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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * 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
// notice, this list of conditions and the following disclaimer in the
// 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
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PT_PARTICLE_CONTACT_MANAGER_STREAM_H
#define PT_PARTICLE_CONTACT_MANAGER_STREAM_H
#include "PxPhysXConfig.h"
#if PX_USE_PARTICLE_SYSTEM_API
namespace physx
{
struct PxsRigidCore;
namespace Pt
{
class ParticleShape;
struct ParticleStreamContactManager
{
const PxsRigidCore* rigidCore;
const PxsShapeCore* shapeCore;
const PxTransform* w2sOld;
bool isDrain;
bool isDynamic;
};
struct ParticleStreamShape
{
const ParticleShape* particleShape;
PxU32 numContactManagers;
const ParticleStreamContactManager* contactManagers;
};
class ParticleContactManagerStreamWriter
{
public:
static PxU32 getStreamSize(PxU32 numParticleShapes, PxU32 numContactManagers)
{
return sizeof(PxU32) + // particle shape count
sizeof(PxU32) + // stream size
numParticleShapes * (sizeof(ParticleShape*) + sizeof(PxU32)) + // shape ll pointer + contact manager
// count per shape
numContactManagers * sizeof(ParticleStreamContactManager); // contact manager data
}
PX_FORCE_INLINE ParticleContactManagerStreamWriter(PxU8* stream, PxU32 numParticleShapes, PxU32 numContactManagers)
: mStream(stream), mNumContactsPtr(NULL)
{
PX_ASSERT(mStream);
*reinterpret_cast<PxU32*>(mStream) = numParticleShapes;
mStream += sizeof(PxU32);
*reinterpret_cast<PxU32*>(mStream) = getStreamSize(numParticleShapes, numContactManagers);
mStream += sizeof(PxU32);
}
PX_FORCE_INLINE void addParticleShape(const ParticleShape* particleShape)
{
*reinterpret_cast<const ParticleShape**>(mStream) = particleShape;
mStream += sizeof(const ParticleShape*);
mNumContactsPtr = reinterpret_cast<PxU32*>(mStream);
mStream += sizeof(PxU32);
*mNumContactsPtr = 0;
}
PX_FORCE_INLINE void addContactManager(const PxsRigidCore* rigidCore, const PxsShapeCore* shapeCore,
const PxTransform* w2sOld, bool isDrain, bool isDynamic)
{
ParticleStreamContactManager& cm = *reinterpret_cast<ParticleStreamContactManager*>(mStream);
mStream += sizeof(ParticleStreamContactManager);
cm.rigidCore = rigidCore;
cm.shapeCore = shapeCore;
cm.w2sOld = w2sOld;
cm.isDrain = isDrain;
cm.isDynamic = isDynamic;
PX_ASSERT(mNumContactsPtr);
(*mNumContactsPtr)++;
}
private:
PxU8* mStream;
PxU32* mNumContactsPtr;
};
class ParticleContactManagerStreamIterator
{
public:
PX_FORCE_INLINE ParticleContactManagerStreamIterator()
{
}
PX_FORCE_INLINE ParticleContactManagerStreamIterator(const PxU8* stream) : mStream(stream)
{
}
ParticleContactManagerStreamIterator getNext(ParticleStreamShape& next)
{
const ParticleShape* const* tmp0 = reinterpret_cast<const ParticleShape* const*>(mStream);
mStream += sizeof(ParticleShape*);
const PxU32* tmp1 = reinterpret_cast<const PxU32*>(mStream);
next.particleShape = *tmp0;
next.numContactManagers = *tmp1;
mStream += sizeof(PxU32);
next.contactManagers = reinterpret_cast<const ParticleStreamContactManager*>(mStream);
mStream += next.numContactManagers * sizeof(ParticleStreamContactManager);
return ParticleContactManagerStreamIterator(mStream);
}
PX_FORCE_INLINE ParticleContactManagerStreamIterator getNext()
{
mStream += sizeof(ParticleShape*);
PxU32 numContactManagers = *reinterpret_cast<const PxU32*>(mStream);
mStream += sizeof(PxU32);
mStream += numContactManagers * sizeof(ParticleStreamContactManager);
return ParticleContactManagerStreamIterator(mStream);
}
PX_FORCE_INLINE bool operator==(const ParticleContactManagerStreamIterator& it)
{
return mStream == it.mStream;
}
PX_FORCE_INLINE bool operator!=(const ParticleContactManagerStreamIterator& it)
{
return mStream != it.mStream;
}
PX_FORCE_INLINE const PxU8* getStream()
{
return mStream;
}
private:
friend class ParticleContactManagerStreamReader;
private:
const PxU8* mStream;
};
class ParticleContactManagerStreamReader
{
public:
/*
Reads header of stream consisting of shape count and stream end pointer
*/
PX_FORCE_INLINE ParticleContactManagerStreamReader(const PxU8* stream)
{
PX_ASSERT(stream);
mStreamDataBegin = stream;
mNumParticleShapes = *reinterpret_cast<const PxU32*>(mStreamDataBegin);
mStreamDataBegin += sizeof(PxU32);
PxU32 streamSize = *reinterpret_cast<const PxU32*>(mStreamDataBegin);
mStreamDataBegin += sizeof(PxU32);
mStreamDataEnd = stream + streamSize;
}
PX_FORCE_INLINE ParticleContactManagerStreamIterator getBegin() const
{
return ParticleContactManagerStreamIterator(mStreamDataBegin);
}
PX_FORCE_INLINE ParticleContactManagerStreamIterator getEnd() const
{
return ParticleContactManagerStreamIterator(mStreamDataEnd);
}
PX_FORCE_INLINE PxU32 getNumParticleShapes() const
{
return mNumParticleShapes;
}
private:
PxU32 mNumParticleShapes;
const PxU8* mStreamDataBegin;
const PxU8* mStreamDataEnd;
};
} // namespace Pt
} // namespace physx
#endif // PX_USE_PARTICLE_SYSTEM_API
#endif // PT_PARTICLE_CONTACT_MANAGER_STREAM_H
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