Jim Wilson writes:

 > That's what I meant.  Thanks for the example.  BTW what would be
 > the application of property tree swapping, as opposed to say the
 > method that the view manager uses?

Curt and I have discussed this before (either online or offline).  We
could certainly have per-vehicle subtrees, i.e.

  <vehicle n="0">

and so on, and that would let us share some common, sim-wide
information at the top level, and would make all program-wide
information available at a single glance.  The alternative is to use
the multi-process model rather than a multi-thread model, and to swap
entire property trees in and out like memory pages; we'll certainly
avoid a lot of bugs that way (because the wrong properties simply
won't be available).

What does everyone else think?

All the best,


David Megginson, [EMAIL PROTECTED], http://www.megginson.com/

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