"Tony[B]" wrote:
> 
> How can I get an exact/closely approximated measure of the distance traveled
> along a spline and the total length of it? I am using a cubic_spline in
> MegaPOV.

You could try using Chris Colefax's spline macros instead, I believe they are
capable of finding the (approximate) length of a cubic spline.
Finding the exact length is an exceedingly hairy problem, or so I gather.

-- 
Margus Ramst

Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg

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