrollBarSize(canvas_size.x, 14.f);
+         ImGui::InvisibleButton("topBar", headerSize);
+         draw_list->AddRectFilled(canvas_pos, canvas_pos + headerSize, 0xFFFF0000, 0);
+         ImVec2 childFramePos = ImGui::GetCursorScreenPos();
+         ImVec2 childFrameSize(canvas_size.x, canvas_size.y - 8.f - headerSize.y - (hasScrollBar ? scrollBarSize.y : 0));
+         ImGui::PushStyleColor(ImGuiCol_FrameBg, 0);
+         ImGui::BeginChild(889, childFrameSize, ImGuiChildFlags_FrameStyle);
+         sequence->focused = ImGui::IsWindowFocused();
+         ImGui::InvisibleButton("contentBar", ImVec2(canvas_size.x, float(controlHeight)));
+         const ImVec2 contentMin = ImGui::GetItemRectMin();
+         const ImVec2 contentMax = ImGui::GetItemRectMax();
+         const ImRect contentRect(contentMin, contentMax);
+         const float contentHeight = contentMax.y - contentMin.y;
+
+         // full background
+         draw_list->AddRectFilled(canvas_pos, canvas_pos + canvas_size, 0xFF242424, 0);
+
+         // current frame top
+         ImRect topRect(ImVec2(canvas_pos.x + legendWidth, canvas_pos.y), ImVec2(canvas_pos.x + canvas_size.x, canvas_pos.y + ItemHeight));
+
+         if (!MovingCurrentFrame && !MovingScrollBar && movingEntry == -1 && sequenceOptions & SEQUENCER_CHANGE_FRAME && currentFrame && *currentFrame >= 0 && topRect.Contains(io.MousePos) && io.MouseDown[0])
+         {
+            MovingCurrentFrame = true;
+         }
+         if (MovingCurrentFrame)
+         {
+            if (frameCount)
+            {
+               *currentFrame = (int)((io.MousePos.x - topRect.Min.x) / framePixelWidth) + firstFrameUsed;
+               if (*currentFrame < sequence->GetFrameMin())
+                  *currentFrame = sequence->GetFrameMin();
+               if (*currentFrame >= sequence->GetFrameMax())
+                  *currentFrame = sequence->GetFrameMax();
+            }
+            if (!io.MouseDown[0])
+               MovingCurrentFrame = false;
+         }
+
+         //header
+         draw_list->AddRectFilled(canvas_pos, ImVec2(canvas_size.x + canvas_pos.x, canvas_pos.y + ItemHeight), 0xFF3D3837, 0);
+         if (sequenceOptions & SEQUENCER_ADD)
+         {
+            if (SequencerAddDelButton(draw_list, ImVec2(canvas_pos.x + legendWidth - ItemHeight, canvas_pos.y + 2), true))
+               ImGui::OpenPopup("addEntry");
+
+            if (ImGui::BeginPopup("addEntry"))
+            {
+               for (int i = 0; i < sequence->GetItemTypeCount(); i++)
+                  if (ImGui::Selectable(sequence->GetItemTypeName(i)))
+                  {
+                     sequence->Add(i);
+                     *selectedEntry = sequence->GetItemCount() - 1;
+                  }
+
+               ImGui::EndPopup();
+               popupOpened = true;
+            }
+         }
+
+         //header frame number and lines
+         int modFrameCount = 10;
+         int frameStep = 1;
+         while ((modFrameCount * framePixelWidth) < 150)
+         {
+            modFrameCount *= 2;
+            frameStep *= 2;
+         };
+         int halfModFrameCount = modFrameCount / 2;
+
+         auto drawLine = [&](int i, int regionHeight) {
+            bool baseIndex = ((i % modFrameCount) == 0) || (i == sequence->GetFrameMax() || i == sequence->GetFrameMin());
+            bool halfIndex = (i % halfModFrameCount) == 0;
+            int px = (int)canvas_pos.x + int(i * framePixelWidth) + legendWidth - int(firstFrameUsed * framePixelWidth);
+            int tiretStart = baseIndex ? 4 : (halfIndex ? 10 : 14);
+            int tiretEnd = baseIndex ? regionHeight : ItemHeight;
+
+            if (px <= (canvas_size.x + canvas_pos.x) && px >= (canvas_pos.x + legendWidth))
+            {
+               draw_list->AddLine(ImVec2((float)px, canvas_pos.y + (float)tiretStart), ImVec2((float)px, canvas_pos.y + (float)tiretEnd - 1), 0xFF606060, 1);
+
+               draw_list->AddLine(ImVec2((float)px, canvas_pos.y + (float)ItemHeight), ImVec2((float)px, canvas_pos.y + (float)regionHeight - 1), 0x30606060, 1);
+            }
+
+            if (baseIndex && px > (canvas_pos.x + legendWidth))
+            {
+               char tmps[512];
+               ImFormatString(tmps, IM_ARRAYSIZE(tmps), "%d", i);
+               draw_list->AddText(ImVec2((float)px + 3.f, canvas_pos.y), 0xFFBBBBBB, tmps);
+            }
+
+         };
+
+         auto drawLineContent = [&](int i, int /*regionHeight*/) {
+            int px = (int)canvas_pos.x + int(i * framePixelWidth) + legendWidth - int(firstFrameUsed * framePixelWidth);
+            int tiretStart = int(contentMin.y);
+            int tiretEnd = int(contentMax.y);
+
+            if (px <= (canvas_size.x + canvas_pos.x) && px >= (canvas_pos.x + legendWidth))
+            {
+               //draw_list->AddLine(ImVec2((float)px, canvas_pos.y + (float)tiretStart), ImVec2((float)px, canvas_pos.y + (float)tiretEnd - 1), 0xFF606060, 1);
+
+               draw_list->AddLine(ImVec2(float(px), float(tiretStart)), ImVec2(float(px), float(tiretEnd)), 0x30606060, 1);
+            }
+         };
+         for (int i = sequence->GetFrameMin(); i <= sequence->GetFrameMax(); i += frameStep)
+         {
+            drawLine(i, ItemHeight);
+         }
+         drawLine(sequence->GetFrameMin(), ItemHeight);
+         drawLine(sequence->GetFrameMax(), ItemHeight);
+         /*
+                  draw_list->AddLine(canvas_pos, ImVec2(canvas_pos.x, canvas_pos.y + controlHeight), 0xFF000000, 1);
+                  draw_list->AddLine(ImVec2(canvas_pos.x, canvas_pos.y + ItemHeight), ImVec2(canvas_size.x, canvas_pos.y + ItemHeight), 0xFF000000, 1);
+                  */
+                  // clip content
+
+         draw_list->PushClipRect(childFramePos, childFramePos + childFrameSize, true);
+
+         // draw item names in the legend rect on the left
+         size_t customHeight = 0;
+         for (int i = 0; i < sequenceCount; i++)
+         {
+            int type;
+            sequence->Get(i, NULL, NULL, &type, NULL);
+            ImVec2 tpos(contentMin.x + 3, contentMin.y + i * ItemHeight + 2 + customHeight);
+            draw_list->AddText(tpos, 0xFFFFFFFF, sequence->GetItemLabel(i));
+
+            if (sequenceOptions & SEQUENCER_DEL)
+            {
+               if (SequencerAddDelButton(draw_list, ImVec2(contentMin.x + legendWidth - ItemHeight + 2 - 10, tpos.y + 2), false))
+                  delEntry = i;
+
+               if (SequencerAddDelButton(draw_list, ImVec2(contentMin.x + legendWidth - ItemHeight - ItemHeight + 2 - 10, tpos.y + 2), true))
+                  dupEntry = i;
+            }
+            customHeight += sequence->GetCustomHeight(i);
+         }
+
+         // slots background
+         customHeight = 0;
+         for (int i = 0; i < sequenceCount; i++)
+         {
+            unsigned int col = (i & 1) ? 0xFF3A3636 : 0xFF413D3D;
+
+            size_t localCustomHeight = sequence->GetCustomHeight(i);
+            ImVec2 pos = ImVec2(contentMin.x + legendWidth, contentMin.y + ItemHeight * i + 1 + customHeight);
+            ImVec2 sz = ImVec2(canvas_size.x + canvas_pos.x, pos.y + ItemHeight - 1 + localCustomHeight);
+            if (!popupOpened && cy >= pos.y && cy < pos.y + (ItemHeight + localCustomHeight) && movingEntry == -1 && cx>contentMin.x && cx < contentMin.x + canvas_size.x)
+            {
+               col += 0x80201008;
+               pos.x -= legendWidth;
+            }
+            draw_list->AddRectFilled(pos, sz, col, 0);
+            customHeight += localCustomHeight;
+         }
+
+         draw_list->PushClipRect(childFramePos + ImVec2(float(legendWidth), 0.f), childFramePos + childFrameSize, true);
+
+         // vertical frame lines in content area
+         for (int i = sequence->GetFrameMin(); i <= sequence->GetFrameMax(); i += frameStep)
+         {
+            drawLineContent(i, int(contentHeight));
+         }
+         drawLineContent(sequence->GetFrameMin(), int(contentHeight));
+         drawLineContent(sequence->GetFrameMax(), int(contentHeight));
+
+         // selection
+         bool selected = selectedEntry && (*selectedEntry >= 0);
+         if (selected)
+         {
+            customHeight = 0;
+            for (int i = 0; i < *selectedEntry; i++)
+               customHeight += sequence->GetCustomHeight(i);
+            draw_list->AddRectFilled(ImVec2(contentMin.x, contentMin.y + ItemHeight * *selectedEntry + customHeight), ImVec2(contentMin.x + canvas_size.x, contentMin.y + ItemHeight * (*selectedEntry + 1) + customHeight), 0x801080FF, 1.f);
+         }
+
+         // slots
+         customHeight = 0;
+         for (int i = 0; i < sequenceCount; i++)
+         {
+            int* start, * end;
+            unsigned int color;
+            sequence->Get(i, &start, &end, NULL, &color);
+            size_t localCustomHeight = sequence->GetCustomHeight(i);
+
+            ImVec2 pos = ImVec2(contentMin.x + legendWidth - firstFrameUsed * framePixelWidth, contentMin.y + ItemHeight * i + 1 + customHeight);
+            ImVec2 slotP1(pos.x + *start * framePixelWidth, pos.y + 2);
+            ImVec2 slotP2(pos.x + *end * framePixelWidth + framePixelWidth, pos.y + ItemHeight - 2);
+            ImVec2 slotP3(pos.x + *end * framePixelWidth + framePixelWidth, pos.y + ItemHeight - 2 + localCustomHeight);
+            unsigned int slotColor = color | 0xFF000000;
+            unsigned int slotColorHalf = (color & 0xFFFFFF) | 0x40000000;
+
+            if (slotP1.x <= (canvas_size.x + contentMin.x) && slotP2.x >= (contentMin.x + legendWidth))
+            {
+               draw_list->AddRectFilled(slotP1, slotP3, slotColorHalf, 2);
+               draw_list->AddRectFilled(slotP1, slotP2, slotColor, 2);
+            }
+            if (ImRect(slotP1, slotP2).Contains(io.MousePos) && io.MouseDoubleClicked[0])
+            {
+               sequence->DoubleClick(i);
+            }
+            // Ensure grabbable handles
+            const float max_handle_width = slotP2.x - slotP1.x / 3.0f;
+            const float min_handle_width = ImMin(10.0f, max_handle_width);
+            const float handle_width = ImClamp(framePixelWidth / 2.0f, min_handle_width, max_handle_width);
+            ImRect rects[3] = { ImRect(slotP1, ImVec2(slotP1.x + handle_width, slotP2.y))
+                , ImRect(ImVec2(slotP2.x - handle_width, slotP1.y), slotP2)
+                , ImRect(slotP1, slotP2) };
+
+            const unsigned int quadColor[] = { 0xFFFFFFFF, 0xFFFFFFFF, slotColor + (selected ? 0 : 0x202020) };
+            if (movingEntry == -1 && (sequenceOptions & SEQUENCER_EDIT_STARTEND))// TODOFOCUS && backgroundRect.Contains(io.MousePos))
+            {
+               for (int j = 2; j >= 0; j--)
+               {
+                  ImRect& rc = rects[j];
+                  if (!rc.Contains(io.MousePos))
+                     continue;
+                  draw_list->AddRectFilled(rc.Min, rc.Max, quadColor[j], 2);
+               }
+
+               for (int j = 0; j < 3; j++)
+               {
+                  ImRect& rc = rects[j];
+                  if (!rc.Contains(io.MousePos))
+                     continue;
+                  if (!ImRect(childFramePos, childFramePos + childFrameSize).Contains(io.MousePos))
+                     continue;
+                  if (ImGui::IsMouseClicked(0) && !MovingScrollBar && !MovingCurrentFrame)
+                  {
+                     movingEntry = i;
+                     movingPos = cx;
+                     movingPart = j + 1;
+                     sequence->BeginEdit(movingEntry);
+                     break;
+                  }
+               }
+            }
+
+            // custom draw
+            if (localCustomHeight > 0)
+            {
+               ImVec2 rp(canvas_pos.x, contentMin.y + ItemHeight * i + 1 + customHeight);
+               ImRect customRect(rp + ImVec2(legendWidth - (firstFrameUsed - sequence->GetFrameMin() - 0.5f) * framePixelWidth, float(ItemHeight)),
+                  rp + ImVec2(legendWidth + (sequence->GetFrameMax() - firstFrameUsed - 0.5f + 2.f) * framePixelWidth, float(localCustomHeight + ItemHeight)));
+               ImRect clippingRect(rp + ImVec2(float(legendWidth), float(ItemHeight)), rp + ImVec2(canvas_size.x, float(localCustomHeight + ItemHeight)));
+
+               ImRect legendRect(rp + ImVec2(0.f, float(ItemHeight)), rp + ImVec2(float(legendWidth), float(localCustomHeight)));
+               ImRect legendClippingRect(canvas_pos + ImVec2(0.f, float(ItemHeight)), canvas_pos + ImVec2(float(legendWidth), float(localCustomHeight + ItemHeight)));
+               customDraws.push_back({ i, customRect, legendRect, clippingRect, legendClippingRect });
+            }
+            else
+            {
+               ImVec2 rp(canvas_pos.x, contentMin.y + ItemHeight * i + customHeight);
+               ImRect customRect(rp + ImVec2(legendWidth - (firstFrameUsed - sequence->GetFrameMin() - 0.5f) * framePixelWidth, float(0.f)),
+                  rp + ImVec2(legendWidth + (sequence->GetFrameMax() - firstFrameUsed - 0.5f + 2.f) * framePixelWidth, float(ItemHeight)));
+               ImRect clippingRect(rp + ImVec2(float(legendWidth), float(0.f)), rp + ImVec2(canvas_size.x, float(ItemHeight)));
+
+               compactCustomDraws.push_back({ i, customRect, ImRect(), clippingRect, ImRect() });
+            }
+            customHeight += localCustomHeight;
+         }
+
+
+         // moving
+         if (/*backgroundRect.Contains(io.MousePos) && */movingEntry >= 0)
+         {
+#if IMGUI_VERSION_NUM >= 18723
+            ImGui::SetNextFrameWantCaptureMouse(true);
+#else
+            ImGui::CaptureMouseFromApp();
+#endif
+            int diffFrame = int((cx - movingPos) / framePixelWidth);
+            if (std::abs(diffFrame) > 0)
+            {
+               int* start, * end;
+               sequence->Get(movingEntry, &start, &end, NULL, NULL);
+               if (selectedEntry)
+                  *selectedEntry = movingEntry;
+               int& l = *start;
+               int& r = *end;
+               if (movingPart & 1)
+                  l += diffFrame;
+               if (movingPart & 2)
+                  r += diffFrame;
+               if (l < 0)
+               {
+                  if (movingPart & 2)
+                     r -= l;
+                  l = 0;
+               }
+               if (movingPart & 1 && l > r)
+                  l = r;
+               if (movingPart & 2 && r < l)
+                  r = l;
+               movingPos += int(diffFrame * framePixelWidth);
+            }
+            if (!io.MouseDown[0])
+            {
+               // single select
+               if (!diffFrame && movingPart && selectedEntry)
+               {
+                  *selectedEntry = movingEntry;
+                  ret = true;
+               }
+
+               movingEntry = -1;
+               sequence->EndEdit();
+            }
+         }
+
+         // cursor
+         if (currentFrame && firstFrame && *currentFrame >= *firstFrame && *currentFrame <= sequence->GetFrameMax())
+         {
+            static const float cursorWidth = 8.f;
+            float cursorOffset = contentMin.x + legendWidth + (*currentFrame - firstFrameUsed) * framePixelWidth + framePixelWidth / 2 - cursorWidth * 0.5f;
+            draw_list->AddLine(ImVec2(cursorOffset, canvas_pos.y), ImVec2(cursorOffset, contentMax.y), 0xA02A2AFF, cursorWidth);
+            char tmps[512];
+            ImFormatString(tmps, IM_ARRAYSIZE(tmps), "%d", *currentFrame);
+            draw_list->AddText(ImVec2(cursorOffset + 10, canvas_pos.y + 2), 0xFF2A2AFF, tmps);
+         }
+
+         draw_list->PopClipRect();
+         draw_list->PopClipRect();
+
+         for (auto& customDraw : customDraws)
+            sequence->CustomDraw(customDraw.index, draw_list, customDraw.customRect, customDraw.legendRect, customDraw.clippingRect, customDraw.legendClippingRect);
+         for (auto& customDraw : compactCustomDraws)
+            sequence->CustomDrawCompact(customDraw.index, draw_list, customDraw.customRect, customDraw.clippingRect);
+
+         // copy paste
+         if (sequenceOptions & SEQUENCER_COPYPASTE)
+         {
+            ImRect rectCopy(ImVec2(contentMin.x + 100, canvas_pos.y + 2)
+               , ImVec2(contentMin.x + 100 + 30, canvas_pos.y + ItemHeight - 2));
+            bool inRectCopy = rectCopy.Contains(io.MousePos);
+            unsigned int copyColor = inRectCopy ? 0xFF1080FF : 0xFF000000;
+            draw_list->AddText(rectCopy.Min, copyColor, "Copy");
+
+            ImRect rectPaste(ImVec2(contentMin.x + 140, canvas_pos.y + 2)
+               , ImVec2(contentMin.x + 140 + 30, canvas_pos.y + ItemHeight - 2));
+            bool inRectPaste = rectPaste.Contains(io.MousePos);
+            unsigned int pasteColor = inRectPaste ? 0xFF1080FF : 0xFF000000;
+            draw_list->AddText(rectPaste.Min, pasteColor, "Paste");
+
+            if (inRectCopy && io.MouseReleased[0])
+            {
+               sequence->Copy();
+            }
+            if (inRectPaste && io.MouseReleased[0])
+            {
+               sequence->Paste();
+            }
+         }
+         //
+
+         ImGui::EndChild();
+         ImGui::PopStyleColor();
+         if (hasScrollBar)
+         {
+            ImGui::InvisibleButton("scrollBar", scrollBarSize);
+            ImVec2 scrollBarMin = ImGui::GetItemRectMin();
+            ImVec2 scrollBarMax = ImGui::GetItemRectMax();
+
+            // ratio = number of frames visible in control / number to total frames
+
+            float startFrameOffset = ((float)(firstFrameUsed - sequence->GetFrameMin()) / (float)frameCount) * (canvas_size.x - legendWidth);
+            ImVec2 scrollBarA(scrollBarMin.x + legendWidth, scrollBarMin.y - 2);
+            ImVec2 scrollBarB(scrollBarMin.x + canvas_size.x, scrollBarMax.y - 1);
+            draw_list->AddRectFilled(scrollBarA, scrollBarB, 0xFF222222, 0);
+
+            ImRect scrollBarRect(scrollBarA, scrollBarB);
+            bool inScrollBar = scrollBarRect.Contains(io.MousePos);
+
+            draw_list->AddRectFilled(scrollBarA, scrollBarB, 0xFF101010, 8);
+
+
+            ImVec2 scrollBarC(scrollBarMin.x + legendWidth + startFrameOffset, scrollBarMin.y);
+            ImVec2 scrollBarD(scrollBarMin.x + legendWidth + barWidthInPixels + startFrameOffset, scrollBarMax.y - 2);
+            draw_list->AddRectFilled(scrollBarC, scrollBarD, (inScrollBar || MovingScrollBar) ? 0xFF606060 : 0xFF505050, 6);
+
+            ImRect barHandleLeft(scrollBarC, ImVec2(scrollBarC.x + 14, scrollBarD.y));
+            ImRect barHandleRight(ImVec2(scrollBarD.x - 14, scrollBarC.y), scrollBarD);
+
+            bool onLeft = barHandleLeft.Contains(io.MousePos);
+            bool onRight = barHandleRight.Contains(io.MousePos);
+
+            static bool sizingRBar = false;
+            static bool sizingLBar = false;
+
+            draw_list->AddRectFilled(barHandleLeft.Min, barHandleLeft.Max, (onLeft || sizingLBar) ? 0xFFAAAAAA : 0xFF666666, 6);
+            draw_list->AddRectFilled(barHandleRight.Min, barHandleRight.Max, (onRight || sizingRBar) ? 0xFFAAAAAA : 0xFF666666, 6);
+
+            ImRect scrollBarThumb(scrollBarC, scrollBarD);
+            static const float MinBarWidth = 44.f;
+            if (sizingRBar)
+            {
+               if (!io.MouseDown[0])
+               {
+                  sizingRBar = false;
+               }
+               else
+               {
+                  float barNewWidth = ImMax(barWidthInPixels + io.MouseDelta.x, MinBarWidth);
+                  float barRatio = barNewWidth / barWidthInPixels;
+                  framePixelWidthTarget = framePixelWidth = framePixelWidth / barRatio;
+                  int newVisibleFrameCount = int((canvas_size.x - legendWidth) / framePixelWidthTarget);
+                  int lastFrame = *firstFrame + newVisibleFrameCount;
+                  if (lastFrame > sequence->GetFrameMax())
+                  {
+                     framePixelWidthTarget = framePixelWidth = (canvas_size.x - legendWidth) / float(sequence->GetFrameMax() - *firstFrame);
+                  }
+               }
+            }
+            else if (sizingLBar)
+            {
+               if (!io.MouseDown[0])
+               {
+                  sizingLBar = false;
+               }
+               else
+               {
+                  if (fabsf(io.MouseDelta.x) > FLT_EPSILON)
+                  {
+                     float barNewWidth = ImMax(barWidthInPixels - io.MouseDelta.x, MinBarWidth);
+                     float barRatio = barNewWidth / barWidthInPixels;
+                     float previousFramePixelWidthTarget = framePixelWidthTarget;
+                     framePixelWidthTarget = framePixelWidth = framePixelWidth / barRatio;
+                     int newVisibleFrameCount = int(visibleFrameCount / barRatio);
+                     int newFirstFrame = *firstFrame + newVisibleFrameCount - visibleFrameCount;
+                     newFirstFrame = ImClamp(newFirstFrame, sequence->GetFrameMin(), ImMax(sequence->GetFrameMax() - visibleFrameCount, sequence->GetFrameMin()));
+                     if (newFirstFrame == *firstFrame)
+                     {
+                        framePixelWidth = framePixelWidthTarget = previousFramePixelWidthTarget;
+                     }
+                     else
+                     {
+                        *firstFrame = newFirstFrame;
+                     }
+                  }
+               }
+            }
+            else
+            {
+               if (MovingScrollBar)
+               {
+                  if (!io.MouseDown[0])
+                  {
+                     MovingScrollBar = false;
+                  }
+                  else
+                  {
+                     float framesPerPixelInBar = barWidthInPixels / (float)visibleFrameCount;
+                     *firstFrame = int((io.MousePos.x - panningViewSource.x) / framesPerPixelInBar) - panningViewFrame;
+                     *firstFrame = ImClamp(*firstFrame, sequence->GetFrameMin(), ImMax(sequence->GetFrameMax() - visibleFrameCount, sequence->GetFrameMin()));
+                  }
+               }
+               else
+               {
+                  if (scrollBarThumb.Contains(io.MousePos) && ImGui::IsMouseClicked(0) && firstFrame && !MovingCurrentFrame && movingEntry == -1)
+                  {
+                     MovingScrollBar = true;
+                     panningViewSource = io.MousePos;
+                     panningViewFrame = -*firstFrame;
+                  }
+                  if (!sizingRBar && onRight && ImGui::IsMouseClicked(0))
+                     sizingRBar = true;
+                  if (!sizingLBar && onLeft && ImGui::IsMouseClicked(0))
+                     sizingLBar = true;
+
+               }
+            }
+         }
+      }
+
+      ImGui::EndGroup();
+
+      if (regionRect.Contains(io.MousePos))
+      {
+         bool overCustomDraw = false;
+         for (auto& custom : customDraws)
+         {
+            if (custom.customRect.Contains(io.MousePos))
+            {
+               overCustomDraw = true;
+            }
+         }
+         if (overCustomDraw)
+         {
+         }
+         else
+         {
+#if 0
+            frameOverCursor = *firstFrame + (int)(visibleFrameCount * ((io.MousePos.x - (float)legendWidth - canvas_pos.x) / (canvas_size.x - legendWidth)));
+            //frameOverCursor = max(min(*firstFrame - visibleFrameCount / 2, frameCount - visibleFrameCount), 0);
+
+            /**firstFrame -= frameOverCursor;
+            *firstFrame *= framePixelWidthTarget / framePixelWidth;
+            *firstFrame += frameOverCursor;*/
+            if (io.MouseWheel < -FLT_EPSILON)
+            {
+               *firstFrame -= frameOverCursor;
+               *firstFrame = int(*firstFrame * 1.1f);
+               framePixelWidthTarget *= 0.9f;
+               *firstFrame += frameOverCursor;
+            }
+
+            if (io.MouseWheel > FLT_EPSILON)
+            {
+               *firstFrame -= frameOverCursor;
+               *firstFrame = int(*firstFrame * 0.9f);
+               framePixelWidthTarget *= 1.1f;
+               *firstFrame += frameOverCursor;
+            }
+#endif
+         }
+      }
+
+      if (expanded)
+      {
+         if (SequencerAddDelButton(draw_list, ImVec2(canvas_pos.x + 2, canvas_pos.y + 2), !*expanded))
+            *expanded = !*expanded;
+      }
+
+      if (delEntry != -1)
+      {
+         sequence->Del(delEntry);
+         if (selectedEntry && (*selectedEntry == delEntry || *selectedEntry >= sequence->GetItemCount()))
+            *selectedEntry = -1;
+      }
+
+      if (dupEntry != -1)
+      {
+         sequence->Duplicate(dupEntry);
+      }
+      return ret;
+   }
+}

