Thomas Lake wrote:

> Thanks for letting me know! Unfortunately Isosurfaces are beyond me:-( I really
> need to learn more Math, though I am in grade 12.

Don't let the x, y and z in isosurfaces scare you ! It's quite possible to do nice
stuff with them without really knowing the math behind. (BTW, learning to use
isosurfaces can be a nice way to learn math...).
There's a lot of material ready to use, just look in p.text.scene-files and in the
links below :

Mike Williams' http://www.econym.demon.co.uk
Fabien Mosen's http://users.skynet.be/bs936509/iso/iso-tut.htm (in French, but lots
of examples)

(note : is there a current URL for SamuelT isosurface tutorial page ?)

G.



>
> Gilles Tran wrote:
>
> > 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.
>
> --
> Come visit my web site:-) : http://www.geocities.com/~thomaslake/

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