>>>The choice of which co-ordinate system to use in this case makes a big difference as to how the rest of the program is written. That's why Einstein banished the absolute reference frame, because he had to make the speed of light constant in all relative frames.
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>>So you'd have a more complicated transitional matrix between reference frames, which would not be just 3x3, but would also have to include the speed, time etc, whatever it takes. IOW, the transition between the reference frames wouldn't be constant, but more a tensor. So what, differential geometry is not so new.
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>"A more complicated transitional matrix between reference frames."
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>Not sure I'm following.
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>If our co-ordinate system was a relative reference frame, then it is trivial to make the relative speed of light constant.
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>But if our co-ordinate system was absolute space, there is only one reference frame, and I am not sure where the transitional matrix between them comes in.
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>It might help if you explained your idea with code.

I was refering to the case where we have to code for two events in separate reference frames, and wanted to normalize them into a common reference frame. In Newtonian space, there'd be a simple 3x3 matrix to transform any vector from any frame into a common frame. However, IMO, the transformation in relative space would be a tad more complicated, and may involve functions instead of just numbers in the matrix, to accomodate for relativistic effects.

The code is left to the reader as exercise :).