/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the examples of the Qt Toolkit.

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef CUBE_H

#define CUBE_H

#include <QtOpenGL/qgl.h>

#include <QtCore/qvector.h>

#include <QtGui/qmatrix4x4.h>

#include <QtGui/qvector3d.h>

#include <QtGui/qvector2d.h>

QT_BEGIN_NAMESPACE

class QPropertyAnimation;

QT_END_NAMESPACE

class Geometry

{

public:

    void loadArrays() const;

    void addQuad(const QVector3D &a, const QVector3D &b,

                 const QVector3D &c, const QVector3D &d,

                 const QVector<QVector2D> &tex);

    void setColors(int start, GLfloat colors[4][4]);

    const GLushort *indices() const { return faces.constData(); }

    int count() const { return faces.count(); }

private:

    QVector<GLushort> faces;

    QVector<QVector3D> vertices;

    QVector<QVector3D> normals;

    QVector<QVector2D> texCoords;

    QVector<QVector4D> colors;

    int append(const QVector3D &a, const QVector3D &n, const QVector2D &t);

    void addTri(const QVector3D &a, const QVector3D &b, const QVector3D &c, const QVector3D &n);

    friend class Tile;

};

class Tile

{

public:

    void draw() const;

    void setColors(GLfloat[4][4]);

protected:

    Tile(const QVector3D &loc = QVector3D());

    QVector3D location;

    QQuaternion orientation;

private:

    int start;

    int count;

    bool useFlatColor;

    GLfloat faceColor[4];

    Geometry *geom;

    friend class TileBuilder;

};

class TileBuilder

{

public:

    enum { bl, br, tr, tl };

    TileBuilder(Geometry *, qreal depth = 0.0f, qreal size = 1.0f);

    Tile *newTile(const QVector3D &loc = QVector3D()) const;

    void setColor(QColor c) { color = c; }

protected:

    void initialize(Tile *) const;

    QVector<QVector3D> verts;

    QVector<QVector2D> tex;

    int start;

    int count;

    Geometry *geom;

    QColor color;

};

class Cube : public QObject, public Tile

{

    Q_OBJECT

    Q_PROPERTY(qreal range READ range WRITE setRange)

    Q_PROPERTY(qreal altitude READ altitude WRITE setAltitude)

    Q_PROPERTY(qreal rotation READ rotation WRITE setRotation)

public:

    Cube(const QVector3D &loc = QVector3D());

    ~Cube();

    qreal range() { return location.x(); }

    void setRange(qreal r);

    qreal altitude() { return location.y(); }

    void setAltitude(qreal a);

    qreal rotation() { return rot; }

    void setRotation(qreal r);

    void removeBounce();

    void startAnimation();

    void setAnimationPaused(bool paused);

signals:

    void changed();

private:

    qreal rot;

    QPropertyAnimation *r;

    QPropertyAnimation *a;

    QPropertyAnimation *rtn;

    qreal startx;

    friend class CubeBuilder;

};

class CubeBuilder : public TileBuilder

{

public:

    CubeBuilder(Geometry *, qreal depth = 0.0f, qreal size = 1.0f);

    Cube *newCube(const QVector3D &loc = QVector3D()) const;

private:

    mutable int ix;

};

#endif // CUBE_H