include/GraphEditor.h

@@ -0,0 +1,151 @@
+// https://github.com/CedricGuillemet/ImGuizmo
+// v1.91.3 WIP
+//
+// The MIT License(MIT)
+//
+// Copyright(c) 2021 Cedric Guillemet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+#pragma once
+
+#include <vector>
+#include <stdint.h>
+#include <string>
+#include "imgui.h"
+#include "imgui_internal.h"
+
+namespace GraphEditor {
+
+typedef size_t NodeIndex;
+typedef size_t SlotIndex;
+typedef size_t LinkIndex;
+typedef size_t TemplateIndex;
+
+// Force the view to be respositionned and zoom to fit nodes with Show function.
+// Parameter value will be changed to Fit_None by the function.
+enum FitOnScreen
+{
+    Fit_None,
+    Fit_AllNodes,
+    Fit_SelectedNodes
+};
+
+// Display options and colors
+struct Options
+{
+    ImRect mMinimap{{0.75f, 0.8f, 0.99f, 0.99f}}; // rectangle coordinates of minimap
+    ImU32 mBackgroundColor{ IM_COL32(40, 40, 40, 255) }; // full background color
+    ImU32 mGridColor{ IM_COL32(0, 0, 0, 60) }; // grid lines color
+    ImU32 mGridColor2{ IM_COL32(0, 0, 0, 160) }; // grid lines color every 10th
+    ImU32 mSelectedNodeBorderColor{ IM_COL32(255, 130, 30, 255) }; // node border color when it's selected
+    ImU32 mNodeBorderColor{ IM_COL32(100, 100, 100, 0) }; // node border color when it's not selected
+    ImU32 mQuadSelection{ IM_COL32(255, 32, 32, 64) }; // quad selection inside color
+    ImU32 mQuadSelectionBorder{ IM_COL32(255, 32, 32, 255) }; // quad selection border color
+    ImU32 mDefaultSlotColor{ IM_COL32(128, 128, 128, 255) }; // when no color is provided in node template, use this value
+    ImU32 mFrameFocus{ IM_COL32(64, 128, 255, 255) }; // rectangle border when graph editor has focus
+    float mLineThickness{ 5 }; // links width in pixels when zoom value is 1
+    float mGridSize{ 64.f }; // background grid size in pixels when zoom value is 1
+    float mRounding{ 3.f }; // rounding at node corners
+    float mZoomRatio{ 0.1f }; // factor per mouse wheel delta
+    float mZoomLerpFactor{ 0.25f }; // the smaller, the smoother
+    float mBorderSelectionThickness{ 6.f }; // thickness of selection border around nodes
+    float mBorderThickness{ 6.f }; // thickness of selection border around nodes
+    float mNodeSlotRadius{ 8.f }; // circle radius for inputs and outputs
+    float mNodeSlotHoverFactor{ 1.2f }; // increase size when hovering
+    float mMinZoom{ 0.2f }, mMaxZoom { 1.1f };
+    float mSnap{ 5.f };
+    bool mDisplayLinksAsCurves{ true }; // false is straight and 45deg lines
+    bool mAllowQuadSelection{ true }; // multiple selection using drag and drop
+    bool mRenderGrid{ true }; // grid or nothing
+    bool mDrawIONameOnHover{ true }; // only draw node input/output when hovering
+};
+
+// View state: scroll position and zoom factor
+struct ViewState
+{
+    ImVec2 mPosition{0.0f, 0.0f}; // scroll position
+    float mFactor{ 1.0f }; // current zoom factor
+    float mFactorTarget{ 1.0f }; // targeted zoom factor interpolated using Options.mZoomLerpFactor
+};
+
+struct Template
+{
+    ImU32 mHeaderColor;
+    ImU32 mBackgroundColor;
+    ImU32 mBackgroundColorOver;
+    ImU8 mInputCount;
+    const char** mInputNames; // can be nullptr. No text displayed.
+    ImU32* mInputColors; // can be nullptr, default slot color will be used.
+    ImU8 mOutputCount;
+    const char** mOutputNames; // can be nullptr. No text displayed.
+    ImU32* mOutputColors; // can be nullptr, default slot color will be used.
+};
+
+struct Node
+{
+    const char* mName;
+    TemplateIndex mTemplateIndex;
+    ImRect mRect;
+    bool mSelected{ false };
+};
+
+struct Link
+{
+    NodeIndex mInputNodeIndex;
+    SlotIndex mInputSlotIndex;
+    NodeIndex mOutputNodeIndex;
+    SlotIndex mOutputSlotIndex;
+};
+
+struct Delegate
+{
+    virtual bool AllowedLink(NodeIndex from, NodeIndex to) = 0;
+
+    virtual void SelectNode(NodeIndex nodeIndex, bool selected) = 0;
+    virtual void MoveSelectedNodes(const ImVec2 delta) = 0;
+    
+    virtual void AddLink(NodeIndex inputNodeIndex, SlotIndex inputSlotIndex, NodeIndex outputNodeIndex, SlotIndex outputSlotIndex) = 0;
+    virtual void DelLink(LinkIndex linkIndex) = 0;
+    
+    // user is responsible for clipping
+    virtual void CustomDraw(ImDrawList* drawList, ImRect rectangle, NodeIndex nodeIndex) = 0;
+    
+    // use mouse position to open context menu
+    // if nodeIndex != -1, right click happens on the specified node
+    virtual void RightClick(NodeIndex nodeIndex, SlotIndex slotIndexInput, SlotIndex slotIndexOutput) = 0;
+
+    virtual const size_t GetTemplateCount() = 0;
+    virtual const Template GetTemplate(TemplateIndex index) = 0;
+
+    virtual const size_t GetNodeCount() = 0;
+    virtual const Node GetNode(NodeIndex index) = 0;
+    
+    virtual const size_t GetLinkCount() = 0;
+    virtual const Link GetLink(LinkIndex index) = 0;
+
+    virtual ~Delegate() = default;
+};
+
+void Show(Delegate& delegate, const Options& options, ViewState& viewState, bool enabled, FitOnScreen* fit = nullptr);
+void GraphEditorClear();
+
+bool EditOptions(Options& options);
+
+} // namespace

include/ImCurveEdit.h

@@ -0,0 +1,82 @@
+// https://github.com/CedricGuillemet/ImGuizmo
+// v1.91.3 WIP
+//
+// The MIT License(MIT)
+//
+// Copyright(c) 2021 Cedric Guillemet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+#pragma once
+#include <stdint.h>
+#include "imgui.h"
+
+struct ImRect;
+
+namespace ImCurveEdit
+{
+   enum CurveType
+   {
+      CurveNone,
+      CurveDiscrete,
+      CurveLinear,
+      CurveSmooth,
+      CurveBezier,
+   };
+
+   struct EditPoint
+   {
+      int curveIndex;
+      int pointIndex;
+      bool operator <(const EditPoint& other) const
+      {
+         if (curveIndex < other.curveIndex)
+            return true;
+         if (curveIndex > other.curveIndex)
+            return false;
+
+         if (pointIndex < other.pointIndex)
+            return true;
+         return false;
+      }
+   };
+
+   struct Delegate
+   {
+      bool focused = false;
+      virtual size_t GetCurveCount() = 0;
+      virtual bool IsVisible(size_t /*curveIndex*/) { return true; }
+      virtual CurveType GetCurveType(size_t /*curveIndex*/) const { return CurveLinear; }
+      virtual ImVec2& GetMin() = 0;
+      virtual ImVec2& GetMax() = 0;
+      virtual size_t GetPointCount(size_t curveIndex) = 0;
+      virtual uint32_t GetCurveColor(size_t curveIndex) = 0;
+      virtual ImVec2* GetPoints(size_t curveIndex) = 0;
+      virtual int EditPoint(size_t curveIndex, int pointIndex, ImVec2 value) = 0;
+      virtual void AddPoint(size_t curveIndex, ImVec2 value) = 0;
+      virtual unsigned int GetBackgroundColor() { return 0xFF202020; }
+      // handle undo/redo thru this functions
+      virtual void BeginEdit(int /*index*/) {}
+      virtual void EndEdit() {}
+
+      virtual ~Delegate() = default;
+   };
+
+   int Edit(Delegate& delegate, const ImVec2& size, unsigned int id, const ImRect* clippingRect = NULL, ImVector<EditPoint>* selectedPoints = NULL);
+}

include/ImGradient.h

@@ -0,0 +1,45 @@
+// https://github.com/CedricGuillemet/ImGuizmo
+// v1.91.3 WIP
+//
+// The MIT License(MIT)
+//
+// Copyright(c) 2021 Cedric Guillemet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+#pragma once
+#include <cstddef>
+
+struct ImVec4;
+struct ImVec2;
+
+namespace ImGradient
+{
+   struct Delegate
+   {
+      virtual size_t GetPointCount() = 0;
+      virtual ImVec4* GetPoints() = 0;
+      virtual int EditPoint(int pointIndex, ImVec4 value) = 0;
+      virtual ImVec4 GetPoint(float t) = 0;
+      virtual void AddPoint(ImVec4 value) = 0;
+      virtual ~Delegate() = default;
+   };
+
+   bool Edit(Delegate& delegate, const ImVec2& size, int& selection);
+}

include/ImGuizmo.h

@@ -0,0 +1,306 @@
+// https://github.com/CedricGuillemet/ImGuizmo
+// v1.91.3 WIP
+//
+// The MIT License(MIT)
+//
+// Copyright(c) 2021 Cedric Guillemet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// -------------------------------------------------------------------------------------------
+// History :
+// 2019/11/03 View gizmo
+// 2016/09/11 Behind camera culling. Scaling Delta matrix not multiplied by source matrix scales. local/world rotation and translation fixed. Display message is incorrect (X: ... Y:...) in local mode.
+// 2016/09/09 Hatched negative axis. Snapping. Documentation update.
+// 2016/09/04 Axis switch and translation plan autohiding. Scale transform stability improved
+// 2016/09/01 Mogwai changed to Manipulate. Draw debug cube. Fixed inverted scale. Mixing scale and translation/rotation gives bad results.
+// 2016/08/31 First version
+//
+// -------------------------------------------------------------------------------------------
+// Future (no order):
+//
+// - Multi view
+// - display rotation/translation/scale infos in local/world space and not only local
+// - finish local/world matrix application
+// - OPERATION as bitmask
+//
+// -------------------------------------------------------------------------------------------
+// Example
+#if 0
+void EditTransform(const Camera& camera, matrix_t& matrix)
+{
+   static ImGuizmo::OPERATION mCurrentGizmoOperation(ImGuizmo::ROTATE);
+   static ImGuizmo::MODE mCurrentGizmoMode(ImGuizmo::WORLD);
+   if (ImGui::IsKeyPressed(90))
+      mCurrentGizmoOperation = ImGuizmo::TRANSLATE;
+   if (ImGui::IsKeyPressed(69))
+      mCurrentGizmoOperation = ImGuizmo::ROTATE;
+   if (ImGui::IsKeyPressed(82)) // r Key
+      mCurrentGizmoOperation = ImGuizmo::SCALE;
+   if (ImGui::RadioButton("Translate", mCurrentGizmoOperation == ImGuizmo::TRANSLATE))
+      mCurrentGizmoOperation = ImGuizmo::TRANSLATE;
+   ImGui::SameLine();
+   if (ImGui::RadioButton("Rotate", mCurrentGizmoOperation == ImGuizmo::ROTATE))
+      mCurrentGizmoOperation = ImGuizmo::ROTATE;
+   ImGui::SameLine();
+   if (ImGui::RadioButton("Scale", mCurrentGizmoOperation == ImGuizmo::SCALE))
+      mCurrentGizmoOperation = ImGuizmo::SCALE;
+   float matrixTranslation[3], matrixRotation[3], matrixScale[3];
+   ImGuizmo::DecomposeMatrixToComponents(matrix.m16, matrixTranslation, matrixRotation, matrixScale);
+   ImGui::InputFloat3("Tr", matrixTranslation, 3);
+   ImGui::InputFloat3("Rt", matrixRotation, 3);
+   ImGui::InputFloat3("Sc", matrixScale, 3);
+   ImGuizmo::RecomposeMatrixFromComponents(matrixTranslation, matrixRotation, matrixScale, matrix.m16);
+
+   if (mCurrentGizmoOperation != ImGuizmo::SCALE)
+   {
+      if (ImGui::RadioButton("Local", mCurrentGizmoMode == ImGuizmo::LOCAL))
+         mCurrentGizmoMode = ImGuizmo::LOCAL;
+      ImGui::SameLine();
+      if (ImGui::RadioButton("World", mCurrentGizmoMode == ImGuizmo::WORLD))
+         mCurrentGizmoMode = ImGuizmo::WORLD;
+   }
+   static bool useSnap(false);
+   if (ImGui::IsKeyPressed(83))
+      useSnap = !useSnap;
+   ImGui::Checkbox("", &useSnap);
+   ImGui::SameLine();
+   vec_t snap;
+   switch (mCurrentGizmoOperation)
+   {
+   case ImGuizmo::TRANSLATE:
+      snap = config.mSnapTranslation;
+      ImGui::InputFloat3("Snap", &snap.x);
+      break;
+   case ImGuizmo::ROTATE:
+      snap = config.mSnapRotation;
+      ImGui::InputFloat("Angle Snap", &snap.x);
+      break;
+   case ImGuizmo::SCALE:
+      snap = config.mSnapScale;
+      ImGui::InputFloat("Scale Snap", &snap.x);
+      break;
+   }
+   ImGuiIO& io = ImGui::GetIO();
+   ImGuizmo::SetRect(0, 0, io.DisplaySize.x, io.DisplaySize.y);
+   ImGuizmo::Manipulate(camera.mView.m16, camera.mProjection.m16, mCurrentGizmoOperation, mCurrentGizmoMode, matrix.m16, NULL, useSnap ? &snap.x : NULL);
+}
+#endif
+#pragma once
+
+#ifdef USE_IMGUI_API
+#include "imconfig.h"
+#endif
+#ifndef IMGUI_API
+#define IMGUI_API
+#endif
+
+#ifndef IMGUIZMO_NAMESPACE
+#define IMGUIZMO_NAMESPACE ImGuizmo
+#endif
+
+struct ImGuiWindow;
+
+namespace IMGUIZMO_NAMESPACE
+{
+   // call inside your own window and before Manipulate() in order to draw gizmo to that window.
+   // Or pass a specific ImDrawList to draw to (e.g. ImGui::GetForegroundDrawList()).
+   IMGUI_API void SetDrawlist(ImDrawList* drawlist = nullptr);
+
+   // call BeginFrame right after ImGui_XXXX_NewFrame();
+   IMGUI_API void BeginFrame();
+
+   // this is necessary because when imguizmo is compiled into a dll, and imgui into another
+   // globals are not shared between them.
+   // More details at https://stackoverflow.com/questions/19373061/what-happens-to-global-and-static-variables-in-a-shared-library-when-it-is-dynam
+   // expose method to set imgui context
+   IMGUI_API void SetImGuiContext(ImGuiContext* ctx);
+
+   // return true if mouse cursor is over any gizmo control (axis, plan or screen component)
+   IMGUI_API bool IsOver();
+
+   // return true if mouse IsOver or if the gizmo is in moving state
+   IMGUI_API bool IsUsing();
+
+   // return true if the view gizmo is in moving state
+   IMGUI_API bool IsUsingViewManipulate();
+   // only check if your mouse is over the view manipulator - no matter whether it's active or not
+   IMGUI_API bool IsViewManipulateHovered();
+
+   // return true if any gizmo is in moving state
+   IMGUI_API bool IsUsingAny();
+
+   // enable/disable the gizmo. Stay in the state until next call to Enable.
+   // gizmo is rendered with gray half transparent color when disabled
+   IMGUI_API void Enable(bool enable);
+
+   // helper functions for manualy editing translation/rotation/scale with an input float
+   // translation, rotation and scale float points to 3 floats each
+   // Angles are in degrees (more suitable for human editing)
+   // example:
+   // float matrixTranslation[3], matrixRotation[3], matrixScale[3];
+   // ImGuizmo::DecomposeMatrixToComponents(gizmoMatrix.m16, matrixTranslation, matrixRotation, matrixScale);
+   // ImGui::InputFloat3("Tr", matrixTranslation, 3);
+   // ImGui::InputFloat3("Rt", matrixRotation, 3);
+   // ImGui::InputFloat3("Sc", matrixScale, 3);
+   // ImGuizmo::RecomposeMatrixFromComponents(matrixTranslation, matrixRotation, matrixScale, gizmoMatrix.m16);
+   //
+   // These functions have some numerical stability issues for now. Use with caution.
+   IMGUI_API void DecomposeMatrixToComponents(const float* matrix, float* translation, float* rotation, float* scale);
+   IMGUI_API void RecomposeMatrixFromComponents(const float* translation, const float* rotation, const float* scale, float* matrix);
+
+   IMGUI_API void SetRect(float x, float y, float width, float height);
+   // default is false
+   IMGUI_API void SetOrthographic(bool isOrthographic);
+
+   // Render a cube with face color corresponding to face normal. Usefull for debug/tests
+   IMGUI_API void DrawCubes(const float* view, const float* projection, const float* matrices, int matrixCount);
+   IMGUI_API void DrawGrid(const float* view, const float* projection, const float* matrix, const float gridSize);
+
+   // call it when you want a gizmo
+   // Needs view and projection matrices.
+   // matrix parameter is the source matrix (where will be gizmo be drawn) and might be transformed by the function. Return deltaMatrix is optional
+   // translation is applied in world space
+   enum OPERATION
+   {
+      TRANSLATE_X      = (1u << 0),
+      TRANSLATE_Y      = (1u << 1),
+      TRANSLATE_Z      = (1u << 2),
+      ROTATE_X         = (1u << 3),
+      ROTATE_Y         = (1u << 4),
+      ROTATE_Z         = (1u << 5),
+      ROTATE_SCREEN    = (1u << 6),
+      SCALE_X          = (1u << 7),
+      SCALE_Y          = (1u << 8),
+      SCALE_Z          = (1u << 9),
+      BOUNDS           = (1u << 10),
+      SCALE_XU         = (1u << 11),
+      SCALE_YU         = (1u << 12),
+      SCALE_ZU         = (1u << 13),
+
+      TRANSLATE = TRANSLATE_X | TRANSLATE_Y | TRANSLATE_Z,
+      ROTATE = ROTATE_X | ROTATE_Y | ROTATE_Z | ROTATE_SCREEN,
+      SCALE = SCALE_X | SCALE_Y | SCALE_Z,
+      SCALEU = SCALE_XU | SCALE_YU | SCALE_ZU, // universal
+      UNIVERSAL = TRANSLATE | ROTATE | SCALEU
+   };
+
+   inline OPERATION operator|(OPERATION lhs, OPERATION rhs)
+   {
+     return static_cast<OPERATION>(static_cast<int>(lhs) | static_cast<int>(rhs));
+   }
+
+   enum MODE
+   {
+      LOCAL,
+      WORLD
+   };
+
+   IMGUI_API bool Manipulate(const float* view, const float* projection, OPERATION operation, MODE mode, float* matrix, float* deltaMatrix = NULL, const float* snap = NULL, const float* localBounds = NULL, const float* boundsSnap = NULL);
+   //
+   // Please note that this cubeview is patented by Autodesk : https://patents.google.com/patent/US7782319B2/en
+   // It seems to be a defensive patent in the US. I don't think it will bring troubles using it as
+   // other software are using the same mechanics. But just in case, you are now warned!
+   //
+   IMGUI_API void ViewManipulate(float* view, float length, ImVec2 position, ImVec2 size, ImU32 backgroundColor);
+
+   // use this version if you did not call Manipulate before and you are just using ViewManipulate
+   IMGUI_API void ViewManipulate(float* view, const float* projection, OPERATION operation, MODE mode, float* matrix, float length, ImVec2 position, ImVec2 size, ImU32 backgroundColor);
+
+   IMGUI_API void SetAlternativeWindow(ImGuiWindow* window);
+
+   [[deprecated("Use PushID/PopID instead.")]]
+   IMGUI_API void SetID(int id);
+
+	// ID stack/scopes
+	// Read the FAQ (docs/FAQ.md or http://dearimgui.org/faq) for more details about how ID are handled in dear imgui.
+	// - Those questions are answered and impacted by understanding of the ID stack system:
+	//   - "Q: Why is my widget not reacting when I click on it?"
+	//   - "Q: How can I have widgets with an empty label?"
+	//   - "Q: How can I have multiple widgets with the same label?"
+	// - Short version: ID are hashes of the entire ID stack. If you are creating widgets in a loop you most likely
+	//   want to push a unique identifier (e.g. object pointer, loop index) to uniquely differentiate them.
+	// - You can also use the "Label##foobar" syntax within widget label to distinguish them from each others.
+	// - In this header file we use the "label"/"name" terminology to denote a string that will be displayed + used as an ID,
+	//   whereas "str_id" denote a string that is only used as an ID and not normally displayed.
+	IMGUI_API void          PushID(const char* str_id);                                     // push string into the ID stack (will hash string).
+	IMGUI_API void          PushID(const char* str_id_begin, const char* str_id_end);       // push string into the ID stack (will hash string).
+	IMGUI_API void          PushID(const void* ptr_id);                                     // push pointer into the ID stack (will hash pointer).
+	IMGUI_API void          PushID(int int_id);                                             // push integer into the ID stack (will hash integer).
+	IMGUI_API void          PopID();                                                        // pop from the ID stack.
+	IMGUI_API ImGuiID       GetID(const char* str_id);                                      // calculate unique ID (hash of whole ID stack + given parameter). e.g. if you want to query into ImGuiStorage yourself
+	IMGUI_API ImGuiID       GetID(const char* str_id_begin, const char* str_id_end);
+	IMGUI_API ImGuiID       GetID(const void* ptr_id);
+
+   // return true if the cursor is over the operation's gizmo
+   IMGUI_API bool IsOver(OPERATION op);
+   IMGUI_API void SetGizmoSizeClipSpace(float value);
+
+   // Allow axis to flip
+   // When true (default), the guizmo axis flip for better visibility
+   // When false, they always stay along the positive world/local axis
+   IMGUI_API void AllowAxisFlip(bool value);
+
+   // Configure the limit where axis are hidden
+   IMGUI_API void SetAxisLimit(float value);
+   // Set an axis mask to permanently hide a given axis (true -> hidden, false -> shown)
+   IMGUI_API void SetAxisMask(bool x, bool y, bool z);
+   // Configure the limit where planes are hiden
+   IMGUI_API void SetPlaneLimit(float value);
+   // from a x,y,z point in space and using Manipulation view/projection matrix, check if mouse is in pixel radius distance of that projected point
+   IMGUI_API bool IsOver(float* position, float pixelRadius);
+
+   enum COLOR
+   {
+      DIRECTION_X,      // directionColor[0]
+      DIRECTION_Y,      // directionColor[1]
+      DIRECTION_Z,      // directionColor[2]
+      PLANE_X,          // planeColor[0]
+      PLANE_Y,          // planeColor[1]
+      PLANE_Z,          // planeColor[2]
+      SELECTION,        // selectionColor
+      INACTIVE,         // inactiveColor
+      TRANSLATION_LINE, // translationLineColor
+      SCALE_LINE,
+      ROTATION_USING_BORDER,
+      ROTATION_USING_FILL,
+      HATCHED_AXIS_LINES,
+      TEXT,
+      TEXT_SHADOW,
+      COUNT
+   };
+
+   struct Style
+   {
+      IMGUI_API Style();
+
+      float TranslationLineThickness;   // Thickness of lines for translation gizmo
+      float TranslationLineArrowSize;   // Size of arrow at the end of lines for translation gizmo
+      float RotationLineThickness;      // Thickness of lines for rotation gizmo
+      float RotationOuterLineThickness; // Thickness of line surrounding the rotation gizmo
+      float ScaleLineThickness;         // Thickness of lines for scale gizmo
+      float ScaleLineCircleSize;        // Size of circle at the end of lines for scale gizmo
+      float HatchedAxisLineThickness;   // Thickness of hatched axis lines
+      float CenterCircleSize;           // Size of circle at the center of the translate/scale gizmo
+
+      ImVec4 Colors[COLOR::COUNT];
+   };
+
+   IMGUI_API Style& GetStyle();
+}

