RhinoNurbsSurface.curvature_at

RhinoNurbsSurface.curvature_at(u, v)

Compute the curvature at a point on the surface.

Parameters

• u (float)

• v (float)

Returns

tuple[[float, float, float], [float, float, float], float, [float, float, float], float, [float, float, float], float, float] | None – A tuple containing the point, normal vector, maximum principal curvature value, maximum principal curvature direction, minimun principal curvature value, minimun principal curvature direction, gaussian curvature value and mean curvature value for the point at UV. None at failure.