Revision control
++ // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
++ // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
++ // SPDX-FileCopyrightText: Copyright (c) 2008-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
++ // SPDX-License-Identifier: Apache-2.0
++
++ #ifndef PX_PARTICLE_NEIGHBORHOOD_PROVIDER_H
++ #define PX_PARTICLE_NEIGHBORHOOD_PROVIDER_H
++
++
++ #include "cudamanager/PxCudaContext.h"
++ #include "cudamanager/PxCudaContextManager.h"
++
++ #include "foundation/PxSimpleTypes.h"
++ #include "foundation/PxVec4.h"
++ #include "PxParticleSystem.h"
++
++ #include "foundation/PxArray.h"
++ #include "PxParticleGpu.h"
++
++
++ #if !PX_DOXYGEN
++ namespace physx
++ {
++ #endif
++
++ #if PX_SUPPORT_GPU_PHYSX
++
++ /**
++ \brief Computes neighborhood information for a point cloud
++ */
++ class PxParticleNeighborhoodProvider
++ {
++ public:
++ /**
++ \brief Schedules the compuation of neighborhood information on the specified cuda stream
++
++ \param[in] deviceParticlePos A gpu pointer containing the particle positions
++ \param[in] numParticles The number of particles
++ \param[in] stream The stream on which the cuda call gets scheduled
++ \param[in] devicePhases An optional gpu pointer with particle phases
++ \param[in] validPhaseMask An optional phase mask to define which particles should be included into the neighborhood computation
++ \param[in] deviceActiveIndices An optional device pointer containing all indices of particles that are currently active
++ */
++ virtual void buildNeighborhood(PxVec4* deviceParticlePos, const PxU32 numParticles, CUstream stream, PxU32* devicePhases = NULL,
++ PxU32 validPhaseMask = PxParticlePhaseFlag::eParticlePhaseFluid, const PxU32* deviceActiveIndices = NULL) = 0;
++
++ /**
++ \brief Gets the maximal number of particles
++
++ \return The maximal number of particles
++ */
++ virtual PxU32 getMaxParticles() const = 0;
++
++ /**
++ \brief Sets the maximal number of particles
++
++ \param[in] maxParticles The maximal number of particles
++ */
++ virtual void setMaxParticles(PxU32 maxParticles) = 0;
++
++ /**
++ \brief Gets the maximal number of grid cells
++
++ \return The maximal number of grid cells
++ */
++ virtual PxU32 getMaxGridCells() const = 0;
++
++ /**
++ \brief Gets the cell size
++
++ \return The cell size
++ */
++ virtual PxReal getCellSize() const = 0;
++
++ /**
++ \brief Gets the number of grid cells in use
++
++ \return The number of grid cells in use
++ */
++ virtual PxU32 getNumGridCellsInUse() const = 0;
++
++ /**
++ \brief Sets the maximal number of particles
++
++ \param[in] maxGridCells The maximal number of grid cells
++ \param[in] cellSize The cell size. Should be equal to 2*contactOffset for PBD particle systems.
++ */
++ virtual void setCellProperties(PxU32 maxGridCells, PxReal cellSize) = 0;
++
++ /**
++ \brief Releases the instance and its data
++ */
++ virtual void release() = 0;
++
++ /**
++ \brief Destructor
++ */
++ virtual ~PxParticleNeighborhoodProvider() {}
++ };
++
++ #endif
++
++ #if !PX_DOXYGEN
++ } // namespace physx
++ #endif
++
++ #endif