[Sidefx-houdini-list] Add Sop

Andrew Lyons tstexture at gmail.com
Wed Jan 11 16:34:17 EST 2012


I once heard that you could do anything with an add sop and a point sop.


On 11 January 2012 12:59, robert east <east.robert at gmail.com> wrote:

> Hi ,
>     I was planning to jam it up on the exchange when H12 comes out as
> Ive just updated it
>
> Rob
>
>
> On Thu, Jan 12, 2012 at 1:42 AM, nicholas pliatsikas
> <nicholas.pliatsikas at gmail.com> wrote:
> > I think ive done similar to this in the past but not as a new node type,
> > just an expression on a null to follow the position of a point. I wouldnt
> > mind checking it out. Maybe put it on the exchange at sidefx.com? :¬) it
> > sounds pretty useful to have a HDA to extract translations from the
> > centroid of an object ;¬)
> >
> > If you havent used the rivet node much, you should take a look at it. its
> > pretty robust and also produces stable rotations with no flipping, also
> > useful when you have no transforms and need rotations extracted
> > from geometry.
> >
> > On Wed, Jan 11, 2012 at 11:10 AM, robert east <east.robert at gmail.com>
> wrote:
> >
> >> Hey Nicholas,
> >>                I take an empty geometry node and use
> >> point("../getdata/add_createhook",0,"P",0)   etc etc  . So this sucks
> >> out the transform data upto the object level on a new node, then wrap
> >> all of that up in a hda .Using python in the hda the new object node
> >> is used to provide the transforms out.
> >> I use the tool to build a bound from multiple objects / single objects
> >> ie to get lights / shadow camera to track with moving objects, Ive
> >> also used it in DOP's to drive a resize container, its very handy when
> >> you have no object level transforms ! .
> >>
> >> I am more than happy to share the tool if you want it off list .
> >>
> >> Rob
> >>
> >>
> >>
> >>
> >>
> >> On Wed, Jan 11, 2012 at 9:25 PM, nicholas pliatsikas
> >> <nicholas.pliatsikas at gmail.com> wrote:
> >> > How are you generating the transform from that data?
> >> > I use a rivet todo something similar, im wondering if your method is
> >> faster
> >> > etc
> >> > Cheers
> >> > Nick
> >> >
> >> > On Wed, Jan 11, 2012 at 3:40 AM, robert east <east.robert at gmail.com>
> >> wrote:
> >> >
> >> >> I use the add sop to create a point at the centre of bounding box
> >> >> using ( centroid("../OUT",D_X)   etc, simple enough > The point data
> >> >> then gets pulled out and used at the object level to create a hook
> >> >> object > which it turn outputs transforms and can be used for all
> >> >> sorts of Houdini trickery >
> >> >>
> >> >> Rob
> >> >>
> >> >>
> >> >>
> >> >> On Wed, Jan 11, 2012 at 2:06 PM, Rangi Sutton <rangi at kanuka.com.au>
> >> wrote:
> >> >> > Obviously... it's the ironic sop... mostly I use it to delete
> geometry
> >> >> > and keep points.
> >> >> >
> >> >> > Best trick with it is to add a particle system. If you have a big
> >> >> > point cloud (output of scatter sop perhaps) you can only view it as
> >> >> > points in the viewport. Use add sop to add particle system, and now
> >> >> > you can view it as particles, with point colouring, as streaks or
> >> >> > points.. etc.. very handy.
> >> >> >
> >> >> > Prolly other tricks too...
> >> >> >
> >> >> > r.
> >> >> >
> >> >> >
> >> >> > On 11 January 2012 12:56, Alex Czetwertynski <disciple1 at gmail.com>
> >> >> wrote:
> >> >> >> Hello
> >> >> >>
> >> >> >> I'm putting together a short Node based tutorial series and am
> >> >> currently preparing one on the Add SOP.
> >> >> >> I am wondering if anybody on this list has some interesting
> tidbits
> >> of
> >> >> information about this SOP, maybe some unusual uses for it, or times
> >> when
> >> >> it helped do something it was not necessarily designed for?
> >> >> >>
> >> >> >> Thanks
> >> >> >> Alex
> >> >> > _______________________________________________
> >> >> > Sidefx-houdini-list mailing list
> >> >> > Sidefx-houdini-list at sidefx.com
> >> >> > https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
> >> >>
> >> >>
> >> >>
> >> >> --
> >> >> Robert East
> >> >>
> >> >> Sydney Australia
> >> >>  +61 (0) 299672804
> >> >> "Houdini is a pipeline in a box. Maya is a box that you have to build
> >> >> a pipeline for"
> >> >> _______________________________________________
> >> >> Sidefx-houdini-list mailing list
> >> >> Sidefx-houdini-list at sidefx.com
> >> >> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
> >> >>
> >> > _______________________________________________
> >> > Sidefx-houdini-list mailing list
> >> > Sidefx-houdini-list at sidefx.com
> >> > https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
> >>
> >>
> >>
> >> --
> >> Robert East
> >>
> >> Sydney Australia
> >>  +61 (0) 299672804
> >> "Houdini is a pipeline in a box. Maya is a box that you have to build
> >> a pipeline for"
> >> _______________________________________________
> >> Sidefx-houdini-list mailing list
> >> Sidefx-houdini-list at sidefx.com
> >> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
> >>
> > _______________________________________________
> > Sidefx-houdini-list mailing list
> > Sidefx-houdini-list at sidefx.com
> > https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
>
>
>
> --
> Robert East
>
> Sydney Australia
>  +61 (0) 299672804
> "Houdini is a pipeline in a box. Maya is a box that you have to build
> a pipeline for"
> _______________________________________________
> Sidefx-houdini-list mailing list
> Sidefx-houdini-list at sidefx.com
> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
>



-- 
=======================================
Andrew D Lyons | Digital Artist | http://www.tstex.com
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