primvertex

int  primvertex(<geometry>geometry, int primnum, int vertex)

<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.

primnum

The primitive number to get a vertex from.

vertex

The vertex number inside the primitive. 0 is the first vertex.

Returns

The linear vertex index corresponding to the given primitive vertex. Returns -1 if the function cannot find the linear vertex index.

Examples

examples

int linearvtx;

// Get the linear vertex value of vertex 2 of primitive 3.
linearvtx = primvertex("defgeo.bgeo", 3, 2);