NRB4SURF: Constructs a NURBS bilinear surface.
Calling Sequence:
srf = nrb4surf(p11,p12,p21,p22)
Parameters:
p11 : Cartesian coordinate of the lhs bottom corner point.
p12 : Cartesian coordinate of the rhs bottom corner point.
p21 : Cartesian coordinate of the lhs top corner point.
p22 : Cartesian coordinate of the rhs top corner point.
srf : NURBS bilinear surface, see nrbmak.
Description:
Constructs a bilinear surface defined by four coordinates.
The position of the corner points
^ V direction
|
----------------
|p21 p22|
| |
| SRF |
| |
|p11 p12|
-------------------> U direction