[Sidefx-houdini-list] op: and point cloud

guillaume laforge guillaume.laforge.3d at gmail.com
Mon Feb 18 10:03:22 EST 2008


>Alright, I'm completely out of my depth on this but since you brought up
>Cops...

Sounds interesting. We could store P, N and PTAREA in a map via a COP. But
as the multiSSS vop use the pcopen function, I don't think we can use
a texture file for the point cloud file.

Cheers

Guillaume


On Feb 18, 2008 3:17 PM, Peter Robbinson <probbins at sympatico.ca> wrote:

> Alright, I'm completely out of my depth on this but since you brought up
> Cops...
> Could you take advantage of the deep raster P or Pz and get your
> information from Cops?
> The composite renderer will reload files into the compositor as they are
> rendered from mantra.
>
> PeterR
>
> guillaume laforge wrote:
> > I see, of course, Mantra can't read directly a sop node. As we can use
> op:/
> > in a COP I thought it was possible from Mantra too :-P.
> >
> > Thanks Louis and Peter.
> >
> > Cheers
> >
> > Guillaume
> >
> > On Feb 18, 2008 12:57 PM, Peter Bowmar <pbowmar at gmail.com> wrote:
> >
> >
> >> I think all it requires is taking the geometry referenced by the op:
> >> and putting that into the IFD, then some syntax in the IFD that would
> >> "load" that geometry from the IFD to use for the pciterate() etc. I'm
> >> not saying that's trivial, but I have vague ideas how I might do it in
> >> Soho. not that I have time, mind you ...
> >>
> >> Cheers,
> >>
> >> Peter B
> >>
> >> On 18/02/2008, Louis Dunlevy <ld at dneg.com> wrote:
> >>
> >>> Yeah, from what I gather it would require Mantra to run hscript
> commands
> >>> on the fly which it can't currently do..
> >>>
> >>> Peter Bowmar wrote:
> >>>
> >>>> Hi Guillaume,
> >>>>
> >>>> As far as I know, you can't do this. It's a general problem with
> >>>> things like pciterate, metaloops and other things. There is no way
> >>>> (that I know of) to access these things directly from the IFD file. I
> >>>> hope for it in 9.0, then in 9.1 and now I hope for it in 10.
> >>>>
> >>>> Cheers,
> >>>>
> >>>> peter B
> >>>>
> >>>> On 18/02/2008, guillaume laforge <guillaume.laforge.3d at gmail.com>
> >>>>
> >> wrote:
> >>
> >>>>> Hi,
> >>>>>
> >>>>> I'm working on a Shop using "multiSSS" vops.  As I'm tweaking the
> >>>>>
> >> scatter
> >>
> >>>>> sop to find the best distribution for the irradiance samples for the
> >>>>>
> >> SSS
> >>
> >>>>> point cloud I would like to use "op:/obj/MyGeo/MyPointCloudSop" to
> >>>>>
> >> avoid to
> >>
> >>>>> write
> >>>>> to file before a rendering preview. But it doesn't work...
> >>>>>
> >>>>> Is it possible to use a point cloud from a sop instead of a disk
> file
> >>>>>
> >> with
> >>
> >>>>> the multiSSS ?
> >>>>>
> >>>>> Cheers
> >>>>>
> >>>>> --
> >>>>> Guillaume Laforge | La Maison
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> >
> >
>
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