> This is impressive.

Thanks :-)

> Although I can see the transition point, I can't
> figure out how you got the projection and lighting to match up. (It
> looks orthographic, but there's a horizon.)

I have used a combination of tricks to make the illusion work. Each helps to
obfuscate the others, so it is indeed not obvious how the image is created. I
don't plan to reveal these tricks though. I believe the image is more intriguing
without the mystery behind the illusion being revealed.

I am happy to share all non-illusion related details of the scene though, should
anyone be interested (e.g. macros for generating the path, for placing the
grass, etc). These are fairly mundane though, so I am not sure if anyone cares.

Cheers,
Erwin

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