この NurbsSurface に含まれるトリムの数をLongとして戻します。
set oObject = ActiveSceneRoot.AddGeometry("Sphere","NurbsSurface")
set oNurbsSurfaceMesh = oObject.ActivePrimitive.Geometry
set oNurbsSurface = oNurbsSurfaceMesh.Surfaces(0)
LogMessage "Number of trims on this nurbs surface: " & oNurbsSurface.TrimCount
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