[Sidefx-houdini-list] Reg spec and diffuse passes

Andrew Lyons tstexture at gmail.com
Thu Oct 6 12:53:38 EDT 2011


Hi Vigneshwar,

You can't attach files when sending emails to this list. You can on the
forums though, and then send a link to them here.

Also, keep in mind that you are more likely to get a helpful answer if you
analyze and reduce your monolithic problem to a set of smaller problems, and
then fish for help with some of the smaller problems. Also, in breaking the
problem up you will often solve the problem yourself.

Cheers


On 6 October 2011 09:40, Vigneshwar Viswanathan
<vigneshwarv at hotmail.co.uk>wrote:

>
> Hi Andrew,Here is my file.This includes a scene file which is generated by
> a python script.I dont know where I have made a mistake in the python
> script.I have already posted in forum.So thought side effects mailing list
> would be even better to get answers.Thank you very much
>
>
> > From: sidefx-houdini-list-request at sidefx.com
> > Subject: Sidefx-houdini-list Digest, Vol 316, Issue 2
> > To: sidefx-houdini-list at sidefx.com
> > Date: Thu, 6 Oct 2011 11:32:43 -0400
> >
> > Send Sidefx-houdini-list mailing list submissions to
> >       sidefx-houdini-list at sidefx.com
> >
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> > or, via email, send a message with subject or body 'help' to
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> >
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> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of Sidefx-houdini-list digest..."
> >
> >
> > Today's Topics:
> >
> >    1. uv shell? (Ken Ouellette)
> >    2. isooffset volumes and pyro shader question (Meng-Yang Lu)
> >    3. Re: isooffset volumes and pyro shader question (Meng-Yang Lu)
> >    4. Re: uv shell? (Ken Ouellette)
> >    5. MA Digital Effects on YouTube (Phil Spicer)
> >    6. Re: Houdini Lens Distortion (Neil Scholes)
> >    7. Reg spec and diffuse passesI (Vigneshwar Viswanathan)
> >    8. Re: Reg spec and diffuse passesI (Andrew Lyons)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Wed, 5 Oct 2011 15:02:29 -0400
> > From: Ken Ouellette <ken.ouellette at gmail.com>
> > Subject: [Sidefx-houdini-list] uv shell?
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID:
> >       <
> CAMTBrKnYMTsk2B+TJuRsETB7HG+mcmZNNzo7FThJZX17qJKapw at mail.gmail.com>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > Hey,
> >
> > just curious if anyone a fast way to split the vert's along a UV
> > boundary of a model... so a point would have multiple UVs on it. it
> > would be like a vertexsplitSOP on a edge group.
> >
> > -k
> >
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Wed, 5 Oct 2011 12:08:07 -0700
> > From: Meng-Yang Lu <ntmonkey at gmail.com>
> > Subject: [Sidefx-houdini-list] isooffset volumes and pyro shader
> >       question
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID:
> >       <CAEaPtg4zHrSRH=
> LPoz2UjOUDUeQagNhUu1V86DjaEKjjbWGCHQ at mail.gmail.com>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > Trying to get some light scatter in my iso volumes using the pyro shader.
> > Do these things work together?  Not getting anything here so wondering if
> > I'm missing something or if there's another way of doing it.
> >
> > Thanks in advance,
> >
> > -Lu
> >
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Wed, 5 Oct 2011 13:11:37 -0700
> > From: Meng-Yang Lu <ntmonkey at gmail.com>
> > Subject: Re: [Sidefx-houdini-list] isooffset volumes and pyro shader
> >       question
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID:
> >       <CAEaPtg7a3Rs2pM3Ohx+yQo=
> Xxd_KwQ437E_pnsuyKA_QgwfMEA at mail.gmail.com>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > Nvrmnd.  Scatter in smoke tab not scatter tab.  Docs confused me.  So
> does
> > scroll bars apparently.
> >
> > -Lu
> >
> > On Wed, Oct 5, 2011 at 12:08 PM, Meng-Yang Lu <ntmonkey at gmail.com>
> wrote:
> >
> > > Trying to get some light scatter in my iso volumes using the pyro
> shader.
> > > Do these things work together?  Not getting anything here so wondering
> if
> > > I'm missing something or if there's another way of doing it.
