HDK
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#include <points.h>
Static Public Member Functions | |
static USDGEOM_API const TfTokenVector & | GetSchemaAttributeNames (bool includeInherited=true) |
static USDGEOM_API UsdGeomPoints | Get (const UsdStagePtr &stage, const SdfPath &path) |
static USDGEOM_API UsdGeomPoints | Define (const UsdStagePtr &stage, const SdfPath &path) |
static USDGEOM_API bool | ComputeExtent (const VtVec3fArray &points, const VtFloatArray &widths, VtVec3fArray *extent) |
static USDGEOM_API bool | ComputeExtent (const VtVec3fArray &points, const VtFloatArray &widths, const GfMatrix4d &transform, VtVec3fArray *extent) |
Static Public Member Functions inherited from UsdGeomPointBased | |
static USDGEOM_API const TfTokenVector & | GetSchemaAttributeNames (bool includeInherited=true) |
static USDGEOM_API UsdGeomPointBased | Get (const UsdStagePtr &stage, const SdfPath &path) |
static USDGEOM_API bool | ComputeExtent (const VtVec3fArray &points, VtVec3fArray *extent) |
static USDGEOM_API bool | ComputeExtent (const VtVec3fArray &points, const GfMatrix4d &transform, VtVec3fArray *extent) |
static USDGEOM_API bool | ComputePointsAtTime (VtArray< GfVec3f > *points, UsdStageWeakPtr &stage, UsdTimeCode time, const VtVec3fArray &positions, const VtVec3fArray &velocities, UsdTimeCode velocitiesSampleTime, const VtVec3fArray &accelerations, float velocityScale=1.0) |
Static Public Member Functions inherited from UsdGeomGprim | |
static USDGEOM_API const TfTokenVector & | GetSchemaAttributeNames (bool includeInherited=true) |
static USDGEOM_API UsdGeomGprim | Get (const UsdStagePtr &stage, const SdfPath &path) |
Static Public Member Functions inherited from UsdGeomBoundable | |
static USDGEOM_API const TfTokenVector & | GetSchemaAttributeNames (bool includeInherited=true) |
static USDGEOM_API UsdGeomBoundable | Get (const UsdStagePtr &stage, const SdfPath &path) |
static USDGEOM_API bool | ComputeExtentFromPlugins (const UsdGeomBoundable &boundable, const UsdTimeCode &time, VtVec3fArray *extent) |
static USDGEOM_API bool | ComputeExtentFromPlugins (const UsdGeomBoundable &boundable, const UsdTimeCode &time, const GfMatrix4d &transform, VtVec3fArray *extent) |
Static Public Member Functions inherited from UsdGeomXformable | |
static USDGEOM_API const TfTokenVector & | GetSchemaAttributeNames (bool includeInherited=true) |
static USDGEOM_API UsdGeomXformable | Get (const UsdStagePtr &stage, const SdfPath &path) |
static USDGEOM_API bool | GetTimeSamples (std::vector< UsdGeomXformOp > const &orderedXformOps, std::vector< double > *times) |
static USDGEOM_API bool | GetTimeSamplesInInterval (std::vector< UsdGeomXformOp > const &orderedXformOps, const GfInterval &interval, std::vector< double > *times) |
static USDGEOM_API bool | GetLocalTransformation (GfMatrix4d *transform, std::vector< UsdGeomXformOp > const &ops, const UsdTimeCode time) |
static USDGEOM_API bool | IsTransformationAffectedByAttrNamed (const TfToken &attrName) |
Static Public Member Functions inherited from UsdGeomImageable | |
static USDGEOM_API const TfTokenVector & | GetSchemaAttributeNames (bool includeInherited=true) |
static USDGEOM_API UsdGeomImageable | Get (const UsdStagePtr &stage, const SdfPath &path) |
static USDGEOM_API const TfTokenVector & | GetOrderedPurposeTokens () |
Static Public Member Functions inherited from UsdTyped | |
static USD_API const TfTokenVector & | GetSchemaAttributeNames (bool includeInherited=true) |
static USD_API UsdTyped | Get (const UsdStagePtr &stage, const SdfPath &path) |
Static Public Member Functions inherited from UsdSchemaBase | |
static const TfTokenVector & | GetSchemaAttributeNames (bool includeInherited=true) |
Static Public Attributes | |
static const UsdSchemaKind | schemaKind = UsdSchemaKind::ConcreteTyped |
Static Public Attributes inherited from UsdGeomPointBased | |
static const UsdSchemaKind | schemaKind = UsdSchemaKind::AbstractTyped |
Static Public Attributes inherited from UsdGeomGprim | |
static const UsdSchemaKind | schemaKind = UsdSchemaKind::AbstractTyped |
Static Public Attributes inherited from UsdGeomBoundable | |
static const UsdSchemaKind | schemaKind = UsdSchemaKind::AbstractTyped |
Static Public Attributes inherited from UsdGeomXformable | |
static const UsdSchemaKind | schemaKind = UsdSchemaKind::AbstractTyped |
Static Public Attributes inherited from UsdGeomImageable | |
static const UsdSchemaKind | schemaKind = UsdSchemaKind::AbstractTyped |
Static Public Attributes inherited from UsdTyped | |
static const UsdSchemaKind | schemaKind = UsdSchemaKind::AbstractBase |
Static Public Attributes inherited from UsdSchemaBase | |
static const UsdSchemaKind | schemaKind = UsdSchemaKind::AbstractBase |
Protected Member Functions | |
USDGEOM_API UsdSchemaKind | _GetSchemaKind () const override |
Protected Member Functions inherited from UsdGeomXformable | |
USDGEOM_API UsdSchemaKind | _GetSchemaKind () const override |
Protected Member Functions inherited from UsdTyped | |
USD_API bool | _IsCompatible () const override |
Protected Member Functions inherited from UsdSchemaBase | |
virtual UsdSchemaKind | _GetSchemaType () const |
const TfType & | _GetType () const |
USD_API UsdAttribute | _CreateAttr (TfToken const &attrName, SdfValueTypeName const &typeName, bool custom, SdfVariability variability, VtValue const &defaultValue, bool writeSparsely) const |
Friends | |
class | UsdSchemaRegistry |
Points are analogous to the RiPoints spec.
