Bezier curves

[Jim Hurley]

Greetings all,

An earlier thread on Bezier Curves peaked my interest; in particular, 
how do you program the multi-point bezier curve? Alejandro Tejada 
showed us how to draw the basic bezier unit, a bezier line with two 
end points each with its own tangent control.

It turns out that the multi-point bezier line can be made up of a 
combination of these basic units. Since only nearest neighbors 
interact on a bezier line, all that is needed is to allow nearest 
neighbors of these basic units to talk to one another--gossip over 
the fence.

Draw the basic shape in RR using the polygon tool. The plug-in then 
uses that graphic as a template for the bezier curve, replacing the 
polygon points with bezier handles and the intervening straight line 
with a bezier line.

It allows for both corner points and continuous tangent points.

And, because it interests me, I have included a little bit about the 
underlying mathematics in a substack.

If you have need of bezier lines you will find this plug-in at:

http://home.infostations.net/jhurley/

and look for Bezier Line under Utilities.

Jim