Quadrics are various smooth surfaces described by functions like:
x2 + y2 + z2 = r2
The basic GLU quadrics are spheres, cylinders, cones, and disks.
To draw one, create a "quadric object" and pass it to the appropriate GLU function. There are functions to control how a quadric is drawn - with points, lines, or polygons; with or without lighting; with or without texturing.
quadric = gluNewQuadric() gluQuadricDrawStyle(quadric, GLU_LINE) gluSphere(quadric, 2.5, 32, 24)
Example code: gluQuadrics.py