#include <SoftBodySharedSettings.h>

Inheritance diagram for SoftBodySharedSettings:

Classes
struct	DihedralBend

struct	Edge
	An edge keeps two vertices at a constant distance using a spring: \|x1 - x2\| = rest length. More...

struct	Face
	A face defines the surface of the body. More...

class	InvBind
	An inverse bind matrix take a skinned vertex from its bind pose into joint local space. More...

class	LRA

class	OptimizationResults
	Information about the optimization of the soft body, the indices of certain elements may have changed. More...

struct	RodBendTwist
	A constraint that connects two Cosserat rods and limits bend and twist between the rods. More...

struct	RodStretchShear

class	Skinned
	A constraint that skins a vertex to joints and limits the distance that the simulated vertex can travel from this vertex. More...

class	SkinWeight
	A joint and its skin weight. More...

struct	Vertex
	A vertex is a particle, the data in this structure is only used during creation of the soft body and not during simulation. More...

struct	VertexAttributes

struct	Volume
	Volume constraint, keeps the volume of a tetrahedron constant. More...

Public Types
enum class	EBendType { None , Distance , Dihedral }
	Which type of bend constraint should be created. More...

enum class	ELRAType { None , EuclideanDistance , GeodesicDistance }
	The type of long range attachment constraint to create. More...

using	SharedSettingsToIDMap = StreamUtils::ObjectToIDMap<SoftBodySharedSettings>

using	IDToSharedSettingsMap = StreamUtils::IDToObjectMap<SoftBodySharedSettings>

using	MaterialToIDMap = StreamUtils::ObjectToIDMap<PhysicsMaterial>

using	IDToMaterialMap = StreamUtils::IDToObjectMap<PhysicsMaterial>

using	SettingsResult = Result<Ref<SoftBodySharedSettings>>

Public Member Functions
void	CreateConstraints (const VertexAttributes *inVertexAttributes, uint inVertexAttributesLength, EBendType inBendType=EBendType::Distance, float inAngleTolerance=DegreesToRadians(8.0f))

void	CalculateEdgeLengths ()
	Calculate the initial lengths of all springs of the edges of this soft body (if you use CreateConstraint, this is already done)

void	CalculateRodProperties ()

void	CalculateLRALengths (float inMaxDistanceMultiplier=1.0f)

void	CalculateBendConstraintConstants ()
	Calculate the constants for the bend constraints (if you use CreateConstraints, this is already done)

void	CalculateVolumeConstraintVolumes ()
	Calculates the initial volume of all tetrahedra of this soft body.

void	CalculateSkinnedConstraintNormals ()
	Calculate information needed to be able to calculate the skinned constraint normals at run-time.

void	Optimize (OptimizationResults &outResults)
	Optimize the soft body settings for simulation. This will reorder constraints so they can be executed in parallel.

void	Optimize ()
	Optimize the soft body settings without results.

Ref< SoftBodySharedSettings >	Clone () const
	Clone this object.

void	SaveBinaryState (StreamOut &inStream) const
	Saves the state of this object in binary form to inStream. Doesn't store the material list.

void	RestoreBinaryState (StreamIn &inStream)
	Restore the state of this object from inStream. Doesn't restore the material list.

void	SaveWithMaterials (StreamOut &inStream, SharedSettingsToIDMap &ioSettingsMap, MaterialToIDMap &ioMaterialMap) const
	Save this shared settings and its materials. Pass in an empty map ioSettingsMap / ioMaterialMap or reuse the same map while saving multiple settings objects to the same stream in order to avoid writing duplicates.

void	AddFace (const Face &inFace)
	Add a face to this soft body.

Public Member Functions inherited from RefTarget< SoftBodySharedSettings >
	RefTarget ()=default
	Constructor.

