Hi Ron, adapting DE to work for heightfields may be a better option - I did some trials and got these on a Julia using a version of delta DE:
Solid on atan(smooth iter) @640*480 in 11.78 secs, maxiter 60, bailout 1024:
<Quoted Image Removed>
If no image above then look here:
http://makinmagic.deviantart.com/art/Julia-Iter-Heightfield-128717839Solid on DE @640*480 in 11.28 secs, max iter 60, bailout 1024:
<Quoted Image Removed>
If no image above then go here:
http://makinmagic.deviantart.com/art/Julia-DE-Heightfield-128718029I'm pretty sure an analytical DE could be developed for both solid on smooth iteration height and solid on DE height that would be more optimum than using delta DE.
Heightfields done using DE are definitely possible on other colourings too, but perhaps a little more difficult to impliment both fast and accurately.
Like David, I have had good luck adapting DE values to create height maps. I then render them as triangle meshes using OpenGL.
I've created a lot of images this way. some examples:
A fairly conventional view of the whole Mandelbrot set in 3D:
An image colored using integer iteration values:
A 3D version of a plot from "The Beauty of Fractals": (map 49 from that book)
Another Mandelbrot set from a different perspective (with some clouds added after the fact)
And a Julia set rendered with much more dramatic height values, from a very close camera angle that makes it look like a flower:
Regards,
Duncan C
December 05, 2010, 01:07:05 AM
Creating 3D-meshes from flame fractals
JWildfire
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