Andrea Ryan wrote:

> I'll try to make solid star prisms if I find out how to move a point
> towards the origin.
> Brendan Ryan

Multiply the coordinates of your point by the fraction of how much closer
you want the point to be to the origin.  For example, if you have a point
<x,y,z> and you want it to be only half as far away from the origin, it's
new coordinate will be .5*<x,y,z>

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