	RefTarget (const RefTarget &)

	~RefTarget ()
	assert no one is referencing us

void	SetEmbedded () const

RefTarget &	operator= (const RefTarget &)
	Assignment operator.

uint32	GetRefCount () const
	Get current refcount of this object.

void	AddRef () const
	Add or release a reference to this object.

void	Release () const

Static Public Member Functions
static SettingsResult	sRestoreWithMaterials (StreamIn &inStream, IDToSharedSettingsMap &ioSettingsMap, IDToMaterialMap &ioMaterialMap)
	Restore a shape and materials. Pass in an empty map in ioSettingsMap / ioMaterialMap or reuse the same map while reading multiple settings objects from the same stream in order to restore duplicates.

static Ref< SoftBodySharedSettings >	sCreateCube (uint inGridSize, float inGridSpacing)

Static Public Member Functions inherited from RefTarget< SoftBodySharedSettings >
static int	sInternalGetRefCountOffset ()
	INTERNAL HELPER FUNCTION USED BY SERIALIZATION.

Public Attributes
Array< Vertex >	mVertices
	The list of vertices or particles of the body.

Array< Face >	mFaces
	The list of faces of the body.

Array< Edge >	mEdgeConstraints
	The list of edges or springs of the body.

Array< DihedralBend >	mDihedralBendConstraints
	The list of dihedral bend constraints of the body.

Array< Volume >	mVolumeConstraints
	The list of volume constraints of the body that keep the volume of tetrahedra in the soft body constant.

Array< Skinned >	mSkinnedConstraints
	The list of vertices that are constrained to a skinned vertex.

Array< InvBind >	mInvBindMatrices
	The list of inverse bind matrices for skinning vertices.

Array< LRA >	mLRAConstraints
	The list of long range attachment constraints.

Array< RodStretchShear >	mRodStretchShearConstraints
	The list of Cosserat rod constraints that connect two vertices and that limit stretch and shear.

Array< RodBendTwist >	mRodBendTwistConstraints
	The list of Cosserat rod constraints that connect two rods and limit the bend and twist.

PhysicsMaterialList	mMaterials { PhysicsMaterial::sDefault }
	The materials of the faces of the body, referenced by Face::mMaterialIndex.

Friends
class	SoftBodyMotionProperties

Additional Inherited Members
Protected Attributes inherited from RefTarget< SoftBodySharedSettings >
atomic< uint32 >	mRefCount
	Current reference count.

Static Protected Attributes inherited from RefTarget< SoftBodySharedSettings >
static constexpr uint32	cEmbedded
	A large value that gets added to the refcount to mark the object as embedded.

Detailed Description

This class defines the setup of all particles and their constraints. It is used during the simulation and can be shared between multiple soft bodies.

Member Typedef Documentation

◆ IDToMaterialMap

using SoftBodySharedSettings::IDToMaterialMap = StreamUtils::IDToObjectMap<PhysicsMaterial>

◆ IDToSharedSettingsMap

using SoftBodySharedSettings::IDToSharedSettingsMap = StreamUtils::IDToObjectMap<SoftBodySharedSettings>

◆ MaterialToIDMap

using SoftBodySharedSettings::MaterialToIDMap = StreamUtils::ObjectToIDMap<PhysicsMaterial>

◆ SettingsResult

using SoftBodySharedSettings::SettingsResult = Result<Ref<SoftBodySharedSettings>>

◆ SharedSettingsToIDMap

using SoftBodySharedSettings::SharedSettingsToIDMap = StreamUtils::ObjectToIDMap<SoftBodySharedSettings>

Member Enumeration Documentation

◆ EBendType

enum class SoftBodySharedSettings::EBendType

strong

Which type of bend constraint should be created.

Enumerator
None	No bend constraints will be created.
Distance	A simple distance constraint.
Dihedral	A dihedral bend constraint (most expensive, but also supports triangles that are initially not in the same plane)

◆ ELRAType

enum class SoftBodySharedSettings::ELRAType

strong

The type of long range attachment constraint to create.

Enumerator
None	Don't create a LRA constraint.
EuclideanDistance	Create a LRA constraint based on Euclidean distance between the closest kinematic vertex and this vertex.
GeodesicDistance	Create a LRA constraint based on the geodesic distance between the closest kinematic vertex and this vertex (follows the edge constraints)

Member Function Documentation

◆ AddFace()

void SoftBodySharedSettings::AddFace ( const Face & inFace )

inline

Add a face to this soft body.

