Splines in OpenGL

Here are some slides about OpenGL's support for Bezier splines

Here are 3 test programs:

• SplineCurves.java This draws 3 curves: A 2-segment curly thing made from 7 control points, a 4-segment circle-like thing made from 13 control points, and an N-segment thing whose control points are plotted exactly on a circle.
• TestPatch.java This draws 2 connected patches.
• ClosedSurface.java This draws 2 vase-like objects. The red one uess t he 13 control poiints from the SplineCurves program to defube 7 levels with different radii, giving a total of 8 patches (2 levels which 4 walking around the vase at each level). The green obect uses the N-segment circle aproximation and is much smoother