/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
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** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
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**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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****************************************************************************/

#ifndef GLWIDGET_H
#define GLWIDGET_H

#include <QGLWidget>
#include <QtGui/qvector3d.h>
#include <QtGui/qmatrix4x4.h>
#include <QtOpenGL/qglshaderprogram.h>
#include <QTime>
#include <QVector>

class Bubble;
class GLWidget : public QGLWidget {

    Q_OBJECT
public:
    GLWidget(QWidget *parent = 0);
    ~GLWidget();
public slots: 
    void setScaling(int scale);
    void setLogo();
    void setTexture();
    void showBubbles(bool);
protected:
    void paintGL ();
    void initializeGL ();
private:
    GLuint  m_uiTexture;
    qreal   m_fAngle;
    qreal   m_fScale;
    bool m_showBubbles;
    void paintTexturedCube();
    void paintQtLogo();
    void createGeometry();
    void createBubbles(int number);
    void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4);
    void extrude(qreal x1, qreal y1, qreal x2, qreal y2);
    QVector<QVector3D> vertices;
    QVector<QVector3D> normals;
    bool qtLogo;
    QList<Bubble*> bubbles;
    int frames;
    QTime time;
    QGLShaderProgram program1;
    QGLShaderProgram program2;
    int vertexAttr1;
    int normalAttr1;
    int matrixUniform1;
    int vertexAttr2;
    int normalAttr2;
    int texCoordAttr2;
    int matrixUniform2;
    int textureUniform2;
};
#endif
