vertexprim

int  vertexprim(<geometry>geometry, int linearvertex)

Note To convert the linear index into a primitive number and primitive vertex number, use vertexprim and vertexprimindex.

<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.

linearvertex

The linear index of a vertex. If you have a point number and point vertex number, you can use vertexindex to convert them to a linear index.

Returns

The primitive number of the primitive containing the vertex, or -1 if the vertex has no primitive.

Examples

examples

int        pt;

// Get the primitive of vertex 3
pt = vertexprim("defgeo.bgeo", 3);