RE: [Algorithms] Colliding against polygon soup

[Robert D. <RD...@ac...>]

> I think the most fundamental reason that I've hardly ever 
> done this (though I have used it in some situations) is
> that the need to reserve memory for both rendering and
> collisions representations of the world database usually
> turns out to be a problem on consoles.  Your mileage may,
> of course, vary...
> Especially if you're not doing a console version:-)

But if you are doing a console version, depending on the console, you will
probably have your render data in a highly render dependent format, which
most likely won'y include the info you would require for collision.  For
example if your collision requires vertices and a normal, but your renderer
doesn't bother with a normal because your pixel fill rate is so high you may
as well draw everything.  Or your render data is organised by texture to
speed up rendering, but you need your collision data organised by locale to
speed up collision.

As you say, your mileage may vary!

Rob