[Sidefx-houdini-list] cloth troubles

Javier Meroño javiermerono at hotmail.com
Tue Apr 1 12:04:49 EDT 2014


According to odforce this isn´t the case, but I haven´t seen any proof of bullet-like collisions with cloth/FEM yet. I´ll have to test more though...

Javier Meroño

> From: javiermerono at hotmail.com
> To: sidefx-houdini-list at sidefx.com
> Date: Tue, 1 Apr 2014 17:51:28 +0200
> Subject: Re: [Sidefx-houdini-list] cloth troubles
> 
> AFAIK when rigid body objects work with any other solver such as flips, almost always it´s not Bullet but a volume representation of the object. 
> I recall a recent masterclass talking about this.
> It looks like it´s the same thing with FEM.
> regards,
> 
> 
> Javier Meroño
> 
> > Date: Tue, 1 Apr 2014 16:05:46 +0200
> > From: zoran.arizanovic at gmail.com
> > To: sidefx-houdini-list at sidefx.com
> > Subject: Re: [Sidefx-houdini-list] cloth troubles
> > 
> > sure Dominic
> > me neither, but somehow this change from cloth solver to fem for cloth
> > although it brought amazing new features left cloth hanging behind and
> > documentation was not overhauled for it
> > but i guess until H14 we will figure things out ;)
> > 
> > 
> > Zoran Arizanovic
> > 
> > http://zoranarizanovic.blogspot.com/
> > LinkedIn <http://www.linkedin.com/pub/zoran-arizanovic/4/177/295>
> > vfx reel : http://vimeo.com/28605448
> > http://www.imdb.com/name/nm2902303/
> > 
> > 
> > On Tue, Apr 1, 2014 at 3:40 PM, Dominik Kirouac <dk at shedmtl.com> wrote:
> > 
> > > I'm not an expert, still learning this new solver. Maybe you can take a
> > > look at the Doc for this info... I'm not sure it's written. But Volume are
> > > a sure shot.
> > >
> > > But I think FEM use both and volume collision can be more accurate. You
> > > can also try using VDB for collision, it's faster to compute.
> > >
> > > -In your SOP tube geo node, use convert VDB node ( distance VDB and change
> > > voxel size to get more accurate definition of the volume).
> > >
> > > -in you dop static obj node, volume mode to volume sample, you also have
> > > to set the division size and in proxy volume load you vdb from sop.
> > >
> > >
> > > *Dominik Kirouac // SHED **
> > > *FX Artist
> > > 1410, RUE STANLEY, 11E Étage MONTRÉAL (QUÉBEC) H3A 1P8
> > > T 514 849-1555 F 514 849-5025 WWW.SHEDMTL.COM <http://www.shedmtl.com/>
> > >
> > >
> > > Le 01/04/2014 9:17 AM, Zoran Arizanovic a écrit :
> > >
> > >> thanks Dominic
> > >> is  FEM cloth is using rbd volume representation for collision not bullet
> > >> concave mesh?
> > >> how do i know which modul of dynamics uses bullet and which one not?
> > >>
> > >>
> > >> Zoran Arizanovic
> > >>
> > >> http://zoranarizanovic.blogspot.com/
> > >> LinkedIn <http://www.linkedin.com/pub/zoran-arizanovic/4/177/295>
> > >> vfx reel : http://vimeo.com/28605448
> > >> http://www.imdb.com/name/nm2902303/
> > >>
> > >>
> > >> On Tue, Apr 1, 2014 at 3:15 PM, Dominik Kirouac <dk at shedmtl.com> wrote:
> > >>
> > >>  Hi Zoran,
> > >>>
> > >>> take a look at your tube static object/collisions/RBD solver/Volume
> > >>>
> > >>> Since you are using the "Use volume based collision detection", you got
> > >>> to
> > >>> give more divisions to your volume to get accurate border detection.
> > >>> Change
> > >>> setting in the surface won't affect the collision until you uncheck the
> > >>> "Use volume based collision detection", btw I think volume collision is
> > >>> better than Surface.
> > >>>
> > >>> You can "show collision guide Geometry to see what the collision really
> > >>> look like.
> > >>>
> > >>> Cheers
> > >>>
> > >>> *Dominik Kirouac // SHED **
> > >>> *FX Artist
> > >>> 1410, RUE STANLEY, 11E Étage MONTRÉAL (QUÉBEC) H3A 1P8
> > >>> T 514 849-1555 F 514 849-5025 WWW.SHEDMTL.COM <http://www.shedmtl.com/>
> > >>>
> > >>>
> > >>> Le 01/04/2014 8:05 AM, Zoran Arizanovic a écrit :
> > >>>
> > >>>  hi
> > >>>> could someone please take a peak at this
> > >>>> it is driving me crazy
> > >>>> http://forums.odforce.net/topic/19822-cloth-penetration/?p=118803
> > >>>>
> > >>>> cheers
> > >>>> Zoran Arizanovic
> > >>>>
> > >>>> http://zoranarizanovic.blogspot.com/
> > >>>> LinkedIn <http://www.linkedin.com/pub/zoran-arizanovic/4/177/295>
> > >>>>
> > >>>> vfx reel : http://vimeo.com/28605448
> > >>>> http://www.imdb.com/name/nm2902303/
> > >>>> _______________________________________________
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