formZ SDK | 5.0 API Reference | System | Nurbs Surface

fz_nsrf_evaluate_derivatives_at_parm

Description

Evaluates the position, tangent and normal on a NURBS surface given [u,v].

Plugin Prototype

fzrt_error_td fz_nsrf_evaluate_derivatives_at_parm(

fz_nurbs_srf_ptr

srf,

double

uu,

double

vv,

fz_xyz_td *

point,

fz_xyz_td *

u_tangent,

fz_xyz_td *

v_tangent,

fz_xyz_td *

normal )

Parameters

srf [Input]

NURBS surface

uu [Input]

parameter in U

vv [Input]

parameter in V

point [Result]

Point on surface

u_tangent [Result]

Tangent vector in U

v_tangent [Result]

Tangent vector in V

normal [Result]

Normal on surface

Returns

Error codes

Availability

5.0.0.0

Example Files

util_nsrf.fsl

See Also

Function Set

fz_nsrf_fset


Defined in

fz_nsrf_api.h