> > >
> > > Thanks in advance,
> > >
> > > -Lu
> > >
> >
> >
> > ------------------------------
> >
> > Message: 4
> > Date: Wed, 5 Oct 2011 17:32:27 -0400
> > From: Ken Ouellette <ken.ouellette at gmail.com>
> > Subject: Re: [Sidefx-houdini-list] uv shell?
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID:
> >       <
> CAMTBrKmtbM6TG_W7aDAxiY3h1tfQ1ewUgcXqyDSFQnEvA8D5+Q at mail.gmail.com>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > well i feel silly
> >
> > vertexSplitSOP... based on attribute of UV does it, promoting to point
> > attribute allows me to use the $MAPU $MAPV $MAPW in the Position
> > fields in the pointSOP.
> >
> > Neat!
> > -k
> >
> > On Wed, Oct 5, 2011 at 3:02 PM, Ken Ouellette <ken.ouellette at gmail.com>
> wrote:
> > > Hey,
> > >
> > > just curious if anyone a fast way to split the vert's along a UV
> > > boundary of a model... so a point would have multiple UVs on it. it
> > > would be like a vertexsplitSOP on a edge group.
> > >
> > > -k
> > >
> >
> >
> > ------------------------------
> >
> > Message: 5
> > Date: Thu, 6 Oct 2011 08:44:32 +0100
> > From: Phil Spicer <PSpicer at bournemouth.ac.uk>
> > Subject: [Sidefx-houdini-list] MA Digital Effects on YouTube
> > To: "sidefx-houdini-list at sidefx.com" <sidefx-houdini-list at sidefx.com>
> > Cc: SESI Support <support at sidefx.com>,        "www.sidefx.com Fraser"
> >       <janet at sidefx.com>, Kim
> > Message-ID: <DC14BDDD-B86D-4AB3-998D-DA88FE919E95 at bournemouth.co.uk>
> > Content-Type: text/plain; charset="Windows-1252"
> >
> > Hi,
> >
> > It is my great pleasure to inform you about our new MA Digital Effects
> Graduates. They have just completed their studies with us, and are keen to
> find gainful employment. You can see this new graduate work on our YouTube
> website:
> >
> > http://www.youtube.com/user/NCCADigitalFX
> >
> > All this work has been created using Houdini and Nuke as the primary
> software.
> >
> > I am also happy to chat directly with you about any of our graduates, or
> can point you towards graduates who may have specialisms you are currently
> looking for. Please feel free to get in touch. We also have coming up our
> Bournemouth University Postgraduate Animation Degree Show being held in
> London on Friday 14th October. It would be great to see you there if you can
> make it. Details of the Degree Show are also included at the end of this
> email.
> >
> > Kind regards,
> >
> > Phil.
> >
> >
> > Philip Spicer
> > Programme Coordinator - MA Digital Effects
> > National Centre for Computer Animation
> > Bournemouth University - UK
> >
> > http://www.youtube.com/user/NCCADigitalFX
> >
> >
> >
> > NCCA - Bournemouth University
> > Masters Degree Show 2011
> > MSc Computer Animation and Visual Effects,
> > MA 3D Computer Animation,
> > MA Digital Effects
> > Friday 14 October 2011
> > 12:00  - 17:00
> > The National Centre for Computer Animation will be staging its annual
> postgraduate degree show for 2011 at Framestore and MPC; and we would be
> delighted if you come along to the show, booking is not required.
> > Featuring the work of over 80 graduating students, productions will be
> playing throughout the afternoon in the screening theatres of both venues.
> >
> > You will also have an opportunity to meet with NCCA staff and the
> graduating students whose work is on display. DVD copies of the show reel
> will be provided along with booklets containing the contact details for our
> most recent graduates. Refreshments available.
> > Please note: The show will be hosted at two venues this year.
> >
> >
> > MA 3D and MSc Computer Animation will be in the screening room at:
> >
> > Framestore
> > 19-23 Wells Street
> > London
> > W1T 3PQ
> >
> > MA Digital Effects will be in the screening room at:
> >
> > MPC (The Moving Picture Company)
> > 127 Wardour Street
> > Soho, London
> > W1F 0NL
> >
> > This email is intended only for the person to whom it is addressed and
> may contain confidential information. If you have received this email in
> error, please notify the sender and delete this email, which must not be
> copied, distributed or disclosed to any other person.
