Hi Bill!

I never used Isosurface before, nor Megapov but what about:

#local Sun = function(SunMass/(max((x-SunPosx)*(x-SunPosx)+

(z-SunPosz)*(z-SunPosz),1/hole_deep)))
isosurface {
 funcition {y+Sun[+Earth]}
...

just insert a Povrayunit equalent Sunmass and SunPos, do the same for
earth and so on.
hole_deep keeps the isosurface from getting infinit at the exact
points of the
pointmasses. Define somewhat 100.

its from the formular
F = G*m1*m2/R^2
That is the force between to pointmasses. G is the gravityconstant

cukk

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