source: trunk/examples/opengl/pbuffers/cube.h@ 1028

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#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;