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/*************************************************************************/
/* triangulate.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#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
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