Good addition!

Thanks.

How does your macro compare to the isosurfacing capability already in
POVRay?  How is it the same?  How is it different?

Jim

"Mael" <mae### [at] hotmailcom> wrote in message
news:3bb33e2f$1@news.povray.org...
> hi,
>
> i found some c code for the marching cube algorithm
> (http://astronomy.swin.edu.au/pbourke/modelling/polygonise/) and translate
> it into a pov3.5 macro. This algorithm creates a mesh given a scalar
> function of (x,y,z) and an iso-level (so it tesselates an isosurface..)
>
> don t know if this can be useful (in fact i m sure it s useless, but it
was
> fun to programm :)
>
> the macro and an example can be found here :
> http://195.221.122.126/tmp/marching.html
>
> usage :
> #include "marching cube.inc"
> marching("my_function",thresold,box_min,box_max,steps,file_out)
>
> my_function : a string, the function of the isosurface (you must put it
into
> "")
> thresold : a float, the iso level you want
> box_min,box_max : two vectors = bounding box
> steps : a vector with the number of steps in each direction x,y,z
> file_out : a string, the output file , at the end it will contain the mesh
>
> ex :
> marching("dodca",1.5,<-10,-10,-10>,<10,10,10>,<50,50,50>,"poly.inc")
>
> the algo computes the function for all points of a steps.x*steps.y*steps.z
> grid , so don t use too large values for the number of steps !
> i ve not done too much tests, so it might be buggy..
>
> M
>
>

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