OpalPlanet wrote:
> I am currently working on a model of the solar system. Is there a way
> to make the planets leave a trail as they move and/or define an
> elipse in the shape of the orbits? I'm using astronomically correct
> formulae to calculate the planetary positons, so just cylinders or
> tori won't work.

If you place a sufficiently large number of tiny spheres along your path, it 
will look like a solid tube or string that follows your path. You can place 
then using a #while loop.

Alternatively you can look into sphere_sweeps with a sifficiently large 
number of control points along your path, again placed with a #while loop.

Rune
-- 
http://runevision.com

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