triangulate.h

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/*  triangulate.h                                                        */
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#ifndef TRIANGULATE_H
#define TRIANGULATE_H

#include "math_2d.h"


/*
http://www.flipcode.com/archives/Efficient_Polygon_Triangulation.shtml
*/

class Triangulate
{
public:

    // triangulate a contour/polygon, places results in STL vector
    // as series of triangles.
    static bool triangulate(const Vector< Vector2 > &contour, Vector<int> &result);

    // compute area of a contour/polygon
    static float get_area(const Vector< Vector2 > &contour);

    // decide if point Px/Py is inside triangle defined by
    // (Ax,Ay) (Bx,By) (Cx,Cy)
    static bool is_inside_triangle(float Ax, float Ay,
              float Bx, float By,
              float Cx, float Cy,
              float Px, float Py);


private:
    static bool snip(const Vector<Vector2> &p_contour,int u,int v,int w,int n,int *V);

};



#endif