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6.7.12 NURBSUBS (ru, rv, s)
Creates a nurbs surface defined by subranges ru and rv of
the parametric uvdomain of another nurbs surface s.
ru and rv are typeless nodes to which the lower and upper
bound of the subranges for u and v of the parametric domain of the other
nurbs surface are connected,
s must be of type TNURBSURF (see 6.7.22).
In the C++ class hierarchy the class created by the NURBSUBS keyword is derived
from a general trimmed nurbs surface class (see TNURBSURF, 6.7.22),
so that it can be used at any places where a trimmed nurbs surface is expected
(with the same number format and control point type of course)
The following variations of this keyword exist (some of them
define the same internal structures, and are only defined to allow
consistent naming conventions):
Keyword 
numbers 
control points 
remarks 
NURBSUBS 
float 
homogeneous,3D 

NURBSUBS_F 
float 
homogeneous,3D 

NURBSUBS_D 
double 
homogeneous,3D 





NURBSUBS_E1 
float 
euclidian,1D 
cannot be rendered 
NURBSUBS_E3 
float 
euclidian,3D 

NURBSUBS_H1 
float 
homogeneous,1D 
cannot be rendered 
NURBSUBS_H3 
float 
homogeneous,3D 





NURBSUBS_F_E1 
float 
euclidean,1D 
cannot be rendered 
NURBSUBS_F_E3 
float 
euclidean,3D 

NURBSUBS_F_H1 
float 
homogeneous,1D 
cannot be rendered 
NURBSUBS_F_H3 
float 
homogeneous,3D 





NURBSUBS_D_E1 
double 
euclidean,1D 
cannot be rendered 
NURBSUBS_D_E3 
double 
euclidean,3D 

NURBSUBS_D_H1 
double 
homogeneous,1D 
cannot be rendered 
NURBSUBS_D_H3 
double 
homogeneous,3D 

Next: 6.7.13 NURBSURF (k1, k2,
Up: 6.7 Keywords defining Geometric
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