Thomas Lake wrote:

> What I did was I downloaded a Maze making program off the internet,
> these just make 2D mazes. Then I saved the images and went into
> Photoshop to play with the image, adding Gausian Blurring until I got a
> good heightfield image. Then I saved it as a TGA file and went into
> HF-Lab, there I previewed the image and saved it. Then I used Orb-Cyl to
> take the TGA heighfield to map it around a sphere. I used RAW output.
> Then I opened the RAW file in Rhino 3D and exported Moray/Povray UDO/INC
> files.

Another way to do this is isosurfaces (with Megapov) :

#declare r0=0.2;
#declare hfs=function{pigment{image_map{png "mazepic" map_type 1 interpolate
2} }}
#declare Maze=isosurface{function{x*x+y*y+z*z + r0*(1 - hfs(x,y,z))}
threshold 1 eval max_gradient 60 contained_by{sphere{0,1}} texture{txtMaze}}

(the max_gradient may have to be changed)
(http://www.mediaport.net/Artichaud/Tran/english/gtp1214e.htm)

Also, there's a great maze pigment function by SamuelT (look for "Re:Tuesday
evening enigma", Feb 10, 2000) that can be used to generate the map.

Possibly, it could be done in one pass (without the blurring of the maze
texture), but I haven't tried it.

G.

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