primhedge

int  primhedge(<geometry>geometry, int prim)

<geometry>

When running in the context of a node (such as a wrangle SOP), this argument can be an integer representing the input number (starting at 0) to read the geometry from.

Alternatively, the argument can be a string specifying a geometry file (for example, a .bgeo) to read from. When running inside Houdini, this can be an op:/path/to/sop reference.

prim

The primitive number in the geometry. 0 is the first primitive.

Returns

The number of an arbitrary half-edge contained in prim. Returns -1 if the primitive number is not valid.