Bezier Ribbons 3D

Heading on the way to doing Bezier surfaces, taking this brief stop to enhance the Bezier ribbon function.

This thing will generate a 3D Ribbon, where not just the profile, but the height, can also be controlled. You give it two Bezier curves, and the first curve's 'z' values will be taken as control points for the overall height of the ribbon.

With a couple of modifications, the second curve could be used to indicate a z-axis offset, which would give you double the pleasure.

The other