> > Any views or opinions presented are solely those of the author and do not
> necessarily represent those of Bournemouth University or its subsidiary
> companies. Nor can any contract be formed on behalf of the University or its
> subsidiary companies via email.
> >
> >
> >
> >
> >
> > ------------------------------
> >
> > Message: 6
> > Date: Thu, 6 Oct 2011 15:31:46 +0100
> > From: Neil Scholes <neil at uvfilms.co.uk>
> > Subject: Re: [Sidefx-houdini-list] Houdini Lens Distortion
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID: <F898039D-70D5-49E8-A55C-7627E4304275 at uvfilms.co.uk>
> > Content-Type: text/plain; charset=us-ascii
> >
> > Hi Luc - cheers for that - ill check that technique out
> >
> > By the way - anyone who's interested - you can now get Nuke plugins from
> Science D Visions 3DEqualiser - so you can warp or unwarp images using the
> 3DE lens distortion model - they seem to work great
> >
> >
> >
> >
> >
> >
> > Neil Scholes
> >
> > +44(0) 7977 456 197
> > www.uvfilms.co.uk
> >
> >
> >
> >
> >
> >
> > On 4 Oct 2011, at 18:50, Luc Froehlicher wrote:
> >
> > > about this subject , we usually warp an UVmap once in 3de warp tool
> than use the "deform" node in Houdini or "STMap" in nuke , it's much faster
> than 3de warp tools.
> > > luc
> > >
> > > On 09/30/2011 04:59 PM, Neil Scholes wrote:
> > >> Hi Andrew
> > >>
> > >> well it would save a ton of hassle going through 3DE's WARP tools -
> and ultimately some time.
> > >>
> > >>
> > >>
> > >>
> > >> Neil Scholes
> > >>
> > >> +44(0) 7977 456 197
> > >> www.uvfilms.co.uk
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> > >> On 30 Sep 2011, at 15:47, Andrew Lyons wrote:
> > >>
> > >>
> > >>> Most places do that in comp rather than baking it into renders. (That
> way
> > >>> you can modify your distortion field and not have to re-render
> everything.)
> > >>> Is there a reason why you need to bake the distortion into the
> render?
> > >>>
> > >>> Cheers
> > >>>
> > >>>
> > >>> On 30 September 2011 07:46, Neil Scholes<neil at uvfilms.co.uk>  wrote:
> > >>>
> > >>>
> > >>>> Hi -
> > >>>>
> > >>>> Long shot but anyone out there developed a lens distortion shader
> for a
> > >>>> Houdini camera - copying the classic and anamorphic lens models from
> 3D
> > >>>> Equalizer 4?
> > >>>>
> > >>>> Any pointers gratefully welcome
> > >>>>
> > >>>> Thanks
> > >>>>
> > >>>> Neil Scholes
> > >>>>
> > >>>> +44(0) 7977 456 197
> > >>>> www.uvfilms.co.uk
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>> _______________________________________________
> > >>>> 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
> > >>>
> > >>>
> > >> _______________________________________________
> > >> 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
> > >
> >
> >
> >
> > ------------------------------
> >
> > Message: 7
> > Date: Thu, 6 Oct 2011 16:10:58 +0100
> > From: Vigneshwar Viswanathan <vigneshwarv at hotmail.co.uk>
> > Subject: [Sidefx-houdini-list] Reg spec and diffuse passesI
> > To: <sidefx-houdini-list at sidefx.com>
> > Message-ID: <DUB101-W171BA651C17BE16AF14959E8F90 at phx.gbl>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> >
> > hi there,my first post in the houdini list.1)I have been struggling with
> rendering spec and reflection passes using image planes?     I have set the
> vex variable to combined reflect for the image plane,reflection seems ok.but
> for combined specular i was not able to see any image getting rendered
> out.all I see is a black screen
> > 2) I have been using takes to render out reflection and spec pass and
> everything seemed to look ok.but when i decided to do that using
> scripting.takes are not working perfectly.             below is the code
> >
