In article <3A5B59E7.CE989B48@gmx.de>, Christoph Hormann 
<chr### [at] gmxde> wrote:

> That looks great, what kind of formula generates those surfaces?

It simply recursively divides the triangles into 3 triangles with a new 
point at the center, and moves the center point in a direction along the 
normal of the triangle. The two vaguely sphere-like objects had a 
positive displacement, the one that looks like an engraved tetrahedron 
had a small negative displacement.
Another method, which I am going to try soon, would divide the triangles 
into 4 parts, one center and 3 corner triangles, but the method I used 
for these keeps the edges of the original shape intact.


> IMO they would look nice when made transparent, with refraction, photons,

I almost did that...but I was focusing more on the geometry than the 
surroundings and texturing.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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