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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_SYSTEM_CORE_H
#define PT_PARTICLE_SYSTEM_CORE_H
#include "PxPhysXConfig.h"
#if PX_USE_PARTICLE_SYSTEM_API
#include "foundation/PxBounds3.h"
#include "foundation/PxStrideIterator.h"
#include "CmPhysXCommon.h"
#include "PtParticleSystemFlags.h"
#include "particles/PxParticleReadData.h"
#include "CmBitMap.h"
namespace physx
{
class PxParticleCreationData;
class PxSerializationContext;
namespace Pt
{
typedef size_t ShapeHandle;
typedef size_t BodyHandle;
/*!
Particle system / particle fluid parameter. API + internal.
*/
struct ParticleSystemParameter
{
//= ATTENTION! =====================================================================================
// Changing the data layout of this class breaks the binary serialization format. See comments for
// PX_BINARY_SERIAL_VERSION. If a modification is required, please adjust the getBinaryMetaData
// function. If the modification is made on a custom branch, please change PX_BINARY_SERIAL_VERSION
// accordingly.
//==================================================================================================
ParticleSystemParameter(const PxEMPTY) : particleReadDataFlags(PxEmpty)
{
}
ParticleSystemParameter()
{
}
PxReal restParticleDistance;
PxReal kernelRadiusMultiplier;
PxReal viscosity;
PxReal surfaceTension;
PxReal fadeInTime;
PxU32 flags;
PxU32 packetSizeMultiplierLog2;
PxReal restitution;
PxReal dynamicFriction;
PxReal staticFriction;
PxReal restDensity;
PxReal damping;
PxReal stiffness;
PxReal maxMotionDistance;
PxReal restOffset;
PxReal contactOffset;
PxPlane projectionPlane;
PxParticleReadDataFlags particleReadDataFlags;
PxU32 noiseCounter; // Needed for deterministic temporal noise
};
/*!
Descriptor for particle retrieval
*/
struct ParticleSystemStateDataDesc
{
PxU32 maxParticles;
PxU32 numParticles;
PxU32 validParticleRange;
const Cm::BitMap* bitMap;
PxStrideIterator<const PxVec3> positions;
PxStrideIterator<const PxVec3> velocities;
PxStrideIterator<const ParticleFlags> flags;
PxStrideIterator<const PxF32> restOffsets;
};
/*!
Descriptor for particle retrieval: TODO
*/
struct ParticleSystemSimDataDesc
{
PxStrideIterator<const PxF32> densities; //! Particle densities
PxStrideIterator<const PxVec3> collisionNormals; //! Particle collision normals
PxStrideIterator<const PxVec3> collisionVelocities; //! Particle collision velocities
PxStrideIterator<const PxVec3> twoWayImpluses; //! collision impulses(for two way interaction)
PxStrideIterator<BodyHandle> twoWayBodies; //! Colliding rigid bodies each particle (zero if no collision)
};
class ParticleSystemState
{
public:
virtual ~ParticleSystemState()
{
}
virtual bool addParticlesV(const PxParticleCreationData& creationData) = 0;
virtual void removeParticlesV(PxU32 count, const PxStrideIterator<const PxU32>& indices) = 0;
virtual void removeParticlesV() = 0;
/**
If fullState is set, the entire particle state is read, ignoring PxParticleReadDataFlags
*/
virtual void getParticlesV(ParticleSystemStateDataDesc& particles, bool fullState, bool devicePtr) const = 0;
virtual void setPositionsV(PxU32 numParticles, const PxStrideIterator<const PxU32>& indices,
const PxStrideIterator<const PxVec3>& positions) = 0;
virtual void setVelocitiesV(PxU32 numParticles, const PxStrideIterator<const PxU32>& indices,
const PxStrideIterator<const PxVec3>& velocities) = 0;
virtual void setRestOffsetsV(PxU32 numParticles, const PxStrideIterator<const PxU32>& indices,
const PxStrideIterator<const PxF32>& restOffsets) = 0;
virtual void addDeltaVelocitiesV(const Cm::BitMap& bufferMap, const PxVec3* buffer, PxReal multiplier) = 0;
virtual PxBounds3 getWorldBoundsV() const = 0;
virtual PxU32 getMaxParticlesV() const = 0;
virtual PxU32 getParticleCountV() const = 0;
};
} // namespace Pt
} // namespace physx
#endif // PX_USE_PARTICLE_SYSTEM_API
#endif // PT_PARTICLE_SYSTEM_CORE_H
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