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diff --git a/source/blender/blenkernel/BKE_navmesh_conversion.h b/source/blender/blenkernel/BKE_navmesh_conversion.h
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+++ b/source/blender/blenkernel/BKE_navmesh_conversion.h
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+/**
+* $Id$ 
+*
+* ***** BEGIN GPL LICENSE BLOCK *****
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+* All rights reserved.
+*
+* The Original Code is: all of this file.
+*
+* Contributor(s): none yet.
+*
+* ***** END GPL LICENSE BLOCK *****
+*/
+
+#ifndef BKE_NAVMESH_CONVERSION_H
+#define BKE_NAVMESH_CONVERSION_H
+
+struct DerivedMesh;
+
+/* navmesh_conversion.c */
+int buildNavMeshDataByDerivedMesh(struct DerivedMesh *dm, int *vertsPerPoly,
+								   int *nverts, float **verts,
+								   int *ndtris, unsigned short **dtris,
+								   int *npolys, unsigned short **dmeshes,
+								   unsigned short **polys, int **dtrisToPolysMap,
+								   int **dtrisToTrisMap, int **trisToFacesMap);
+
+int buildRawVertIndicesData(struct DerivedMesh* dm, int *nverts, float **verts,
+				int *ntris, unsigned short **tris, int **trisToFacesMap,
+				int **recastData);
+
+int buildNavMeshData(const int nverts, const float* verts,
+					  const int ntris, const unsigned short *tris,
+					  const int* recastData, const int* trisToFacesMap,
+					  int *ndtris, unsigned short **dtris,
+					  int *npolys, unsigned short **dmeshes, unsigned short **polys,
+					  int *vertsPerPoly, int **dtrisToPolysMap, int **dtrisToTrisMap);
+
+int buildPolygonsByDetailedMeshes(const int vertsPerPoly, const int npolys,
+				unsigned short* polys, const unsigned short* dmeshes,
+				const float* verts, const unsigned short* dtris,
+				const int* dtrisToPolysMap);
+
+int polyNumVerts(const unsigned short* p, const int vertsPerPoly);
+int polyIsConvex(const unsigned short* p, const int vertsPerPoly, const float* verts);
+int polyFindVertex(const unsigned short* p, const int vertsPerPoly, unsigned short vertexIdx);
+float distPointToSegmentSq(const float* point, const float* a, const float* b);
+
+
+#endif //NAVMESH_CONVERSION_H