Chaos::FPBDPositionConstraints Class Reference

Constraint a single particle to a world-space position. More...

#include <PBDPositionConstraints.h>

Inheritance diagram for Chaos::FPBDPositionConstraints:

Public Types
using	Base = TPBDIndexedConstraintContainer< FPBDPositionConstraints >
using	FConstraintContainerHandle = FPBDPositionConstraintHandle
using	FConstraintHandleAllocator = TConstraintHandleAllocator< FPBDPositionConstraints >
using	FHandles = TArray< FConstraintContainerHandle * >
Public Types inherited from Chaos::TPBDIndexedConstraintContainer< FPBDPositionConstraints >
using	FConstaintContainerType = FPBDPositionConstraints

Public Member Functions
	FPBDPositionConstraints (const FReal InStiffness=(FReal) 1.)
	FPBDPositionConstraints (TArray< FVec3 > &&Locations, TArray< FPBDRigidParticleHandle * > &&InConstrainedParticles, const FReal InStiffness=(FReal) 1.)
virtual	~FPBDPositionConstraints ()
int32	NumConstraints () const
FConstraintContainerHandle *	AddConstraint (FPBDRigidParticleHandle *Particle, const FVec3 &Position)
void	RemoveConstraint (int ConstraintIndex)
void	DisableConstraints (const TSet< FGeometryParticleHandle * > &RemovedParticles)
FHandles &	GetConstraintHandles ()
const FHandles &	GetConstConstraintHandles () const
const FConstraintContainerHandle *	GetConstraintHandle (int32 ConstraintIndex) const
FConstraintContainerHandle *	GetConstraintHandle (int32 ConstraintIndex)
TVec2< FGeometryParticleHandle * >	GetConstrainedParticles (int32 ConstraintIndex) const
const FVec3 &	GetConstraintPosition (int ConstraintIndex) const
void	Replace (const int32 ConstraintIndex, const FVec3 &Position)
void	UpdatePositionBasedState (const FReal Dt)
virtual int32	GetNumConstraints () const override final
virtual void	ResetConstraints () override final
virtual void	AddConstraintsToGraph (Private::FPBDIslandManager &IslandManager) override final
virtual void	PrepareTick () override final
virtual void	UnprepareTick () override final
void	AddBodies (FSolverBodyContainer &SolverBodyContainer)
void	GatherInput (const FReal Dt)
void	ScatterOutput (const FReal Dt)
void	ApplyPositionConstraints (const FReal Dt, const int32 It, const int32 NumIts)
void	ApplyVelocityConstraints (const FReal Dt, const int32 It, const int32 NumIts)
void	ApplyProjectionConstraints (const FReal Dt, const int32 It, const int32 NumIts)
void	AddBodies (const TArrayView< int32 > &ConstraintIndices, FSolverBodyContainer &SolverBodyContainer)
void	GatherInput (const TArrayView< int32 > &ConstraintIndices, const FReal Dt)
void	ScatterOutput (const TArrayView< int32 > &ConstraintIndices, const FReal Dt)
void	ApplyPositionConstraints (const TArrayView< int32 > &ConstraintIndices, const FReal Dt, const int32 It, const int32 NumIts)
void	ApplyVelocityConstraints (const TArrayView< int32 > &ConstraintIndices, const FReal Dt, const int32 It, const int32 NumIts)
void	ApplyProjectionConstraints (const TArrayView< int32 > &ConstraintIndices, const FReal Dt, const int32 It, const int32 NumIts)
Public Member Functions inherited from Chaos::TPBDIndexedConstraintContainer< FPBDPositionConstraints >
	TPBDIndexedConstraintContainer (FConstraintHandleTypeID InType)
virtual TUniquePtr< FConstraintContainerSolver >	CreateSceneSolver (const int32 Priority) override final
virtual TUniquePtr< FConstraintContainerSolver >	CreateGroupSolver (const int32 Priority) override final
Public Member Functions inherited from Chaos::FPBDIndexedConstraintContainer
	FPBDIndexedConstraintContainer (FConstraintHandleTypeID InType)
virtual void	SetConstraintEnabled (int32 ConstraintIndex, bool bEnabled)
virtual bool	IsConstraintEnabled (int32 ConstraintIndex) const
Public Member Functions inherited from Chaos::FPBDConstraintContainer
CHAOS_API	FPBDConstraintContainer (FConstraintHandleTypeID InConstraintHandleType)
virtual CHAOS_API	~FPBDConstraintContainer ()
int32	GetContainerId () const
void	SetContainerId (int32 InContainerId)
const FConstraintHandleTypeID &	GetConstraintHandleType () const
virtual void	DisconnectConstraints (const TSet< TGeometryParticleHandle< FReal, 3 > * > &)
virtual void	OnDisableParticle (FGeometryParticleHandle *DisabledParticle)
virtual void	OnEnableParticle (FGeometryParticleHandle *EnabledParticle)

