[Sidefx-houdini-list] Link one ramp parameter to another

Emanuele Berti leleberti at gmail.com
Wed Nov 30 18:32:53 EST 2011


Hi Pablo,

I had the same problem a few days ago and I solved it simply dragging 'n'
dropping the "master" ramp from one node inside the Edit parameter
interface of the second node.

Hope that helps.

Cheers,
Emanuele


On 30 November 2011 17:00, <sidefx-houdini-list-request at sidefx.com> wrote:

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> Today's Topics:
>
>   1. Re: HDK: parse point/prim groups (Szymon Kapeniak)
>   2. Link one ramp parameter to another (Pablo Gim?nez)
>   3. Circles from three points (David Johnson)
>   4. Re: Circles from three points (Andrew Lyons)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 30 Nov 2011 12:39:57 +0100
> From: Szymon Kapeniak <szymon.kapeniak at gmail.com>
> Subject: Re: [Sidefx-houdini-list] HDK: parse point/prim groups
> To: sidefx-houdini-list at sidefx.com
> Message-ID:
>        <CAHDL27zvSMkvLewVKX3UzOR=2Bn5ys4sJ2wM20iq-CwqjCODJw at mail.gmail.com
> >
> Content-Type: text/plain; charset=ISO-8859-1
>
> 2011/11/29 Andrew Lyons <tstexture at gmail.com>:
> > <2c>
> > I'm thinking it's acceptable to ask a user to put down a "group geometry"
> > SOP and use the "Edit/Convert" functionality to prepare their data for
> your
> > tool by converting the prim groups to point groups there. This would be
> > consistent with Houdini in general.
>
> Yes it would, although in my particular case, it's not a matter of
> generality and coherence, but rather performance hit. Anyway, thanks
> for your input. Looks like getting manually the list of point is a way
> to go. I don't want to create/delete groups on the fly, again because
> it's slow - at least prior H12.
>
> thanks again,
> skk.
>
> > If you still want to do the convert for them, you might consider
> preserving
> > the generalized nature of your deformer tool. You could do this by
> wrapping
> > it in an otl with a group geometry SOP that does the convert. and
> perhaps a
> > switch SOP so users can toggle the convert on and off. You could also
> > expose a group mask at the top level for them to choose which groups to
> > convert. The group conversion then becomes part of the new higher level
> > tool - but it lives outside the deformer HDK code - which remains
> > unencumbered by the demands of this particular use-case.
> > </2c>
> >
> >
> >
> > On 28 November 2011 14:14, Szymon Kapeniak <szymon.kapeniak at gmail.com
> >wrote:
> >
> >> Thanks Andrew,
> >>
> >> 2011/11/28 Andrew Lyons <tstexture at gmail.com>:
> >> > It is possible to have a point group called "group1" and a prim group
> >> > called "group1" in the same geo detail. Note sure that you could
> avoiding
> >> > testing for the existence of both at all times...
> >> >
> >> > Perhaps exposing a "group type" switch/menu parm on the node would
> help
> >> > clarify user intent for the system?
> >> >
> >> > I might be missing something though.
> >>
> >> No, it was me blurring in fact simple question. You're right, groups
> >> can be ambiguous, Let me rephrase my question: how to start with
> >> primitive groups but utilitize at the end:
> >> duplicatePointSource/cookInputPointGroups/FOR_ALL_OPT_GROUP_POINTS
> >> combo (or any other performing similarly)?
> >>
> >> My Sop is a deformer working on points, but an user is providing
> >> mostly prim groups, how to manage this without explicitly building
> >> point group from prim vertices?
> >>
> >> thanks!
> >>
> >> > Cheers
> >> >
> >> >
> >> > On 28 November 2011 13:27, Szymon Kapeniak <szymon.kapeniak at gmail.com
> >> >wrote:
> >> >
> >> >> Hello,
> >> >> I'd like to modify an user specified group whenever it is a point or
> >> >> primitive group. The thing I'm doing in essence is that I iterate
> over
> >> >> points belonging to a point group, *or* laying on a primitives
> >> >> belonging to the prim group. Is there a dedicated way of doing this?
> >> >>
> >> >> Currently my sop uses SOP_Node::cookInputPointGroups() and iterates
> >> >> with FOR_ALL_OPT_GROUP_POINTS macro and I would love to leave it this
> >> >> way for, at least theoretical, optimization.
> >> >>
> >> >> Should I basically use things like, parseInputGroup(),
> >> >> cookInputAllGroups(), and then manually figure out type of a group,
> >> >> and in case of prim group, iterate over prim to add point to some
> >> >> array, or... I have better option?
> >> >>
> >> >> thanks!
> >> >> skk.
> >> >> _______________________________________________
> >> >> 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
> >> > =======================================
> >> > _______________________________________________
> >> > 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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> >>
> >>
> >>
> >> --
> >> skk.
> >> _______________________________________________
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> >> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
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> >
> >
> >
> > --
> > =======================================
> > Andrew D Lyons | Digital Artist | http://www.tstex.com
> > =======================================
> > _______________________________________________
> > 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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>
>
> --
> skk.
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 30 Nov 2011 12:41:49 +0000
> From: Pablo Gim?nez <pablogipi at gmail.com>
> Subject: [Sidefx-houdini-list] Link one ramp parameter to another
> To: Houdini Mailing List <sidefx-houdini-list at sidefx.com>
> Message-ID:
>        <CAKt3gg+ufiefADHPRVqEU1gHeFC0aMPHXp3AQ=coy+x5GaD24A at mail.gmail.com
> >
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi all.
> I have two ramps and I want t olink one to another.
> The usual Copy/Paste parameter doesn't work as expected.
> Is it possible to promote a ramp but not to lino one to another?
> I am sure lots of people have had this problem before.
> Any workarounds?
> Thanks
>
> --
> Un saludo
> Best Regards
> Pablo Gim?nez
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 30 Nov 2011 08:49:20 -0800
> From: David Johnson <daveinengland at gmail.com>
> Subject: [Sidefx-houdini-list] Circles from three points
> To: "sidefx-houdini-list at sidefx.com" <sidefx-houdini-list at sidefx.com>
> Message-ID:
>        <CAAXQmNfTPVFRNC-cNaHcWi-_GyBvhvgrmrGL7JaSXW9jm=x9ew at mail.gmail.com
> >
> Content-Type: text/plain; charset=ISO-8859-1
>
> Does anyone have a DA, script, or formula for building a circle from
> three points? I have a DA that we made here, but it is very slow and I
> figure there must be a faster way to do it.
>
> Dave
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 30 Nov 2011 08:55:57 -0800
> From: Andrew Lyons <tstexture at gmail.com>
> Subject: Re: [Sidefx-houdini-list] Circles from three points
> To: sidefx-houdini-list at sidefx.com
> Message-ID:
>        <CAF3KZauVgXyaBfhumW5R+OEOyrXUJqVrBVTWNdOTEBq=EYX9ew at mail.gmail.com
> >
> Content-Type: text/plain; charset=ISO-8859-1
>
> So the circle would only go through the two outside points - although the
> third point would help define the plane the circle lies on?
>
> On 30 November 2011 08:49, David Johnson <daveinengland at gmail.com> wrote:
>
> > Does anyone have a DA, script, or formula for building a circle from
> > three points? I have a DA that we made here, but it is very slow and I
> > figure there must be a faster way to do it.
> >
> > Dave
> > _______________________________________________
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> >
>
>
>
> --
> =======================================
> Andrew D Lyons | Digital Artist | http://www.tstex.com
> =======================================
>
>
> ------------------------------
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