◆ CalculateBendConstraintConstants()

void SoftBodySharedSettings::CalculateBendConstraintConstants ( )

Calculate the constants for the bend constraints (if you use CreateConstraints, this is already done)

◆ CalculateEdgeLengths()

void SoftBodySharedSettings::CalculateEdgeLengths ( )

Calculate the initial lengths of all springs of the edges of this soft body (if you use CreateConstraint, this is already done)

◆ CalculateLRALengths()

void SoftBodySharedSettings::CalculateLRALengths ( float inMaxDistanceMultiplier = 1.0f )

Calculate the max lengths for the long range attachment constraints based on Euclidean distance (if you use CreateConstraints, this is already done)

Parameters

inMaxDistanceMultiplier Multiplier for the max distance of the LRA constraint, e.g. 1.01 means the max distance is 1% longer than the calculated distance in the rest pose.

◆ CalculateRodProperties()

void SoftBodySharedSettings::CalculateRodProperties ( )

Calculate the properties of the rods Note that this can swap mVertex of the RodStretchShear constraints if two rods are connected through a RodBendTwist constraint but point in opposite directions.

◆ CalculateSkinnedConstraintNormals()

void SoftBodySharedSettings::CalculateSkinnedConstraintNormals ( )

Calculate information needed to be able to calculate the skinned constraint normals at run-time.

◆ CalculateVolumeConstraintVolumes()

void SoftBodySharedSettings::CalculateVolumeConstraintVolumes ( )

Calculates the initial volume of all tetrahedra of this soft body.

◆ Clone()

Ref< SoftBodySharedSettings > SoftBodySharedSettings::Clone ( ) const

Clone this object.

◆ CreateConstraints()

void SoftBodySharedSettings::CreateConstraints	(	const VertexAttributes *	inVertexAttributes,
		uint	inVertexAttributesLength,
		EBendType	inBendType = EBendType::Distance,
		float	inAngleTolerance = DegreesToRadians(8.0f) )

Automatically create constraints based on the faces of the soft body

Parameters

inVertexAttributes	A list of attributes for each vertex (1-on-1 with mVertices, note that if the list is smaller than mVertices the last element will be repeated). This defines the properties of the constraints that are created.
inVertexAttributesLength	The length of inVertexAttributes
inBendType	The type of bend constraint to create
inAngleTolerance	Shear edges are created when two connected triangles form a quad (are roughly in the same plane and form a square with roughly 90 degree angles). This defines the tolerance (in radians).

◆ Optimize() [1/2]

void SoftBodySharedSettings::Optimize ( )

inline

Optimize the soft body settings without results.

◆ Optimize() [2/2]

void SoftBodySharedSettings::Optimize ( OptimizationResults & outResults )

Optimize the soft body settings for simulation. This will reorder constraints so they can be executed in parallel.

◆ RestoreBinaryState()

void SoftBodySharedSettings::RestoreBinaryState ( StreamIn & inStream )

Restore the state of this object from inStream. Doesn't restore the material list.

◆ SaveBinaryState()

void SoftBodySharedSettings::SaveBinaryState ( StreamOut & inStream ) const

Saves the state of this object in binary form to inStream. Doesn't store the material list.

◆ SaveWithMaterials()

void SoftBodySharedSettings::SaveWithMaterials	(	StreamOut &	inStream,
		SharedSettingsToIDMap &	ioSettingsMap,
		MaterialToIDMap &	ioMaterialMap ) const

Save this shared settings and its materials. Pass in an empty map ioSettingsMap / ioMaterialMap or reuse the same map while saving multiple settings objects to the same stream in order to avoid writing duplicates.

◆ sCreateCube()

Ref< SoftBodySharedSettings > SoftBodySharedSettings::sCreateCube	(	uint	inGridSize,
		float	inGridSpacing )

static

Create a cube. This can be used to create a simple soft body for testing purposes. It will contain edge constraints, volume constraints and faces.