Points can be an efficient means of storing and rendering particle effects comprised of thousands or millions of small particles. Points generally receive a single shading sample each, which should take normals into account, if present.
While not technically UsdGeomPrimvars, the widths and normals also have interpolation metadata. It's common for authored widths and normals to have constant or varying interpolation.
Construct a UsdGeomPoints on UsdPrim prim
. Equivalent to UsdGeomPoints::Get(prim.GetStage(), prim.GetPath()) for a valid prim
, but will not immediately throw an error for an invalid prim
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inlineexplicit |
Construct a UsdGeomPoints on the prim held by schemaObj
. Should be preferred over UsdGeomPoints(schemaObj.GetPrim()), as it preserves SchemaBase state.
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virtual |
Destructor.
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overrideprotectedvirtual |
Returns the kind of schema this class belongs to.
Reimplemented from UsdGeomPointBased.
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Compute the extent for the point cloud defined by points and widths.
On success, extent will contain the axis-aligned bounding box of the point cloud defined by points with the given widths.
This function is to provide easy authoring of extent for usd authoring tools, hence it is static and acts outside a specific prim (as in attribute based methods).
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static |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Computes the extent as if the matrix transform
was first applied.
USDGEOM_API UsdAttribute UsdGeomPoints::CreateIdsAttr | ( | VtValue const & | defaultValue = VtValue() , |
bool | writeSparsely = false |
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) | const |
See GetIdsAttr(), and also Usd_Create_Or_Get_Property 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
.
USDGEOM_API UsdAttribute UsdGeomPoints::CreateWidthsAttr | ( | VtValue const & | defaultValue = VtValue() , |
bool | writeSparsely = false |
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) | const |
See GetWidthsAttr(), and also Usd_Create_Or_Get_Property 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
.
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static |
Attempt to ensure a UsdPrim adhering to this schema at path
is defined (according to UsdPrim::IsDefined()) on this stage.
If a prim adhering to this schema at path
is already defined on this stage, return that prim. Otherwise author an SdfPrimSpec with specifier == SdfSpecifierDef and this schema's prim type name for the prim at path
at the current EditTarget. Author SdfPrimSpec s with specifier
== SdfSpecifierDef and empty typeName at the current EditTarget for any nonexistent, or existing but not Defined ancestors.
The given path must be an absolute prim path that does not contain any variant selections.
If it is impossible to author any of the necessary PrimSpecs, (for example, in case path cannot map to the current UsdEditTarget's namespace) issue an error and return an invalid UsdPrim.
Note that this method may return a defined prim whose typeName does not specify this schema class, in case a stronger typeName opinion overrides the opinion at the current EditTarget.
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Return a UsdGeomPoints holding the prim adhering to this schema at path
on stage
. If no prim exists at path
on stage
, or if the prim at that path does not adhere to this schema, return an invalid schema object. This is shorthand for the following:
USDGEOM_API UsdAttribute UsdGeomPoints::GetIdsAttr | ( | ) | const |
Ids are optional; if authored, the ids array should be the same length as the points array, specifying (at each timesample if point identities are changing) the id of each point. The type is signed intentionally, so that clients can encode some binary state on Id'd points without adding a separate primvar.
Declaration | int64[] ids |
C++ Type | VtArray<int64_t> |
Usd Type | SdfValueTypeNames->Int64Array |
USDGEOM_API size_t UsdGeomPoints::GetPointCount | ( | UsdTimeCode | timeCode = UsdTimeCode::Default() | ) | const |
Returns the number of points as defined by the size of the points array at timeCode.
snippets.dox GetCount
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Return a vector of names of all pre-declared attributes for this schema class and all its ancestor classes. Does not include attributes that may be authored by custom/extended methods of the schemas involved.
USDGEOM_API UsdAttribute UsdGeomPoints::GetWidthsAttr | ( | ) | const |
Widths are defined as the diameter of the points, in object space. 'widths' is not a generic Primvar, but the number of elements in this attribute will be determined by its 'interpolation'. See SetWidthsInterpolation() . If 'widths' and 'primvars:widths' are both specified, the latter has precedence.
Declaration | float[] widths |
C++ Type | VtArray<float> |
Usd Type | SdfValueTypeNames->FloatArray |
USDGEOM_API TfToken UsdGeomPoints::GetWidthsInterpolation | ( | ) | const |
Get the interpolation for the widths attribute.
Although 'widths' is not classified as a generic UsdGeomPrimvar (and will not be included in the results of UsdGeomPrimvarsAPI::GetPrimvars() ) it does require an interpolation specification. The fallback interpolation, if left unspecified, is UsdGeomTokens->vertex , which means a width value is specified for each point.
USDGEOM_API bool UsdGeomPoints::SetWidthsInterpolation | ( | TfToken const & | interpolation | ) |
Set the interpolation for the widths attribute.
interpolation
is not a legal value as defined by UsdPrimvar::IsValidInterpolation(), or if there was a problem setting the value. No attempt is made to validate that the widths attr's value contains the right number of elements to match its interpolation to its prim's topology.
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Compile time constant representing what kind of schema this class is.