> sh=hou.node('obj').createNode('shopnet','testshop')msurf=hou.galleries.galleryEntries("mantrasurface")[0]node=hou.node('/obj')klig1=node.createNode('hlight','KeyLight1')flig1=node.createNode('hlight','FillLight1')rlig1=node.createNode('hlight','RimLight1')
> >
> klig1.moveToGoodPosition()flig1.moveToGoodPosition()rlig1.moveToGoodPosition()
> >
> > #position the
> lightsklig1.parm('tx').set('536.254')klig1.parm('ty').set('489.605')klig1.parm('tz').set('-91.884')klig1.parm('rx').set('-39.0293')klig1.parm('ry').set('100.776')klig1.parm('rz').set('9.132')
> >
> flig1.parm('tx').set('-356.148')flig1.parm('ty').set('475.435')flig1.parm('tz').set('-573.03')flig1.parm('rx').set('-30.582')flig1.parm('ry').set('206.504')flig1.parm('rz').set('7.632')
> >
> rlig1.parm('tx').set('-540.86')rlig1.parm('ty').set('402.254')rlig1.parm('tz').set('596.632')rlig1.parm('rx').set('-25.92')rlig1.parm('ry').set('321.352')rlig1.parm('rz').set('-4.37')
> >
> > msurf.createChildNode(hou.node("obj/testshop"))
> > rp=hou.node('out').createNode('ifd','testmantra')#adds a
> takehou.hscript('takeadd -c -p Main spec')#sets to specular
> takehou.hscript('takeset spec')
> > hsp=hou.node('out/testmantra/')hsp.parm('take').set('spec')
> > #make  it livehou.hscript('takeautomode on')#include all the objects
> within the path definedhou.hscript('takeinclude /obj/ *')
> > #hou.hscript('takeinclude /shop/
> *')#changeshou.parm('obj/KeyLight1/shadow_type').set(0)hou.parm('obj/FillLight1/shadow_type').set(0)hou.parm('obj/RimLight1/shadow_type').set(0)hou.parm('obj/testshop/mantrasurface/diff_enable').set(0)hou.parm('obj/testshop/mantrasurface/refl_objs').set(0)#hou.hscript('takeset
> Main')
> > hsp.parm('take').set('Main')#hou.hscript('takeautomode off')
> >
> >
> > hou.hscript('takeadd -c -p Main ReflectionPass')hou.hscript('takeset
> ReflectionPass')hou.hscript('takeautomode on')
> > hrfl=hou.node('out/testmantra/')hrfl.parm('take').set('ReflectionPass')
> > hou.hscript('takeinclude /obj *')#hou.hscript('takeinclude /shop/
> *')hou.parm('obj/KeyLight1/shadow_type').set(0)hou.parm('obj/FillLight1/shadow_type').set(0)hou.parm('obj/RimLight1/shadow_type').set(0)hou.parm('obj/testshop/mantrasurface/diff_enable').set(1)hou.parm('obj/testshop/mantrasurface/refl_objs').set(1)hou.hscript('takeset
> Main')hsp.parm('take').set('Main')
> >
> > #hou.hscript('takeautomode off')
> >
> > box = node.createNode('geo', 'box',
> run_init_scripts=True)box.createNode('box')bo=hou.node('/obj/box/file1')bo.destroy()
> >
> >
> grid=node.createNode('geo','grid',run_init_scripts=True)grid.createNode('grid')gr=hou.node('obj/grid/file1')gr.destroy()
> >
> > please correct me if im wrong.
> >
> > ------------------------------
> >
> > Message: 8
> > Date: Thu, 6 Oct 2011 08:32:38 -0700
> > From: Andrew Lyons <tstexture at gmail.com>
> > Subject: Re: [Sidefx-houdini-list] Reg spec and diffuse passesI
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID:
> >       <
> CAF3KZaueipFcEAOUoX8LXajF5Jwy3TmboFtvk0rE0krg59AAcw at mail.gmail.com>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > Hi Vigneshwar,
> >
> > It's difficult to advise on your problems without a scene file, and
> without
> > fully understanding your goals. This is especially the case in regards to
> > your second problem. You might try reducing that problem into multiple
> > smaller problems and then solving each one of those in turn inside the
> > Houdini UI. If you get stuck with one of these smaller problems it will
> be
> > more possible for people here to advise you if you post here, or on the
> > forums.
> >
> > In regards to your first problem, if you are sure you have set your ROPs
> up
> > correctly, then problems exporting default image planes from a default
> SESI
> > shader is something SESI support can probably best advise on.
> >
> > Good luck!
