N-D material point method particle and grid state. More...

#include <Core/Particle/MPM/MPMSystemData.hpp>

Inheritance diagram for CubbyFlow::MPMSystemData< N >:

Public Types
using	Base = ParticleSystemData< N >

using	DeformationState = SnowDeformationState< N >

Public Types inherited from CubbyFlow::ParticleSystemData< N >
using	ScalarData = Array1< double >
	Scalar data chunk.

using	VectorData = Array1< Vector< double, N > >
	Vector data chunk.

Public Member Functions
	MPMSystemData (const Vector< size_t, N > &resolution=Vector< size_t, N >::MakeConstant(1), const Vector< double, N > &gridSpacing=Vector< double, N >::MakeConstant(1.0), const Vector< double, N > &gridOrigin=Vector< double, N >{}, size_t numberOfParticles=0)
	Constructs MPM state with a vertex-centered background grid.

void	Resize (size_t newNumberOfParticles) override
	Resizes particle state, initializing new MPM attributes.

void	Deserialize (const std::vector< uint8_t > &buffer) override
	Deserializes inherited particle state and resets MPM-specific state.

void	Set (const ParticleSystemData< N > &other) override
	Copies inherited particle state and resets MPM-specific state.

void	ResizeGrid (const Vector< size_t, N > &resolution, const Vector< double, N > &gridSpacing, const Vector< double, N > &gridOrigin)
	Resizes the background grid without changing particle state.

ConstArrayView1< double >	ParticleMasses () const
	Returns per-particle masses.

ArrayView1< double >	ParticleMasses ()
	Returns per-particle masses.

ConstArrayView1< double >	InitialVolumes () const
	Returns per-particle initial volumes.

ArrayView1< double >	InitialVolumes ()
	Returns per-particle initial volumes.

ConstArrayView1< DeformationState >	DeformationStates () const
	Returns per-particle deformation states.

ArrayView1< DeformationState >	DeformationStates ()
	Returns per-particle deformation states.

const VertexCenteredScalarGrid< N > &	GridMass () const
	Returns grid mass.

VertexCenteredScalarGrid< N > &	GridMass ()
	Returns grid mass.

const VertexCenteredVectorGrid< N > &	GridVelocities () const
	Returns current grid velocities.

VertexCenteredVectorGrid< N > &	GridVelocities ()
	Returns current grid velocities.

const VertexCenteredVectorGrid< N > &	GridVelocitiesBeforeUpdate () const
	Returns grid velocities before the grid update.

VertexCenteredVectorGrid< N > &	GridVelocitiesBeforeUpdate ()
	Returns grid velocities before the grid update.

double	FLIPBlendingFactor () const
	Returns the FLIP fraction used for grid-to-particle transfer.

void	SetFLIPBlendingFactor (double factor)
	Sets the FLIP fraction used for grid-to-particle transfer.

void	TransferFromParticlesToGrid ()

void	TransferFromGridToParticles ()

Public Member Functions inherited from CubbyFlow::ParticleSystemData< N >
	ParticleSystemData ()
	Default constructor.

	ParticleSystemData (size_t numberOfParticles)
	Constructs particle system data with given number of particles.

	~ParticleSystemData () override=default
	Default virtual destructor.

	ParticleSystemData (const ParticleSystemData &other)
	Copy constructor.

	ParticleSystemData (ParticleSystemData &&other) noexcept
	Move constructor.

ParticleSystemData &	operator= (const ParticleSystemData &other)
	Copy assignment operator.

ParticleSystemData &	operator= (ParticleSystemData &&other) noexcept
	Move assignment operator.

size_t	NumberOfParticles () const
	Returns the number of particles.

size_t	AddScalarData (double initialVal=0.0)
	Adds a scalar data layer and returns its index.

size_t	AddVectorData (const Vector< double, N > &initialVal=Vector< double, N >{})
	Adds a vector data layer and returns its index.

double	Radius () const
	Returns the radius of the particles.

virtual void	SetRadius (double newRadius)
	Sets the radius of the particles.

double	Mass () const
	Returns the mass of the particles.

virtual void	SetMass (double newMass)
	Sets the mass of the particles.

ConstArrayView1< Vector< double, N > >	Positions () const
	Returns the position array (immutable).

ArrayView1< Vector< double, N > >	Positions ()
	Returns the position array (mutable).

ConstArrayView1< Vector< double, N > >	Velocities () const
	Returns the velocity array (immutable).

ArrayView1< Vector< double, N > >	Velocities ()
	Returns the velocity array (mutable).

ConstArrayView1< Vector< double, N > >	Forces () const
	Returns the force array (immutable).

ArrayView1< Vector< double, N > >	Forces ()
	Returns the force array (mutable).

ConstArrayView1< double >	ScalarDataAt (size_t idx) const
	Returns custom scalar data layer at given index (immutable).

ArrayView1< double >	ScalarDataAt (size_t idx)
	Returns custom scalar data layer at given index (mutable).

