text: //
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  //  * Redistributions of source code must retain the above copyright
  //    notice, this list of conditions and the following disclaimer.
  //  * Redistributions in binary form must reproduce the above copyright
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  //    documentation and/or other materials provided with the distribution.
  //  * Neither the name of NVIDIA CORPORATION nor the names of its
  //    contributors may be used to endorse or promote products derived
  //    from this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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  // PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  // Copyright (c) 2018 NVIDIA Corporation. All rights reserved.
  
  #include "RTdef.h"
  #if RT_COMPILE
  #ifndef COMPOUND_GEOMETRY_BASE
  #define COMPOUND_GEOMETRY_BASE
  
  #include <foundation/PxVec3.h>
  #include <foundation/PxPlane.h>
  #include <PsArray.h>
  #include <PsUserAllocated.h>
  
  namespace physx
  {
  namespace fracture
  {
  namespace base
  {
  
  // -----------------------------------------------------------------------------------
  class CompoundGeometry : public ::physx::shdfnd::UserAllocated
  {
  public:
  	CompoundGeometry() {}
  	virtual ~CompoundGeometry() {}
  	bool loadFromFile(const char *filename);
  	bool saveFromFile(const char *filename);
  	void clear();
  	void derivePlanes();
  
  	virtual void debugDraw(int /*maxConvexes*/ = 0) const {}
  
  	struct Convex {			// init using CompoundGeometry::initConvex()
  		int firstVert;
  		int numVerts;
  		int firstNormal;	// one per face index!	If not provided (see face flags) face normal is used
  		int firstIndex;
  		int numFaces;
  		int firstPlane;
  		int firstNeighbor;
  		int numNeighbors;
  		float radius;
  		bool isSphere;
  	};
  
  	void initConvex(Convex &c);
  
  	shdfnd::Array<Convex> convexes;
  	shdfnd::Array<PxVec3> vertices;
  	shdfnd::Array<PxVec3> normals;	// one per face and vertex!
  	// face size, face flags, id, id, .., face size, face flags, id ..
  	shdfnd::Array<int> indices;
  	shdfnd::Array<int> neighbors;
  
  	shdfnd::Array<PxPlane> planes;  // derived for faster cuts
  
  	enum FaceFlags {
  		FF_OBJECT_SURFACE = 1,
  		FF_HAS_NORMALS = 2,
  		FF_INVISIBLE = 4,
  		FF_NEW = 8,
  	};
  };
  
  }
  }
  }
  
  #endif
  #endif