MyGUI  3.2.0
MyGUI_GeometryUtility.h
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1 
6 /*
7  This file is part of MyGUI.
8 
9  MyGUI is free software: you can redistribute it and/or modify
10  it under the terms of the GNU Lesser General Public License as published by
11  the Free Software Foundation, either version 3 of the License, or
12  (at your option) any later version.
13 
14  MyGUI is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  GNU Lesser General Public License for more details.
18 
19  You should have received a copy of the GNU Lesser General Public License
20  along with MyGUI. If not, see <http://www.gnu.org/licenses/>.
21 */
22 #ifndef __MYGUI_GEOMETRY_UTILITY_H__
23 #define __MYGUI_GEOMETRY_UTILITY_H__
24 
25 #include "MyGUI_Prerequest.h"
26 
27 namespace MyGUI
28 {
29 
30  typedef std::vector<FloatPoint> VectorFloatPoint;
31 
32  namespace geometry_utility
33  {
34  VectorFloatPoint cropPolygon(FloatPoint* _baseVerticiesPos, size_t _size, const IntCoord& _cropRectangle);
35 
36  enum Side {Left, Right, Top, Bottom};
37  void cropPolygonSide(VectorFloatPoint& _verticies, int _sideCoord, Side _side);
38 
39  // get point position relative to rectangle
40  FloatPoint getPositionInsideRect(const FloatPoint& _point, const FloatPoint& _corner0, const FloatPoint& _corner1, const FloatPoint& _corner2);
41 
42  FloatPoint getUVFromPositionInsideRect(const FloatPoint& _point, const FloatPoint& _v0, const FloatPoint& _v1, const FloatPoint& _baseUV);
43 
44  } // namespace geometry_utility
45 
46 } // namespace MyGUI
47 
48 #endif // __MYGUI_GEOMETRY_UTILITY_H__