int hedge_presrcvertex(<geometry>geometry, int hedge)
<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.
hedge
Input halfedge.
Returns
The vertex number of the vertex that comes before the source vertex of the hedge
in the primitive that contains hedge
.
Returns 1
if the halfedge is not valid.
Examples
int presrcvtx; // Get the presource vertex of halfedge number 3. presrcvtx = hedge_presrcvertex("defgeo.bgeo", 3);
hedge 
