[Bf-gamedev] New Bullet version and Featherstone

[Daniel Stokes]

As a reminder, this mailing list is not intended for requesting BGE
specific features. It is more to discuss improvements to Blender for use in
developing game assets.

Regards,
Daniel Stokes


On Sat, Nov 2, 2013 at 2:10 PM, Jacob Merrill <blueprintrandom1 at gmail.com>wrote:

> The new Bullet 2.82 SDK is available for download. It allows for higher
> quality physics simulation, suitable for robotics, using the Featherstone
> articulated body algorithm. The release also introduces a new Mixed Linear
> Complementarity Problem (MLCP) solver interface, with various direct solver
> implementations. Read more here.
>
> Our focus is now on integrating all Bullet 2.x features into the upcoming
> Bullet 3.x SDK. You can learn more about its progress in our SIGGRAPH
> course notes on GPU rigid body simulation at the Multithreading and VFX
> website.
>
> So in 1 paragraph they talked about both multithreading and Featherstone,
> this may be why I was confused,
>  On Nov 1, 2013 12:20 PM, "Arnaud Degroote" <arnaud.degroote at laas.fr>
> wrote:
>
>> On 01/Nov - 09:53, Jacob Merrill wrote:
>> > Featherstone allows for Inverse kinematics for 6dof chains in real time.
>> > Allowing animation using objects that physically interact, or for
>> robotics
>> > control/ emulation
>> > On Nov 1, 2013 9:50 AM, "Jacob Merrill" <blueprintrandom1 at gmail.com>
>> wrote:
>> >
>> > > I have been using 6dof solvers to animate, and it works amazing but
>> it's
>> > > rather resource intensive, but is dynamic and can be pushed, yanked
>> etc.
>> > >
>> > > http://www.youtube.com/watch?v=s57ipxhXBS4
>> > > On Nov 1, 2013 9:41 AM, "Mitchell Stokes" <mogurijin at gmail.com>
>> wrote:
>> > >
>> > >> Solving 6dof joint constraints is not a bottleneck (at least in any
>> BGE
>> > >> game I've looked at). So, it's not currently worth our time to spend
>> > >> development resources speeding it up. That being said, you (or
>> anyone else)
>> > >> are more than welcome to create a patch.
>> > >>
>>
>> Just to add we develop a robotic simulator using blender / game engine
>> (morse.openrobots.org) and we will be really interested by this feature
>> to simulate in a smarter way complex armature.
>>
>> Best regards,
>>
>> --
>> Arnaud Degroote
>> Postdoc
>> RIA LAAS - CNRS
>>
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