64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
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#include "Camera.h"
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glm::mat4 Camera::GetViewMatrix() const
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{
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return glm::lookAt(Position, Position + Front, Up);
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}
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void Camera::ProcessKeyboard(CameraMovement direction, float deltaTime)
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{
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float velocity = MovementSpeed * deltaTime;
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if (direction == FORWARD)
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Position += Front * velocity;
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if (direction == BACKWARD)
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Position -= Front * velocity;
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if (direction == LEFT)
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Position -= Right * velocity;
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if (direction == RIGHT)
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Position += Right * velocity;
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if (direction == UP)
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Position += Up * velocity;
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if (direction == DOWN)
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Position -= Up * velocity;
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}
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void Camera::ProcessMouseMovement(float xoffset, float yoffset, GLboolean constrainPitch)
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{
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xoffset *= MouseSensitivity;
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yoffset *= MouseSensitivity;
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Yaw += xoffset;
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Pitch += yoffset;
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// make sure that when pitch is out of bounds, screen doesn't get flipped
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if (constrainPitch)
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{
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if (Pitch > 89.0f)
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Pitch = 89.0f;
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if (Pitch < -89.0f)
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Pitch = -89.0f;
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}
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// update Front, Right and Up Vectors using the updated Euler angles
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UpdateCameraVectors();
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}
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void Camera::ProcessMouseScroll(float yoffset)
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{
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Zoom -= (float)yoffset;
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if (Zoom < 1.0f)
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Zoom = 1.0f;
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if (Zoom > 45.0f)
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Zoom = 45.0f;
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}
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void Camera::UpdateCameraVectors()
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{
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glm::vec3 front;
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front.x = cos(glm::radians(Yaw)) * cos(glm::radians(Pitch));
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front.y = sin(glm::radians(Pitch));
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front.z = sin(glm::radians(Yaw)) * cos(glm::radians(Pitch));
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Front = glm::normalize(front);
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Right = glm::normalize(glm::cross(Front, WorldUp));
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Up = glm::normalize(glm::cross(Right, Front));
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}
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