Nicolas Alvarez wrote:
> But using some creative coding, I can get an isosurface out of a
> heightfield. I lose almost all interpolation though; it looks like a
> heightfield without the "smooth" parameter.

http://imagebin.ca/view/5lUU-ge.html

Source attached.

"interpolate 2" in the image_map is absolutely necessary. Without
interpolation, it like a bunch of square blocks, one for each pixel; the
function gradient and the render times go through the roof, and it looks
ugly. With it, the isosurface looks like a non-smoothed heightfield.

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