usdrt::UsdPhysicsMaterialAPI

Defined in usdrt/scenegraph/usd/usdPhysics/materialAPI.h

class UsdPhysicsMaterialAPI : public usdrt::UsdAPISchemaBase 

Adds simulation material properties to a Material. All collisions that have a relationship to this material will have their collision response defined through this material.

Public Functions

inline explicit UsdPhysicsMaterialAPI(const UsdPrim &prim = UsdPrim()): Construct a UsdPhysicsMaterialAPI on UsdPrim prim. Equivalent to UsdPhysicsMaterialAPI::Get(prim.GetStage(), prim.GetPath()) for a valid prim , but will not immediately throw an error for an invalid prim.

inline explicit UsdPhysicsMaterialAPI(const UsdSchemaBase &schemaObj): Construct a UsdPhysicsMaterialAPI on the prim held by schemaObj . Should be preferred over UsdPhysicsMaterialAPI(schemaObj.GetPrim()), as it preserves SchemaBase state.

inline virtual ~UsdPhysicsMaterialAPI(): Destructor.

inline UsdAttribute GetDynamicFrictionAttr() const

Dynamic friction coefficient. Unitless.


Declaration	`float physics:dynamicFriction = 0`
C++ Type	float
Usd Type	SdfValueTypeNames->Float

inline UsdAttribute CreateDynamicFrictionAttr() const: See GetDynamicFrictionAttr(), and also Create vs Get Property Methods for when to use Get vs Create. If specified, author defaultValue as the attribute’s default, sparsely (when it makes sense to do so) if writeSparsely is true - the default for writeSparsely is false.

inline UsdAttribute GetStaticFrictionAttr() const

Static friction coefficient. Unitless.


Declaration	`float physics:staticFriction = 0`
C++ Type	float
Usd Type	SdfValueTypeNames->Float

inline UsdAttribute CreateStaticFrictionAttr() const: See GetStaticFrictionAttr(), and also Create vs Get Property Methods for when to use Get vs Create. If specified, author defaultValue as the attribute’s default, sparsely (when it makes sense to do so) if writeSparsely is true - the default for writeSparsely is false.

inline UsdAttribute GetRestitutionAttr() const

Restitution coefficient. Unitless.


Declaration	`float physics:restitution = 0`
C++ Type	float
Usd Type	SdfValueTypeNames->Float

inline UsdAttribute CreateRestitutionAttr() const: See GetRestitutionAttr(), and also Create vs Get Property Methods for when to use Get vs Create. If specified, author defaultValue as the attribute’s default, sparsely (when it makes sense to do so) if writeSparsely is true - the default for writeSparsely is false.

inline UsdAttribute GetDensityAttr() const

If non-zero, defines the density of the material. This can be used for body mass computation, see PhysicsMassAPI. Note that if the density is 0.0 it is ignored. Units: mass/distance/distance/distance.


Declaration	`float physics:density = 0`
C++ Type	float
Usd Type	SdfValueTypeNames->Float

inline UsdAttribute CreateDensityAttr() const: See GetDensityAttr(), and also Create vs Get Property Methods for when to use Get vs Create. If specified, author defaultValue as the attribute’s default, sparsely (when it makes sense to do so) if writeSparsely is true - the default for writeSparsely is false.

UsdPrim GetPrim() const: Return this schema object’s held prim.

SdfPath GetPath() const: Return the SdfPath to this schema object’s held prim.

inline explicit operator bool() const

Check if this schema object is compatible with it’s held prim and that the prim is valid.

A typed schema object is compatible if the held prim’s type is or is a subtype of the schema’s type. Based on prim.IsA().

An API schema object is compatible if the API is of type SingleApplyAPI or UsdSchemaType::MultipleApplyAPI, and the schema has been applied to the prim. Based on prim.HasAPI.

This method invokes polymorphic behaviour.

See also

UsdSchemaBase::_IsCompatible()

Returns: True if the help prim is valid, and the schema object is compatible with its held prim.

Public Static Functions

static inline UsdPhysicsMaterialAPI Apply(const UsdPrim &prim)

Applies this single-apply API schema to the given prim. This information is stored by adding “PhysicsMaterialAPI” to the token-valued, listOp metadata apiSchemas on the prim.

See also

UsdPrim::GetAppliedSchemas()

See also

UsdPrim::HasAPI()

See also

UsdPrim::ApplyAPI()

See also

UsdPrim::RemoveAPI()

Returns: A valid UsdPhysicsMaterialAPI object is returned upon success. An invalid (or empty) UsdPhysicsMaterialAPI object is returned upon failure. See UsdPrim::ApplyAPI() for conditions resulting in failure.

Public Static Attributes

static const UsdSchemaType schemaType = UsdSchemaType::SingleApplyAPI 

Compile time constant representing what kind of schema this class is.

See also

UsdSchemaType

Protected Functions

inline const TfToken &_GetInstanceName() const

Returns the instance name of the API schema object belonging to a multiple-apply API schema.

The returned instance name will be empty for non-applied and single-apply API schemas.

inline virtual bool _IsCompatible() const

Check whether this APISchema object is valid for the currently held prim.

If this is an applied API schema, this returns true if the held prim is valid and already has the API schema applied to it, along with the instanceName (in the case of multiple-apply). The instanceName should not be empty in the case of a multiple-apply API schema.

This check is performed when clients invoke the explicit bool conversion operator, implemented in UsdSchemaBase.

See also

UsdPrim::HasAPI()

inline const TfToken _GetType() const

Helper for subclasses to get this schema’s type token.

Note

This diverges from Usd and returns a TfToken, since we don’t implements TfType.

Returns: The token representing the schema’s TfType.