#ifndef FACE_H
#define FACE_H
#include "vertex.h"
#include "tilevertexinfo.h"
#include <QVector3D>
class Face;
class Vertex;
class TileVertexInfo;
class Face
{
private:
    Vertex *m_v1;
    Vertex *m_v2;
    Vertex *m_v3;

    TileVertexInfo *m_vi1;
    TileVertexInfo *m_vi2;
    TileVertexInfo *m_vi3;

    Face * m_parent;

    QVector3D m_normal;
    Face * m_subface = NULL;
    float sign (QVector2D p1, QVector2D p2, QVector2D p3);
    bool PointInFace (QVector2D pt);

public:
    Face () { m_subface= NULL;}
    Face(Vertex *v1
         , TileVertexInfo *vi1
         , Vertex *v2
         , TileVertexInfo *vi2
         , Vertex *v3
         , TileVertexInfo *vi3);

    void setSettings(Vertex *v1
         , TileVertexInfo *vi1
         , Vertex *v2
         , TileVertexInfo *vi2
         , Vertex *v3
         , TileVertexInfo *vi3);

    void recalcNormal();
    QVector3D normal();

    inline TileVertexInfo * getVi1() { return m_vi1; }
    inline TileVertexInfo * getVi2() { return m_vi2; }
    inline TileVertexInfo * getVi3() { return m_vi3; }

    void createSub() {
        m_subface = new Face[4];
        for (int i=0; i<4;i++) {
            m_subface[i].setParent(this);
        }
    }
    inline Face &getSub(int nr) { return m_subface[nr]; }
    inline void setParent(Face *parent) {m_parent = parent;}
    void findFaces(std::vector<Face *> &vec, QVector2D s);
};

#endif // FACE_H