The way I did this was to place a rig on the camera, a bone with a rectangle
parented who's size and proportions were tied into camera fov and distance
of rectangle from camera. That way you can take the xy cords of the tracker
directly onto nulls parented to the rectangle. You have the added advantage
that you get free depth on the nulls.
I may have a script, give me 20.
> -----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
> > ---------------------------------------------------------------------
> ---
> >
> >
> > No virus found in this incoming message.
> > Checked by AVG.
> > Version: 8.0.100 / Virus Database: 269.23.16/1445 - Release Date:
> 5/15/2008 7:25 PM
> >
>
> --
> ----------------------------------------------------------
> Sandy Sutherland Digital Doodeller - TD
> Blackginger (Cape) http://www.blackginger.tv
> mailto:sandy(at)blackginger.tv
> (P) (+27 21) 488 1188 (Cel) 0827893789
> ----------------------------------------------------------
>
> ---
> Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in
> body:
> unsubscribe xsi
---
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
unsubscribe xsi
