vector prim_normal(<geometry>geometry, int prim_number, vector uvw)
vector prim_normal(<geometry>geometry, int prim_number, float u, float v)
vector prim_normal(<geometry>geometry, int prim_number, float u, float v, float w)
<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.
uvw
, u
, v
, w
When ‹w› is not given, it is treated as zero.
Returns
The normal of the primitive (prim_number) at parametric location ‹u›, ‹v›, ‹w›.
normals | |
prim |
|