Peter Popov wrote:
>  There was a thread in this forum called "Adding forces to points on
> curves" started by Rune on Dec 27. Some of the replies there dig into
> your problem.

Thanks for the tip. I've read the posts about getting equally spaced 
points on a spline but haven't had the time to dig into the macros.

> t1, where t1 is such that the integral of f(t)/dt from t to t1 equals

I agree if you mean:
integral of sqrt(X'(t)^2 + Y'(t)^2 + Z'(t)^2) from 0 to t1 equals l/n.

.. and the next would be from t1 to t2 right?
But I can't solve this equation analytically. 

As I see it I can 
a) produce splines in pov using LSpline3
b) produce splines in Matlab
c) solve the 13 equations above numerically in Matlab

-- think I'll start with a) even though I'm a spline virgin.

sig.

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