#usda 1.0
(
    "WARNING: THIS FILE IS GENERATED BY usdGenSchema.  DO NOT EDIT."
)

class GenerativeProcedural "GenerativeProcedural" (
    doc = """
    Represents an abstract generative procedural prim which delivers its input
    parameters via properties (including relationships) within the \"primvars:\"
    namespace.
 
    It does not itself have any awareness or participation in the execution of
    the procedural but rather serves as a means of delivering a procedural's
    definition and input parameters.
 
    The value of its \"proceduralSystem\" property (either authored or provided
    by API schema fallback) indicates to which system the procedural definition
    is meaningful.
    """
)
{
    float3[] extent (
        doc = """Extent is a three dimensional range measuring the geometric
        extent of the authored gprim in its own local space (i.e. its own
        transform not applied), without accounting for any shader-induced
        displacement. If __any__ extent value has been authored for a given 
        Boundable, then it should be authored at every timeSample at which 
        geometry-affecting properties are authored, to ensure correct 
        evaluation via ComputeExtent(). If __no__ extent value has been 
        authored, then ComputeExtent() will call the Boundable's registered 
        ComputeExtentFunction(), which may be expensive, which is why we 
        strongly encourage proper authoring of extent.
        \\sa ComputeExtent()
        \\sa \\ref UsdGeom_Boundable_Extent.
        
        An authored extent on a prim which has children is expected to include
        the extent of all children, as they will be pruned from BBox computation
        during traversal."""
    )
    token proceduralSystem (
        doc = """The name or convention of the system responsible for evaluating
        the procedural.
        NOTE: A fallback value for this is typically set via an API schema."""
    )
    rel proxyPrim (
        doc = '''The proxyPrim relationship allows us to link a
        prim whose purpose is "render" to its (single target)
        purpose="proxy" prim.  This is entirely optional, but can be
        useful in several scenarios:
        
        - In a pipeline that does pruning (for complexity management)
        by deactivating prims composed from asset references, when we
        deactivate a purpose="render" prim, we will be able to discover
        and additionally deactivate its associated purpose="proxy" prim,
        so that preview renders reflect the pruning accurately.
        
        - DCC importers may be able to make more aggressive optimizations
        for interactive processing and display if they can discover the proxy
        for a given render prim.
        
        - With a little more work, a Hydra-based application will be able
        to map a picked proxy prim back to its render geometry for selection.

        \\note It is only valid to author the proxyPrim relationship on
        prims whose purpose is "render".'''
    )
    uniform token purpose = "default" (
        allowedTokens = ["default", "render", "proxy", "guide"]
        doc = """Purpose is a classification of geometry into categories that 
        can each be independently included or excluded from traversals of prims 
        on a stage, such as rendering or bounding-box computation traversals.

        See for more detail about how 
        purpose is computed and used."""
    )
    token visibility = "inherited" (
        allowedTokens = ["inherited", "invisible"]
        doc = '''Visibility is meant to be the simplest form of "pruning" 
        visibility that is supported by most DCC apps.  Visibility is 
        animatable, allowing a sub-tree of geometry to be present for some 
        segment of a shot, and absent from others; unlike the action of 
        deactivating geometry prims, invisible geometry is still 
        available for inspection, for positioning, for defining volumes, etc.'''
    )
    uniform token[] xformOpOrder (
        doc = """Encodes the sequence of transformation operations in the
        order in which they should be pushed onto a transform stack while
        visiting a UsdStage's prims in a graph traversal that will effect
        the desired positioning for this prim and its descendant prims.
        
        You should rarely, if ever, need to manipulate this attribute directly.
        It is managed by the AddXformOp(), SetResetXformStack(), and
        SetXformOpOrder(), and consulted by GetOrderedXformOps() and
        GetLocalTransformation()."""
    )
}