typedef struct {
unsigned short rationality; /* PEXRational or PEXNonRational */
unsigned short uorder;
unsigned short vorder;
unsigned short unused;
unsigned int col_count;
unsigned int row_count;
float *uknots;
float *vknots;
PEXPointer points; /* 3D or 4D PEXCoord */
} PEXSurfaceGeometrySpline;
PEXSurfaceGeometrySpline is a data structure that is common to the following function:
For a list of data structures for non-uniform rational B-splines, see Data Structures for NURBS.