ConstArrayView1< Vector< double, N > >	VectorDataAt (size_t idx) const
	Returns custom vector data layer at given index (immutable).

ArrayView1< Vector< double, N > >	VectorDataAt (size_t idx)
	Returns custom vector data layer at given index (mutable).

void	AddParticle (const Vector< double, N > &newPosition, const Vector< double, N > &newVelocity=Vector< double, N >(), const Vector< double, N > &newForce=Vector< double, N >())
	Adds a particle to the data structure.

void	AddParticles (const ConstArrayView1< Vector< double, N > > &newPositions, const ConstArrayView1< Vector< double, N > > &newVelocities=ConstArrayView1< Vector< double, N > >(), const ConstArrayView1< Vector< double, N > > &newForces=ConstArrayView1< Vector< double, N > >())
	Adds particles to the data structure.

const std::shared_ptr< PointNeighborSearcher< N > > &	NeighborSearcher () const
	Returns neighbor searcher.

void	SetNeighborSearcher (const std::shared_ptr< PointNeighborSearcher< N > > &newNeighborSearcher)
	Sets neighbor searcher.

const Array1< Array1< size_t > > &	NeighborLists () const
	Returns neighbor lists.

void	BuildNeighborSearcher (double maxSearchRadius)
	Builds neighbor searcher with given search radius.

void	BuildNeighborLists (double maxSearchRadius)
	Builds neighbor lists with given search radius.

void	Serialize (std::vector< uint8_t > *buffer) const override
	Serializes this particle system data to the buffer.

void	Deserialize (const std::vector< uint8_t > &buffer) override
	Deserializes this particle system data from the buffer.

Public Member Functions inherited from CubbyFlow::Serializable
	Serializable ()=default
	Default constructor.

	Serializable (const Serializable &)=default
	Default copy constructor.

	Serializable (Serializable &&) noexcept=default
	Default move constructor.

virtual	~Serializable ()=default
	Default virtual destructor.

Serializable &	operator= (const Serializable &)=default
	Default copy assignment operator.

Serializable &	operator= (Serializable &&) noexcept=default
	Default move assignment operator.

Additional Inherited Members
Static Protected Member Functions inherited from CubbyFlow::ParticleSystemData< N >
template<size_t M = N>
static std::enable_if_t< M==2, void >	Serialize (const ParticleSystemData< 2 > &particles, flatbuffers::FlatBufferBuilder builder, flatbuffers::Offset< fbs::ParticleSystemData2 > fbsParticleSystemData)

template<size_t M = N>
static std::enable_if_t< M==3, void >	Serialize (const ParticleSystemData< 3 > &particles, flatbuffers::FlatBufferBuilder builder, flatbuffers::Offset< fbs::ParticleSystemData3 > fbsParticleSystemData)

template<size_t M = N>
static std::enable_if_t< M==2, void >	Deserialize (const fbs::ParticleSystemData2 *fbsParticleSystemData, ParticleSystemData< 2 > &particles)

template<size_t M = N>
static std::enable_if_t< M==3, void >	Deserialize (const fbs::ParticleSystemData3 *fbsParticleSystemData, ParticleSystemData< 3 > &particles)

Detailed Description

template<size_t N>
class CubbyFlow::MPMSystemData< N >

N-D material point method particle and grid state.

Note: Serialization preserves only the inherited particle-system state; MPM-specific particle and grid state is reset after deserialization.

Member Typedef Documentation

◆ Base

template<size_t N>

using CubbyFlow::MPMSystemData< N >::Base = ParticleSystemData<N>

◆ DeformationState

template<size_t N>

using CubbyFlow::MPMSystemData< N >::DeformationState = SnowDeformationState<N>

Constructor & Destructor Documentation

◆ MPMSystemData()

template<size_t N>

CubbyFlow::MPMSystemData< N >::MPMSystemData	(	const Vector< size_t, N > &	resolution = `Vector<size_t, N>::MakeConstant(1)`,
		const Vector< double, N > &	gridSpacing = `Vector<double, N>::MakeConstant(1.0)`,
		const Vector< double, N > &	gridOrigin = `Vector<double, N>{}`,
		size_t	numberOfParticles = `0`
	)

explicit

Constructs MPM state with a vertex-centered background grid.

Member Function Documentation

◆ DeformationStates() [1/2]

template<size_t N>

ArrayView1< typename MPMSystemData< N >::DeformationState > CubbyFlow::MPMSystemData< N >::DeformationStates ( )

Returns per-particle deformation states.

◆ DeformationStates() [2/2]

template<size_t N>

ConstArrayView1< typename MPMSystemData< N >::DeformationState > CubbyFlow::MPMSystemData< N >::DeformationStates ( ) const

Returns per-particle deformation states.

◆ Deserialize()

template<size_t N>

void CubbyFlow::MPMSystemData< N >::Deserialize ( const std::vector< uint8_t > & buffer )

overridevirtual

Deserializes inherited particle state and resets MPM-specific state.

Implements CubbyFlow::Serializable.

