[Sidefx-houdini-list] ndc to world matrix

Graham Thompson captainhammy at gmail.com
Thu Jul 29 11:46:49 EDT 2010


There is not.  I posted some workarounds on your thread on the forum however.

On Thu, Jul 29, 2010 at 8:42 AM, katrin schmid <Katisss at gmx.de> wrote:
> hi,
> thanks for that, its surprisingly
> hard to find. I was wondering if there a way of querying
> worldTransform() in time for an animated camera?
> Regards,
> katrin
>
> -------- Original-Nachricht --------
>> Datum: Thu, 29 Jul 2010 08:06:59 -0700
>> Von: Graham Thompson <captainhammy at gmail.com>
>> An: sidefx-houdini-list at sidefx.com
>> Betreff: Re: [Sidefx-houdini-list] ndc to world matrix
>
>> The functions dealing with view transforms were added for Houdini 11
>> so they aren't available in previous versions.
>>
>> You can kind of hack it by creating a dummy camera node, calling
>> hou.GeometryViewport.saveViewToCamera on that camera, extract the
>> transform from the camera then delete it.
>>
>> viewer = toolutils.sceneViewer()
>> viewport = viewer.curViewport()
>> cam = hou.node("/obj").createNode("camera")
>> viewport.saveViewToCamera(cam)
>> xform = cam.worldTransform()
>> cam.destroy()
>>
>> On Thu, Jul 29, 2010 at 7:40 AM, katrin schmid <Katisss at gmx.de> wrote:
>> > hi,
>> > so i found this here:
>> >>>>>>>>>
>> > Get the viewport's settings object
>> > settings = viewport.settings()
>> >
>> > Among the most useful methods on the settings object are viewTransform()
>> and setViewTransform(), which get and set the viewport’s transformation
>> matrix respectively.
>> > http://www.sidefx.com/docs/houdini9.5/ref/windows/edittool
>> >>>>>>>>>
>> >
>> > Unfortunately i cant find viewTransform() in houdini 10 python
>> > or figure out how to get it. Anybody knows?
>> > Thank you,
>> > karin
>> >
>> >
>> > -------- Original-Nachricht --------
>> >> Datum: Wed, 28 Jul 2010 10:00:12 +0200
>> >> Von: "katrin schmid" <Katisss at gmx.de>
>> >> An: sidefx-houdini-list at sidefx.com
>> >> Betreff: Re: [Sidefx-houdini-list] ndc to world matrix
>> >
>> >> hi,
>> >> a python module inside a render node,
>> >> i will use whatever works :)
>> >> Regards,
>> >> katrin
>> >>
>> >> -------- Original-Nachricht --------
>> >> > Datum: Wed, 28 Jul 2010 00:57:09 -0700
>> >> > Von: Alex Lim <list at poh-yee.com>
>> >> > An: sidefx-houdini-list at sidefx.com
>> >> > Betreff: Re: [Sidefx-houdini-list] ndc to world matrix
>> >>
>> >> > Hi Katrin, is this in VOP net or VEX code? There is a Transform VOP
>> that
>> >> > should let you convert from world to NDC. Will this work for you?
>> >> >
>> >> >
>> >> > Cheers,
>> >> > Alex
>> >> >
>> >> >
>> >> >
>> >> > On 7/28/2010 12:37 AM, katrin schmid wrote:
>> >> > > hi,
>> >> > > i am trying to write information into an exr's metadata
>> >> > > and be interested in the worldToNDC matrix.
>> >> > > Do i need to calculate it all myself?
>> >> > > Best Regards,
>> >> > > katrin
>> >> >
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