This relates to my earlier post here...

http://news.povray.org/povray.binaries.images/thread/%3Cweb.5106f53bd9b7ab13c2d977c20%40news.povray.org%3E/

An example of how Rune's ILLUSION.INC code can work in animation. It's a
purposely crude test--just some simple scrambled objects overlayed with the
'illusion' image, to show its basic function of eliminating z-perspective in the
image projection. BTW, the camera moves 'off-axis' far more than it should...
which might be obvious. ;-)

The animation is .avi file, compressed using the Xvid codec. Sorry about the
quality--it had to be heavily compressed to fit here.  And the rather low-rez
image I used, a download of a cathedral, has some artifacts of its own.

The row of foreground objects is to help clarify the camera movement; otherwise,
the scene can be disorienting!

At the exact halfway point in the animation segments, everything lines up
perfectly. In real use, the floor plane wouldn't be covered with the image, just
the (more-accurately-made!) building shapes.

For the 2nd segment, I carefully matted the image in Photoshop and added a few
more boxes, to show the 'quasi-3D' aspect of the technique. The alpha-matte
helps to further disguise the crude nature of the underlying shapes--a nice
discovery.

The camera is purposely not positioned where it *should* be in space to align to
the image (which would correspond roughly to the location of the original
real-life camera, relative to the cathedral--scaled down of course.) Same for
the camera angle. I wanted to see the effect of going outside those bounds. In
actual use, both of those parameters would need better matching, to 'sell' the
visual result.

If commenting, use my earlier post; that keeps it all in one place. Thanks!

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Attachments:
Download 'cathedral_illusion.avi.dat' (3985 KB)