Additional Inherited Members
Protected Member Functions inherited from Chaos::FPBDIndexedConstraintContainer
int32	GetConstraintIndex (const FIndexedConstraintHandle *ConstraintHandle) const
void	SetConstraintIndex (FIndexedConstraintHandle *ConstraintHandle, int32 ConstraintIndex) const
Protected Attributes inherited from Chaos::FPBDConstraintContainer
FConstraintHandleTypeID	ConstraintHandleType
int32	ContainerId

Detailed Description

Constraint a single particle to a world-space position.

Member Typedef Documentation

Base

using Chaos::FPBDPositionConstraints::Base = TPBDIndexedConstraintContainer<FPBDPositionConstraints>

FConstraintContainerHandle

using Chaos::FPBDPositionConstraints::FConstraintContainerHandle = FPBDPositionConstraintHandle

FConstraintHandleAllocator

using Chaos::FPBDPositionConstraints::FConstraintHandleAllocator = TConstraintHandleAllocator<FPBDPositionConstraints>

FHandles

using Chaos::FPBDPositionConstraints::FHandles = TArray<FConstraintContainerHandle*>

Constructor & Destructor Documentation

FPBDPositionConstraints() [1/2]

Chaos::FPBDPositionConstraints::FPBDPositionConstraints ( const FReal  InStiffness = (FReal)1. )

inline

FPBDPositionConstraints() [2/2]

Chaos::FPBDPositionConstraints::FPBDPositionConstraints ( TArray< FVec3 > &&  Locations, TArray< FPBDRigidParticleHandle * > &&  InConstrainedParticles, const FReal  InStiffness = (FReal)1.  )

inline

~FPBDPositionConstraints()

virtual Chaos::FPBDPositionConstraints::~FPBDPositionConstraints ( )

inlinevirtual

Member Function Documentation

AddBodies() [1/2]

void Chaos::FPBDPositionConstraints::AddBodies	(	const TArrayView< int32 > &	ConstraintIndices,
		FSolverBodyContainer &	SolverBodyContainer
	)

AddBodies() [2/2]

void Chaos::FPBDPositionConstraints::AddBodies

(

FSolverBodyContainer &

SolverBodyContainer

)

AddConstraint()

FConstraintContainerHandle * Chaos::FPBDPositionConstraints::AddConstraint ( FPBDRigidParticleHandle *  Particle, const FVec3 &  Position  )

inline

Add a constraint.

AddConstraintsToGraph()

void Chaos::FPBDPositionConstraints::AddConstraintsToGraph ( Private::FPBDIslandManager &  IslandManager )

finaloverridevirtual

Add all the constraints in the container to the graph

Implements Chaos::FPBDConstraintContainer.

ApplyPositionConstraints() [1/2]

void Chaos::FPBDPositionConstraints::ApplyPositionConstraints	(	const FReal	Dt,
		const int32	It,
		const int32	NumIts
	)

ApplyPositionConstraints() [2/2]

void Chaos::FPBDPositionConstraints::ApplyPositionConstraints	(	const TArrayView< int32 > &	ConstraintIndices,
		const FReal	Dt,
		const int32	It,
		const int32	NumIts
	)