include/ImSequencer.h

@@ -0,0 +1,79 @@
+// https://github.com/CedricGuillemet/ImGuizmo
+// v1.91.3 WIP
+//
+// The MIT License(MIT)
+//
+// Copyright(c) 2021 Cedric Guillemet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+#pragma once
+
+#include <cstddef>
+
+struct ImDrawList;
+struct ImRect;
+namespace ImSequencer
+{
+   enum SEQUENCER_OPTIONS
+   {
+      SEQUENCER_EDIT_NONE = 0,
+      SEQUENCER_EDIT_STARTEND = 1 << 1,
+      SEQUENCER_CHANGE_FRAME = 1 << 3,
+      SEQUENCER_ADD = 1 << 4,
+      SEQUENCER_DEL = 1 << 5,
+      SEQUENCER_COPYPASTE = 1 << 6,
+      SEQUENCER_EDIT_ALL = SEQUENCER_EDIT_STARTEND | SEQUENCER_CHANGE_FRAME
+   };
+
+   struct SequenceInterface
+   {
+      bool focused = false;
+      virtual int GetFrameMin() const = 0;
+      virtual int GetFrameMax() const = 0;
+      virtual int GetItemCount() const = 0;
+
+      virtual void BeginEdit(int /*index*/) {}
+      virtual void EndEdit() {}
+      virtual int GetItemTypeCount() const { return 0; }
+      virtual const char* GetItemTypeName(int /*typeIndex*/) const { return ""; }
+      virtual const char* GetItemLabel(int /*index*/) const { return ""; }
+      virtual const char* GetCollapseFmt() const { return "%d Frames / %d entries"; }
+
+      virtual void Get(int index, int** start, int** end, int* type, unsigned int* color) = 0;
+      virtual void Add(int /*type*/) {}
+      virtual void Del(int /*index*/) {}
+      virtual void Duplicate(int /*index*/) {}
+
+      virtual void Copy() {}
+      virtual void Paste() {}
+
+      virtual size_t GetCustomHeight(int /*index*/) { return 0; }
+      virtual void DoubleClick(int /*index*/) {}
+      virtual void CustomDraw(int /*index*/, ImDrawList* /*draw_list*/, const ImRect& /*rc*/, const ImRect& /*legendRect*/, const ImRect& /*clippingRect*/, const ImRect& /*legendClippingRect*/) {}
+      virtual void CustomDrawCompact(int /*index*/, ImDrawList* /*draw_list*/, const ImRect& /*rc*/, const ImRect& /*clippingRect*/) {}
+
+       virtual ~SequenceInterface() = default;
+   };
+
+
+   // return true if selection is made
+   bool Sequencer(SequenceInterface* sequence, int* currentFrame, bool* expanded, int* selectedEntry, int* firstFrame, int sequenceOptions);
+
+}

include/KHR/khrplatform.h

@@ -0,0 +1,311 @@
+#ifndef __khrplatform_h_
+#define __khrplatform_h_
+
+/*
+** Copyright (c) 2008-2018 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+/* Khronos platform-specific types and definitions.
+ *
+ * The master copy of khrplatform.h is maintained in the Khronos EGL
+ * Registry repository at https://github.com/KhronosGroup/EGL-Registry
+ * The last semantic modification to khrplatform.h was at commit ID:
+ *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
+ *
+ * Adopters may modify this file to suit their platform. Adopters are
+ * encouraged to submit platform specific modifications to the Khronos
+ * group so that they can be included in future versions of this file.
+ * Please submit changes by filing pull requests or issues on
+ * the EGL Registry repository linked above.
+ *
+ *
+ * See the Implementer's Guidelines for information about where this file
+ * should be located on your system and for more details of its use:
+ *    http://www.khronos.org/registry/implementers_guide.pdf
+ *
+ * This file should be included as
+ *        #include <KHR/khrplatform.h>
+ * by Khronos client API header files that use its types and defines.
+ *
+ * The types in khrplatform.h should only be used to define API-specific types.
+ *
+ * Types defined in khrplatform.h:
+ *    khronos_int8_t              signed   8  bit
+ *    khronos_uint8_t             unsigned 8  bit
+ *    khronos_int16_t             signed   16 bit
+ *    khronos_uint16_t            unsigned 16 bit
+ *    khronos_int32_t             signed   32 bit
+ *    khronos_uint32_t            unsigned 32 bit
+ *    khronos_int64_t             signed   64 bit
+ *    khronos_uint64_t            unsigned 64 bit
+ *    khronos_intptr_t            signed   same number of bits as a pointer
+ *    khronos_uintptr_t           unsigned same number of bits as a pointer
+ *    khronos_ssize_t             signed   size
+ *    khronos_usize_t             unsigned size
+ *    khronos_float_t             signed   32 bit floating point
+ *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
+ *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
+ *                                         nanoseconds
+ *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
+ *    khronos_boolean_enum_t      enumerated boolean type. This should
+ *      only be used as a base type when a client API's boolean type is
+ *      an enum. Client APIs which use an integer or other type for
+ *      booleans cannot use this as the base type for their boolean.
+ *
+ * Tokens defined in khrplatform.h:
+ *
+ *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
+ *
+ *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
+ *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
+ *
+ * Calling convention macros defined in this file:
+ *    KHRONOS_APICALL
+ *    KHRONOS_APIENTRY
+ *    KHRONOS_APIATTRIBUTES
+ *
+ * These may be used in function prototypes as:
+ *
+ *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
+ *                                  int arg1,
+ *                                  int arg2) KHRONOS_APIATTRIBUTES;
+ */
+
+#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
+#   define KHRONOS_STATIC 1
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APICALL
+ *-------------------------------------------------------------------------
+ * This precedes the return type of the function in the function prototype.
+ */
+#if defined(KHRONOS_STATIC)
+    /* If the preprocessor constant KHRONOS_STATIC is defined, make the
+     * header compatible with static linking. */
+#   define KHRONOS_APICALL
+#elif defined(_WIN32)
+#   define KHRONOS_APICALL __declspec(dllimport)
+#elif defined (__SYMBIAN32__)
+#   define KHRONOS_APICALL IMPORT_C
+#elif defined(__ANDROID__)
+#   define KHRONOS_APICALL __attribute__((visibility("default")))
+#else
+#   define KHRONOS_APICALL
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIENTRY
+ *-------------------------------------------------------------------------
+ * This follows the return type of the function  and precedes the function
+ * name in the function prototype.
+ */
+#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
+    /* Win32 but not WinCE */
+#   define KHRONOS_APIENTRY __stdcall
+#else
+#   define KHRONOS_APIENTRY
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIATTRIBUTES
+ *-------------------------------------------------------------------------
+ * This follows the closing parenthesis of the function prototype arguments.
+ */
+#if defined (__ARMCC_2__)
+#define KHRONOS_APIATTRIBUTES __softfp
+#else
+#define KHRONOS_APIATTRIBUTES
+#endif
+
+/*-------------------------------------------------------------------------
+ * basic type definitions
+ *-----------------------------------------------------------------------*/
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
+
+
+/*
+ * Using <stdint.h>
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+/*
+ * To support platform where unsigned long cannot be used interchangeably with
+ * inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
+ * Ideally, we could just use (u)intptr_t everywhere, but this could result in
+ * ABI breakage if khronos_uintptr_t is changed from unsigned long to
+ * unsigned long long or similar (this results in different C++ name mangling).
+ * To avoid changes for existing platforms, we restrict usage of intptr_t to
+ * platforms where the size of a pointer is larger than the size of long.
+ */
+#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
+#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
+#define KHRONOS_USE_INTPTR_T
+#endif
+#endif
+
+#elif defined(__VMS ) || defined(__sgi)
+
+/*
+ * Using <inttypes.h>
+ */
+#include <inttypes.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
+
+/*
+ * Win32
+ */
+typedef __int32                 khronos_int32_t;
+typedef unsigned __int32        khronos_uint32_t;
+typedef __int64                 khronos_int64_t;
+typedef unsigned __int64        khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__sun__) || defined(__digital__)
+
+/*
+ * Sun or Digital
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#if defined(__arch64__) || defined(_LP64)
+typedef long int                khronos_int64_t;
+typedef unsigned long int       khronos_uint64_t;
+#else
+typedef long long int           khronos_int64_t;
+typedef unsigned long long int  khronos_uint64_t;
+#endif /* __arch64__ */
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif 0
+
+/*
+ * Hypothetical platform with no float or int64 support
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#define KHRONOS_SUPPORT_INT64   0
+#define KHRONOS_SUPPORT_FLOAT   0
+
+#else
+
+/*
+ * Generic fallback
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#endif
+
+
+/*
+ * Types that are (so far) the same on all platforms
+ */
+typedef signed   char          khronos_int8_t;
+typedef unsigned char          khronos_uint8_t;
+typedef signed   short int     khronos_int16_t;
+typedef unsigned short int     khronos_uint16_t;
+
+/*
+ * Types that differ between LLP64 and LP64 architectures - in LLP64,
+ * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
+ * to be the only LLP64 architecture in current use.
+ */
+#ifdef KHRONOS_USE_INTPTR_T
+typedef intptr_t               khronos_intptr_t;
+typedef uintptr_t              khronos_uintptr_t;
+#elif defined(_WIN64)
+typedef signed   long long int khronos_intptr_t;
+typedef unsigned long long int khronos_uintptr_t;
+#else
+typedef signed   long  int     khronos_intptr_t;
+typedef unsigned long  int     khronos_uintptr_t;
+#endif
+
+#if defined(_WIN64)
+typedef signed   long long int khronos_ssize_t;
+typedef unsigned long long int khronos_usize_t;
+#else
+typedef signed   long  int     khronos_ssize_t;
+typedef unsigned long  int     khronos_usize_t;
+#endif
+
+#if KHRONOS_SUPPORT_FLOAT
+/*
+ * Float type
+ */
+typedef          float         khronos_float_t;
+#endif
+
+#if KHRONOS_SUPPORT_INT64
+/* Time types
+ *
+ * These types can be used to represent a time interval in nanoseconds or
+ * an absolute Unadjusted System Time.  Unadjusted System Time is the number
+ * of nanoseconds since some arbitrary system event (e.g. since the last
+ * time the system booted).  The Unadjusted System Time is an unsigned
+ * 64 bit value that wraps back to 0 every 584 years.  Time intervals
+ * may be either signed or unsigned.
+ */
+typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
+typedef khronos_int64_t        khronos_stime_nanoseconds_t;
+#endif
+
+/*
+ * Dummy value used to pad enum types to 32 bits.
+ */
+#ifndef KHRONOS_MAX_ENUM
+#define KHRONOS_MAX_ENUM 0x7FFFFFFF
+#endif
+
+/*
+ * Enumerated boolean type
+ *
+ * Values other than zero should be considered to be true.  Therefore
+ * comparisons should not be made against KHRONOS_TRUE.
+ */
+typedef enum {
+    KHRONOS_FALSE = 0,
+    KHRONOS_TRUE  = 1,
+    KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
+} khronos_boolean_enum_t;
+
+#endif /* __khrplatform_h_ */

include/imconfig.h

@@ -0,0 +1,139 @@
+//-----------------------------------------------------------------------------
+// DEAR IMGUI COMPILE-TIME OPTIONS
+// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
+// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
+//-----------------------------------------------------------------------------
+// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/rebased branch with your modifications to it)
+// B) or '#define IMGUI_USER_CONFIG "my_imgui_config.h"' in your project and then add directives in your own file without touching this template.
+//-----------------------------------------------------------------------------
+// You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
+// files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
+// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
+// Call IMGUI_CHECKVERSION() from your .cpp file to verify that the data structures your files are using are matching the ones imgui.cpp is using.
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+//---- Define assertion handler. Defaults to calling assert().
+// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
+//#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
+//#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
+
+//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
+// Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
+// - Windows DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
+//   for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
+//#define IMGUI_API __declspec(dllexport)                   // MSVC Windows: DLL export
+//#define IMGUI_API __declspec(dllimport)                   // MSVC Windows: DLL import
+//#define IMGUI_API __attribute__((visibility("default")))  // GCC/Clang: override visibility when set is hidden
+
+//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to clean your code of obsolete function/names.
+//#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+
+//---- Disable all of Dear ImGui or don't implement standard windows/tools.
+// It is very strongly recommended to NOT disable the demo windows and debug tool during development. They are extremely useful in day to day work. Please read comments in imgui_demo.cpp.
+//#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
+//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
+//#define IMGUI_DISABLE_DEBUG_TOOLS                         // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowIDStackToolWindow() will be empty.
+
+//---- Don't implement some functions to reduce linkage requirements.
+//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
+//#define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS          // [Win32] [Default with Visual Studio] Implement default IME handler (require imm32.lib/.a, auto-link for Visual Studio, -limm32 on command-line for MinGW)
+//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
+//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, IME).
+//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
+//#define IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS             // Don't implement default platform_io.Platform_OpenInShellFn() handler (Win32: ShellExecute(), require shell32.lib/.a, Mac/Linux: use system("")).
+//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
+//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
+//#define IMGUI_DISABLE_FILE_FUNCTIONS                      // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
+//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS              // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
+//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
+//#define IMGUI_DISABLE_DEFAULT_FONT                        // Disable default embedded font (ProggyClean.ttf), remove ~9.5 KB from output binary. AddFontDefault() will assert.
+//#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available
+
+//---- Enable Test Engine / Automation features.
+//#define IMGUI_ENABLE_TEST_ENGINE                          // Enable imgui_test_engine hooks. Generally set automatically by include "imgui_te_config.h", see Test Engine for details.
+
+//---- Include imgui_user.h at the end of imgui.h as a convenience
+// May be convenient for some users to only explicitly include vanilla imgui.h and have extra stuff included.
+//#define IMGUI_INCLUDE_IMGUI_USER_H
+//#define IMGUI_USER_H_FILENAME         "my_folder/my_imgui_user.h"
+
+//---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
+//#define IMGUI_USE_BGRA_PACKED_COLOR
+
+//---- Use 32-bit for ImWchar (default is 16-bit) to support Unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
+//#define IMGUI_USE_WCHAR32
+
+//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
+// By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
+//#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
+//#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
+//#define IMGUI_STB_SPRINTF_FILENAME    "my_folder/stb_sprintf.h"    // only used if IMGUI_USE_STB_SPRINTF is defined.
+//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION                   // only disabled if IMGUI_USE_STB_SPRINTF is defined.
+
+//---- Use stb_sprintf.h for a faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
+// Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by stb_sprintf.h.
+//#define IMGUI_USE_STB_SPRINTF
+
+//---- Use FreeType to build and rasterize the font atlas (instead of stb_truetype which is embedded by default in Dear ImGui)
+// Requires FreeType headers to be available in the include path. Requires program to be compiled with 'misc/freetype/imgui_freetype.cpp' (in this repository) + the FreeType library (not provided).
+// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
+//#define IMGUI_ENABLE_FREETYPE
+
+//---- Use FreeType + plutosvg or lunasvg to render OpenType SVG fonts (SVGinOT)
+// Only works in combination with IMGUI_ENABLE_FREETYPE.
+// - lunasvg is currently easier to acquire/install, as e.g. it is part of vcpkg.
+// - plutosvg will support more fonts and may load them faster. It currently requires to be built manually but it is fairly easy. See misc/freetype/README for instructions.
+// - Both require headers to be available in the include path + program to be linked with the library code (not provided).
+// - (note: lunasvg implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
+//#define IMGUI_ENABLE_FREETYPE_PLUTOSVG
+//#define IMGUI_ENABLE_FREETYPE_LUNASVG
+
+//---- Use stb_truetype to build and rasterize the font atlas (default)
+// The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
+//#define IMGUI_ENABLE_STB_TRUETYPE
+
+//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
+// This will be inlined as part of ImVec2 and ImVec4 class declarations.
+/*
+#define IM_VEC2_CLASS_EXTRA                                                     \
+        constexpr ImVec2(const MyVec2& f) : x(f.x), y(f.y) {}                   \
+        operator MyVec2() const { return MyVec2(x,y); }
+
+#define IM_VEC4_CLASS_EXTRA                                                     \
+        constexpr ImVec4(const MyVec4& f) : x(f.x), y(f.y), z(f.z), w(f.w) {}   \
+        operator MyVec4() const { return MyVec4(x,y,z,w); }
+*/
+//---- ...Or use Dear ImGui's own very basic math operators.
+//#define IMGUI_DEFINE_MATH_OPERATORS
+
+//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
+// Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).
+// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
+// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
+//#define ImDrawIdx unsigned int
+
+//---- Override ImDrawCallback signature (will need to modify renderer backends accordingly)
+//struct ImDrawList;
+//struct ImDrawCmd;
+//typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
+//#define ImDrawCallback MyImDrawCallback
+
+//---- Debug Tools: Macro to break in Debugger (we provide a default implementation of this in the codebase)
+// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
+//#define IM_DEBUG_BREAK  IM_ASSERT(0)
+//#define IM_DEBUG_BREAK  __debugbreak()
+
+//---- Debug Tools: Enable slower asserts
+//#define IMGUI_DEBUG_PARANOID
+
+//---- Tip: You can add extra functions within the ImGui:: namespace from anywhere (e.g. your own sources/header files)
+/*
+namespace ImGui
+{
+    void MyFunction(const char* name, MyMatrix44* mtx);
+}
+*/

include/imgui_impl_glfw.h

@@ -0,0 +1,67 @@
+// dear imgui: Platform Backend for GLFW
+// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan, WebGPU..)
+// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
+// (Requires: GLFW 3.1+. Prefer GLFW 3.3+ for full feature support.)
+
+// Implemented features:
+//  [X] Platform: Clipboard support.
+//  [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen/Pen (Windows only).
+//  [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLFW_KEY_* values are obsolete since 1.87 and not supported since 1.91.5]
+//  [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
+//  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+).
+//  [X] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
+// Issues:
+//  [ ] Platform: Multi-viewport: ParentViewportID not honored, and so io.ConfigViewportsNoDefaultParent has no effect (minor).
+
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+#ifndef IMGUI_DISABLE
+
+struct GLFWwindow;
+struct GLFWmonitor;
+
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks);
+IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks);
+IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplGlfw_NewFrame();
+
+// Emscripten related initialization phase methods (call after ImGui_ImplGlfw_InitForOpenGL)
+#ifdef __EMSCRIPTEN__
+IMGUI_IMPL_API void     ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow* window, const char* canvas_selector);
+//static inline void    ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_selector) { ImGui_ImplGlfw_InstallEmscriptenCallbacks(nullptr, canvas_selector); } } // Renamed in 1.91.0
+#endif
+
+// GLFW callbacks install
+// - When calling Init with 'install_callbacks=true': ImGui_ImplGlfw_InstallCallbacks() is called. GLFW callbacks will be installed for you. They will chain-call user's previously installed callbacks, if any.
+// - When calling Init with 'install_callbacks=false': GLFW callbacks won't be installed. You will need to call individual function yourself from your own GLFW callbacks.
+IMGUI_IMPL_API void     ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_RestoreCallbacks(GLFWwindow* window);
+
+// GFLW callbacks options:
+// - Set 'chain_for_all_windows=true' to enable chaining callbacks for all windows (including secondary viewports created by backends or by user)
+IMGUI_IMPL_API void     ImGui_ImplGlfw_SetCallbacksChainForAllWindows(bool chain_for_all_windows);
+
+// GLFW callbacks (individual callbacks to call yourself if you didn't install callbacks)
+IMGUI_IMPL_API void     ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused);        // Since 1.84
+IMGUI_IMPL_API void     ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered);        // Since 1.84
+IMGUI_IMPL_API void     ImGui_ImplGlfw_CursorPosCallback(GLFWwindow* window, double x, double y);   // Since 1.87
+IMGUI_IMPL_API void     ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_MonitorCallback(GLFWmonitor* monitor, int event);
+
+// GLFW helpers
+IMGUI_IMPL_API void     ImGui_ImplGlfw_Sleep(int milliseconds);
+
+#endif // #ifndef IMGUI_DISABLE

include/imgui_impl_opengl3.h

@@ -0,0 +1,67 @@
+// dear imgui: Renderer Backend for modern OpenGL with shaders / programmatic pipeline
+// - Desktop GL: 2.x 3.x 4.x
+// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
+// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Large meshes support (64k+ vertices) with 16-bit indices (Desktop OpenGL only).
+//  [X] Renderer: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
+
+// About WebGL/ES:
+// - You need to '#define IMGUI_IMPL_OPENGL_ES2' or '#define IMGUI_IMPL_OPENGL_ES3' to use WebGL or OpenGL ES.
+// - This is done automatically on iOS, Android and Emscripten targets.
+// - For other targets, the define needs to be visible from the imgui_impl_opengl3.cpp compilation unit. If unsure, define globally or in imconfig.h.
+
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+// About GLSL version:
+//  The 'glsl_version' initialization parameter should be nullptr (default) or a "#version XXX" string.
+//  On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es"
+//  Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp.
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+#ifndef IMGUI_DISABLE
+
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_Init(const char* glsl_version = nullptr);
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data);
+
+// (Optional) Called by Init/NewFrame/Shutdown
+IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_CreateFontsTexture();
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyFontsTexture();
+IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_CreateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyDeviceObjects();
+
+// Configuration flags to add in your imconfig file:
+//#define IMGUI_IMPL_OPENGL_ES2     // Enable ES 2 (Auto-detected on Emscripten)
+//#define IMGUI_IMPL_OPENGL_ES3     // Enable ES 3 (Auto-detected on iOS/Android)
+
+// You can explicitly select GLES2 or GLES3 API by using one of the '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
+#if !defined(IMGUI_IMPL_OPENGL_ES2) \
+ && !defined(IMGUI_IMPL_OPENGL_ES3)
+
+// Try to detect GLES on matching platforms
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif
+#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) || (defined(__ANDROID__))
+#define IMGUI_IMPL_OPENGL_ES3               // iOS, Android  -> GL ES 3, "#version 300 es"
+#elif defined(__EMSCRIPTEN__) || defined(__amigaos4__)
+#define IMGUI_IMPL_OPENGL_ES2               // Emscripten    -> GL ES 2, "#version 100"
+#else
+// Otherwise imgui_impl_opengl3_loader.h will be used.
+#endif
+
+#endif
+
+#endif // #ifndef IMGUI_DISABLE

