axmol/extensions/spine/runtime/include/spine/Triangulator.h

71 lines
2.6 KiB
C++

/******************************************************************************
* Spine Runtimes License Agreement
* Last updated September 24, 2021. Replaces all prior versions.
*
* Copyright (c) 2013-2021, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#ifndef Spine_Triangulator_h
#define Spine_Triangulator_h
#include <spine/Vector.h>
#include <spine/Pool.h>
namespace spine {
class SP_API Triangulator : public SpineObject {
public:
~Triangulator();
Vector<int> &triangulate(Vector<float> &vertices);
Vector<Vector < float>* > &
decompose(Vector<float>
&vertices,
Vector<int> &triangles
);
private:
Vector<Vector < float>* >
_convexPolygons;
Vector<Vector < int>* >
_convexPolygonsIndices;
Vector<int> _indices;
Vector<bool> _isConcaveArray;
Vector<int> _triangles;
Pool <Vector<float>> _polygonPool;
Pool <Vector<int>> _polygonIndicesPool;
static bool isConcave(int index, int vertexCount, Vector<float> &vertices, Vector<int> &indices);
static bool positiveArea(float p1x, float p1y, float p2x, float p2y, float p3x, float p3y);
static int winding(float p1x, float p1y, float p2x, float p2y, float p3x, float p3y);
};
}
#endif /* Spine_Triangulator_h */