> >
> > Cheers
> >
> >
> > On 6 October 2011 08:10, Vigneshwar Viswanathan
> > <vigneshwarv at hotmail.co.uk>wrote:
> >
> > >
> > > hi there,my first post in the houdini list.1)I have been struggling
> with
> > > rendering spec and reflection passes using image planes?       I have
> set
> > > the vex variable to combined reflect for the image plane,reflection
> seems
> > > ok.but for combined specular i was not able to see any image getting
> > > rendered out.all I see is a black screen
> > > 2) I have been using takes to render out reflection and spec pass and
> > > everything seemed to look ok.but when i decided to do that using
> > > scripting.takes are not working perfectly.               below is the
> code
> > >
> > >
> sh=hou.node('obj').createNode('shopnet','testshop')msurf=hou.galleries.galleryEntries("mantrasurface")[0]node=hou.node('/obj')klig1=node.createNode('hlight','KeyLight1')flig1=node.createNode('hlight','FillLight1')rlig1=node.createNode('hlight','RimLight1')
> > >
> > >
> klig1.moveToGoodPosition()flig1.moveToGoodPosition()rlig1.moveToGoodPosition()
> > >
> > > #position the
> > >
> lightsklig1.parm('tx').set('536.254')klig1.parm('ty').set('489.605')klig1.parm('tz').set('-91.884')klig1.parm('rx').set('-39.0293')klig1.parm('ry').set('100.776')klig1.parm('rz').set('9.132')
> > >
> > >
> flig1.parm('tx').set('-356.148')flig1.parm('ty').set('475.435')flig1.parm('tz').set('-573.03')flig1.parm('rx').set('-30.582')flig1.parm('ry').set('206.504')flig1.parm('rz').set('7.632')
> > >
> > >
> rlig1.parm('tx').set('-540.86')rlig1.parm('ty').set('402.254')rlig1.parm('tz').set('596.632')rlig1.parm('rx').set('-25.92')rlig1.parm('ry').set('321.352')rlig1.parm('rz').set('-4.37')
> > >
> > > msurf.createChildNode(hou.node("obj/testshop"))
> > > rp=hou.node('out').createNode('ifd','testmantra')#adds a
> > > takehou.hscript('takeadd -c -p Main spec')#sets to specular
> > > takehou.hscript('takeset spec')
> > > hsp=hou.node('out/testmantra/')hsp.parm('take').set('spec')
> > > #make  it livehou.hscript('takeautomode on')#include all the objects
> within
> > > the path definedhou.hscript('takeinclude /obj/ *')
> > > #hou.hscript('takeinclude /shop/
> > >
> *')#changeshou.parm('obj/KeyLight1/shadow_type').set(0)hou.parm('obj/FillLight1/shadow_type').set(0)hou.parm('obj/RimLight1/shadow_type').set(0)hou.parm('obj/testshop/mantrasurface/diff_enable').set(0)hou.parm('obj/testshop/mantrasurface/refl_objs').set(0)#hou.hscript('takeset
> > > Main')
> > > hsp.parm('take').set('Main')#hou.hscript('takeautomode off')
> > >
> > >
> > > hou.hscript('takeadd -c -p Main ReflectionPass')hou.hscript('takeset
> > > ReflectionPass')hou.hscript('takeautomode on')
> > > hrfl=hou.node('out/testmantra/')hrfl.parm('take').set('ReflectionPass')
> > > hou.hscript('takeinclude /obj *')#hou.hscript('takeinclude /shop/
> > >
> *')hou.parm('obj/KeyLight1/shadow_type').set(0)hou.parm('obj/FillLight1/shadow_type').set(0)hou.parm('obj/RimLight1/shadow_type').set(0)hou.parm('obj/testshop/mantrasurface/diff_enable').set(1)hou.parm('obj/testshop/mantrasurface/refl_objs').set(1)hou.hscript('takeset
> > > Main')hsp.parm('take').set('Main')
> > >
> > > #hou.hscript('takeautomode off')
> > >
> > > box = node.createNode('geo', 'box',
> > >
> run_init_scripts=True)box.createNode('box')bo=hou.node('/obj/box/file1')bo.destroy()
> > >
> > >
> > >
> grid=node.createNode('geo','grid',run_init_scripts=True)grid.createNode('grid')gr=hou.node('obj/grid/file1')gr.destroy()
> > >
> > > please correct me if im wrong.
> > > _______________________________________________
> > > 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
> >
> >
> > End of Sidefx-houdini-list Digest, Vol 316, Issue 2
> > ***************************************************
>
> _______________________________________________
> 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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