glwidget.h

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#ifndef GLWIDGET_H
#define GLWIDGET_H

#include <QGLWidget>

class Geometry;
class Cube;
class Tile;
QT_BEGIN_NAMESPACE
class QGLPixelBuffer;
QT_END_NAMESPACE

class GLWidget : public QGLWidget
{
public:
    GLWidget(QWidget *parent = 0);
    ~GLWidget();

protected:
    void initializeGL() Q_DECL_OVERRIDE;
    void paintGL() Q_DECL_OVERRIDE;
    void resizeGL(int width, int height) Q_DECL_OVERRIDE;
    void mousePressEvent(QMouseEvent *) Q_DECL_OVERRIDE { setAnimationPaused(true); }
    void mouseReleaseEvent(QMouseEvent *) Q_DECL_OVERRIDE { setAnimationPaused(false); }

private:
    void initializeGeometry();
    void initPbuffer();
    void initCommon();
    void perspectiveProjection();