Vincent Le Chevalier wrote:
> 
> I posted a macro version of my technique under your thread with the same
> subject in povray.binaries.scene-files. I wouldn't say it is quick...
> But I don't really know if a quicker implementation can be done.

Okay, I'll give it a look. There's always something to learn from 
techniques like this :)

> Of course since it is in Megapov now the incentive to optimize is a bit
> diminished :-)

Tell me about it!

> However, as I said in my message over at povray.binaries.scene-files, I
> believe you could make interesting things by tweaking the computation a
> bit. Since the bicubic method needs the slope at each grid point, you
> could specify anything, not necessarily deducing it from the data as
> I've done.
> 
> I also made a new comparison of the bilinear and bicubic methods using
> this new scene file and a lower-res height field, see the attachment.
> 
> Regards,

Looks good. Perfect, even.

~Sam

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