...problem that's driving me mental, cos the solution is going to be so
simple, but at the moment I just can't see it. :(

I'm trying to create a helix using a sphere_sweep and I'm missing
something - my limited maths tells me the points for a helix which extends
along the x-axis should be:
    #declare value = 2*pi*i/N;
    <pitch*i,sin(value),tan(value)/sin(value)>
where N is the number of points in the sphere_sweep and i is incremented in
a while-loop
-but its just plain wrong.

can someone steer me in the right direction?

thanks in advance
jim

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