115 lines
2.2 KiB
C++
115 lines
2.2 KiB
C++
#pragma once
|
|
#ifndef CAMERA_H
|
|
#define CAMERA_H
|
|
|
|
#include <glad/glad.h>
|
|
#include <glm/glm.hpp>
|
|
#include <glm/gtc/matrix_transform.hpp>
|
|
|
|
enum Camera_Movement
|
|
{
|
|
FORWARD,
|
|
BACKWARD,
|
|
LEFT,
|
|
RIGHT
|
|
};
|
|
|
|
const float YAW = -90.0f;
|
|
const float PITCH = 0.0f;
|
|
const float SPEED = 2.5f;
|
|
const float SENSITIVITY = 0.1f;
|
|
const float ZOOM = 45.0f;
|
|
|
|
class Camera
|
|
{
|
|
public:
|
|
glm::vec3 Position;
|
|
glm::vec3 Front;
|
|
glm::vec3 Up;
|
|
glm::vec3 Right;
|
|
glm::vec3 WorldUp;
|
|
|
|
float Yaw;
|
|
float Pitch;
|
|
|
|
float MovementSpeed;
|
|
float MouseSensitivity;
|
|
float Zoom;
|
|
|
|
Camera(
|
|
glm::vec3 position = glm::vec3(0.0f, 0.0f, 0.0f),
|
|
glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f),
|
|
float yaw = YAW,
|
|
float pitch = PITCH)
|
|
:
|
|
Front(glm::vec3(0.0f, 0.0f, -1.0f)),
|
|
MovementSpeed(SPEED),
|
|
MouseSensitivity(SENSITIVITY),
|
|
Zoom(ZOOM)
|
|
{
|
|
Position = position;
|
|
WorldUp = up;
|
|
Yaw = yaw;
|
|
Pitch = pitch;
|
|
updateCameraVectors();
|
|
}
|
|
|
|
glm::mat4 GetViewMatrix()
|
|
{
|
|
return glm::lookAt(Position, Position + Front, Up);
|
|
}
|
|
|
|
void ProcessKeyboard(Camera_Movement direction, float deltaTime)
|
|
{
|
|
float velocity = MovementSpeed * deltaTime;
|
|
if (direction == FORWARD)
|
|
Position += Front * velocity;
|
|
if (direction == BACKWARD)
|
|
Position -= Front * velocity;
|
|
if (direction == LEFT)
|
|
Position -= Right * velocity;
|
|
if (direction == RIGHT)
|
|
Position += Right * velocity;
|
|
}
|
|
|
|
void ProcessMouseMovement(float xoffset, float yoffset, GLboolean constrainPitch = true)
|
|
{
|
|
xoffset *= MouseSensitivity;
|
|
yoffset *= MouseSensitivity;
|
|
|
|
Yaw += xoffset;
|
|
Pitch += yoffset;
|
|
|
|
if (constrainPitch)
|
|
{
|
|
if (Pitch > 89.0f)
|
|
Pitch = 89.0f;
|
|
if (Pitch < -89.0f)
|
|
Pitch = -89.0f;
|
|
}
|
|
|
|
updateCameraVectors();
|
|
}
|
|
|
|
void ProcessMouseScroll(float yoffset)
|
|
{
|
|
Zoom -= (float)yoffset;
|
|
if (Zoom < 1.0f)
|
|
Zoom = 1.0f;
|
|
if (Zoom > 45.0f)
|
|
Zoom = 45.0f;
|
|
}
|
|
private:
|
|
void updateCameraVectors()
|
|
{
|
|
glm::vec3 front;
|
|
front.x = cos(glm::radians(Yaw)) * cos(glm::radians(Pitch));
|
|
front.y = sin(glm::radians(Pitch));
|
|
front.z = sin(glm::radians(Yaw)) * cos(glm::radians(Pitch));
|
|
Front = glm::normalize(front);
|
|
Right = glm::normalize(glm::cross(Front, WorldUp));
|
|
Up = glm::normalize(glm::cross(Right, Front));
|
|
}
|
|
};
|
|
|
|
#endif |