include/imgui_impl_opengl3_loader.h

@@ -0,0 +1,916 @@
+//-----------------------------------------------------------------------------
+// About imgui_impl_opengl3_loader.h:
+//
+// We embed our own OpenGL loader to not require user to provide their own or to have to use ours,
+// which proved to be endless problems for users.
+// Our loader is custom-generated, based on gl3w but automatically filtered to only include
+// enums/functions that we use in our imgui_impl_opengl3.cpp source file in order to be small.
+//
+// YOU SHOULD NOT NEED TO INCLUDE/USE THIS DIRECTLY. THIS IS USED BY imgui_impl_opengl3.cpp ONLY.
+// THE REST OF YOUR APP SHOULD USE A DIFFERENT GL LOADER: ANY GL LOADER OF YOUR CHOICE.
+//
+// IF YOU GET BUILD ERRORS IN THIS FILE (commonly macro redefinitions or function redefinitions):
+// IT LIKELY MEANS THAT YOU ARE BUILDING 'imgui_impl_opengl3.cpp' OR INCLUDING 'imgui_impl_opengl3_loader.h'
+// IN THE SAME COMPILATION UNIT AS ONE OF YOUR FILE WHICH IS USING A THIRD-PARTY OPENGL LOADER.
+// (e.g. COULD HAPPEN IF YOU ARE DOING A UNITY/JUMBO BUILD, OR INCLUDING .CPP FILES FROM OTHERS)
+// YOU SHOULD NOT BUILD BOTH IN THE SAME COMPILATION UNIT.
+// BUT IF YOU REALLY WANT TO, you can '#define IMGUI_IMPL_OPENGL_LOADER_CUSTOM' and imgui_impl_opengl3.cpp
+// WILL NOT BE USING OUR LOADER, AND INSTEAD EXPECT ANOTHER/YOUR LOADER TO BE AVAILABLE IN THE COMPILATION UNIT.
+//
+// Regenerate with:
+//   python3 gl3w_gen.py --output ../imgui/backends/imgui_impl_opengl3_loader.h --ref ../imgui/backends/imgui_impl_opengl3.cpp ./extra_symbols.txt
+//
+// More info:
+//   https://github.com/dearimgui/gl3w_stripped
+//   https://github.com/ocornut/imgui/issues/4445
+//-----------------------------------------------------------------------------
+
+/*
+ * This file was generated with gl3w_gen.py, part of imgl3w
+ * (hosted at https://github.com/dearimgui/gl3w_stripped)
+ *
+ * This is free and unencumbered software released into the public domain.
+ *
+ * Anyone is free to copy, modify, publish, use, compile, sell, or
+ * distribute this software, either in source code form or as a compiled
+ * binary, for any purpose, commercial or non-commercial, and by any
+ * means.
+ *
+ * In jurisdictions that recognize copyright laws, the author or authors
+ * of this software dedicate any and all copyright interest in the
+ * software to the public domain. We make this dedication for the benefit
+ * of the public at large and to the detriment of our heirs and
+ * successors. We intend this dedication to be an overt act of
+ * relinquishment in perpetuity of all present and future rights to this
+ * software under copyright law.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __gl3w_h_
+#define __gl3w_h_
+
+// Adapted from KHR/khrplatform.h to avoid including entire file.
+#ifndef __khrplatform_h_
+typedef          float         khronos_float_t;
+typedef signed   char          khronos_int8_t;
+typedef unsigned char          khronos_uint8_t;
+typedef signed   short int     khronos_int16_t;
+typedef unsigned short int     khronos_uint16_t;
+#ifdef _WIN64
+typedef signed   long long int khronos_intptr_t;
+typedef signed   long long int khronos_ssize_t;
+#else
+typedef signed   long  int     khronos_intptr_t;
+typedef signed   long  int     khronos_ssize_t;
+#endif
+
+#if defined(_MSC_VER) && !defined(__clang__)
+typedef signed   __int64       khronos_int64_t;
+typedef unsigned __int64       khronos_uint64_t;
+#elif (defined(__clang__) || defined(__GNUC__)) && (__cplusplus < 201100)
+#include <stdint.h>
+typedef          int64_t       khronos_int64_t;
+typedef          uint64_t      khronos_uint64_t;
+#else
+typedef signed   long long     khronos_int64_t;
+typedef unsigned long long     khronos_uint64_t;
+#endif
+#endif  // __khrplatform_h_
+
+#ifndef __gl_glcorearb_h_
+#define __gl_glcorearb_h_ 1
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+** Copyright 2013-2020 The Khronos Group Inc.
+** SPDX-License-Identifier: MIT
+**
+** This header is generated from the Khronos OpenGL / OpenGL ES XML
+** API Registry. The current version of the Registry, generator scripts
+** used to make the header, and the header can be found at
+**   https://github.com/KhronosGroup/OpenGL-Registry
+*/
+#if defined(_WIN32) && !defined(APIENTRY) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__)
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN 1
+#endif
+#include <windows.h>
+#endif
+#ifndef APIENTRY
+#define APIENTRY
+#endif
+#ifndef APIENTRYP
+#define APIENTRYP APIENTRY *
+#endif
+#ifndef GLAPI
+#define GLAPI extern
+#endif
+/* glcorearb.h is for use with OpenGL core profile implementations.
+** It should should be placed in the same directory as gl.h and
+** included as <GL/glcorearb.h>.
+**
+** glcorearb.h includes only APIs in the latest OpenGL core profile
+** implementation together with APIs in newer ARB extensions which 
+** can be supported by the core profile. It does not, and never will
+** include functionality removed from the core profile, such as
+** fixed-function vertex and fragment processing.
+**
+** Do not #include both <GL/glcorearb.h> and either of <GL/gl.h> or
+** <GL/glext.h> in the same source file.
+*/
+/* Generated C header for:
+ * API: gl
+ * Profile: core
+ * Versions considered: .*
+ * Versions emitted: .*
+ * Default extensions included: glcore
+ * Additional extensions included: _nomatch_^
+ * Extensions removed: _nomatch_^
+ */
+#ifndef GL_VERSION_1_0
+typedef void GLvoid;
+typedef unsigned int GLenum;
+
+typedef khronos_float_t GLfloat;
+typedef int GLint;
+typedef int GLsizei;
+typedef unsigned int GLbitfield;
+typedef double GLdouble;
+typedef unsigned int GLuint;
+typedef unsigned char GLboolean;
+typedef khronos_uint8_t GLubyte;
+#define GL_COLOR_BUFFER_BIT               0x00004000
+#define GL_FALSE                          0
+#define GL_TRUE                           1
+#define GL_TRIANGLES                      0x0004
+#define GL_ONE                            1
+#define GL_SRC_ALPHA                      0x0302
+#define GL_ONE_MINUS_SRC_ALPHA            0x0303
+#define GL_FRONT                          0x0404
+#define GL_BACK                           0x0405
+#define GL_FRONT_AND_BACK                 0x0408
+#define GL_POLYGON_MODE                   0x0B40
+#define GL_CULL_FACE                      0x0B44
+#define GL_DEPTH_TEST                     0x0B71
+#define GL_STENCIL_TEST                   0x0B90
+#define GL_VIEWPORT                       0x0BA2
+#define GL_BLEND                          0x0BE2
+#define GL_SCISSOR_BOX                    0x0C10
+#define GL_SCISSOR_TEST                   0x0C11
+#define GL_UNPACK_ROW_LENGTH              0x0CF2
+#define GL_PACK_ALIGNMENT                 0x0D05
+#define GL_TEXTURE_2D                     0x0DE1
+#define GL_UNSIGNED_BYTE                  0x1401
+#define GL_UNSIGNED_SHORT                 0x1403
+#define GL_UNSIGNED_INT                   0x1405
+#define GL_FLOAT                          0x1406
+#define GL_RGBA                           0x1908
+#define GL_FILL                           0x1B02
+#define GL_VENDOR                         0x1F00
+#define GL_RENDERER                       0x1F01
+#define GL_VERSION                        0x1F02
+#define GL_EXTENSIONS                     0x1F03
+#define GL_LINEAR                         0x2601
+#define GL_TEXTURE_MAG_FILTER             0x2800
+#define GL_TEXTURE_MIN_FILTER             0x2801
+#define GL_TEXTURE_WRAP_S                 0x2802
+#define GL_TEXTURE_WRAP_T                 0x2803
+#define GL_REPEAT                         0x2901
+typedef void (APIENTRYP PFNGLPOLYGONMODEPROC) (GLenum face, GLenum mode);
+typedef void (APIENTRYP PFNGLSCISSORPROC) (GLint x, GLint y, GLsizei width, GLsizei height);
+typedef void (APIENTRYP PFNGLTEXPARAMETERIPROC) (GLenum target, GLenum pname, GLint param);
+typedef void (APIENTRYP PFNGLTEXIMAGE2DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels);
+typedef void (APIENTRYP PFNGLCLEARPROC) (GLbitfield mask);
+typedef void (APIENTRYP PFNGLCLEARCOLORPROC) (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+typedef void (APIENTRYP PFNGLDISABLEPROC) (GLenum cap);
+typedef void (APIENTRYP PFNGLENABLEPROC) (GLenum cap);
+typedef void (APIENTRYP PFNGLFLUSHPROC) (void);
+typedef void (APIENTRYP PFNGLPIXELSTOREIPROC) (GLenum pname, GLint param);
+typedef void (APIENTRYP PFNGLREADPIXELSPROC) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels);
+typedef GLenum (APIENTRYP PFNGLGETERRORPROC) (void);
+typedef void (APIENTRYP PFNGLGETINTEGERVPROC) (GLenum pname, GLint *data);
+typedef const GLubyte *(APIENTRYP PFNGLGETSTRINGPROC) (GLenum name);
+typedef GLboolean (APIENTRYP PFNGLISENABLEDPROC) (GLenum cap);
+typedef void (APIENTRYP PFNGLVIEWPORTPROC) (GLint x, GLint y, GLsizei width, GLsizei height);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glPolygonMode (GLenum face, GLenum mode);
+GLAPI void APIENTRY glScissor (GLint x, GLint y, GLsizei width, GLsizei height);
+GLAPI void APIENTRY glTexParameteri (GLenum target, GLenum pname, GLint param);
+GLAPI void APIENTRY glTexImage2D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels);
+GLAPI void APIENTRY glClear (GLbitfield mask);
+GLAPI void APIENTRY glClearColor (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+GLAPI void APIENTRY glDisable (GLenum cap);
+GLAPI void APIENTRY glEnable (GLenum cap);
+GLAPI void APIENTRY glFlush (void);
+GLAPI void APIENTRY glPixelStorei (GLenum pname, GLint param);
+GLAPI void APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels);
+GLAPI GLenum APIENTRY glGetError (void);
+GLAPI void APIENTRY glGetIntegerv (GLenum pname, GLint *data);
+GLAPI const GLubyte *APIENTRY glGetString (GLenum name);
+GLAPI GLboolean APIENTRY glIsEnabled (GLenum cap);
+GLAPI void APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height);
+#endif
+#endif /* GL_VERSION_1_0 */
+#ifndef GL_VERSION_1_1
+typedef khronos_float_t GLclampf;
+typedef double GLclampd;
+#define GL_TEXTURE_BINDING_2D             0x8069
+typedef void (APIENTRYP PFNGLDRAWELEMENTSPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices);
+typedef void (APIENTRYP PFNGLBINDTEXTUREPROC) (GLenum target, GLuint texture);
+typedef void (APIENTRYP PFNGLDELETETEXTURESPROC) (GLsizei n, const GLuint *textures);
+typedef void (APIENTRYP PFNGLGENTEXTURESPROC) (GLsizei n, GLuint *textures);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glDrawElements (GLenum mode, GLsizei count, GLenum type, const void *indices);
+GLAPI void APIENTRY glBindTexture (GLenum target, GLuint texture);
+GLAPI void APIENTRY glDeleteTextures (GLsizei n, const GLuint *textures);
+GLAPI void APIENTRY glGenTextures (GLsizei n, GLuint *textures);
+#endif
+#endif /* GL_VERSION_1_1 */
+#ifndef GL_VERSION_1_2
+#define GL_CLAMP_TO_EDGE                  0x812F
+#endif /* GL_VERSION_1_2 */
+#ifndef GL_VERSION_1_3
+#define GL_TEXTURE0                       0x84C0
+#define GL_ACTIVE_TEXTURE                 0x84E0
+typedef void (APIENTRYP PFNGLACTIVETEXTUREPROC) (GLenum texture);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glActiveTexture (GLenum texture);
+#endif
+#endif /* GL_VERSION_1_3 */
+#ifndef GL_VERSION_1_4
+#define GL_BLEND_DST_RGB                  0x80C8
+#define GL_BLEND_SRC_RGB                  0x80C9
+#define GL_BLEND_DST_ALPHA                0x80CA
+#define GL_BLEND_SRC_ALPHA                0x80CB
+#define GL_FUNC_ADD                       0x8006
+typedef void (APIENTRYP PFNGLBLENDFUNCSEPARATEPROC) (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
+typedef void (APIENTRYP PFNGLBLENDEQUATIONPROC) (GLenum mode);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glBlendFuncSeparate (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
+GLAPI void APIENTRY glBlendEquation (GLenum mode);
+#endif
+#endif /* GL_VERSION_1_4 */
+#ifndef GL_VERSION_1_5
+typedef khronos_ssize_t GLsizeiptr;
+typedef khronos_intptr_t GLintptr;
+#define GL_ARRAY_BUFFER                   0x8892
+#define GL_ELEMENT_ARRAY_BUFFER           0x8893
+#define GL_ARRAY_BUFFER_BINDING           0x8894
+#define GL_ELEMENT_ARRAY_BUFFER_BINDING   0x8895
+#define GL_STREAM_DRAW                    0x88E0
+typedef void (APIENTRYP PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
+typedef void (APIENTRYP PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers);
+typedef void (APIENTRYP PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
+typedef void (APIENTRYP PFNGLBUFFERDATAPROC) (GLenum target, GLsizeiptr size, const void *data, GLenum usage);
+typedef void (APIENTRYP PFNGLBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, const void *data);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glBindBuffer (GLenum target, GLuint buffer);
+GLAPI void APIENTRY glDeleteBuffers (GLsizei n, const GLuint *buffers);
+GLAPI void APIENTRY glGenBuffers (GLsizei n, GLuint *buffers);
+GLAPI void APIENTRY glBufferData (GLenum target, GLsizeiptr size, const void *data, GLenum usage);
+GLAPI void APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const void *data);
+#endif
+#endif /* GL_VERSION_1_5 */
+#ifndef GL_VERSION_2_0
+typedef char GLchar;
+typedef khronos_int16_t GLshort;
+typedef khronos_int8_t GLbyte;
+typedef khronos_uint16_t GLushort;
+#define GL_BLEND_EQUATION_RGB             0x8009
+#define GL_VERTEX_ATTRIB_ARRAY_ENABLED    0x8622
+#define GL_VERTEX_ATTRIB_ARRAY_SIZE       0x8623
+#define GL_VERTEX_ATTRIB_ARRAY_STRIDE     0x8624
+#define GL_VERTEX_ATTRIB_ARRAY_TYPE       0x8625
+#define GL_VERTEX_ATTRIB_ARRAY_POINTER    0x8645
+#define GL_BLEND_EQUATION_ALPHA           0x883D
+#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
+#define GL_FRAGMENT_SHADER                0x8B30
+#define GL_VERTEX_SHADER                  0x8B31
+#define GL_COMPILE_STATUS                 0x8B81
+#define GL_LINK_STATUS                    0x8B82
+#define GL_INFO_LOG_LENGTH                0x8B84
+#define GL_CURRENT_PROGRAM                0x8B8D
+#define GL_UPPER_LEFT                     0x8CA2
+typedef void (APIENTRYP PFNGLBLENDEQUATIONSEPARATEPROC) (GLenum modeRGB, GLenum modeAlpha);
+typedef void (APIENTRYP PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader);
+typedef void (APIENTRYP PFNGLCOMPILESHADERPROC) (GLuint shader);
+typedef GLuint (APIENTRYP PFNGLCREATEPROGRAMPROC) (void);
+typedef GLuint (APIENTRYP PFNGLCREATESHADERPROC) (GLenum type);
+typedef void (APIENTRYP PFNGLDELETEPROGRAMPROC) (GLuint program);
+typedef void (APIENTRYP PFNGLDELETESHADERPROC) (GLuint shader);
+typedef void (APIENTRYP PFNGLDETACHSHADERPROC) (GLuint program, GLuint shader);
+typedef void (APIENTRYP PFNGLDISABLEVERTEXATTRIBARRAYPROC) (GLuint index);
+typedef void (APIENTRYP PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index);
+typedef GLint (APIENTRYP PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const GLchar *name);
+typedef void (APIENTRYP PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params);
+typedef void (APIENTRYP PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
+typedef void (APIENTRYP PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
+typedef void (APIENTRYP PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
+typedef GLint (APIENTRYP PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const GLchar *name);
+typedef void (APIENTRYP PFNGLGETVERTEXATTRIBIVPROC) (GLuint index, GLenum pname, GLint *params);
+typedef void (APIENTRYP PFNGLGETVERTEXATTRIBPOINTERVPROC) (GLuint index, GLenum pname, void **pointer);
+typedef GLboolean (APIENTRYP PFNGLISPROGRAMPROC) (GLuint program);
+typedef void (APIENTRYP PFNGLLINKPROGRAMPROC) (GLuint program);
+typedef void (APIENTRYP PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
+typedef void (APIENTRYP PFNGLUSEPROGRAMPROC) (GLuint program);
+typedef void (APIENTRYP PFNGLUNIFORM1IPROC) (GLint location, GLint v0);
+typedef void (APIENTRYP PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+typedef void (APIENTRYP PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha);
+GLAPI void APIENTRY glAttachShader (GLuint program, GLuint shader);
+GLAPI void APIENTRY glCompileShader (GLuint shader);
+GLAPI GLuint APIENTRY glCreateProgram (void);
+GLAPI GLuint APIENTRY glCreateShader (GLenum type);
+GLAPI void APIENTRY glDeleteProgram (GLuint program);
+GLAPI void APIENTRY glDeleteShader (GLuint shader);
+GLAPI void APIENTRY glDetachShader (GLuint program, GLuint shader);
+GLAPI void APIENTRY glDisableVertexAttribArray (GLuint index);
+GLAPI void APIENTRY glEnableVertexAttribArray (GLuint index);
+GLAPI GLint APIENTRY glGetAttribLocation (GLuint program, const GLchar *name);
+GLAPI void APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint *params);
+GLAPI void APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
+GLAPI void APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint *params);
+GLAPI void APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
+GLAPI GLint APIENTRY glGetUniformLocation (GLuint program, const GLchar *name);
+GLAPI void APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint *params);
+GLAPI void APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, void **pointer);
+GLAPI GLboolean APIENTRY glIsProgram (GLuint program);
+GLAPI void APIENTRY glLinkProgram (GLuint program);
+GLAPI void APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
+GLAPI void APIENTRY glUseProgram (GLuint program);
+GLAPI void APIENTRY glUniform1i (GLint location, GLint v0);
+GLAPI void APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+GLAPI void APIENTRY glVertexAttribPointer (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
+#endif
+#endif /* GL_VERSION_2_0 */
+#ifndef GL_VERSION_2_1
+#define GL_PIXEL_UNPACK_BUFFER            0x88EC
+#define GL_PIXEL_UNPACK_BUFFER_BINDING    0x88EF
+#endif /* GL_VERSION_2_1 */
+#ifndef GL_VERSION_3_0
+typedef khronos_uint16_t GLhalf;
+#define GL_MAJOR_VERSION                  0x821B
+#define GL_MINOR_VERSION                  0x821C
+#define GL_NUM_EXTENSIONS                 0x821D
+#define GL_FRAMEBUFFER_SRGB               0x8DB9
+#define GL_VERTEX_ARRAY_BINDING           0x85B5
+typedef void (APIENTRYP PFNGLGETBOOLEANI_VPROC) (GLenum target, GLuint index, GLboolean *data);
+typedef void (APIENTRYP PFNGLGETINTEGERI_VPROC) (GLenum target, GLuint index, GLint *data);
+typedef const GLubyte *(APIENTRYP PFNGLGETSTRINGIPROC) (GLenum name, GLuint index);
+typedef void (APIENTRYP PFNGLBINDVERTEXARRAYPROC) (GLuint array);
+typedef void (APIENTRYP PFNGLDELETEVERTEXARRAYSPROC) (GLsizei n, const GLuint *arrays);
+typedef void (APIENTRYP PFNGLGENVERTEXARRAYSPROC) (GLsizei n, GLuint *arrays);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI const GLubyte *APIENTRY glGetStringi (GLenum name, GLuint index);
+GLAPI void APIENTRY glBindVertexArray (GLuint array);
+GLAPI void APIENTRY glDeleteVertexArrays (GLsizei n, const GLuint *arrays);
+GLAPI void APIENTRY glGenVertexArrays (GLsizei n, GLuint *arrays);
+#endif
+#endif /* GL_VERSION_3_0 */
+#ifndef GL_VERSION_3_1
+#define GL_VERSION_3_1 1
+#define GL_PRIMITIVE_RESTART              0x8F9D
+#endif /* GL_VERSION_3_1 */
+#ifndef GL_VERSION_3_2
+#define GL_VERSION_3_2 1
+typedef struct __GLsync *GLsync;
+typedef khronos_uint64_t GLuint64;
+typedef khronos_int64_t GLint64;
+#define GL_CONTEXT_COMPATIBILITY_PROFILE_BIT 0x00000002
