I need to calculate the center of mass (an average of all their positions)
for some number n of entities. I have a template of the form
(ENTITY(ID)(X)(Y)). How can I write a rule to calculate it without having to
hardcode every entity into the left side of the rule? This is not possible
because entities may be added or deleted and I can't write a rule for every
combination of entities. The other idea I had was to keep a field in the
template and mark it as each entity is figured into the calculation. Once
the calculation is complete, reset all those fields for the next time. I am
sure there is a better way to go about this. Any help?
Keith.
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