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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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#include "PxTriangleMesh.h"
#include "PxvGeometry.h"
#include "PxsMaterialManager.h"
#include "PxcNpThreadContext.h"
#include "GuHeightField.h"
#include "GuTriangleMesh.h"

using namespace physx;
using namespace Gu;

namespace physx
{
	bool PxcGetMaterialShapeMesh(const PxsShapeCore* shape0, const PxsShapeCore* shape1, PxcNpThreadContext& context, PxsMaterialInfo* materialInfo);
	bool PxcGetMaterialMesh(const PxsShapeCore* shape, const PxU32 index,  PxcNpThreadContext& context, PxsMaterialInfo* materialInfo);
}

bool physx::PxcGetMaterialMesh(const PxsShapeCore* shape, const PxU32 index, PxcNpThreadContext& context, PxsMaterialInfo* materialInfo)
{
	PX_ASSERT(index == 1);
	PX_UNUSED(index);
	ContactBuffer& contactBuffer = context.mContactBuffer;
	const PxTriangleMeshGeometryLL& shapeMesh = shape->geometry.get<const PxTriangleMeshGeometryLL>();
	if(shapeMesh.materials.numIndices <= 1)
	{
		for(PxU32 i=0; i< contactBuffer.count; ++i) 
		{
			(&materialInfo[i].mMaterialIndex0)[index] = shape->materialIndex;
		}
	}
	else
	{
		for(PxU32 i=0; i< contactBuffer.count; ++i)
		{

			Gu::ContactPoint& contact = contactBuffer.contacts[i];
			const PxU16* eaMaterialIndices = shapeMesh.materialIndices;

			const PxU32 localMaterialIndex = eaMaterialIndices[contact.internalFaceIndex1];//shapeMesh.triangleMesh->getTriangleMaterialIndex(contact.featureIndex1);
			(&materialInfo[i].mMaterialIndex0)[index] = shapeMesh.materials.indices[localMaterialIndex];
		}
	}
	return true;
}

bool physx::PxcGetMaterialShapeMesh(const PxsShapeCore* shape0, const PxsShapeCore* shape1, PxcNpThreadContext& context, PxsMaterialInfo* materialInfo)
{
	
	ContactBuffer& contactBuffer = context.mContactBuffer;
	const PxTriangleMeshGeometryLL& shapeMesh = shape1->geometry.get<const PxTriangleMeshGeometryLL>();
//	const Gu::TriangleMesh* meshData = shapeMesh.meshData;
	if(shapeMesh.materials.numIndices <= 1)
	{
		for(PxU32 i=0; i< contactBuffer.count; ++i) 
		{
			materialInfo[i].mMaterialIndex0 = shape0->materialIndex;
			materialInfo[i].mMaterialIndex1 = shape1->materialIndex;
		}
	}
	else
	{

		for(PxU32 i=0; i< contactBuffer.count; ++i)
		{

			Gu::ContactPoint& contact = contactBuffer.contacts[i];
			//contact.featureIndex0 = shape0->materialIndex;
			materialInfo[i].mMaterialIndex0 = shape0->materialIndex;
			const PxU16* eaMaterialIndices = shapeMesh.materialIndices;

			const PxU32 localMaterialIndex = eaMaterialIndices[contact.internalFaceIndex1];//shapeMesh.triangleMesh->getTriangleMaterialIndex(contact.featureIndex1);
			//contact.featureIndex1 = shapeMesh.materials.indices[localMaterialIndex];
			materialInfo[i].mMaterialIndex1 = shapeMesh.materials.indices[localMaterialIndex];

		}
	}

	return true;
}