/* Copyright (C) 2013 Karl Phillip Buhr <karlphillip@gmail.com>
 *
 * This work is licensed under the Creative Commons Attribution-ShareAlike License.
 * To view a copy of this license, visit:
 *      https://creativecommons.org/licenses/by-sa/2.5/legalcode
 *
 * Or to read the human-readable summary of the license:
 *      https://creativecommons.org/licenses/by-sa/2.5/
 */
#pragma once

#include <QGLWidget>
#include <QImage>
#include <QTime>
#include"aquarium.h"
class GLWidget : public QGLWidget
{
    Q_OBJECT
public:
    explicit GLWidget(QWidget* parent = 0);
    virtual ~GLWidget();

    /* OpenGL initialization, viewport resizing, and painting */

    void initializeGL();
    void paintGL();
    void resizeGL( int width, int height);

    void keyPressEvent(QKeyEvent *event);
    void wheelEvent(QWheelEvent *event);
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);

    /* Helper functions */
     void setXRotation(int angle);
     void setYRotation(int angle);
     void setZRotation(int angle);

     void _view_ortho();
     void _view_perspective();
    static void repereScene3D(float l);
private:
    int _width;
    int _height;

    QTime   now;
    QPoint last_pos;
    double x,y,z, distance;
    double x_rot,y_rot,z_rot;
    aquarium* aqua;
    int nb_obs;
    int _fps;
    GLuint  _texture;

protected slots:
    void _tick();
};