OpenGL trimming curves are very similar to IRIS GL trimming curves. The following table lists the IRIS GL functions for defining trimming curves and their equivalent OpenGL functions.
| IRIS GL Function | OpenGL Function | Meaning |
|---|---|---|
| bgntrim | gluBeginTrim | Begin trimming-curve definition. |
| pwlcurve | gluPwlCurve | Define a piecewise linear curve. |
| nurbscurve | gluNurbsCurve | Specify trimming-curve attributes. |
| endtrim | gluEndTrim | End trimming-curve definition. |