Christoph Hormann wrote:
> 
> Are you sure this actually does bicubic interpolation?

No, as a matter of fact, I am not sure. I figured since the cells are 
blended with cubic_map, that meant it was using cubic interpolation. I 
am not a great mathematician, by any means. I am more of a "math hacker".

> The sample image 
> looks somewhat strange.

Indeed. I was displeased with it.

> Compare:
> 
> http://earth.imagico.de/img/hf_flat.jpg
> http://earth.imagico.de/img/iso_cubic.jpg
> 
> BTW MegaPOV offers bicubic interpolation for image maps internally.
> 
> Christoph

This explains things... I am using MegaPOV v1.1! There was no 
interpolate 3 with this version. Thanks for the heads-up, Christoph!

~Sam

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