On 11/22/24 16:07, William F Pokorny wrote:
> Aside: In addition to the 'tiling' pattern (implementing 27 sub-tiling- 
> patterns), There is too 'pavement' with a great many possibilities (112 
> base arrangements IIRC - plus exterior, interior and form treatments 
> thereof). I think it a bit harder to understand and use than is tiling, 
> but it's cool too.

Attaching an image of a pavement based isosurface 'height field'.

#declare Fn00 = function {
     pattern {
         pavement
         ip_sides     3  // The ip_* values are the defaults
         ip_tiles     1
         ip_pattern   1
         ip_exterior  0
         ip_interior  0
         ip_form      0
         cubic_wave phase -1/2 poly_wave 15 frequency 1
     }
}
#declare Fn01 = function (x,y,z) { // isosurface function
     f_planar(y+(Fn00(x,y,z)*0.05),0.02,1)
}

There are yuqk particulars above, but the core pavement pattern is 
what's in POV-Ray.

Bill P.

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