geometry.h

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#ifndef GEOMETRY_H
#define GEOMETRY_H

#include <QtGui\qmatrix4x4.h>

class Cube final
{
public:
    enum Corner
    {
        MinMinMin = 0,
        MaxMinMin,
        MinMaxMin,
        MaxMaxMin,
        MinMinMax,
        MaxMinMax,
        MinMaxMax,
        MaxMaxMax,
        COUNT // = 8
    };

    explicit Cube(float sideLength = 1.0f);
    ~Cube();

    const QVector3D * const getVertices() const;

    static const ushort triangleIndices[36];
    static const ushort triangleCount = 12;

    static const ushort quadIndices[24];
    static const ushort quadCount = 6;

    static const ushort lineIndices[24];
    static const ushort lineCount=12;


    QVector<QVector4D> transform(const QMatrix4x4& mat) const;

    QVector<QVector4D> transform(const QMatrix4x4& mat,QVector4D& minPos,QVector4D& maxPos) const;

    QVector<QVector3D> transform3D(const QMatrix4x4& mat,QVector3D& minPos,QVector3D& maxPos) const;

private:
    float m_sidelength;
    QVector3D* m_vertices;
    //const unsigned short triIndices[],lineIndices[];
};


bool LineIntersectPlane(const QVector3D& lineStart, const QVector3D& lineVec, const QVector3D& planePoint,const QVector3D& planeNormal, float& d);


#endif