[ODE] odecpp.h

[Russ Smith]

> dSpace and dWorld have the nifty feature that they're "real"
> constructors don't take any arguments.  So, I made the default
> constructors create a space/world and didn't provide a "set id to
> zero" constructor.  Therefore, you could create an array of them and
> they'd all be properly initialized. Also, it would be impossible to
> use one before initializing it.
> 
> Looks like Russ changed it.  But if he hasn't changed the destructor,
> you need to change it to this:

yes - i changed dSpace so that both the simple and hash space can be
accessed. there *are* some situations where the simple space is
preferable to the hash space:

  (1) you're trying to debug some collision problem and you think it
      might be the space code. the simple space is, well, simpler.
  (2) simple space is faster for < n objects (where 'n' is some number
      that i never measured but might be, e.g. 3-5).

the problem is actually that people can unwittingly create dSpace.
it should be an abstract class. thus, i have made dSpace::dSpace() a
protected member (checked into CVS).

russ.

-- 
Russell Smith
http://www.q12.org