[Sidefx-houdini-list] Add Sop

robert east east.robert at gmail.com
Wed Jan 11 15:59:47 EST 2012


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
>> >> > _______________________________________________
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>> >>
>> >>
>> >>
>> >> --
>> >> 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
>>
> _______________________________________________
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-- 
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"



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