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nrb4surf

PURPOSE ^

SYNOPSIS ^

function srf = nrb4surf(p11,p12,p21,p22)

DESCRIPTION ^

 
 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

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:
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