Anyone know the math for Maya Pre/post scale to Nuke window scale u/v?
On Monday, November 9, 2015 at 11:00:30 AM UTC-8, adrian...@googlemail.com
wrote:
>
> Think I figured this out but haven't rigorously tested yet (Looked fine in
> viewport :D) - Just in case anyone else finds this thread with the same
> question of going from Nuke to Maya rather than the other way.
>
> (Nuke window translate U * (Nuke horizontal aperture / 25.4)) / 2 = Maya
> Horizontal film offset
>
> For V it's the same just substitute Nuke window translate U value for V
> value.
>
>
> On Monday, 9 November 2015 18:41:13 UTC, adrian...@googlemail.com wrote:
> > Vladislav - How did you do it?
> >
> > On Wednesday, 9 September 2015 20:36:15 UTC+1, Vladislav Akhtyrskiy
> wrote:
> > > Actually already did it)
> > >
> > > On Sep 9, 2015 3:35 PM, <vladislav....@framestore.com> wrote:
> > > Hi guys, sorry to bring this topic back.
> > >
> > >
> > >
> > > How to export
> > >
> > > window translate from Nuke to Maya?
> > >
> > >
> > >
> > > Thanks a lot.
> > >
> > >
> > >
> > > On Wednesday, 20 July 2011 04:13:20 UTC-4, dekekincaid.at.gmail dot
> com wrote:
> > >
> > > > BTW, nuke can read film offsets with fbx 2010 files. If you want to
> write your converter though, Nuke uses NDC coordinates. Here is the
> formula I use inside Nuke to read in maya film back offsets which you
> should be able to reverse engineer to export from inside Maya:
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > > window translate u:
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > > (2/haperture)*(mayaFilmOffset.x*25.4)
> > >
> > > >
> > >
> > > >
> > >
> > > > window translate v:
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > >
> (((root.format.h/root.format.w)*2)/vaperture)*(mayaFilmOffset.y*25.4)
> > >
> > > >
> > >
> > > >
> > >
> > > > set cut_paste_input [stack 0]
> > >
> > > >
> > >
> > > >
> > >
> > > > version 6.1 v3
> > >
> > > > push $cut_paste_input
> > >
> > > > Camera2 {
> > >
> > > > vaperture 10.08453016
> > >
> > > > win_translate {{(2/haperture)*(mayaFilmOffset.x*25.4)}
> > >
> > > >
> {(((root.format.h/root.format.w)*2)/vaperture)*(mayaFilmOffset.y*25.4)}}
> > >
> > > > name Camera2
> > >
> > > >
> > >
> > > >
> > >
> > > > selected true
> > >
> > > > xpos 2082
> > >
> > > > ypos -481
> > >
> > > > addUserKnob {20 MayaCameraSettings}
> > >
> > > > addUserKnob {12 mayaFilmOffset l "Maya Film Offset"}
> > >
> > > >
> > >
> > > >
> > >
> > > > mayaFilmOffset {-0.5 -0.1}
> > >
> > > > }
> > >
> > > >
> > >
> > > >
> > >
> > > > -deke
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > > On Tue, Jul 19, 2011 at 06:34, δΈ° <hxf...@gmail.com> wrote:
> > >
> > > >
> > >
> > > >
> > >
> > > > I would like to write a maya camera exporter to nuke, but I don't
> know
> > >
> > > >
> > >
> > > > how to translate maya camera's "film offset" attributes into nuke
> > >
> > > >
> > >
> > > > camera's "translate u & v" in the Projection tab.
> > >
> > > >
> > >
> > > > I did know it is possible to match the film offset attribute with
> the
> > >
> > > >
> > >
> > > > nuke equivalent, because I had done it a couple of days before. But
> I
> > >
> > > >
> > >
> > > > did it by adjusting the attribute, looking at the output image, and
> > >
> > > >
> > >
> > > > compared the one rendered with maya.
> > >
> > > >
> > >
> > > > nukeCam.translateU = mayaCam.horizontalFilmOffset/mayaCam.hfa did
> not
> > >
> > > >
> > >
> > > > do the trick.
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > > Sorry if there is any improper expression, for English is not my
> native tongue.
> > >
> > > >
> > >
> > > > --
> > >
> > > >
> > >
> > > > 2.6.32.26-175.fc12.x86_64
> > >
> > > >
> > >
> > > >
> > >
> > > >
> > >
> > > > --
> > >
> > > >
> > >
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> > >
> > > >
> > >
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