Cool - thanks Kim - I will give that a run.
I've done it by hand for now but could need more precision, so this looks
promising.
Morten Bartholdy
3D & VFX Artist
----- Original Message -----
From: "kim aldis" <xsi(at)kim-aldis.co.uk>
To: <XSI(at)Softimage.COM>
Sent: Friday, May 16, 2008 10:30 AM
Subject: RE: 2D trackers motion to nulls in 3D space
OK, try the attached. Instructions in the header. Jscript. Shout if you
get
problems.
-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
Behalf Of Sandy Sutherland
Sent: 16 May 2008 07:50
To: XSI(at)Softimage.COM
Subject: Re: 2D trackers motion to nulls in 3D space
Yep - you can expression nulls to the animation of the trackers - they
appear in the explorer under the fxtree node - but be aware that their
motion is only X & Y - so lie flat in Z - and also when you do this,
your null motion will be based on a 702 X 576 screen - so you will have
to do the calcs to scale it all down to suit in your viewport - try it
-
when you have got a moving null based on the track - add another at
0,0,0 then frame your screen - most likely the moving null will be very
far away!
S.
Morten Bartholdy wrote:
> I have a sequence which I cant solve in a 3D tracker (too few and
> inaccurate trackers) so I want to 2D track and move my tracking info
> into a 3D space and position in my scene. Is there a way to do that
> other than copy paste f-curves to nulls and line things up in the 3D
> camera frame?
>
> Morten Bartholdy
> 3D & VFX Artist
> ---------------------------------------------------------------------
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--
----------------------------------------------------------
Sandy Sutherland Digital Doodeller - TD
Blackginger (Cape) http://www.blackginger.tv
mailto:sandy(at)blackginger.tv
(P) (+27 21) 488 1188 (Cel) 0827893789
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