[ODE] ODE vs. Bullet engine

[erwin@erwincoumans.com]

Bullet Physics is actively under development at the moment. In a recent 
meeting with Russel Smith we discussed the option of adding the Collision 
Detection (GJK) to ODE. That might happen in the future. It will be an 
alternative to using Opcode. It would give more collision shapes, and 
continuous collision detection. 

You can read a bit more about Bullet Physics here:
http://www.continuousphysics.com/ftp/pub/test/physics/Bullet_CcdPhysics_Manu 
al.pdf 

Bullet Collision Detection can work with ODE, or it can use Bullet's native 
Dynamics. The Dynamics part of Bullet is very limited. No limits, no motors, 
only point to point and contact constraint. It uses a sequential impulse 
based method which is very similar to PGS in the end. 

See http://www.continuousphysics.com/Bullet/phpBB2/viewtopic.php?t=208 for 
details. 

So again, most promising of Bullet is the option to replace Opcode. At the 
moment its too slow for that, optimizations need to be added. Stability is 
getting better tough. 

Erwin 

Nguyen Binh writes: 

> Have you noticed that Bullet Physics = ODE?
> The main different is collision detection. I think Erwins is in this list.  
> 
> On 2/21/06, Misha Smelyanskiy <mmaloff2002 at yahoo.com> wrote:
>> 
>> Just wander if anybody has an opinion on ODE vs. Bullet Physics engine (
>> http://www.blender.org/cms/Bullet_Physics.724.0.html), in terms of
>> advantages of one versus another, in terms of both collision detection and
>> iterative solver?  
>> 
>> Thanks,
>> Mike  
>> 
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>> 
>>  
>> 
>   
> 
> --
> --------------------------------------------------
> Binh Nguyen
> Computer Science Department
> Rensselaer Polytechnic Institute
> Troy, NY, 12180
> --------------------------------------------------