Porting Curve and Surface Functions

OpenGL doesn't support equivalents to the IRIS GL functions for curves and surface patches. You'll need to rewrite your code if it includes any of the following calls:

• defbasis
• curvebasis, curveprecision, crv, crvn, rcrv, rcrvn, and curveit
• patchbasis, patchcurves, patchprecision, patch, and rpatch

This topic includes information on the following.

• Porting NURBS Objects
• Porting NURBS Curves
• Porting Trimming Curves
• Porting NURBS Surfaces