#ifndef OPENGL_WIDGET_HH
#define OPENGL_WIDGET_HH

#include "opengl_mesh.hh"

#include <QOpenGLWidget>
#include <QMatrix4x4>
#include <QOpenGLFunctions_4_4_Core>
#include <QOpenGLShaderProgram>
#include <QOpenGLVertexArrayObject>
#include <QOpenGLBuffer>

#define FOV 70


class OpenGLWidget : public QOpenGLWidget, public QOpenGLFunctions_4_4_Core {
	Q_OBJECT

	QMatrix4x4 rot, rot_start, proj;
	GLfloat cam_dist = 1;
	QPoint mouse_pos;

	QOpenGLShaderProgram main_program;
	QOpenGLShaderProgram skybox_program;
	GLuint skybox_tex;
	GLuint skybox_vao;
	GLuint skybox_vbo;

	void loadSkybox();

protected:
    virtual void mousePressEvent(QMouseEvent *e);
    virtual void mouseReleaseEvent(QMouseEvent *e);
    virtual void mouseMoveEvent(QMouseEvent *e);
    virtual void wheelEvent(QWheelEvent *e);

public:
	static OpenGLWidget *instance;

	QVector<OpenGLMesh> meshes;

	OpenGLWidget(QWidget *parent=nullptr);
	~OpenGLWidget();
	void initializeGL() override;
	void resizeGL(int w, int h) override;
	void paintGL() override;

signals:
	void initialized();
};


#endif