+#define GL_CONTEXT_PROFILE_MASK           0x9126
+typedef void (APIENTRYP PFNGLDRAWELEMENTSBASEVERTEXPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices, GLint basevertex);
+typedef void (APIENTRYP PFNGLGETINTEGER64I_VPROC) (GLenum target, GLuint index, GLint64 *data);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glDrawElementsBaseVertex (GLenum mode, GLsizei count, GLenum type, const void *indices, GLint basevertex);
+#endif
+#endif /* GL_VERSION_3_2 */
+#ifndef GL_VERSION_3_3
+#define GL_VERSION_3_3 1
+#define GL_SAMPLER_BINDING                0x8919
+typedef void (APIENTRYP PFNGLBINDSAMPLERPROC) (GLuint unit, GLuint sampler);
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glBindSampler (GLuint unit, GLuint sampler);
+#endif
+#endif /* GL_VERSION_3_3 */
+#ifndef GL_VERSION_4_1
+typedef void (APIENTRYP PFNGLGETFLOATI_VPROC) (GLenum target, GLuint index, GLfloat *data);
+typedef void (APIENTRYP PFNGLGETDOUBLEI_VPROC) (GLenum target, GLuint index, GLdouble *data);
+#endif /* GL_VERSION_4_1 */
+#ifndef GL_VERSION_4_3
+typedef void (APIENTRY  *GLDEBUGPROC)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
+#endif /* GL_VERSION_4_3 */
+#ifndef GL_VERSION_4_5
+#define GL_CLIP_ORIGIN                    0x935C
+typedef void (APIENTRYP PFNGLGETTRANSFORMFEEDBACKI_VPROC) (GLuint xfb, GLenum pname, GLuint index, GLint *param);
+typedef void (APIENTRYP PFNGLGETTRANSFORMFEEDBACKI64_VPROC) (GLuint xfb, GLenum pname, GLuint index, GLint64 *param);
+#endif /* GL_VERSION_4_5 */
+#ifndef GL_ARB_bindless_texture
+typedef khronos_uint64_t GLuint64EXT;
+#endif /* GL_ARB_bindless_texture */
+#ifndef GL_ARB_cl_event
+struct _cl_context;
+struct _cl_event;
+#endif /* GL_ARB_cl_event */
+#ifndef GL_ARB_clip_control
+#define GL_ARB_clip_control 1
+#endif /* GL_ARB_clip_control */
+#ifndef GL_ARB_debug_output
+typedef void (APIENTRY  *GLDEBUGPROCARB)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
+#endif /* GL_ARB_debug_output */
+#ifndef GL_EXT_EGL_image_storage
+typedef void *GLeglImageOES;
+#endif /* GL_EXT_EGL_image_storage */
+#ifndef GL_EXT_direct_state_access
+typedef void (APIENTRYP PFNGLGETFLOATI_VEXTPROC) (GLenum pname, GLuint index, GLfloat *params);
+typedef void (APIENTRYP PFNGLGETDOUBLEI_VEXTPROC) (GLenum pname, GLuint index, GLdouble *params);
+typedef void (APIENTRYP PFNGLGETPOINTERI_VEXTPROC) (GLenum pname, GLuint index, void **params);
+typedef void (APIENTRYP PFNGLGETVERTEXARRAYINTEGERI_VEXTPROC) (GLuint vaobj, GLuint index, GLenum pname, GLint *param);
+typedef void (APIENTRYP PFNGLGETVERTEXARRAYPOINTERI_VEXTPROC) (GLuint vaobj, GLuint index, GLenum pname, void **param);
+#endif /* GL_EXT_direct_state_access */
+#ifndef GL_NV_draw_vulkan_image
+typedef void (APIENTRY  *GLVULKANPROCNV)(void);
+#endif /* GL_NV_draw_vulkan_image */
+#ifndef GL_NV_gpu_shader5
+typedef khronos_int64_t GLint64EXT;
+#endif /* GL_NV_gpu_shader5 */
+#ifndef GL_NV_vertex_buffer_unified_memory
+typedef void (APIENTRYP PFNGLGETINTEGERUI64I_VNVPROC) (GLenum value, GLuint index, GLuint64EXT *result);
+#endif /* GL_NV_vertex_buffer_unified_memory */
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#ifndef GL3W_API
+#define GL3W_API
+#endif
+
+#ifndef __gl_h_
+#define __gl_h_
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define GL3W_OK 0
+#define GL3W_ERROR_INIT -1
+#define GL3W_ERROR_LIBRARY_OPEN -2
+#define GL3W_ERROR_OPENGL_VERSION -3
+
+typedef void (*GL3WglProc)(void);
+typedef GL3WglProc (*GL3WGetProcAddressProc)(const char *proc);
+
+/* gl3w api */
+GL3W_API int imgl3wInit(void);
+GL3W_API int imgl3wInit2(GL3WGetProcAddressProc proc);
+GL3W_API int imgl3wIsSupported(int major, int minor);
+GL3W_API GL3WglProc imgl3wGetProcAddress(const char *proc);
+
+/* gl3w internal state */
+union ImGL3WProcs {
+    GL3WglProc ptr[59];
+    struct {
+        PFNGLACTIVETEXTUREPROC            ActiveTexture;
+        PFNGLATTACHSHADERPROC             AttachShader;
+        PFNGLBINDBUFFERPROC               BindBuffer;
+        PFNGLBINDSAMPLERPROC              BindSampler;
+        PFNGLBINDTEXTUREPROC              BindTexture;
+        PFNGLBINDVERTEXARRAYPROC          BindVertexArray;
+        PFNGLBLENDEQUATIONPROC            BlendEquation;
+        PFNGLBLENDEQUATIONSEPARATEPROC    BlendEquationSeparate;
+        PFNGLBLENDFUNCSEPARATEPROC        BlendFuncSeparate;
+        PFNGLBUFFERDATAPROC               BufferData;
+        PFNGLBUFFERSUBDATAPROC            BufferSubData;
+        PFNGLCLEARPROC                    Clear;
+        PFNGLCLEARCOLORPROC               ClearColor;
+        PFNGLCOMPILESHADERPROC            CompileShader;
+        PFNGLCREATEPROGRAMPROC            CreateProgram;
+        PFNGLCREATESHADERPROC             CreateShader;
+        PFNGLDELETEBUFFERSPROC            DeleteBuffers;
+        PFNGLDELETEPROGRAMPROC            DeleteProgram;
+        PFNGLDELETESHADERPROC             DeleteShader;
+        PFNGLDELETETEXTURESPROC           DeleteTextures;
+        PFNGLDELETEVERTEXARRAYSPROC       DeleteVertexArrays;
+        PFNGLDETACHSHADERPROC             DetachShader;
+        PFNGLDISABLEPROC                  Disable;
+        PFNGLDISABLEVERTEXATTRIBARRAYPROC DisableVertexAttribArray;
+        PFNGLDRAWELEMENTSPROC             DrawElements;
+        PFNGLDRAWELEMENTSBASEVERTEXPROC   DrawElementsBaseVertex;
+        PFNGLENABLEPROC                   Enable;
+        PFNGLENABLEVERTEXATTRIBARRAYPROC  EnableVertexAttribArray;
+        PFNGLFLUSHPROC                    Flush;
+        PFNGLGENBUFFERSPROC               GenBuffers;
+        PFNGLGENTEXTURESPROC              GenTextures;
+        PFNGLGENVERTEXARRAYSPROC          GenVertexArrays;
+        PFNGLGETATTRIBLOCATIONPROC        GetAttribLocation;
+        PFNGLGETERRORPROC                 GetError;
+        PFNGLGETINTEGERVPROC              GetIntegerv;
+        PFNGLGETPROGRAMINFOLOGPROC        GetProgramInfoLog;
+        PFNGLGETPROGRAMIVPROC             GetProgramiv;
+        PFNGLGETSHADERINFOLOGPROC         GetShaderInfoLog;
+        PFNGLGETSHADERIVPROC              GetShaderiv;
+        PFNGLGETSTRINGPROC                GetString;
+        PFNGLGETSTRINGIPROC               GetStringi;
+        PFNGLGETUNIFORMLOCATIONPROC       GetUniformLocation;
+        PFNGLGETVERTEXATTRIBPOINTERVPROC  GetVertexAttribPointerv;
+        PFNGLGETVERTEXATTRIBIVPROC        GetVertexAttribiv;
+        PFNGLISENABLEDPROC                IsEnabled;
+        PFNGLISPROGRAMPROC                IsProgram;
+        PFNGLLINKPROGRAMPROC              LinkProgram;
+        PFNGLPIXELSTOREIPROC              PixelStorei;
+        PFNGLPOLYGONMODEPROC              PolygonMode;
+        PFNGLREADPIXELSPROC               ReadPixels;
+        PFNGLSCISSORPROC                  Scissor;
+        PFNGLSHADERSOURCEPROC             ShaderSource;
+        PFNGLTEXIMAGE2DPROC               TexImage2D;
+        PFNGLTEXPARAMETERIPROC            TexParameteri;
+        PFNGLUNIFORM1IPROC                Uniform1i;
+        PFNGLUNIFORMMATRIX4FVPROC         UniformMatrix4fv;
+        PFNGLUSEPROGRAMPROC               UseProgram;
+        PFNGLVERTEXATTRIBPOINTERPROC      VertexAttribPointer;
+        PFNGLVIEWPORTPROC                 Viewport;
+    } gl;
+};
+
+GL3W_API extern union ImGL3WProcs imgl3wProcs;
+
+/* OpenGL functions */
+#define glActiveTexture                   imgl3wProcs.gl.ActiveTexture
+#define glAttachShader                    imgl3wProcs.gl.AttachShader
+#define glBindBuffer                      imgl3wProcs.gl.BindBuffer
+#define glBindSampler                     imgl3wProcs.gl.BindSampler
+#define glBindTexture                     imgl3wProcs.gl.BindTexture
+#define glBindVertexArray                 imgl3wProcs.gl.BindVertexArray
+#define glBlendEquation                   imgl3wProcs.gl.BlendEquation
+#define glBlendEquationSeparate           imgl3wProcs.gl.BlendEquationSeparate
+#define glBlendFuncSeparate               imgl3wProcs.gl.BlendFuncSeparate
+#define glBufferData                      imgl3wProcs.gl.BufferData
+#define glBufferSubData                   imgl3wProcs.gl.BufferSubData
+#define glClear                           imgl3wProcs.gl.Clear
+#define glClearColor                      imgl3wProcs.gl.ClearColor
+#define glCompileShader                   imgl3wProcs.gl.CompileShader
+#define glCreateProgram                   imgl3wProcs.gl.CreateProgram
+#define glCreateShader                    imgl3wProcs.gl.CreateShader
+#define glDeleteBuffers                   imgl3wProcs.gl.DeleteBuffers
+#define glDeleteProgram                   imgl3wProcs.gl.DeleteProgram
+#define glDeleteShader                    imgl3wProcs.gl.DeleteShader
+#define glDeleteTextures                  imgl3wProcs.gl.DeleteTextures
+#define glDeleteVertexArrays              imgl3wProcs.gl.DeleteVertexArrays
+#define glDetachShader                    imgl3wProcs.gl.DetachShader
+#define glDisable                         imgl3wProcs.gl.Disable
+#define glDisableVertexAttribArray        imgl3wProcs.gl.DisableVertexAttribArray
+#define glDrawElements                    imgl3wProcs.gl.DrawElements
+#define glDrawElementsBaseVertex          imgl3wProcs.gl.DrawElementsBaseVertex
+#define glEnable                          imgl3wProcs.gl.Enable
+#define glEnableVertexAttribArray         imgl3wProcs.gl.EnableVertexAttribArray
+#define glFlush                           imgl3wProcs.gl.Flush
+#define glGenBuffers                      imgl3wProcs.gl.GenBuffers
+#define glGenTextures                     imgl3wProcs.gl.GenTextures
+#define glGenVertexArrays                 imgl3wProcs.gl.GenVertexArrays
+#define glGetAttribLocation               imgl3wProcs.gl.GetAttribLocation
+#define glGetError                        imgl3wProcs.gl.GetError
+#define glGetIntegerv                     imgl3wProcs.gl.GetIntegerv
+#define glGetProgramInfoLog               imgl3wProcs.gl.GetProgramInfoLog
+#define glGetProgramiv                    imgl3wProcs.gl.GetProgramiv
+#define glGetShaderInfoLog                imgl3wProcs.gl.GetShaderInfoLog
+#define glGetShaderiv                     imgl3wProcs.gl.GetShaderiv
+#define glGetString                       imgl3wProcs.gl.GetString
+#define glGetStringi                      imgl3wProcs.gl.GetStringi
+#define glGetUniformLocation              imgl3wProcs.gl.GetUniformLocation
+#define glGetVertexAttribPointerv         imgl3wProcs.gl.GetVertexAttribPointerv
+#define glGetVertexAttribiv               imgl3wProcs.gl.GetVertexAttribiv
+#define glIsEnabled                       imgl3wProcs.gl.IsEnabled
+#define glIsProgram                       imgl3wProcs.gl.IsProgram
+#define glLinkProgram                     imgl3wProcs.gl.LinkProgram
+#define glPixelStorei                     imgl3wProcs.gl.PixelStorei
+#define glPolygonMode                     imgl3wProcs.gl.PolygonMode
+#define glReadPixels                      imgl3wProcs.gl.ReadPixels
+#define glScissor                         imgl3wProcs.gl.Scissor
+#define glShaderSource                    imgl3wProcs.gl.ShaderSource
+#define glTexImage2D                      imgl3wProcs.gl.TexImage2D
+#define glTexParameteri                   imgl3wProcs.gl.TexParameteri
+#define glUniform1i                       imgl3wProcs.gl.Uniform1i
+#define glUniformMatrix4fv                imgl3wProcs.gl.UniformMatrix4fv
+#define glUseProgram                      imgl3wProcs.gl.UseProgram
+#define glVertexAttribPointer             imgl3wProcs.gl.VertexAttribPointer
+#define glViewport                        imgl3wProcs.gl.Viewport
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#ifdef IMGL3W_IMPL
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+
+#define GL3W_ARRAY_SIZE(x)  (sizeof(x) / sizeof((x)[0]))
+
+#if defined(_WIN32)
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN 1
+#endif
+#include <windows.h>
+
+static HMODULE libgl;
+typedef PROC(__stdcall* GL3WglGetProcAddr)(LPCSTR);
+static GL3WglGetProcAddr wgl_get_proc_address;
+
+static int open_libgl(void)
+{
+    libgl = LoadLibraryA("opengl32.dll");
+    if (!libgl)
+        return GL3W_ERROR_LIBRARY_OPEN;
+    wgl_get_proc_address = (GL3WglGetProcAddr)GetProcAddress(libgl, "wglGetProcAddress");
+    return GL3W_OK;
+}
+
+static void close_libgl(void) { FreeLibrary(libgl); }
+static GL3WglProc get_proc(const char *proc)
+{
+    GL3WglProc res;
+    res = (GL3WglProc)wgl_get_proc_address(proc);
+    if (!res)
+        res = (GL3WglProc)GetProcAddress(libgl, proc);
+    return res;
+}
+#elif defined(__APPLE__)
+#include <dlfcn.h>
+
+static void *libgl;
+static int open_libgl(void)
+{
+    libgl = dlopen("/System/Library/Frameworks/OpenGL.framework/OpenGL", RTLD_LAZY | RTLD_LOCAL);
+    if (!libgl)
+        return GL3W_ERROR_LIBRARY_OPEN;
+    return GL3W_OK;
+}
+
+static void close_libgl(void) { dlclose(libgl); }
+
+static GL3WglProc get_proc(const char *proc)
+{
+    GL3WglProc res;
+    *(void **)(&res) = dlsym(libgl, proc);
+    return res;
+}
+#else
+#include <dlfcn.h>
+
+static void* libgl;  // OpenGL library
+static void* libglx;  // GLX library
+static void* libegl;  // EGL library
+static GL3WGetProcAddressProc gl_get_proc_address;
+
+static void close_libgl(void)
+{
+    if (libgl) {
+        dlclose(libgl);
+        libgl = NULL;
+    }
+    if (libegl) {
+        dlclose(libegl);
+        libegl = NULL;
+    }
+    if (libglx) {
+        dlclose(libglx);
+        libglx = NULL;
+    }
+}
+
+static int is_library_loaded(const char* name, void** lib)
+{
+    *lib = dlopen(name, RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
+    return *lib != NULL;
+}
+
+static int open_libs(void)
+{
+    // On Linux we have two APIs to get process addresses: EGL and GLX.
+    // EGL is supported under both X11 and Wayland, whereas GLX is X11-specific.
+
+    libgl = NULL;
+    libegl = NULL;
+    libglx = NULL;
+
+    // First check what's already loaded, the windowing library might have
+    // already loaded either EGL or GLX and we want to use the same one.
+
+    if (is_library_loaded("libEGL.so.1", &libegl) ||
+        is_library_loaded("libGLX.so.0", &libglx)) {
+        libgl = dlopen("libOpenGL.so.0", RTLD_LAZY | RTLD_LOCAL);
+        if (libgl)
+            return GL3W_OK;
+        else
+            close_libgl();
+    }
+
+    if (is_library_loaded("libGL.so", &libgl))
+        return GL3W_OK;
+    if (is_library_loaded("libGL.so.1", &libgl))
+        return GL3W_OK;
+    if (is_library_loaded("libGL.so.3", &libgl))
+        return GL3W_OK;
+
+    // Neither is already loaded, so we have to load one.  Try EGL first
+    // because it is supported under both X11 and Wayland.
+
+    // Load OpenGL + EGL
+    libgl = dlopen("libOpenGL.so.0", RTLD_LAZY | RTLD_LOCAL);
+    libegl = dlopen("libEGL.so.1", RTLD_LAZY | RTLD_LOCAL);
+    if (libgl && libegl)
+        return GL3W_OK;
+    else
+        close_libgl();
+
+    // Fall back to legacy libGL, which includes GLX
+    // While most systems use libGL.so.1, NetBSD seems to use that libGL.so.3. See https://github.com/ocornut/imgui/issues/6983
+    libgl = dlopen("libGL.so", RTLD_LAZY | RTLD_LOCAL);
+    if (!libgl)
+        libgl = dlopen("libGL.so.1", RTLD_LAZY | RTLD_LOCAL);
+    if (!libgl)
+        libgl = dlopen("libGL.so.3", RTLD_LAZY | RTLD_LOCAL);
+
+    if (libgl)
+        return GL3W_OK;
+
+    return GL3W_ERROR_LIBRARY_OPEN;
+}
+
+static int open_libgl(void)
+{
+    int res = open_libs();
+    if (res)
+        return res;
+
+    if (libegl)
+        *(void**)(&gl_get_proc_address) = dlsym(libegl, "eglGetProcAddress");
+    else if (libglx)
+        *(void**)(&gl_get_proc_address) = dlsym(libglx, "glXGetProcAddressARB");
+    else
+        *(void**)(&gl_get_proc_address) = dlsym(libgl, "glXGetProcAddressARB");
+
+    if (!gl_get_proc_address) {
+        close_libgl();
+        return GL3W_ERROR_LIBRARY_OPEN;
+    }
+
+    return GL3W_OK;
+}
+
+static GL3WglProc get_proc(const char* proc)
+{
+    GL3WglProc res = NULL;
+
+    // Before EGL version 1.5, eglGetProcAddress doesn't support querying core
+    // functions and may return a dummy function if we try, so try to load the
+    // function from the GL library directly first.
+    if (libegl)
+        *(void**)(&res) = dlsym(libgl, proc);
+
+    if (!res)
+        res = gl_get_proc_address(proc);
+
+    if (!libegl && !res)
+        *(void**)(&res) = dlsym(libgl, proc);
+
+    return res;
+}
+#endif
+
+static struct { int major, minor; } version;
+
+static int parse_version(void)
+{
+    if (!glGetIntegerv)
+        return GL3W_ERROR_INIT;
+    glGetIntegerv(GL_MAJOR_VERSION, &version.major);
+    glGetIntegerv(GL_MINOR_VERSION, &version.minor);
+    if (version.major == 0 && version.minor == 0)
+    {
+        // Query GL_VERSION in desktop GL 2.x, the string will start with "<major>.<minor>"
+        if (const char* gl_version = (const char*)glGetString(GL_VERSION))
+            sscanf(gl_version, "%d.%d", &version.major, &version.minor);
+    }
+    if (version.major < 2)
+        return GL3W_ERROR_OPENGL_VERSION;
+    return GL3W_OK;
+}
+
+static void load_procs(GL3WGetProcAddressProc proc);
+
+int imgl3wInit(void)
+{
+    int res = open_libgl();
+    if (res)
+        return res;
+    atexit(close_libgl);
+    return imgl3wInit2(get_proc);
+}
+
+int imgl3wInit2(GL3WGetProcAddressProc proc)
+{
+    load_procs(proc);
+    return parse_version();
+}
+
+int imgl3wIsSupported(int major, int minor)
+{
+    if (major < 2)
+        return 0;
+    if (version.major == major)
+        return version.minor >= minor;
+    return version.major >= major;
+}
+
+GL3WglProc imgl3wGetProcAddress(const char *proc) { return get_proc(proc); }
+
+static const char *proc_names[] = {
+    "glActiveTexture",
+    "glAttachShader",
+    "glBindBuffer",
+    "glBindSampler",
+    "glBindTexture",
+    "glBindVertexArray",
+    "glBlendEquation",
+    "glBlendEquationSeparate",
+    "glBlendFuncSeparate",
+    "glBufferData",
+    "glBufferSubData",
+    "glClear",
+    "glClearColor",
+    "glCompileShader",
+    "glCreateProgram",
+    "glCreateShader",
+    "glDeleteBuffers",
+    "glDeleteProgram",
+    "glDeleteShader",
+    "glDeleteTextures",
+    "glDeleteVertexArrays",
+    "glDetachShader",
+    "glDisable",
+    "glDisableVertexAttribArray",
+    "glDrawElements",
+    "glDrawElementsBaseVertex",
+    "glEnable",
+    "glEnableVertexAttribArray",
+    "glFlush",
+    "glGenBuffers",
+    "glGenTextures",
+    "glGenVertexArrays",
+    "glGetAttribLocation",
+    "glGetError",
+    "glGetIntegerv",
+    "glGetProgramInfoLog",
+    "glGetProgramiv",
+    "glGetShaderInfoLog",
+    "glGetShaderiv",
+    "glGetString",
+    "glGetStringi",
+    "glGetUniformLocation",
+    "glGetVertexAttribPointerv",
+    "glGetVertexAttribiv",
+    "glIsEnabled",
+    "glIsProgram",
+    "glLinkProgram",
+    "glPixelStorei",
+    "glPolygonMode",
+    "glReadPixels",
+    "glScissor",
+    "glShaderSource",
+    "glTexImage2D",
+    "glTexParameteri",
+    "glUniform1i",
+    "glUniformMatrix4fv",
+    "glUseProgram",
+    "glVertexAttribPointer",
+    "glViewport",
+};
+
+GL3W_API union ImGL3WProcs imgl3wProcs;
+
+static void load_procs(GL3WGetProcAddressProc proc)
+{
+    size_t i;
+    for (i = 0; i < GL3W_ARRAY_SIZE(proc_names); i++)
+        imgl3wProcs.ptr[i] = proc(proc_names[i]);
+}
+
+#ifdef __cplusplus
+}
+#endif
+#endif