Parameters

inGridSize	Number of points along each axis
inGridSpacing	Distance between points

◆ sRestoreWithMaterials()

SoftBodySharedSettings::SettingsResult SoftBodySharedSettings::sRestoreWithMaterials	(	StreamIn &	inStream,
		IDToSharedSettingsMap &	ioSettingsMap,
		IDToMaterialMap &	ioMaterialMap )

static

Restore a shape and materials. Pass in an empty map in ioSettingsMap / ioMaterialMap or reuse the same map while reading multiple settings objects from the same stream in order to restore duplicates.

Friends And Related Symbol Documentation

◆ SoftBodyMotionProperties

friend class SoftBodyMotionProperties

friend

Member Data Documentation

◆ mDihedralBendConstraints

Array<DihedralBend> SoftBodySharedSettings::mDihedralBendConstraints

The list of dihedral bend constraints of the body.

◆ mEdgeConstraints

Array<Edge> SoftBodySharedSettings::mEdgeConstraints

The list of edges or springs of the body.

◆ mFaces

Array<Face> SoftBodySharedSettings::mFaces

The list of faces of the body.

◆ mInvBindMatrices

Array<InvBind> SoftBodySharedSettings::mInvBindMatrices

The list of inverse bind matrices for skinning vertices.

◆ mLRAConstraints

Array<LRA> SoftBodySharedSettings::mLRAConstraints

The list of long range attachment constraints.

◆ mMaterials

PhysicsMaterialList SoftBodySharedSettings::mMaterials { PhysicsMaterial::sDefault }

The materials of the faces of the body, referenced by Face::mMaterialIndex.

◆ mRodBendTwistConstraints

Array<RodBendTwist> SoftBodySharedSettings::mRodBendTwistConstraints

The list of Cosserat rod constraints that connect two rods and limit the bend and twist.

◆ mRodStretchShearConstraints

Array<RodStretchShear> SoftBodySharedSettings::mRodStretchShearConstraints

The list of Cosserat rod constraints that connect two vertices and that limit stretch and shear.

◆ mSkinnedConstraints

Array<Skinned> SoftBodySharedSettings::mSkinnedConstraints

The list of vertices that are constrained to a skinned vertex.

◆ mVertices

Array<Vertex> SoftBodySharedSettings::mVertices

The list of vertices or particles of the body.

◆ mVolumeConstraints

Array<Volume> SoftBodySharedSettings::mVolumeConstraints

The list of volume constraints of the body that keep the volume of tetrahedra in the soft body constant.

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

Jolt/Physics/SoftBody/SoftBodySharedSettings.h
Jolt/Physics/SoftBody/SoftBodySharedSettings.cpp

Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Friends

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ IDToMaterialMap

◆ IDToSharedSettingsMap

◆ MaterialToIDMap

◆ SettingsResult

◆ SharedSettingsToIDMap

Member Enumeration Documentation

◆ EBendType

◆ ELRAType

Member Function Documentation

◆ AddFace()

◆ CalculateBendConstraintConstants()

◆ CalculateEdgeLengths()

◆ CalculateLRALengths()

◆ CalculateRodProperties()

◆ CalculateSkinnedConstraintNormals()

◆ CalculateVolumeConstraintVolumes()

◆ Clone()

◆ CreateConstraints()

◆ Optimize() [1/2]

◆ Optimize() [2/2]

◆ RestoreBinaryState()

◆ SaveBinaryState()

◆ SaveWithMaterials()

◆ sCreateCube()

◆ sRestoreWithMaterials()

Friends And Related Symbol Documentation

◆ SoftBodyMotionProperties

Member Data Documentation

◆ mDihedralBendConstraints

◆ mEdgeConstraints

◆ mFaces

◆ mInvBindMatrices

◆ mLRAConstraints

◆ mMaterials

◆ mRodBendTwistConstraints

◆ mRodStretchShearConstraints

◆ mSkinnedConstraints

◆ mVertices

◆ mVolumeConstraints