that's the point. Something is wrong about the architecture of code,
because it encourages bad behavior, like yours. What's wrong, how to
fix it?
What is questionable in the first place is that sphere-* contact is
represented as sphere-sphere contact (sphere-facet, sphere-box).
I tried to fix that with Dem3DofGeom which already works quite fine for
sphere-sphere and sphere-facet. It has virtual methods for getting
deformations on the contact, therefore the constitutive law doesn't care
if it is sphere-sphere or sphere-facet (but still can know it, would it
be needed). If I have some time, I will also create incremental version
of those, which will be basically SpheresContactGeometry for
sphere-sphere and something similar for sphere-facet. Then it will be
interesting to compare them peformancewise and precisionwise.
Vaclav
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