include/imstb_rectpack.h

@@ -0,0 +1,627 @@
+// [DEAR IMGUI]
+// This is a slightly modified version of stb_rect_pack.h 1.01.
+// Grep for [DEAR IMGUI] to find the changes.
+// 
+// stb_rect_pack.h - v1.01 - public domain - rectangle packing
+// Sean Barrett 2014
+//
+// Useful for e.g. packing rectangular textures into an atlas.
+// Does not do rotation.
+//
+// Before #including,
+//
+//    #define STB_RECT_PACK_IMPLEMENTATION
+//
+// in the file that you want to have the implementation.
+//
+// Not necessarily the awesomest packing method, but better than
+// the totally naive one in stb_truetype (which is primarily what
+// this is meant to replace).
+//
+// Has only had a few tests run, may have issues.
+//
+// More docs to come.
+//
+// No memory allocations; uses qsort() and assert() from stdlib.
+// Can override those by defining STBRP_SORT and STBRP_ASSERT.
+//
+// This library currently uses the Skyline Bottom-Left algorithm.
+//
+// Please note: better rectangle packers are welcome! Please
+// implement them to the same API, but with a different init
+// function.
+//
+// Credits
+//
+//  Library
+//    Sean Barrett
+//  Minor features
+//    Martins Mozeiko
+//    github:IntellectualKitty
+//
+//  Bugfixes / warning fixes
+//    Jeremy Jaussaud
+//    Fabian Giesen
+//
+// Version history:
+//
+//     1.01  (2021-07-11)  always use large rect mode, expose STBRP__MAXVAL in public section
+//     1.00  (2019-02-25)  avoid small space waste; gracefully fail too-wide rectangles
+//     0.99  (2019-02-07)  warning fixes
+//     0.11  (2017-03-03)  return packing success/fail result
+//     0.10  (2016-10-25)  remove cast-away-const to avoid warnings
+//     0.09  (2016-08-27)  fix compiler warnings
+//     0.08  (2015-09-13)  really fix bug with empty rects (w=0 or h=0)
+//     0.07  (2015-09-13)  fix bug with empty rects (w=0 or h=0)
+//     0.06  (2015-04-15)  added STBRP_SORT to allow replacing qsort
+//     0.05:  added STBRP_ASSERT to allow replacing assert
+//     0.04:  fixed minor bug in STBRP_LARGE_RECTS support
+//     0.01:  initial release
+//
+// LICENSE
+//
+//   See end of file for license information.
+
+//////////////////////////////////////////////////////////////////////////////
+//
+//       INCLUDE SECTION
+//
+
+#ifndef STB_INCLUDE_STB_RECT_PACK_H
+#define STB_INCLUDE_STB_RECT_PACK_H
+
+#define STB_RECT_PACK_VERSION  1
+
+#ifdef STBRP_STATIC
+#define STBRP_DEF static
+#else
+#define STBRP_DEF extern
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct stbrp_context stbrp_context;
+typedef struct stbrp_node    stbrp_node;
+typedef struct stbrp_rect    stbrp_rect;
+
+typedef int            stbrp_coord;
+
+#define STBRP__MAXVAL  0x7fffffff
+// Mostly for internal use, but this is the maximum supported coordinate value.
+
+STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
+// Assign packed locations to rectangles. The rectangles are of type
+// 'stbrp_rect' defined below, stored in the array 'rects', and there
+// are 'num_rects' many of them.
+//
+// Rectangles which are successfully packed have the 'was_packed' flag
+// set to a non-zero value and 'x' and 'y' store the minimum location
+// on each axis (i.e. bottom-left in cartesian coordinates, top-left
+// if you imagine y increasing downwards). Rectangles which do not fit
+// have the 'was_packed' flag set to 0.
+//
+// You should not try to access the 'rects' array from another thread
+// while this function is running, as the function temporarily reorders
+// the array while it executes.
+//
+// To pack into another rectangle, you need to call stbrp_init_target
+// again. To continue packing into the same rectangle, you can call
+// this function again. Calling this multiple times with multiple rect
+// arrays will probably produce worse packing results than calling it
+// a single time with the full rectangle array, but the option is
+// available.
+//
+// The function returns 1 if all of the rectangles were successfully
+// packed and 0 otherwise.
+
+struct stbrp_rect
+{
+   // reserved for your use:
+   int            id;
+
+   // input:
+   stbrp_coord    w, h;
+
+   // output:
+   stbrp_coord    x, y;
+   int            was_packed;  // non-zero if valid packing
+
+}; // 16 bytes, nominally
+
+
+STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
+// Initialize a rectangle packer to:
+//    pack a rectangle that is 'width' by 'height' in dimensions
+//    using temporary storage provided by the array 'nodes', which is 'num_nodes' long
+//
+// You must call this function every time you start packing into a new target.
+//
+// There is no "shutdown" function. The 'nodes' memory must stay valid for
+// the following stbrp_pack_rects() call (or calls), but can be freed after
+// the call (or calls) finish.
+//
+// Note: to guarantee best results, either:
+//       1. make sure 'num_nodes' >= 'width'
+//   or  2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
+//
+// If you don't do either of the above things, widths will be quantized to multiples
+// of small integers to guarantee the algorithm doesn't run out of temporary storage.
+//
+// If you do #2, then the non-quantized algorithm will be used, but the algorithm
+// may run out of temporary storage and be unable to pack some rectangles.
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
+// Optionally call this function after init but before doing any packing to
+// change the handling of the out-of-temp-memory scenario, described above.
+// If you call init again, this will be reset to the default (false).
+
+
+STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
+// Optionally select which packing heuristic the library should use. Different
+// heuristics will produce better/worse results for different data sets.
+// If you call init again, this will be reset to the default.
+
+enum
+{
+   STBRP_HEURISTIC_Skyline_default=0,
+   STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
+   STBRP_HEURISTIC_Skyline_BF_sortHeight
+};
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// the details of the following structures don't matter to you, but they must
+// be visible so you can handle the memory allocations for them
+
+struct stbrp_node
+{
+   stbrp_coord  x,y;
+   stbrp_node  *next;
+};
+
+struct stbrp_context
+{
+   int width;
+   int height;
+   int align;
+   int init_mode;
+   int heuristic;
+   int num_nodes;
+   stbrp_node *active_head;
+   stbrp_node *free_head;
+   stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+//
+//     IMPLEMENTATION SECTION
+//
+
+#ifdef STB_RECT_PACK_IMPLEMENTATION
+#ifndef STBRP_SORT
+#include <stdlib.h>
+#define STBRP_SORT qsort
+#endif
+
+#ifndef STBRP_ASSERT
+#include <assert.h>
+#define STBRP_ASSERT assert
+#endif
+
+#ifdef _MSC_VER
+#define STBRP__NOTUSED(v)  (void)(v)
+#define STBRP__CDECL       __cdecl
+#else
+#define STBRP__NOTUSED(v)  (void)sizeof(v)
+#define STBRP__CDECL
+#endif
+
+enum
+{
+   STBRP__INIT_skyline = 1
+};
+
+STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
+{
+   switch (context->init_mode) {
+      case STBRP__INIT_skyline:
+         STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
+         context->heuristic = heuristic;
+         break;
+      default:
+         STBRP_ASSERT(0);
+   }
+}
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
+{
+   if (allow_out_of_mem)
+      // if it's ok to run out of memory, then don't bother aligning them;
+      // this gives better packing, but may fail due to OOM (even though
+      // the rectangles easily fit). @TODO a smarter approach would be to only
+      // quantize once we've hit OOM, then we could get rid of this parameter.
+      context->align = 1;
+   else {
+      // if it's not ok to run out of memory, then quantize the widths
+      // so that num_nodes is always enough nodes.
+      //
+      // I.e. num_nodes * align >= width
+      //                  align >= width / num_nodes
+      //                  align = ceil(width/num_nodes)
+
+      context->align = (context->width + context->num_nodes-1) / context->num_nodes;
+   }
+}
+
+STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
+{
+   int i;
+
+   for (i=0; i < num_nodes-1; ++i)
+      nodes[i].next = &nodes[i+1];
+   nodes[i].next = NULL;
+   context->init_mode = STBRP__INIT_skyline;
+   context->heuristic = STBRP_HEURISTIC_Skyline_default;
+   context->free_head = &nodes[0];
+   context->active_head = &context->extra[0];
+   context->width = width;
+   context->height = height;
+   context->num_nodes = num_nodes;
+   stbrp_setup_allow_out_of_mem(context, 0);
+
+   // node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
+   context->extra[0].x = 0;
+   context->extra[0].y = 0;
+   context->extra[0].next = &context->extra[1];
+   context->extra[1].x = (stbrp_coord) width;
+   context->extra[1].y = (1<<30);
+   context->extra[1].next = NULL;
+}
+
+// find minimum y position if it starts at x1
+static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
+{
+   stbrp_node *node = first;
+   int x1 = x0 + width;
+   int min_y, visited_width, waste_area;
+
+   STBRP__NOTUSED(c);
+
+   STBRP_ASSERT(first->x <= x0);
+
+   #if 0
+   // skip in case we're past the node
+   while (node->next->x <= x0)
+      ++node;
+   #else
+   STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
+   #endif
+
+   STBRP_ASSERT(node->x <= x0);
+
+   min_y = 0;
+   waste_area = 0;
+   visited_width = 0;
+   while (node->x < x1) {
+      if (node->y > min_y) {
+         // raise min_y higher.
+         // we've accounted for all waste up to min_y,
+         // but we'll now add more waste for everything we've visted
+         waste_area += visited_width * (node->y - min_y);
+         min_y = node->y;
+         // the first time through, visited_width might be reduced
+         if (node->x < x0)
+            visited_width += node->next->x - x0;
+         else
+            visited_width += node->next->x - node->x;
+      } else {
+         // add waste area
+         int under_width = node->next->x - node->x;
+         if (under_width + visited_width > width)
+            under_width = width - visited_width;
+         waste_area += under_width * (min_y - node->y);
+         visited_width += under_width;
+      }
+      node = node->next;
+   }
+
+   *pwaste = waste_area;
+   return min_y;
+}
+
+typedef struct
+{
+   int x,y;
+   stbrp_node **prev_link;
+} stbrp__findresult;
+
+static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
+{
+   int best_waste = (1<<30), best_x, best_y = (1 << 30);
+   stbrp__findresult fr;
+   stbrp_node **prev, *node, *tail, **best = NULL;
+
+   // align to multiple of c->align
+   width = (width + c->align - 1);
+   width -= width % c->align;
+   STBRP_ASSERT(width % c->align == 0);
+
+   // if it can't possibly fit, bail immediately
+   if (width > c->width || height > c->height) {
+      fr.prev_link = NULL;
+      fr.x = fr.y = 0;
+      return fr;
+   }
+
+   node = c->active_head;
+   prev = &c->active_head;
+   while (node->x + width <= c->width) {
+      int y,waste;
+      y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
+      if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
+         // bottom left
+         if (y < best_y) {
+            best_y = y;
+            best = prev;
+         }
+      } else {
+         // best-fit
+         if (y + height <= c->height) {
+            // can only use it if it first vertically
+            if (y < best_y || (y == best_y && waste < best_waste)) {
+               best_y = y;
+               best_waste = waste;
+               best = prev;
+            }
+         }
+      }
+      prev = &node->next;
+      node = node->next;
+   }
+
+   best_x = (best == NULL) ? 0 : (*best)->x;
+
+   // if doing best-fit (BF), we also have to try aligning right edge to each node position
+   //
+   // e.g, if fitting
+   //
+   //     ____________________
+   //    |____________________|
+   //
+   //            into
+   //
+   //   |                         |
+   //   |             ____________|
+   //   |____________|
+   //
+   // then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
+   //
+   // This makes BF take about 2x the time
+
+   if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
+      tail = c->active_head;
+      node = c->active_head;
+      prev = &c->active_head;
+      // find first node that's admissible
+      while (tail->x < width)
+         tail = tail->next;
+      while (tail) {
+         int xpos = tail->x - width;
+         int y,waste;
+         STBRP_ASSERT(xpos >= 0);
+         // find the left position that matches this
+         while (node->next->x <= xpos) {
+            prev = &node->next;
+            node = node->next;
+         }
+         STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
+         y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
+         if (y + height <= c->height) {
+            if (y <= best_y) {
+               if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
+                  best_x = xpos;
+                  //STBRP_ASSERT(y <= best_y); [DEAR IMGUI]
+                  best_y = y;
+                  best_waste = waste;
+                  best = prev;
+               }
+            }
+         }
+         tail = tail->next;
+      }
+   }
+
+   fr.prev_link = best;
+   fr.x = best_x;
+   fr.y = best_y;
+   return fr;
+}
+
+static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
+{
+   // find best position according to heuristic
+   stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
+   stbrp_node *node, *cur;
+
+   // bail if:
+   //    1. it failed
+   //    2. the best node doesn't fit (we don't always check this)
+   //    3. we're out of memory
+   if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
+      res.prev_link = NULL;
+      return res;
+   }
+
+   // on success, create new node
+   node = context->free_head;
+   node->x = (stbrp_coord) res.x;
+   node->y = (stbrp_coord) (res.y + height);
+
+   context->free_head = node->next;
+
+   // insert the new node into the right starting point, and
+   // let 'cur' point to the remaining nodes needing to be
+   // stiched back in
+
+   cur = *res.prev_link;
+   if (cur->x < res.x) {
+      // preserve the existing one, so start testing with the next one
+      stbrp_node *next = cur->next;
+      cur->next = node;
+      cur = next;
+   } else {
+      *res.prev_link = node;
+   }
+
+   // from here, traverse cur and free the nodes, until we get to one
+   // that shouldn't be freed
+   while (cur->next && cur->next->x <= res.x + width) {
+      stbrp_node *next = cur->next;
+      // move the current node to the free list
+      cur->next = context->free_head;
+      context->free_head = cur;
+      cur = next;
+   }
+
+   // stitch the list back in
+   node->next = cur;
+
+   if (cur->x < res.x + width)
+      cur->x = (stbrp_coord) (res.x + width);
+
+#ifdef _DEBUG
+   cur = context->active_head;
+   while (cur->x < context->width) {
+      STBRP_ASSERT(cur->x < cur->next->x);
+      cur = cur->next;
+   }
+   STBRP_ASSERT(cur->next == NULL);
+
+   {
+      int count=0;
+      cur = context->active_head;
+      while (cur) {
+         cur = cur->next;
+         ++count;
+      }
+      cur = context->free_head;
+      while (cur) {
+         cur = cur->next;
+         ++count;
+      }
+      STBRP_ASSERT(count == context->num_nodes+2);
+   }
+#endif
+
+   return res;
+}
+
+static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
+{
+   const stbrp_rect *p = (const stbrp_rect *) a;
+   const stbrp_rect *q = (const stbrp_rect *) b;
+   if (p->h > q->h)
+      return -1;
+   if (p->h < q->h)
+      return  1;
+   return (p->w > q->w) ? -1 : (p->w < q->w);
+}
+
+static int STBRP__CDECL rect_original_order(const void *a, const void *b)
+{
+   const stbrp_rect *p = (const stbrp_rect *) a;
+   const stbrp_rect *q = (const stbrp_rect *) b;
+   return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
+}
+
+STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
+{
+   int i, all_rects_packed = 1;
+
+   // we use the 'was_packed' field internally to allow sorting/unsorting
+   for (i=0; i < num_rects; ++i) {
+      rects[i].was_packed = i;
+   }
+
+   // sort according to heuristic
+   STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_height_compare);
+
+   for (i=0; i < num_rects; ++i) {
+      if (rects[i].w == 0 || rects[i].h == 0) {
+         rects[i].x = rects[i].y = 0;  // empty rect needs no space
+      } else {
+         stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
+         if (fr.prev_link) {
+            rects[i].x = (stbrp_coord) fr.x;
+            rects[i].y = (stbrp_coord) fr.y;
+         } else {
+            rects[i].x = rects[i].y = STBRP__MAXVAL;
+         }
+      }
+   }
+
+   // unsort
+   STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_original_order);
+
+   // set was_packed flags and all_rects_packed status
+   for (i=0; i < num_rects; ++i) {
+      rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
+      if (!rects[i].was_packed)
+         all_rects_packed = 0;
+   }
+
+   // return the all_rects_packed status
+   return all_rects_packed;
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+This software is available under 2 licenses -- choose whichever you prefer.
+------------------------------------------------------------------------------
+ALTERNATIVE A - MIT License
+Copyright (c) 2017 Sean Barrett
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+------------------------------------------------------------------------------
+ALTERNATIVE B - Public Domain (www.unlicense.org)
+This is free and unencumbered software released into the public domain.
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
+software, either in source code form or as a compiled binary, for any purpose,
+commercial or non-commercial, and by any means.
+In jurisdictions that recognize copyright laws, the author or authors of this
+software dedicate any and all copyright interest in the software to the public
+domain. We make this dedication for the benefit of the public at large and to
+the detriment of our heirs and successors. We intend this dedication to be an
+overt act of relinquishment in perpetuity of all present and future rights to
+this software under copyright law.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+------------------------------------------------------------------------------
+*/

main.py

@@ -0,0 +1,41 @@
+import trimesh
+
+def generate_vertex_array_from_model(file_path):
+    # Load the model using trimesh
+    mesh = trimesh.load(file_path)
+    
+    # Ensure the mesh has valid geometry
+    if not mesh.is_volume:
+        print("Warning: The loaded mesh is not a closed volume.")
+    
+    # Prepare vertex array data
+    vertices = []
+    for face in mesh.faces:
+        for vertex_index in face:
+            # Get the vertex position
+            position = mesh.vertices[vertex_index]
+            # Get the vertex normal
+            normal = mesh.vertex_normals[vertex_index]
+            # Add position and normal to the vertex array
+            vertices.extend([*position, *normal])
+    
+    return vertices
+
+# Save the vertex array to a formatted string
+def save_vertex_array_to_file(vertices, output_file):
+    with open(output_file, 'w') as f:
+        f.write("GLfloat vertices[] = {\n")
+        for i, value in enumerate(vertices):
+            f.write(f"    {value:.4f}f,")
+            if (i + 1) % 6 == 0:  # Add a newline after every vertex (6 values: 3 position + 3 normal)
+                f.write("\n")
+        f.write("};\n")
+
+# Example usage
+model_path = "./model.obj"  # Replace with the path to your model
+output_path = "output_vertex_array.txt"
+
+vertices = generate_vertex_array_from_model(model_path)
+save_vertex_array_to_file(vertices, output_path)
+
+print(f"Vertex array saved to {output_path}")

shaders/cam_frag.glsl

@@ -0,0 +1,7 @@
+#version 330 core
+in vec3 fragColor;
+out vec4 color;
+
+void main() {
+    color = vec4(fragColor, 1.0);
+}

shaders/cam_vertex.glsl

@@ -0,0 +1,16 @@
+#version 330 core
+layout(location = 0) in vec3 position;
+
+uniform vec3 lineStart;
+uniform vec3 lineEnd;
+
+uniform mat4 view;
+uniform mat4 projection;
+
+out vec3 fragColor;
+
+void main() {
+    vec3 worldPos = mix(lineStart, lineEnd, float(gl_VertexID));
+    gl_Position = projection * view * vec4(worldPos, 1.0);
+    fragColor = vec3(0.0, 1.0, 1.0); // Set line color
+}

shaders/fragment_shader.glsl

@@ -0,0 +1,163 @@
+#version 330 core
+out vec4 color;
+
+in vec3 FragPos;
+in vec3 Normal;
+
+uniform vec3 viewPos;
+
+// Point Lights
+struct PointLight {
+    vec3 position;
+    vec3 color;
+
+    float constant;
+    float linear;
+    float quadratic;
+};
+
+#define MAX_POINT_LIGHTS 256
+uniform int numPointLights;
+uniform PointLight pointLights[MAX_POINT_LIGHTS];
+
+// Directional Lights
+struct DirLight {
+    vec3 direction;
+    vec3 color;
+};
+
+#define MAX_DIR_LIGHTS 10
+uniform int numDirLights;
+uniform DirLight dirLights[MAX_DIR_LIGHTS];
+
+// Spotlights
+struct SpotLight {
+    vec3 position;
+    vec3 direction;
+    vec3 color;
+
+    float cutOff;       // Cosine of the inner cutoff angle
+    float outerCutOff;  // Cosine of the outer cutoff angle
+
+    float constant;
+    float linear;
+    float quadratic;
+};
+
+#define MAX_SPOT_LIGHTS 64
+uniform int numSpotLights;
+uniform SpotLight spotLights[MAX_SPOT_LIGHTS];
+
+uniform vec3 objectColor; // Fallback color
+uniform sampler2D texture1; // Texture sampler
+uniform bool useTexture; // Flag to determine if a texture is used
+
+in vec2 TexCoords;
+
+// Function to calculate lighting for a Point Light
+vec3 CalcPointLight(PointLight light, vec3 normal, vec3 viewDir, vec3 fragPos)
+{
+    // Ambient
+    float ambientStrength = 0.1;
+    vec3 ambient = ambientStrength * light.color;
+
+    // Diffuse
+    vec3 lightDir = normalize(light.position - fragPos);
+    float diff = max(dot(normal, lightDir), 0.0);
+    vec3 diffuse = diff * light.color;
+
+    // Specular
+    float specularStrength = 0.5;
+    vec3 reflectDir = reflect(-lightDir, normal);
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32);
+    vec3 specular = specularStrength * spec * light.color;
+
+    // Attenuation
+    float distance = length(light.position - fragPos);
+    float attenuation = 1.0 / (light.constant + light.linear * distance + 
+                               light.quadratic * (distance * distance));
+
+    return (ambient + diffuse + specular) * attenuation;
+}
+
+// Function to calculate lighting for a Directional Light
+vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir)
+{
+    // Ambient
+    float ambientStrength = 0.1;
+    vec3 ambient = ambientStrength * light.color;
+
+    // Diffuse
+    vec3 lightDir = normalize(-light.direction); // Directional light direction
+    float diff = max(dot(normal, lightDir), 0.0);
+    vec3 diffuse = diff * light.color;
+
+    // Specular
+    float specularStrength = 0.5;
+    vec3 reflectDir = reflect(-lightDir, normal);
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32);
+    vec3 specular = specularStrength * spec * light.color;
+
+    return (ambient + diffuse + specular);
+}
+
+// Function to calculate lighting for a Spotlight
+vec3 CalcSpotLight(SpotLight light, vec3 normal, vec3 viewDir, vec3 fragPos)
+{
+    // Ambient
+    float ambientStrength = 0.1;
+    vec3 ambient = ambientStrength * light.color;
+
+    // Diffuse
+    vec3 lightDir = normalize(light.position - fragPos);
+    float diff = max(dot(normal, lightDir), 0.0);
+    vec3 diffuse = diff * light.color;
+
+    // Specular
+    float specularStrength = 0.5;
+    vec3 reflectDir = reflect(-lightDir, normal);
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32);
+    vec3 specular = specularStrength * spec * light.color;
+
+    // Attenuation
+    float distance = length(light.position - fragPos);
+    float attenuation = 1.0 / (light.constant + light.linear * distance + 
+                               light.quadratic * (distance * distance));
+
+    // Spotlight intensity
+    vec3 spotDir = normalize(light.direction);
+    float theta = dot(lightDir, spotDir);
+    float epsilon = light.cutOff - light.outerCutOff;
+    float intensity = clamp((theta - light.outerCutOff) / epsilon, 0.0, 1.0);
+
+    return (ambient + diffuse + specular) * attenuation * intensity;
+}
+
+void main()
+{
+    vec3 norm = normalize(Normal);
+    vec3 viewDir = normalize(viewPos - FragPos);
+    vec3 result = vec3(0.0);
+
+    // Calculate Point Lights
+    for (int i = 0; i < numPointLights; ++i)
+    {
+        result += CalcPointLight(pointLights[i], norm, viewDir, FragPos);
+    }
+
+    // Calculate Directional Lights
+    for (int i = 0; i < numDirLights; ++i)
+    {
+        result += CalcDirLight(dirLights[i], norm, viewDir);
+    }
+
+    // Calculate Spotlights
+    for (int i = 0; i < numSpotLights; ++i)
+    {
+        result += CalcSpotLight(spotLights[i], norm, viewDir, FragPos);
+    }
+
+    // Combine lighting with object color or texture
+    vec3 baseColor = useTexture ? texture(texture1, TexCoords).rgb : objectColor;
+    color = vec4(result * baseColor, 1.0);
+}

shaders/gizmo_fragment_shader.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 color;
+
+uniform vec3 gizmoColor;
+
+void main()
+{
+    color = vec4(gizmoColor, 1.0);
+}

shaders/gizmo_vertex_shader.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+layout(location = 0) in vec3 position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(position, 1.0);
+}

shaders/vertex_shader.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout(location = 0) in vec3 position;
+layout(location = 1) in vec3 normal;
+layout(location = 2) in vec2 texCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    TexCoords = texCoords; // Pass texture coordinates to fragment shader
+    FragPos = vec3(model * vec4(position, 1.0));
+    Normal = mat3(transpose(inverse(model))) * normal;
+    gl_Position = projection * view * vec4(FragPos, 1.0);
+}

src/CameraComponent.h

@@ -0,0 +1,109 @@
+// CameraComponent.h
+
+#pragma once
+
+#include <string>
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+#include "Component.h"
+#include <yaml-cpp/yaml.h>
+
+// Enumeration for Projection Types (Optional)
+enum class ProjectionType {
+    Perspective = 0,
+    Orthographic = 1
+};
+
+struct CameraComponent : public Component {
+    // Camera Attributes
+    float zoom;          // Applicable for Orthographic Projection
+    float fov;           // Field of View in degrees for Perspective Projection
+    bool orthographic;   // Toggle between Orthographic and Perspective
+    float nearPlane;
+    float farPlane;
+
+    // Constructor with default values
+    CameraComponent()
+        : zoom(10.0f),
+          fov(45.0f),
+          orthographic(false),
+          nearPlane(0.1f),
+          farPlane(1000.0f)
+    {}
+
+    // Override to provide the component's name
+    virtual const std::string& GetName() const override {
+        static std::string name = "Camera";
+        return name;
+    }
+
+    // Static method to retrieve the component's name
+    static std::string GetStaticName() {
+        return "Camera";
+    }
+
+    // Computes the view matrix based on position and rotation from TransformComponent
+    glm::mat4 GetViewMatrix(const glm::vec3& position, float rotation) const {
+        glm::mat4 view = glm::mat4(1.0f);
+        // Apply translation and rotation inversely to simulate camera movement
+        view = glm::translate(view, -position);
+        view = glm::rotate(view, glm::radians(-rotation), glm::vec3(0, 0, 1));
+        return view;
+    }
+
+    // Computes the projection matrix based on the current projection type and aspect ratio
+    glm::mat4 GetProjectionMatrix(float aspectRatio) const {
+        if (orthographic) {
+            float halfWidth = zoom / 2.0f;
+            float halfHeight = halfWidth / aspectRatio;
+            return glm::ortho(-halfWidth, halfWidth, -halfHeight, halfHeight, nearPlane, farPlane);
+        } else {
+            return glm::perspective(glm::radians(fov), aspectRatio, nearPlane, farPlane);
+        }
+    }
+
+    // Serialization Method
+    virtual YAML::Node Serialize() override {
+        YAML::Node node;
+
+        // Zoom
+        node["Zoom"] = zoom;
+
+        // Field of View
+        node["FOV"] = fov;
+
+        // Orthographic Projection Toggle
+        node["Orthographic"] = orthographic;
+
+        // Near Plane
+        node["NearPlane"] = nearPlane;
+
+        // Far Plane
+        node["FarPlane"] = farPlane;
+
+        return node;
+    }
+
+    // Deserialization Method
+    virtual void Deserialize(const YAML::Node& node) override {
+        if (node["Zoom"]) {
+            zoom = node["Zoom"].as<float>();
+        }
+
+        if (node["FOV"]) {
+            fov = node["FOV"].as<float>();
+        }
+
+        if (node["Orthographic"]) {
+            orthographic = node["Orthographic"].as<bool>();
+        }
+
+        if (node["NearPlane"]) {
+            nearPlane = node["NearPlane"].as<float>();
+        }
+
+        if (node["FarPlane"]) {
+            farPlane = node["FarPlane"].as<float>();
+        }
+    }
+};