◆ FLIPBlendingFactor()

template<size_t N>

double CubbyFlow::MPMSystemData< N >::FLIPBlendingFactor ( ) const

Returns the FLIP fraction used for grid-to-particle transfer.

◆ GridMass() [1/2]

template<size_t N>

VertexCenteredScalarGrid< N > & CubbyFlow::MPMSystemData< N >::GridMass ( )

Returns grid mass.

◆ GridMass() [2/2]

template<size_t N>

const VertexCenteredScalarGrid< N > & CubbyFlow::MPMSystemData< N >::GridMass ( ) const

Returns grid mass.

◆ GridVelocities() [1/2]

template<size_t N>

VertexCenteredVectorGrid< N > & CubbyFlow::MPMSystemData< N >::GridVelocities ( )

Returns current grid velocities.

◆ GridVelocities() [2/2]

template<size_t N>

const VertexCenteredVectorGrid< N > & CubbyFlow::MPMSystemData< N >::GridVelocities ( ) const

Returns current grid velocities.

◆ GridVelocitiesBeforeUpdate() [1/2]

template<size_t N>

VertexCenteredVectorGrid< N > & CubbyFlow::MPMSystemData< N >::GridVelocitiesBeforeUpdate ( )

Returns grid velocities before the grid update.

◆ GridVelocitiesBeforeUpdate() [2/2]

template<size_t N>

const VertexCenteredVectorGrid< N > & CubbyFlow::MPMSystemData< N >::GridVelocitiesBeforeUpdate ( ) const

Returns grid velocities before the grid update.

◆ InitialVolumes() [1/2]

template<size_t N>

ArrayView1< double > CubbyFlow::MPMSystemData< N >::InitialVolumes ( )

Returns per-particle initial volumes.

◆ InitialVolumes() [2/2]

template<size_t N>

ConstArrayView1< double > CubbyFlow::MPMSystemData< N >::InitialVolumes ( ) const

Returns per-particle initial volumes.

◆ ParticleMasses() [1/2]

template<size_t N>

ArrayView1< double > CubbyFlow::MPMSystemData< N >::ParticleMasses ( )

Returns per-particle masses.

◆ ParticleMasses() [2/2]

template<size_t N>

ConstArrayView1< double > CubbyFlow::MPMSystemData< N >::ParticleMasses ( ) const

Returns per-particle masses.

◆ Resize()

template<size_t N>

void CubbyFlow::MPMSystemData< N >::Resize ( size_t newNumberOfParticles )

overridevirtual

Resizes particle state, initializing new MPM attributes.

Reimplemented from CubbyFlow::ParticleSystemData< N >.

◆ ResizeGrid()

template<size_t N>

void CubbyFlow::MPMSystemData< N >::ResizeGrid	(	const Vector< size_t, N > &	resolution,
		const Vector< double, N > &	gridSpacing,
		const Vector< double, N > &	gridOrigin
	)

Resizes the background grid without changing particle state.

◆ Set()

template<size_t N>

void CubbyFlow::MPMSystemData< N >::Set ( const ParticleSystemData< N > & other )

overridevirtual

Copies inherited particle state and resets MPM-specific state.

Reimplemented from CubbyFlow::ParticleSystemData< N >.

◆ SetFLIPBlendingFactor()

template<size_t N>

void CubbyFlow::MPMSystemData< N >::SetFLIPBlendingFactor ( double factor )

Sets the FLIP fraction used for grid-to-particle transfer.

◆ TransferFromGridToParticles()

template<size_t N>

void CubbyFlow::MPMSystemData< N >::TransferFromGridToParticles ( )

Transfers updated background-grid velocities to particles. Stencil nodes outside the finite grid are clamped to its boundary.

◆ TransferFromParticlesToGrid()

template<size_t N>

void CubbyFlow::MPMSystemData< N >::TransferFromParticlesToGrid ( )

Transfers particle mass and momentum to the background grid. Stencil nodes outside the finite grid are clamped to its boundary.

The documentation for this class was generated from the following files:

Core/Particle/MPM/MPMSystemData.hpp
Core/Particle/MPM/MPMSystemData-Impl.hpp

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Base

◆ DeformationState

Constructor & Destructor Documentation

◆ MPMSystemData()

Member Function Documentation

◆ DeformationStates() [1/2]

◆ DeformationStates() [2/2]

◆ Deserialize()

◆ FLIPBlendingFactor()

◆ GridMass() [1/2]

◆ GridMass() [2/2]

◆ GridVelocities() [1/2]

◆ GridVelocities() [2/2]

◆ GridVelocitiesBeforeUpdate() [1/2]

◆ GridVelocitiesBeforeUpdate() [2/2]

◆ InitialVolumes() [1/2]

◆ InitialVolumes() [2/2]

◆ ParticleMasses() [1/2]

◆ ParticleMasses() [2/2]

◆ Resize()

◆ ResizeGrid()

◆ Set()

◆ SetFLIPBlendingFactor()

◆ TransferFromGridToParticles()

◆ TransferFromParticlesToGrid()