Changelog Description

Implement Maya USD Export Chaser to Filter Properties using a SideFX Houdini style pattern matching for all prim properties

Additional review information

For explanation on how the pattern works, see SideFX Houdini Pattern Matching in Parameters which it is loosely based on.

Results in:

#usda 1.0
(
    defaultPrim = "char_hero"
    metersPerUnit = 0.01
    upAxis = "Y"
)

def Xform "char_hero" (
    kind = "component"
)
{
    double3 xformOp:translate = (-0.4334395286605499, 0.8835878002001145, -0.6190157988997917)
    uniform token[] xformOpOrder = ["xformOp:translate"]

    def Mesh "pCube1"
    {
    }
}

Note how the mesh contains no properties at all - they are completely stripped from the written USD file.

TODO

• Improve attribute definition tooltip to describe the available pattern and maybe some examples.

Testing notes:

1. A new attribute "USD Filter Properties" should appear on Maya USD instances
2. When any pattern is entered, then only those properties would be exported into the output file. For example:

• Only include xforms: xformOp*
• Everything but xforms: * ^xformOp*
• Everything but mesh point data: * ^extent ^points ^faceVertexCounts ^faceVertexIndices ^primvars*