VEX Dictionary / primduv
primduv
Computes a positional derivative of a primitive's surface at a UV location, for tangent or curvature.
group: attribprimderiv
Available in every context
Usage
vector primduv(<geometry>; int prim_number; vector2 uv; int du; int dv)Examples
No worked examples yet.
Signatures (from vcc -X)
vector primduv(int, int, vector2, int, int)all contextsvector primduv(string, int, vector2, int, int)all contexts