Kenneth napsal(a):
> For the fun of it, I re-coded my original method to trace the height_field in a
> step-by-step linear fashion, rather than randomly. (The statistical process
> still uses rand, though.) And for added fun, I let the found y-values of the HF
> determine (somewhat) the scale of the small spheres; the result looks a bit like
> halftone printing. (In that process, the printed dots vary in size.) The photo
> is of Sophia Loren in the film EL CID--a beautiful film to study
> for its lighting and image composition, BTW.
> 
> The only value that needs changing here is foobar; it determines the "scanning
> resolution" of the traces (and automatically scales the spheres.) It can be any
> value at all; it doesn't depend on the pixel resolution of the image_map. I.e.,
> the trace rays don't *need* to hit a HF triangle vertex / image_map pixel in
> order to return a valid height value; they can hit the triangles
> anywhere.
> 
> One of the reasons I decided to try this linear tracing scheme was that it might
> have some relevance to the time-saving 'tiling' idea that's been mentioned (re:
> eliminating unnecessary traces from the large dark areas of the image_map/HF.)
> I'm working up an overall tiling scheme, and will be back with it ASAP.
> 
> Meanwhile, here's the linear-tracing code. I'm not totally sure what values
> counter_x and counter_z should start with--1 or 0. Either one *works* but it
> should be a logically correct value. Sorry, my brain is tired...
> 
It looks like a griddler

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