ApplyProjectionConstraints() [1/2]

void Chaos::FPBDPositionConstraints::ApplyProjectionConstraints ( const FReal  Dt, const int32  It, const int32  NumIts  )

inline

ApplyProjectionConstraints() [2/2]

void Chaos::FPBDPositionConstraints::ApplyProjectionConstraints ( const TArrayView< int32 > &  ConstraintIndices, const FReal  Dt, const int32  It, const int32  NumIts  )

inline

ApplyVelocityConstraints() [1/2]

void Chaos::FPBDPositionConstraints::ApplyVelocityConstraints ( const FReal  Dt, const int32  It, const int32  NumIts  )

inline

ApplyVelocityConstraints() [2/2]

void Chaos::FPBDPositionConstraints::ApplyVelocityConstraints ( const TArrayView< int32 > &  ConstraintIndices, const FReal  Dt, const int32  It, const int32  NumIts  )

inline

DisableConstraints()

void Chaos::FPBDPositionConstraints::DisableConstraints ( const TSet< FGeometryParticleHandle * > &  RemovedParticles )

inline

Disabled the specified constraint.

GatherInput() [1/2]

void Chaos::FPBDPositionConstraints::GatherInput ( const FReal  Dt )

inline

GatherInput() [2/2]

void Chaos::FPBDPositionConstraints::GatherInput ( const TArrayView< int32 > &  ConstraintIndices, const FReal  Dt  )

inline

GetConstConstraintHandles()

const FHandles & Chaos::FPBDPositionConstraints::GetConstConstraintHandles ( ) const

inline

GetConstrainedParticles()

TVec2< FGeometryParticleHandle * > Chaos::FPBDPositionConstraints::GetConstrainedParticles ( int32  ConstraintIndex ) const

inline

Get the particles that are affected by the specified constraint.

GetConstraintHandle() [1/2]

FConstraintContainerHandle * Chaos::FPBDPositionConstraints::GetConstraintHandle ( int32  ConstraintIndex )

inline

GetConstraintHandle() [2/2]

const FConstraintContainerHandle * Chaos::FPBDPositionConstraints::GetConstraintHandle ( int32  ConstraintIndex ) const

inline

GetConstraintHandles()

FHandles & Chaos::FPBDPositionConstraints::GetConstraintHandles ( )

inline

GetConstraintPosition()

const FVec3 & Chaos::FPBDPositionConstraints::GetConstraintPosition ( int  ConstraintIndex ) const

inline

Get the world-space constraint positions for each body.

GetNumConstraints()

virtual int32 Chaos::FPBDPositionConstraints::GetNumConstraints ( ) const

inlinefinaloverridevirtual

Get the number of constraints in this container (includes inactive and disabled)

Implements Chaos::FPBDConstraintContainer.

NumConstraints()

int32 Chaos::FPBDPositionConstraints::NumConstraints ( ) const

inline

Get the number of constraints.

PrepareTick()

virtual void Chaos::FPBDPositionConstraints::PrepareTick ( )

inlinefinaloverridevirtual

Called oncer per tick to initialize buffers required for the rest of the tick

Implements Chaos::FPBDConstraintContainer.

RemoveConstraint()

void Chaos::FPBDPositionConstraints::RemoveConstraint ( int  ConstraintIndex )

inline

Remove a constraint.

Replace()

void Chaos::FPBDPositionConstraints::Replace ( const int32  ConstraintIndex, const FVec3 &  Position  )

inline

ResetConstraints()

virtual void Chaos::FPBDPositionConstraints::ResetConstraints ( )

inlinefinaloverridevirtual

Empty the constraints (must be removed from the graph first, if required)

Implements Chaos::FPBDConstraintContainer.

ScatterOutput() [1/2]

void Chaos::FPBDPositionConstraints::ScatterOutput

(

const FReal

Dt

)

ScatterOutput() [2/2]

void Chaos::FPBDPositionConstraints::ScatterOutput	(	const TArrayView< int32 > &	ConstraintIndices,
		const FReal	Dt
	)

UnprepareTick()

virtual void Chaos::FPBDPositionConstraints::UnprepareTick ( )

inlinefinaloverridevirtual

Should undo any allocations in PrepareTick

Implements Chaos::FPBDConstraintContainer.

UpdatePositionBasedState()

void Chaos::FPBDPositionConstraints::UpdatePositionBasedState ( const FReal  Dt )

inlinevirtual

An opportunity to create/destroy constraints based on particle state.

Reimplemented from Chaos::FPBDConstraintContainer.

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

• Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/PBDPositionConstraints.h
• Engine/Source/Runtime/Experimental/Chaos/Private/Chaos/PBDPositionConstraints.cpp