#ifndef CAMERA_H
#define CAMERA_H

#include <glm/mat4x4.hpp>
#include <glm/vec3.hpp>
#include <glm/vec2.hpp>

class Camera
{
    bool m_projectionHasChanged;
    bool m_viewHasChanged;
    glm::mat4 m_projectionMatrix;
    glm::mat4 m_viewMatrix;
    float m_fov;
    int m_width;
    int m_height;
    float m_near;
    float m_far;
    glm::vec3 m_position;
    glm::vec2 m_rotation;

    void computeProjectionMatrix();
    void computeViewMatrix();
public:
    //constructor
    Camera(int width = 800, int height = 600, float fov_y = 45, float near = 0.1f, float far = 10.0f, glm::vec3 pos = glm::vec3());

    // setters
    // relative:
    void translate(glm::vec3 vector);
    void rotate(glm::vec2 rad_vector);
    // absolute:
    void zoom(float new_fov_y);
    void resize(int width, int height);
    void setNear(float near);
    void setFar(float far);
    void moveTo(glm::vec3 position);
    void lookAt(glm::vec3 position);
    void lookAt(glm::vec2 rotation);

    // getters
    glm::mat4 getProjectionMatrix();
    glm::mat4 getViewMatrix();
};

#endif // CAMERA_H