On 2015-09-06 08:47 AM (-4), clipka wrote:
> One of the worst things you can do is place a macro in an include file,
> and call that macro a lot from the main file. This will cause POV-Ray to
> repeatedly open and close that include file for each and every macro
> invocation.

And this is exactly how both And and I implemented sphere sweep unions 
and merges (by calling Connect_Spheres() in shapes.inc).  Still, the 
parse times seem negligible, probably due to file caching.

Nevertheless, you have now persuaded me to write a substitute for VEq() 
in SphereSweep, especially since, for that module's purposes, the 
arguments needed preprocessing anyway before passing them to VEq().

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