src/CollisionShape3DComponent.cpp

@@ -0,0 +1,223 @@
+// CollisionShape3DComponent.cpp
+#include "CollisionShape3DComponent.h"
+#include <iostream>
+#include <vector>
+
+// Define the static name
+const std::string CollisionShape3DComponent::name = "CollisionShape";
+
+// ============================================================
+// Constructors
+// ============================================================
+
+// Default Constructor
+CollisionShape3DComponent::CollisionShape3DComponent()
+    : shapeType(CollisionShapeType::Box),
+      size(1.0f, 1.0f, 1.0f),
+      radius(1.0f),
+      direction(0.0f, 1.0f, 0.0f),
+      height(2.0f)
+{
+}
+
+// Parameterized Constructor
+CollisionShape3DComponent::CollisionShape3DComponent(CollisionShapeType type, const glm::vec3& sz, float rad, const glm::vec3& dir, float ht)
+    : shapeType(type),
+      size(sz),
+      radius(rad),
+      direction(dir),
+      height(ht)
+{
+}
+
+// ============================================================
+// GetName Methods
+// ============================================================
+
+// Returns the name of the component
+const std::string& CollisionShape3DComponent::GetName() const
+{
+    return GetStaticName();
+}
+
+// Returns the static name of the component
+const std::string& CollisionShape3DComponent::GetStaticName()
+{
+    return name;
+}
+
+// ============================================================
+// Serialization Methods
+// ============================================================
+
+// Serialize the component to YAML
+YAML::Node CollisionShape3DComponent::Serialize()
+{
+    YAML::Node node;
+    node["ShapeType"] = static_cast<int>(shapeType);
+
+    switch (shapeType)
+    {
+        case CollisionShapeType::Box:
+        {
+            YAML::Node SizeNode;
+            SizeNode.SetStyle(YAML::EmitterStyle::Flow);
+            SizeNode.push_back(size.x);
+            SizeNode.push_back(size.y);
+            SizeNode.push_back(size.z);
+            node["Size"] = SizeNode;
+            break;
+        }
+        case CollisionShapeType::Sphere:
+            node["Radius"] = radius;
+            break;
+        case CollisionShapeType::Capsule:
+        {
+            YAML::Node DirNode;
+            DirNode.SetStyle(YAML::EmitterStyle::Flow);
+            DirNode.push_back(direction.x);
+            DirNode.push_back(direction.y);
+            DirNode.push_back(direction.z);
+            node["Direction"] = DirNode;
+            node["Height"] = height;
+            break;
+        }
+        default:
+            std::cerr << "Warning: Unknown CollisionShapeType during serialization.\n";
+            break;
+    }
+
+    return node;
+}
+
+// Deserialize the component from YAML
+void CollisionShape3DComponent::Deserialize(const YAML::Node& node)
+{
+    // Deserialize ShapeType
+    if (node["ShapeType"])
+    {
+        try
+        {
+            int typeInt = node["ShapeType"].as<int>();
+            if (typeInt >= 0 && typeInt <= 2) // Assuming enum values 0,1,2
+            {
+                shapeType = static_cast<CollisionShapeType>(typeInt);
+            }
+            else
+            {
+                std::cerr << "Warning: 'ShapeType' has an invalid value (" << typeInt << "). Using default (Box).\n";
+                shapeType = CollisionShapeType::Box;
+            }
+        }
+        catch (const YAML::Exception& e)
+        {
+            std::cerr << "Error deserializing 'ShapeType': " << e.what() << "\nUsing default (Box).\n";
+            shapeType = CollisionShapeType::Box;
+        }
+    }
+    else
+    {
+        std::cerr << "Warning: 'ShapeType' node not found. Using default (Box).\n";
+        shapeType = CollisionShapeType::Box;
+    }
+
+    // Deserialize based on ShapeType
+    switch (shapeType)
+    {
+        case CollisionShapeType::Box:
+        {
+            if (node["Size"])
+            {
+                try
+                {
+                    auto sz = node["Size"].as<std::vector<float>>();
+                    if (sz.size() == 3)
+                        size = glm::vec3(sz[0], sz[1], sz[2]);
+                    else
+                        std::cerr << "Warning: 'Size' does not have exactly 3 elements. Using default size.\n";
+                }
+                catch (const YAML::Exception& e)
+                {
+                    std::cerr << "Error deserializing 'Size': " << e.what() << "\nUsing default size.\n";
+                    size = glm::vec3(1.0f, 1.0f, 1.0f);
+                }
+            }
+            else
+            {
+                std::cerr << "Warning: 'Size' node not found for Box. Using default size.\n";
+                size = glm::vec3(1.0f, 1.0f, 1.0f);
+            }
+            break;
+        }
+
+        case CollisionShapeType::Sphere:
+            if (node["Radius"])
+            {
+                try
+                {
+                    radius = node["Radius"].as<float>();
+                }
+                catch (const YAML::Exception& e)
+                {
+                    std::cerr << "Error deserializing 'Radius': " << e.what() << "\nUsing default radius.\n";
+                    radius = 1.0f;
+                }
+            }
+            else
+            {
+                std::cerr << "Warning: 'Radius' node not found for Sphere. Using default radius.\n";
+                radius = 1.0f;
+            }
+            break;
+
+        case CollisionShapeType::Capsule:
+        {
+            if (node["Direction"])
+            {
+                try
+                {
+                    auto dir = node["Direction"].as<std::vector<float>>();
+                    if (dir.size() == 3)
+                        direction = glm::vec3(dir[0], dir[1], dir[2]);
+                    else
+                        std::cerr << "Warning: 'Direction' does not have exactly 3 elements. Using default direction.\n";
+                }
+                catch (const YAML::Exception& e)
+                {
+                    std::cerr << "Error deserializing 'Direction': " << e.what() << "\nUsing default direction.\n";
+                    direction = glm::vec3(0.0f, 1.0f, 0.0f);
+                }
+            }
+            else
+            {
+                std::cerr << "Warning: 'Direction' node not found for Capsule. Using default direction.\n";
+                direction = glm::vec3(0.0f, 1.0f, 0.0f);
+            }
+
+            if (node["Height"])
+            {
+                try
+                {
+                    height = node["Height"].as<float>();
+                }
+                catch (const YAML::Exception& e)
+                {
+                    std::cerr << "Error deserializing 'Height': " << e.what() << "\nUsing default height.\n";
+                    height = 2.0f;
+                }
+            }
+            else
+            {
+                std::cerr << "Warning: 'Height' node not found for Capsule. Using default height.\n";
+                height = 2.0f;
+            }
+            break;
+        }
+
+        // Add deserialization for additional shapes here
+
+        default:
+            std::cerr << "Warning: Unknown CollisionShapeType during deserialization.\n";
+            break;
+    }
+}

src/CollisionShape3DComponent.h

@@ -0,0 +1,44 @@
+// CollisionShape3DComponent.h
+#ifndef COLLISIONSHAPE3DCOMPONENT_H
+#define COLLISIONSHAPE3DCOMPONENT_H
+
+#include "Component.h"
+#include <glm/glm.hpp>
+#include <yaml-cpp/yaml.h>
+#include <string>
+
+// Enum for different collision shapes
+enum class CollisionShapeType {
+    Box,
+    Sphere,
+    Capsule,
+    // Add more shapes as needed
+};
+
+class CollisionShape3DComponent : public Component
+{
+public:
+    // Collision Shape Properties
+    CollisionShapeType shapeType;
+    glm::vec3 size;      // For Box: width, height, depth
+    float radius;        // For Sphere: radius
+    glm::vec3 direction; // For Capsule: direction vector
+    float height;        // For Capsule: height
+
+    // Constructors
+    CollisionShape3DComponent();
+    CollisionShape3DComponent(CollisionShapeType type, const glm::vec3& sz = glm::vec3(1.0f), float rad = 1.0f, const glm::vec3& dir = glm::vec3(0.0f, 1.0f, 0.0f), float ht = 2.0f);
+
+    // Override Component methods
+    virtual const std::string& GetName() const override;
+    static const std::string& GetStaticName();
+
+    // Serialization methods
+    virtual YAML::Node Serialize() override;
+    virtual void Deserialize(const YAML::Node& node) override;
+
+private:
+    static const std::string name;
+};
+
+#endif // COLLISIONSHAPE3DCOMPONENT_H

src/Component.h

@@ -0,0 +1,19 @@
+// Component.h
+#ifndef COMPONENT_H
+#define COMPONENT_H
+
+#include <string>
+#include <yaml-cpp/yaml.h>
+
+class Component
+{
+public:
+    virtual ~Component() {}
+    virtual const std::string& GetName() const = 0;
+
+    // Serialization methods
+    virtual YAML::Node Serialize() = 0;
+    virtual void Deserialize(const YAML::Node& node) = 0;
+};
+
+#endif // COMPONENT_H

src/EditorCamera.cpp

@@ -0,0 +1,107 @@
+// EditorCamera.cpp
+
+#include "EditorCamera.h"
+#include <glm/gtx/rotate_vector.hpp>
+#include <iostream>
+
+EditorCamera::EditorCamera(glm::vec3 target, float distance, float yaw, float pitch)
+    : target(target), distance(distance), yaw(yaw), pitch(pitch), positionDirty(true)
+{
+    // Initialize the camera position based on the initial yaw, pitch, and distance
+    UpdateCameraPosition();
+}
+
+void EditorCamera::ProcessMouseMovement(float deltaX, float deltaY)
+{
+    float sensitivity = 0.1f; // Adjust sensitivity as needed
+    yaw += deltaX * sensitivity;
+    pitch += deltaY * sensitivity;
+
+    // Clamp the pitch to prevent flipping
+    if (pitch > maxPitch)
+        pitch = maxPitch;
+    if (pitch < minPitch)
+        pitch = minPitch;
+
+    positionDirty = true;
+}
+
+void EditorCamera::ProcessMouseScroll(float deltaScroll)
+{
+    float zoomSensitivity = 1.0f; // Adjust zoom sensitivity as needed
+    distance -= deltaScroll * zoomSensitivity;
+
+    // Clamp the distance to prevent the camera from getting too close or too far
+    if (distance < minDistance)
+        distance = minDistance;
+    if (distance > maxDistance)
+        distance = maxDistance;
+
+    positionDirty = true;
+}
+
+glm::mat4 EditorCamera::GetViewMatrix() const
+{
+    if (positionDirty)
+        const_cast<EditorCamera *>(this)->UpdateCameraPosition();
+
+    return glm::lookAt(position, target, glm::vec3(0.0f, 1.0f, 0.0f));
+}
+
+glm::mat4 EditorCamera::GetProjectionMatrix(float aspectRatio) const
+{
+    return glm::perspective(glm::radians(45.0f), aspectRatio, 0.1f, 100.0f);
+}
+
+glm::vec3 EditorCamera::GetPosition() const
+{
+    if (positionDirty)
+        const_cast<EditorCamera *>(this)->UpdateCameraPosition();
+    return position;
+}
+
+void EditorCamera::SetTarget(const glm::vec3 &newTarget)
+{
+    target = newTarget;
+    positionDirty = true;
+}
+
+glm::vec3 EditorCamera::GetTarget() const
+{
+    return target;
+}
+
+void EditorCamera::UpdateCameraPosition()
+{
+    // Convert angles from degrees to radians
+    float yawRad = glm::radians(yaw);
+    float pitchRad = glm::radians(pitch);
+
+    // Calculate the camera's position in spherical coordinates
+    float x = distance * cos(pitchRad) * sin(yawRad);
+    float y = distance * sin(pitchRad);
+    float z = distance * cos(pitchRad) * cos(yawRad);
+
+    // Update the camera's position relative to the target
+    position = target + glm::vec3(x, y, z);
+    positionDirty = false;
+}
+
+void EditorCamera::SetYaw(float newYaw)
+{
+    yaw = newYaw;
+    positionDirty = true;
+}
+
+void EditorCamera::SetPitch(float newPitch)
+{
+    // Clamp the pitch to prevent flipping
+    if (newPitch > maxPitch)
+        pitch = maxPitch;
+    else if (newPitch < minPitch)
+        pitch = minPitch;
+    else
+        pitch = newPitch;
+
+    positionDirty = true;
+}

src/EditorCamera.h

@@ -0,0 +1,62 @@
+// EditorCamera.h
+
+#pragma once
+
+#define GLM_ENABLE_EXPERIMENTAL
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+
+class EditorCamera
+{
+public:
+    EditorCamera(
+        glm::vec3 target = glm::vec3(0.0f),
+        float distance = 10.0f,
+        float yaw = 45.0f,    // Horizontal angle in degrees
+        float pitch = 30.0f   // Vertical angle in degrees
+    );
+
+    // Processes input received from a mouse input system. Expects the offset value in both the x and y direction.
+    void ProcessMouseMovement(float deltaX, float deltaY);
+
+    // Processes input received from a mouse scroll-wheel event. Only requires input on the vertical wheel-axis
+    void ProcessMouseScroll(float deltaScroll);
+
+    // Returns the view matrix calculated using Euler Angles and the LookAt Matrix
+    glm::mat4 GetViewMatrix() const;
+
+    // Returns the projection matrix
+    glm::mat4 GetProjectionMatrix(float aspectRatio) const;
+
+    // Returns the current position of the camera
+    glm::vec3 GetPosition() const;
+
+    // Sets a new target for the camera to orbit around
+    void SetTarget(const glm::vec3& newTarget);
+
+    // Gets the current target
+    glm::vec3 GetTarget() const;
+    
+    void SetYaw(float newYaw);
+    void SetPitch(float newPitch);
+
+private:
+    // Updates the camera's position based on spherical coordinates
+    void UpdateCameraPosition();
+
+    // Camera Attributes
+    glm::vec3 target;    // The point the camera is looking at
+    float distance;      // Distance from the target
+    float yaw;           // Horizontal angle in degrees
+    float pitch;         // Vertical angle in degrees
+
+    // Constraints
+    const float minPitch = -89.0f;
+    const float maxPitch = 89.0f;
+    const float minDistance = 1.0f;
+    const float maxDistance = 100.0f;
+
+    // Cached camera position and flag to check if it needs updating
+    mutable glm::vec3 position;
+    mutable bool positionDirty;
+};

src/Entity.cpp

@@ -0,0 +1,100 @@
+// Entity.cpp
+#include "Entity.h"
+#include "TransformComponent.h"
+#include "RenderComponent.h"
+#include "LightComponent.h"
+#include "RigidBody3DComponent.h"
+#include "CollisionShape3DComponent.h"
+#include "CameraComponent.h"
+
+Entity::Entity(int id, const std::string& name)
+    : id(id), name(name)
+{
+}
+
+
+
+void Entity::AddComponent(const std::shared_ptr<Component>& component)
+{
+    components[component->GetName()] = component;
+}
+
+YAML::Node Entity::Serialize()
+{
+    YAML::Node node;
+    node["ID"] = id;
+    node["Name"] = name;
+
+    YAML::Node componentsNode;
+    for (const auto& compPair : components)
+    {
+        const std::string& compName = compPair.first;
+        std::shared_ptr<Component> component = compPair.second;
+        componentsNode[compName] = component->Serialize();
+    }
+
+    node["Components"] = componentsNode;
+    return node;
+}
+
+void Entity::Deserialize(const YAML::Node& node)
+{
+    if (node["ID"])
+    {
+        id = node["ID"].as<int>();
+    }
+    if (node["Name"])
+    {
+        name = node["Name"].as<std::string>();
+    }
+    if (node["Components"])
+    {
+        YAML::Node componentsNode = node["Components"];
+        for (auto it = componentsNode.begin(); it != componentsNode.end(); ++it)
+        {
+            std::string compName = it->first.as<std::string>();
+            YAML::Node compNode = it->second;
+
+            if (compName == TransformComponent::GetStaticName())
+            {
+                auto transform = std::make_shared<TransformComponent>();
+                transform->Deserialize(compNode);
+                AddComponent(transform);
+            }
+            else if (compName == RenderComponent::GetStaticName())
+            {
+                auto render = std::make_shared<RenderComponent>();
+                render->Deserialize(compNode);
+                AddComponent(render);
+            }
+            else if (compName == LightComponent::GetStaticName())
+            {
+                auto lightComponent = std::make_shared<LightComponent>();
+                lightComponent->Deserialize(compNode);
+                AddComponent(lightComponent);
+            }
+            else if (compName == RigidBody3DComponent::GetStaticName())
+            {
+                auto ridgid = std::make_shared<RigidBody3DComponent>();
+                ridgid->Deserialize(compNode);
+                AddComponent(ridgid);
+            }
+            else if (compName == CollisionShape3DComponent::GetStaticName())
+            {
+                auto collis = std::make_shared<CollisionShape3DComponent>();
+                collis->Deserialize(compNode);
+                AddComponent(collis);
+            }
+            else if (compName == CameraComponent::GetStaticName())
+            {
+                auto cammera = std::make_shared<CameraComponent>();
+                cammera->Deserialize(compNode);
+                AddComponent(cammera);
+            } else {
+                std::cout << "[Poly] [De/Serialize] [ERROR] Invalid Component Type '"<< compName <<"' Skipping" << std::endl;
+                
+            }
+            // Add deserialization for other components as needed
+        }
+    }
+}

src/Entity.h

@@ -0,0 +1,39 @@
+// Entity.h
+#ifndef ENTITY_H
+#define ENTITY_H
+
+#include <string>
+#include <unordered_map>
+#include <memory>
+#include <yaml-cpp/yaml.h>
+
+#include "Component.h"
+
+class Entity
+{
+public:
+    int id;
+    std::string name;
+    std::unordered_map<std::string, std::shared_ptr<Component>> components;
+
+    Entity(int id, const std::string& name);
+    
+    void AddComponent(const std::shared_ptr<Component>& component);
+
+    template <typename T>
+    std::shared_ptr<T> GetComponent()
+    {
+        auto it = components.find(T::GetStaticName());
+        if (it != components.end())
+        {
+            return std::dynamic_pointer_cast<T>(it->second);
+        }
+        return nullptr;
+    }
+
+    // Serialization methods
+    YAML::Node Serialize();
+    void Deserialize(const YAML::Node& node);
+};
+
+#endif // ENTITY_H

src/ImGuiStyle.cpp

@@ -0,0 +1,93 @@
+#include "ImGuiStyle.h"
+#include "imgui.h"
+
+void SetupImGuiStyle()
+{
+	// Windark style by DestroyerDarkNess from ImThemes
+	ImGuiStyle& style = ImGui::GetStyle();
+	
+	style.Alpha = 1.0f;
+	style.DisabledAlpha = 0.6000000238418579f;
+	style.WindowPadding = ImVec2(8.0f, 8.0f);
+	style.WindowRounding = 8.399999618530273f;
+	style.WindowBorderSize = 1.0f;
+	style.WindowMinSize = ImVec2(32.0f, 32.0f);
+	style.WindowTitleAlign = ImVec2(0.0f, 0.5f);
+	style.WindowMenuButtonPosition = ImGuiDir_Right;
+	style.ChildRounding = 3.0f;
+	style.ChildBorderSize = 1.0f;
+	style.PopupRounding = 3.0f;
+	style.PopupBorderSize = 1.0f;
+	style.FramePadding = ImVec2(4.0f, 3.0f);
+	style.FrameRounding = 3.0f;
+	style.FrameBorderSize = 1.0f;
+	style.ItemSpacing = ImVec2(8.0f, 4.0f);
+	style.ItemInnerSpacing = ImVec2(4.0f, 4.0f);
+	style.CellPadding = ImVec2(4.0f, 2.0f);
+	style.IndentSpacing = 21.0f;
+	style.ColumnsMinSpacing = 6.0f;
+	style.ScrollbarSize = 5.599999904632568f;
+	style.ScrollbarRounding = 18.0f;
+	style.GrabMinSize = 10.0f;
+	style.GrabRounding = 3.0f;
+	style.TabRounding = 3.0f;
+	style.TabBorderSize = 0.0f;
+	style.TabMinWidthForCloseButton = 0.0f;
+	style.ColorButtonPosition = ImGuiDir_Right;
+	style.ButtonTextAlign = ImVec2(0.5f, 0.5f);
+	style.SelectableTextAlign = ImVec2(0.0f, 0.0f);
+	
+	style.Colors[ImGuiCol_Text] = ImVec4(1.0f, 1.0f, 1.0f, 1.0f);
+	style.Colors[ImGuiCol_TextDisabled] = ImVec4(0.6000000238418579f, 0.6000000238418579f, 0.6000000238418579f, 1.0f);
+	style.Colors[ImGuiCol_WindowBg] = ImVec4(0.125490203499794f, 0.125490203499794f, 0.125490203499794f, 1.0f);
+	style.Colors[ImGuiCol_ChildBg] = ImVec4(0.125490203499794f, 0.125490203499794f, 0.125490203499794f, 1.0f);
+	style.Colors[ImGuiCol_PopupBg] = ImVec4(0.168627455830574f, 0.168627455830574f, 0.168627455830574f, 1.0f);
+	style.Colors[ImGuiCol_Border] = ImVec4(0.250980406999588f, 0.250980406999588f, 0.250980406999588f, 1.0f);
+	style.Colors[ImGuiCol_BorderShadow] = ImVec4(0.0f, 0.0f, 0.0f, 0.0f);
+	style.Colors[ImGuiCol_FrameBg] = ImVec4(0.168627455830574f, 0.168627455830574f, 0.168627455830574f, 1.0f);
+	style.Colors[ImGuiCol_FrameBgHovered] = ImVec4(0.2156862765550613f, 0.2156862765550613f, 0.2156862765550613f, 1.0f);
+	style.Colors[ImGuiCol_FrameBgActive] = ImVec4(0.250980406999588f, 0.250980406999588f, 0.250980406999588f, 1.0f);
+	style.Colors[ImGuiCol_TitleBg] = ImVec4(0.125490203499794f, 0.125490203499794f, 0.125490203499794f, 1.0f);
+	style.Colors[ImGuiCol_TitleBgActive] = ImVec4(0.168627455830574f, 0.168627455830574f, 0.168627455830574f, 1.0f);
+	style.Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.125490203499794f, 0.125490203499794f, 0.125490203499794f, 1.0f);
+	style.Colors[ImGuiCol_MenuBarBg] = ImVec4(0.168627455830574f, 0.168627455830574f, 0.168627455830574f, 1.0f);
+	style.Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.125490203499794f, 0.125490203499794f, 0.125490203499794f, 1.0f);
+	style.Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.250980406999588f, 0.250980406999588f, 0.250980406999588f, 1.0f);
+	style.Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.3019607961177826f, 0.3019607961177826f, 0.3019607961177826f, 1.0f);
+	style.Colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.3490196168422699f, 0.3490196168422699f, 0.3490196168422699f, 1.0f);
+	style.Colors[ImGuiCol_CheckMark] = ImVec4(0.0f, 0.4705882370471954f, 0.843137264251709f, 1.0f);
+	style.Colors[ImGuiCol_SliderGrab] = ImVec4(0.0f, 0.4705882370471954f, 0.843137264251709f, 1.0f);
+	style.Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.0f, 0.3294117748737335f, 0.6000000238418579f, 1.0f);
+	style.Colors[ImGuiCol_Button] = ImVec4(0.168627455830574f, 0.168627455830574f, 0.168627455830574f, 1.0f);
+	style.Colors[ImGuiCol_ButtonHovered] = ImVec4(0.2156862765550613f, 0.2156862765550613f, 0.2156862765550613f, 1.0f);
+	style.Colors[ImGuiCol_ButtonActive] = ImVec4(0.250980406999588f, 0.250980406999588f, 0.250980406999588f, 1.0f);
+	style.Colors[ImGuiCol_Header] = ImVec4(0.2156862765550613f, 0.2156862765550613f, 0.2156862765550613f, 1.0f);
+	style.Colors[ImGuiCol_HeaderHovered] = ImVec4(0.250980406999588f, 0.250980406999588f, 0.250980406999588f, 1.0f);
+	style.Colors[ImGuiCol_HeaderActive] = ImVec4(0.3019607961177826f, 0.3019607961177826f, 0.3019607961177826f, 1.0f);
+	style.Colors[ImGuiCol_Separator] = ImVec4(0.2156862765550613f, 0.2156862765550613f, 0.2156862765550613f, 1.0f);
+	style.Colors[ImGuiCol_SeparatorHovered] = ImVec4(0.250980406999588f, 0.250980406999588f, 0.250980406999588f, 1.0f);
+	style.Colors[ImGuiCol_SeparatorActive] = ImVec4(0.3019607961177826f, 0.3019607961177826f, 0.3019607961177826f, 1.0f);
+	style.Colors[ImGuiCol_ResizeGrip] = ImVec4(0.2156862765550613f, 0.2156862765550613f, 0.2156862765550613f, 1.0f);
+	style.Colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.250980406999588f, 0.250980406999588f, 0.250980406999588f, 1.0f);
+	style.Colors[ImGuiCol_ResizeGripActive] = ImVec4(0.3019607961177826f, 0.3019607961177826f, 0.3019607961177826f, 1.0f);
+	style.Colors[ImGuiCol_Tab] = ImVec4(0.168627455830574f, 0.168627455830574f, 0.168627455830574f, 1.0f);
+	style.Colors[ImGuiCol_TabHovered] = ImVec4(0.2156862765550613f, 0.2156862765550613f, 0.2156862765550613f, 1.0f);
+	style.Colors[ImGuiCol_TabActive] = ImVec4(0.250980406999588f, 0.250980406999588f, 0.250980406999588f, 1.0f);
+	style.Colors[ImGuiCol_TabUnfocused] = ImVec4(0.168627455830574f, 0.168627455830574f, 0.168627455830574f, 1.0f);
+	style.Colors[ImGuiCol_TabUnfocusedActive] = ImVec4(0.2156862765550613f, 0.2156862765550613f, 0.2156862765550613f, 1.0f);
+	style.Colors[ImGuiCol_PlotLines] = ImVec4(0.0f, 0.4705882370471954f, 0.843137264251709f, 1.0f);
+	style.Colors[ImGuiCol_PlotLinesHovered] = ImVec4(0.0f, 0.3294117748737335f, 0.6000000238418579f, 1.0f);
+	style.Colors[ImGuiCol_PlotHistogram] = ImVec4(0.0f, 0.4705882370471954f, 0.843137264251709f, 1.0f);
+	style.Colors[ImGuiCol_PlotHistogramHovered] = ImVec4(0.0f, 0.3294117748737335f, 0.6000000238418579f, 1.0f);
+	style.Colors[ImGuiCol_TableHeaderBg] = ImVec4(0.1882352977991104f, 0.1882352977991104f, 0.2000000029802322f, 1.0f);
+	style.Colors[ImGuiCol_TableBorderStrong] = ImVec4(0.3098039329051971f, 0.3098039329051971f, 0.3490196168422699f, 1.0f);
+	style.Colors[ImGuiCol_TableBorderLight] = ImVec4(0.2274509817361832f, 0.2274509817361832f, 0.2470588237047195f, 1.0f);
+	style.Colors[ImGuiCol_TableRowBg] = ImVec4(0.0f, 0.0f, 0.0f, 0.0f);
+	style.Colors[ImGuiCol_TableRowBgAlt] = ImVec4(1.0f, 1.0f, 1.0f, 0.05999999865889549f);
+	style.Colors[ImGuiCol_TextSelectedBg] = ImVec4(0.0f, 0.4705882370471954f, 0.843137264251709f, 1.0f);
+	style.Colors[ImGuiCol_DragDropTarget] = ImVec4(1.0f, 1.0f, 0.0f, 0.8999999761581421f);
+	style.Colors[ImGuiCol_NavHighlight] = ImVec4(0.2588235437870026f, 0.5882353186607361f, 0.9764705896377563f, 1.0f);
+	style.Colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.0f, 1.0f, 1.0f, 0.699999988079071f);
+	style.Colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.800000011920929f, 0.800000011920929f, 0.800000011920929f, 0.2000000029802322f);
+	style.Colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.800000011920929f, 0.800000011920929f, 0.800000011920929f, 0.3499999940395355f);
+}

