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// This code contains NVIDIA Confidential Information and is disclosed to you
// under a form of NVIDIA software license agreement provided separately to you.
//
// Notice
// NVIDIA Corporation and its licensors retain all intellectual property and
// proprietary rights in and to this software and related documentation and
// any modifications thereto. Any use, reproduction, disclosure, or
// distribution of this software and related documentation without an express
// license agreement from NVIDIA Corporation is strictly prohibited.
//
// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
//
// Information and code furnished is believed to be accurate and reliable.
// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// Copyright (c) 2008-2017 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#include "foundation/PxMath.h"
#include "CookingUtils.h"
#include "CmRadixSortBuffered.h"
#include "PsAllocator.h"
#include "PsFPU.h"
using namespace physx;
using namespace Cm;
ReducedVertexCloud::ReducedVertexCloud(const PxVec3* verts, PxU32 nb_verts) : mNbRVerts(0), mRVerts(NULL), mXRef(NULL)
{
mVerts = verts;
mNbVerts = nb_verts;
}
ReducedVertexCloud::~ReducedVertexCloud()
{
Clean();
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Frees used ram.
* \return Self-reference
*/
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
ReducedVertexCloud& ReducedVertexCloud::Clean()
{
PX_DELETE_POD(mXRef);
PX_FREE_AND_RESET(mRVerts);
return *this;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Reduction method. Use this to create a minimal vertex cloud.
* \param rc [out] result structure
* \return true if success
* \warning This is not about welding nearby vertices, here we look for real redundant ones.
*/
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
bool ReducedVertexCloud::Reduce(REDUCEDCLOUD* rc)
{
Clean();
mXRef = PX_NEW(PxU32)[mNbVerts];
float* f = PX_NEW_TEMP(float)[mNbVerts];
for(PxU32 i=0;i<mNbVerts;i++)
f[i] = mVerts[i].x;
RadixSortBuffered Radix;
Radix.Sort(reinterpret_cast<const PxU32*>(f), mNbVerts, RADIX_UNSIGNED);
for(PxU32 i=0;i<mNbVerts;i++)
f[i] = mVerts[i].y;
Radix.Sort(reinterpret_cast<const PxU32*>(f), mNbVerts, RADIX_UNSIGNED);
for(PxU32 i=0;i<mNbVerts;i++)
f[i] = mVerts[i].z;
const PxU32* Sorted = Radix.Sort(reinterpret_cast<const PxU32*>(f), mNbVerts, RADIX_UNSIGNED).GetRanks();
PX_DELETE_POD(f);
mNbRVerts = 0;
const PxU32 Junk[] = {PX_INVALID_U32, PX_INVALID_U32, PX_INVALID_U32};
const PxU32* Previous = Junk;
mRVerts = reinterpret_cast<PxVec3*>(PX_ALLOC(sizeof(PxVec3) * mNbVerts, "PxVec3"));
PxU32 Nb = mNbVerts;
while(Nb--)
{
const PxU32 Vertex = *Sorted++; // Vertex number
const PxU32* current = reinterpret_cast<const PxU32*>(&mVerts[Vertex]);
if(current[0]!=Previous[0] || current[1]!=Previous[1] || current[2]!=Previous[2])
mRVerts[mNbRVerts++] = mVerts[Vertex];
Previous = current;
mXRef[Vertex] = mNbRVerts-1;
}
if(rc)
{
rc->CrossRef = mXRef;
rc->NbRVerts = mNbRVerts;
rc->RVerts = mRVerts;
}
return true;
}
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