Stride Specifies the number of floats or doubles between the beginning of one control point and the beginning of the next one in the data structure referenced in Points . This allows control points to be embedded in arbitrary data structures. The only constraint is that the values for a particular control point must occupy contiguous memory locations. Order Specifies the number of control points. Must be positive.
Points Specifies a pointer to the array of control points.
As is the case with all GL subroutines that accept pointers to data, it is as if the contents of Points were copied by glMap1 before it returned. Changes to the contents of Points have no effect after glMap1 is called. Associated Gets Associated gets for the glMap1 subroutine are as follows. OpenGL Overview .