When porting spheres to OpenGL, keep the following points in mind:
The following table lists the IRIS GL functions for drawing spheres and their equivalent GLU functions where available.
IRIS GL Function | GLU Function | Meaning |
---|---|---|
sphobj | gluNewQuadric | Create a new sphere object. |
sphfree | gluDeleteQuadric | Delete sphere object and free memory used. |
sphdraw | gluSphere | Draw a sphere. |
sphmode | — | Set sphere attributes. |
sphrotmatrix | — | Control sphere orientation. |
sphgnpolys | — | Return number of polygons in current sphere. |