src/ImGuiStyle.h

@@ -0,0 +1,9 @@
+// ImGuiStyle.h
+
+#ifndef IMGUISTYLE_H
+#define IMGUISTYLE_H
+
+void SetupImGuiStyle();
+
+
+#endif // IMGUISTYLE_H

src/LightComponent.cpp

@@ -0,0 +1,106 @@
+// LightComponent.cpp
+#include "LightComponent.h"
+
+const std::string LightComponent::name = "Light";
+
+LightComponent::LightComponent()
+    : type(LightType::Point),
+      color(1.0f, 1.0f, 1.0f),             // Default color
+      direction(-0.2f, -1.0f, -0.3f),      // Default direction
+      intensity(1.0f),
+      constant(1.0f),
+      linear(0.09f),
+      quadratic(0.032f),
+      cutOff(12.5f),                        // Reasonable default for spotlight
+      outerCutOff(17.5f)                    // Slightly larger than cutOff for smooth transition
+{
+}
+
+const std::string &LightComponent::GetName() const
+{
+    return name;
+}
+
+const std::string &LightComponent::GetStaticName()
+{
+    return name;
+}
+
+YAML::Node LightComponent::Serialize()
+{
+    YAML::Node node;
+    node["Type"] = static_cast<int>(type);
+    node["Intensity"] = intensity;
+
+    // Serialize Color
+    YAML::Node colorNode;
+    colorNode.push_back(color.r);
+    colorNode.push_back(color.g);
+    colorNode.push_back(color.b);
+    colorNode.SetStyle(YAML::EmitterStyle::Flow);
+    node["Color"] = colorNode;
+
+    // Serialize Attenuation
+    node["Constant"] = constant;
+    node["Linear"] = linear;
+    node["Quadratic"] = quadratic;
+
+    // Serialize Cutoff Angles
+    node["cutOff"] = cutOff;
+    node["outerCutOff"] = outerCutOff;
+
+    // Serialize Direction
+    YAML::Node directionNode;
+    directionNode.push_back(direction.x);
+    directionNode.push_back(direction.y);
+    directionNode.push_back(direction.z);
+    directionNode.SetStyle(YAML::EmitterStyle::Flow);
+    node["Direction"] = directionNode;
+
+    return node;
+}
+
+
+void LightComponent::Deserialize(const YAML::Node &node)
+{
+    if (node["Type"])
+    {
+        type = static_cast<LightType>(node["Type"].as<int>());
+    }
+    if (node["Intensity"])
+    {
+        intensity = node["Intensity"].as<float>();
+    }
+    if (node["Color"])
+    {
+        auto clr = node["Color"].as<std::vector<float>>();
+        if (clr.size() == 3)
+            color = glm::vec3(clr[0], clr[1], clr[2]);
+    }
+    if (node["Constant"])
+    {
+        constant = node["Constant"].as<float>();
+    }
+    if (node["cutOff"])
+    {
+        cutOff = node["cutOff"].as<float>();
+    }
+    if (node["outerCutOff"])
+    {
+        outerCutOff = node["outerCutOff"].as<float>();
+    }
+    if (node["Linear"])
+    {
+        linear = node["Linear"].as<float>();
+    }
+    if (node["Quadratic"])
+    {
+        quadratic = node["Quadratic"].as<float>();
+    }
+    if (node["Direction"])
+    {
+        auto dir = node["Direction"].as<std::vector<float>>();
+        if (dir.size() == 3)
+            direction = glm::vec3(dir[0], dir[1], dir[2]);
+    }
+}

src/LightComponent.h

@@ -0,0 +1,48 @@
+// LightComponent.h
+#ifndef LIGHT_COMPONENT_H
+#define LIGHT_COMPONENT_H
+
+#include "Component.h"
+#include <glm/glm.hpp>
+#include <yaml-cpp/yaml.h>
+#include <iostream>
+
+enum class LightType
+{
+    Point,
+    Directional,
+    Spot
+};
+
+class LightComponent : public Component
+{
+public:
+    LightType type;
+    glm::vec3 color;
+    float intensity;
+
+    // Point light properties
+    float constant;
+    float linear;
+    float quadratic;
+    
+
+    // Directional light properties
+    glm::vec3 direction;
+    // Cutoff angles (for Spot Lights, in radians)
+    float cutOff;
+    float outerCutOff;
+
+    LightComponent();
+    virtual const std::string& GetName() const override;
+    static const std::string& GetStaticName();
+
+    // Serialization methods
+    virtual YAML::Node Serialize() override;
+    virtual void Deserialize(const YAML::Node& node) override;
+
+private:
+    static const std::string name;
+};
+
+#endif // LIGHT_COMPONENT_H

src/LogSystem.cpp

@@ -0,0 +1,81 @@
+// LogSystem.cpp
+#include "LogSystem.h"
+#include <chrono>
+#include <ctime>
+#include <sstream>
+#include <iomanip>
+#include <imgui.h>
+
+// Initialize global log buffer and mutex
+std::vector<std::string> g_LogBuffer;
+std::mutex g_LogMutex;
+
+// Helper function to get current timestamp as string
+std::string GetCurrentTimestamp() {
+    auto now = std::chrono::system_clock::now();
+    auto now_time_t = std::chrono::system_clock::to_time_t(now);
+    auto now_ms = std::chrono::duration_cast<std::chrono::milliseconds>(
+                      now.time_since_epoch()) %
+                  1000;
+
+    std::tm tm_time;
+#if defined(_WIN32) || defined(_WIN64)
+    localtime_s(&tm_time, &now_time_t);
+#else
+    localtime_r(&now_time_t, &tm_time);
+#endif
+
+    std::ostringstream oss;
+    oss << std::put_time(&tm_time, "%H:%M:%S") << "."
+        << std::setfill('0') << std::setw(3) << now_ms.count();
+    return oss.str();
+}
+
+// Function to add a new log message with timestamp
+void AddLogMessage(const std::string& message) {
+    std::lock_guard<std::mutex> lock(g_LogMutex);
+
+    // Create the log entry with timestamp
+    std::string logEntry = "[Poly] [" +GetCurrentTimestamp() + "] " + message;
+    g_LogBuffer.emplace_back(logEntry);
+
+    // Ensure the log buffer doesn't exceed the maximum size
+    if (g_LogBuffer.size() > MAX_LOG_MESSAGES) {
+        g_LogBuffer.erase(g_LogBuffer.begin(),
+                          g_LogBuffer.begin() + (g_LogBuffer.size() - MAX_LOG_MESSAGES));
+    }
+}
+
+// Function to draw the log terminal
+void DrawLogTerminal(const char* title, bool* p_open) {
+    ImGui::Begin(title, p_open);
+
+    // Top Bar: Clear Button and Auto-Scroll Checkbox
+    if (ImGui::Button("Clear")) {
+        std::lock_guard<std::mutex> lock(g_LogMutex);
+        g_LogBuffer.clear();
+    }
+    ImGui::SameLine();
+    static bool autoScroll = true;
+    ImGui::Checkbox("Auto-scroll", &autoScroll);
+    ImGui::Separator();
+
+    // Child region for scrolling
+    ImGui::BeginChild("ScrollingRegion", ImVec2(0, 0), false, ImGuiWindowFlags_HorizontalScrollbar);
+
+    // Lock the mutex to safely access the log buffer
+    {
+        std::lock_guard<std::mutex> lock(g_LogMutex);
+        for (const auto& log : g_LogBuffer) {
+            ImGui::TextUnformatted(log.c_str());
+        }
+    }
+
+    // Auto-scroll to the bottom if enabled
+    if (autoScroll && ImGui::GetScrollY() >= ImGui::GetScrollMaxY()) {
+        ImGui::SetScrollHereY(1.0f);
+    }
+
+    ImGui::EndChild();
+    ImGui::End();
+}

src/LogSystem.h

@@ -0,0 +1,22 @@
+// LogSystem.h
+#ifndef LOGSYSTEM_H
+#define LOGSYSTEM_H
+
+#include <vector>
+#include <string>
+#include <mutex>
+
+// Global log buffer and its mutex
+extern std::vector<std::string> g_LogBuffer;
+extern std::mutex g_LogMutex;
+
+// Maximum number of log messages to retain
+constexpr size_t MAX_LOG_MESSAGES = 1000;
+
+// Function to add a new log message
+void AddLogMessage(const std::string& message);
+
+// Function to draw the log terminal
+void DrawLogTerminal(const char* title = "Terminal", bool* p_open = nullptr);
+
+#endif // LOGSYSTEM_H

src/RenderComponent.cpp

@@ -0,0 +1,51 @@
+// RenderComponent.cpp
+#include "RenderComponent.h"
+
+const std::string RenderComponent::name = "Render";
+
+RenderComponent::RenderComponent()
+    : meshName("WhiteCube"), color(1.0f, 1.0f, 1.0f)
+{
+}
+
+const std::string& RenderComponent::GetName() const
+{
+    return name;
+}
+
+const std::string& RenderComponent::GetStaticName()
+{
+    return name;
+}
+
+YAML::Node RenderComponent::Serialize()
+{
+    YAML::Node node;
+    node["MeshName"] = meshName;
+
+    // Color
+    {
+        YAML::Node colorNode;
+        colorNode.SetStyle(YAML::EmitterStyle::Flow);
+        colorNode.push_back(color.r);
+        colorNode.push_back(color.g);
+        colorNode.push_back(color.b);
+        node["Color"] = colorNode;
+    }
+
+    return node;
+}
+
+void RenderComponent::Deserialize(const YAML::Node& node)
+{
+    if (node["MeshName"])
+    {
+        meshName = node["MeshName"].as<std::string>();
+    }
+    if (node["Color"])
+    {
+        auto clr = node["Color"].as<std::vector<float>>();
+        if (clr.size() == 3)
+            color = glm::vec3(clr[0], clr[1], clr[2]);
+    }
+}

src/RenderComponent.h

@@ -0,0 +1,30 @@
+// RenderComponent.h
+#ifndef RENDER_COMPONENT_H
+#define RENDER_COMPONENT_H
+
+#include "Component.h"
+#include <string>
+#include <fstream>
+
+#include <glm/glm.hpp>
+#include <yaml-cpp/yaml.h>
+
+class RenderComponent : public Component
+{
+public:
+    std::string meshName;
+    glm::vec3 color;
+
+    RenderComponent();
+    virtual const std::string& GetName() const override;
+    static const std::string& GetStaticName();
+
+    // Serialization methods
+    virtual YAML::Node Serialize() override;
+    virtual void Deserialize(const YAML::Node& node) override;
+
+private:
+    static const std::string name;
+};
+
+#endif // RENDER_COMPONENT_H

src/RigidBody3DComponent.cpp

@@ -0,0 +1,174 @@
+// RigidBody3DComponent.cpp
+#include "RigidBody3DComponent.h"
+
+// Other necessary includes
+#include <glm/gtc/type_ptr.hpp> // For glm::value_ptr if used in ImGui
+#include <iostream>
+
+// Define the static name
+const std::string RigidBody3DComponent::name = "RigidBody";
+
+// ============================================================
+// Constructors
+// ============================================================
+
+// Default Constructor
+RigidBody3DComponent::RigidBody3DComponent()
+    : velocity(0.0f, 0.0f, 0.0f),
+      acceleration(0.0f, 0.0f, 0.0f),
+      mass(1.0f),
+      type(RigidBodyType::Dynamic)
+{
+}
+
+// Parameterized Constructor
+RigidBody3DComponent::RigidBody3DComponent(const glm::vec3 &vel, const glm::vec3 &acc, float m, RigidBodyType rbType)
+    : velocity(vel),
+      acceleration(acc),
+      mass(m),
+      type(rbType)
+{
+}
+
+// ============================================================
+// GetName Methods
+// ============================================================
+
+// Returns the name of the component
+const std::string &RigidBody3DComponent::GetName() const
+{
+    return GetStaticName();
+}
+
+// Returns the static name of the component
+const std::string &RigidBody3DComponent::GetStaticName()
+{
+    return name;
+}
+
+// ============================================================
+// Serialization Methods
+// ============================================================
+
+// Serialize the component to YAML
+YAML::Node RigidBody3DComponent::Serialize()
+{
+    YAML::Node node;
+    // Position
+    {
+        YAML::Node VelNode;
+        VelNode.SetStyle(YAML::EmitterStyle::Flow);
+        VelNode.push_back(velocity.x);
+        VelNode.push_back(velocity.y);
+        VelNode.push_back(velocity.z);
+        node["Velocity"] = VelNode;
+    }
+    {
+        YAML::Node accNode;
+        accNode.SetStyle(YAML::EmitterStyle::Flow);
+        accNode.push_back(acceleration.x);
+        accNode.push_back(acceleration.y);
+        accNode.push_back(acceleration.z);
+        node["Acceleration"] = accNode;
+    }
+    node["Mass"] = mass;
+    node["Type"] = static_cast<int>(type); // Serialize enum as int
+    return node;
+}
+
+// Deserialize the component from YAML
+void RigidBody3DComponent::Deserialize(const YAML::Node& node)
+{
+    // Deserialize Velocity
+    if (node["Velocity"])
+    {
+        try
+        {
+            auto vel = node["Velocity"].as<std::vector<float>>();
+            if (vel.size() == 3)
+                velocity = glm::vec3(vel[0], vel[1], vel[2]);
+            else
+                std::cerr << "Warning: 'Velocity' does not have exactly 3 elements. Using default value.\n";
+        }
+        catch (const YAML::Exception& e)
+        {
+            std::cerr << "Error deserializing 'Velocity': " << e.what() << "\nUsing default velocity.\n";
+            velocity = glm::vec3(0.0f, 0.0f, 0.0f); // Default value
+        }
+    }
+    else
+    {
+        std::cerr << "Warning: 'Velocity' node not found. Using default value.\n";
+        velocity = glm::vec3(0.0f, 0.0f, 0.0f);
+    }
+
+    // Deserialize Acceleration
+    if (node["Acceleration"])
+    {
+        try
+        {
+            auto acc = node["Acceleration"].as<std::vector<float>>();
+            if (acc.size() == 3)
+                acceleration = glm::vec3(acc[0], acc[1], acc[2]);
+            else
+                std::cerr << "Warning: 'Acceleration' does not have exactly 3 elements. Using default value.\n";
+        }
+        catch (const YAML::Exception& e)
+        {
+            std::cerr << "Error deserializing 'Acceleration': " << e.what() << "\nUsing default acceleration.\n";
+            acceleration = glm::vec3(0.0f, 0.0f, 0.0f); // Default value
+        }
+    }
+    else
+    {
+        std::cerr << "Warning: 'Acceleration' node not found. Using default value.\n";
+        acceleration = glm::vec3(0.0f, 0.0f, 0.0f);
+    }
+
+    // Deserialize Mass
+    if (node["Mass"])
+    {
+        try
+        {
+            mass = node["Mass"].as<float>();
+        }
+        catch (const YAML::Exception& e)
+        {
+            std::cerr << "Error deserializing 'Mass': " << e.what() << "\nUsing default mass.\n";
+            mass = 1.0f; // Default value
+        }
+    }
+    else
+    {
+        std::cerr << "Warning: 'Mass' node not found. Using default mass.\n";
+        mass = 1.0f;
+    }
+
+    // Deserialize Type
+    if (node["Type"])
+    {
+        try
+        {
+            int typeInt = node["Type"].as<int>();
+            if (typeInt >= 0 && typeInt <= 2) // Assuming enum values 0,1,2
+            {
+                type = static_cast<RigidBodyType>(typeInt);
+            }
+            else
+            {
+                std::cerr << "Warning: 'Type' has an invalid value (" << typeInt << "). Using default (Dynamic).\n";
+                type = RigidBodyType::Dynamic;
+            }
+        }
+        catch (const YAML::Exception& e)
+        {
+            std::cerr << "Error deserializing 'Type': " << e.what() << "\nUsing default type (Dynamic).\n";
+            type = RigidBodyType::Dynamic; // Default value
+        }
+    }
+    else
+    {
+        std::cerr << "Warning: 'Type' node not found. Using default type (Dynamic).\n";
+        type = RigidBodyType::Dynamic;
+    }
+}

src/RigidBody3DComponent.h

@@ -0,0 +1,43 @@
+// RigidBody3DComponent.h
+#ifndef RIGIDBODY3DCOMPONENT_H
+#define RIGIDBODY3DCOMPONENT_H
+
+#include "Component.h"
+#include <glm/glm.hpp>
+#include <yaml-cpp/yaml.h>
+#include <fstream>
+
+
+// Enum for Rigid Body Types (optional, based on your needs)
+enum class RigidBodyType {
+    Static,
+    Dynamic,
+    Kinematic
+};
+
+class RigidBody3DComponent : public Component
+{
+public:
+    // Physical Properties
+    glm::vec3 velocity;
+    glm::vec3 acceleration;
+    float mass;
+    RigidBodyType type;
+
+    // Constructors
+    RigidBody3DComponent();
+    RigidBody3DComponent(const glm::vec3& vel, const glm::vec3& acc, float m, RigidBodyType rbType);
+
+    // Override Component methods
+    virtual const std::string& GetName() const override;
+    static const std::string& GetStaticName();
+
+    // Serialization methods
+    virtual YAML::Node Serialize() override;
+    virtual void Deserialize(const YAML::Node& node) override;
+
+private:
+    static const std::string name;
+};
+
+#endif // RIGIDBODY3DCOMPONENT_H

src/Shader.cpp

@@ -0,0 +1,98 @@
+#include "Shader.h"
+#include <fstream>
+#include <sstream>
+#include <iostream>
+
+// Shader constructor
+Shader::Shader(const GLchar* vertexPath, const GLchar* fragmentPath)
+{
+    // 1. Retrieve the vertex/fragment source code from filePath
+    std::string vertexCode;
+    std::string fragmentCode;
+    std::ifstream vShaderFile;
+    std::ifstream fShaderFile;
+
+    // Ensure ifstream objects can throw exceptions
+    vShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+    fShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+    try
+    {
+        // Open files
+        vShaderFile.open(vertexPath);
+        fShaderFile.open(fragmentPath);
+        std::stringstream vShaderStream, fShaderStream;
+        // Read file's buffer contents into streams
+        vShaderStream << vShaderFile.rdbuf();
+        fShaderStream << fShaderFile.rdbuf();
+        // Close file handlers
+        vShaderFile.close();
+        fShaderFile.close();
+        // Convert stream into string
+        vertexCode = vShaderStream.str();
+        fragmentCode = fShaderStream.str();
+    }
+    catch (std::ifstream::failure& e)
+    {
+        std::cerr << "ERROR::SHADER::FILE_NOT_SUCCESSFULLY_READ\n";
+    }
+    const GLchar* vShaderCode = vertexCode.c_str();
+    const GLchar* fShaderCode = fragmentCode.c_str();
+
+    // 2. Compile shaders
+    GLuint vertex, fragment;
+    GLint success;
+    GLchar infoLog[512];
+
+    // Vertex Shader
+    vertex = glCreateShader(GL_VERTEX_SHADER);
+    glShaderSource(vertex, 1, &vShaderCode, NULL);
+    glCompileShader(vertex);
+    // Check compile errors
+    glGetShaderiv(vertex, GL_COMPILE_STATUS, &success);
+    if (!success)
+    {
+        glGetShaderInfoLog(vertex, 512, NULL, infoLog);
+        std::cerr << "ERROR::SHADER::VERTEX::COMPILATION_FAILED\n" << infoLog << '\n';
+    }
+
+    // Fragment Shader
+    fragment = glCreateShader(GL_FRAGMENT_SHADER);
+    glShaderSource(fragment, 1, &fShaderCode, NULL);
+    glCompileShader(fragment);
+    // Check compile errors
+    glGetShaderiv(fragment, GL_COMPILE_STATUS, &success);
+    if (!success)
+    {
+        glGetShaderInfoLog(fragment, 512, NULL, infoLog);
+        std::cerr << "ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n" << infoLog << '\n';
+    }
+
+    // Shader Program
+    Program = glCreateProgram();
+    glAttachShader(Program, vertex);
+    glAttachShader(Program, fragment);
+    glLinkProgram(Program);
+    // Check linking errors
+    glGetProgramiv(Program, GL_LINK_STATUS, &success);
+    if (!success)
+    {
+        glGetProgramInfoLog(Program, 512, NULL, infoLog);
+        std::cerr << "ERROR::SHADER::PROGRAM::LINKING_FAILED\n" << infoLog << '\n';
+    }
+
+    // Delete the shaders
+    glDeleteShader(vertex);
+    glDeleteShader(fragment);
+}
+
+// Activate the shader
+void Shader::Use()
+{
+    glUseProgram(Program);
+}
+
+// Set integer uniform
+void Shader::setInt(const std::string& name, int value) const
+{
+    glUniform1i(glGetUniformLocation(Program, name.c_str()), value);
+}