[ODE] multiple box-box contacts

Peter Amstutz tetron at interreality.org
Mon Nov 25 11:25:02 2002


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Awesome!  This is what I've been waiting for -- now I can use ODE for my
VR simulation.  Oh, and it's really fun to just play with the box stacking
demo, to make a huge tower and then knock it down...

Great work!  Russ, you rule :-)  It's amazing to have such excelent code
freely available.

On Sun, 24 Nov 2002, Russ Smith wrote:

>
> i have just finished an update to the box-box contact generation code.
> now up to 8 contacts can be generated per box-box collision, although in
> practice a limit of 3 or 4 is more useful. the test_boxstack demo has
> been updated to show box stacking in action: press 'r' to drop boxes in
> a stack, then press b multiple times. press 't' to show the contact
> points that are generated. you can play with different numbers of
> contacts by changing the 3rd argument to dCollide() - the default is 4.
>
> note that you have to compile ODE *without* ODE_OLD_COLLISION in
> user-settings to get the new code.
>
> be careful in your own code to generate as few box-box contacts as you
> actually need, as each extra contact point will slow down the simulation
> some more.
>
> this new code contains a number of heuristics that should result in good
> contact choices - but these algorithms need some more real-world
> testing. please report any problems you come across.

[   Peter Amstutz   ][ amstutz@cs.umass.edu ][ tetron@interreality.org  ]
[Lead Programmer][Interreality Project][Virtual Reality for the Internet]
[ VOS: Next Generation Internet Communication][ http://interreality.org ]
[ http://interreality.org/~tetron ][ pgpkey:  pgpkeys.mit.edu  18C21DF7 ]
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