Real-Time Physics Simulation Forum 2014-08-20T19:39:41+00:00 https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/10010 2014-08-20T19:39:41+00:00 2014-08-20T19:39:41+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=33850#p33850 <![CDATA[Re: Position based dynamics problem]]>
I have read this question several times but still do not really understand it.
But IMHO Position Based Methods have a lot of advantages compared to other.

Statistics: Posted by DevO — Wed Aug 20, 2014 7:39 pm

]]> 2014-07-14T21:19:20+00:00 2014-07-14T21:19:20+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=33683#p33683 <![CDATA[Position based dynamics problem]]> When simulate deformation, you can use:
Force based method: such as mass spring, FEM
Position based dynamic (PBD)method: such as shape matching
Surface editing method: such as Laplacian surface editing

I currently work on position based method. There are a set of constraints definition in paper "Position Based Dynamics,2006,Matthias Muller".

I was wondering that what's the difference between the position based method and surface editing method or mesh modelling method(such as Laplacian method) in deformation simulation?

PBD have a set of constraints definition to control deformation. The constraints based on distance projection. I was wondering is it ok if i replace these constraints with techniques used in surface eidting such as laplacian surface editing to control and smooth the deformation. For example, I will let shape matching simulate the global deformation and use laplacian operator do the local deformation when collision happens. Is there any disadvantages of doing it like this ?

Statistics: Posted by apapaxionga — Mon Jul 14, 2014 9:19 pm

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