[Bf-funboard] UV space constraint (stick on surface)

Knapp magick.crow at gmail.com
Sat Feb 13 17:35:05 CET 2016


I can't find it. I did find this. Does it help?
http://blender.stackexchange.com/questions/10831/how-can-an-animated-object-kept-on-the-surface-of-an-ocean

On Sat, Feb 13, 2016 at 5:25 PM, Hadrien Brissaud <hadriscus at gmail.com>
wrote:

> Paweł it works alright with single fixed objects; however this parenting
> unlike a constraint is a fixed thing, so the object will always move along
> with its parent vertex... even when a bone childof-constrains it on top (=
> when you need to detach the object, you can't).
> Furthermore it is impossible to make it part of an armature, for no more
> than a single bone can be parented to a vertex (or a set of three
> vertices). That means no pose mode for animating the object itself, and it
> can't be part of the same action as the armature (granted this is not so
> important).
>
> On 13 February 2016 at 17:09, Paweł Łyczkowski <pawellyczkowski at gmail.com>
> wrote:
>
> > @Hadrien You can always use Parent to Vertex -
> >
> >
> http://blender.stackexchange.com/questions/34324/how-do-i-stick-an-object-to-another-objects-vertex
> >
> > On Sat, Feb 13, 2016 at 5:08 PM Hadrien Brissaud <hadriscus at gmail.com>
> > wrote:
> >
> > > I do not see a search field, but if you have an idea around what time
> you
> > > made that suggestion we can find it. I am really curious to read what
> was
> > > said.
> > >
> > > On 13 February 2016 at 17:03, Knapp <magick.crow at gmail.com> wrote:
> > >
> > > > http://lists.blender.org/mailman/listinfo/bf-docboard
> > > >
> > > > On Sat, Feb 13, 2016 at 4:48 PM, Hadrien Brissaud <
> hadriscus at gmail.com
> > >
> > > > wrote:
> > > >
> > > > > Any idea how I can search the mailing list archive ?
> > > > >
> > > > > On 13 February 2016 at 16:30, Knapp <magick.crow at gmail.com> wrote:
> > > > >
> > > > > > I posted this idea a few years ago. I can't remember the
> conclusion
> > > now
> > > > > but
> > > > > > I am sure you could look it up. The back emails must be on the
> web
> > > > > > somewhere.
> > > > > > Douglas E Knapp
> > > > > >
> > > > > > On Sat, Feb 13, 2016 at 4:08 PM, Hadrien Brissaud <
> > > hadriscus at gmail.com
> > > > >
> > > > > > wrote:
> > > > > >
> > > > > > > Hi everyone,
> > > > > > >
> > > > > > > every now and then people on ba.org are asking about ways to
> > > > > constrain a
> > > > > > > object to a surface, like a shirt button, or any other prop
> you'd
> > > > want
> > > > > to
> > > > > > > stick to a deforming surface. Right now the best way I can
> think
> > of
> > > > is
> > > > > > > parenting the object to a bone you've set up to follow the
> > surface
> > > as
> > > > > > > accurately as possible (along with shrinkwrap constraint, and
> so
> > > on),
> > > > > or
> > > > > > > using the dorito method with the new depsgraph (
> > > > > > > https://www.youtube.com/watch?v=SfgHAWTMLrE).
> > > > > > > The first is a workaround that's difficult to make accurate
> while
> > > the
> > > > > > > second depends on the new depsgraph being active, and as far
> as I
> > > > know
> > > > > it
> > > > > > > is note quite final.
> > > > > > >
> > > > > > > In maya one would use hair follicles, which are stuck to the
> mesh
> > > in
> > > > uv
> > > > > > > space, and you'd constrain to one of these follicles whatever
> it
> > is
> > > > you
> > > > > > > want to be stuck onto the surface. It is a very straightforward
> > > > manner
> > > > > of
> > > > > > > solving this problem and I think having a uv space constraint
> in
> > > > > blender
> > > > > > as
> > > > > > > a separate method would be cool, until the new depsgraph lands
> (I
> > > > don't
> > > > > > > know of an eta for this).
> > > > > > >
> > > > > > > So that was just an idea. Obviously I does not work with
> > > overlapping
> > > > > uvs,
> > > > > > > and it breaks if uvs change, but that's the toll. Thoughts ?
> > > > > > >
> > > > > > > Hadrien
> > > > > > > _______________________________________________
> > > > > > > Bf-funboard mailing list
> > > > > > > Bf-funboard at blender.org
> > > > > > > http://lists.blender.org/mailman/listinfo/bf-funboard
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Douglas E Knapp, MSAOM, LAc.
> > > > > > _______________________________________________
> > > > > > Bf-funboard mailing list
> > > > > > Bf-funboard at blender.org
> > > > > > http://lists.blender.org/mailman/listinfo/bf-funboard
> > > > > >
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> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Douglas E Knapp, MSAOM, LAc.
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-- 
Douglas E Knapp, MSAOM, LAc.


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