Le 03/06/2018 à 05:24, Hedrondude a écrit :
> I'm using POV-Ray to render cross sections of four and five dimensional uniform
> polytopes - especially star polytopes.  These renders can be seen on my website
> http://www.polyope.htm/hedrondude/polychora.htm  I use the polygon keyword quite
> a bit, but it only renders with the binary filling (all odd density regions gets
> filled in, even density are left as holes) which forces me to manually fill in
> all the non-0 even density regions.  This isn't too bad for simple polytopes,
> but with more complex ones, this gets very tedious.  Is it possible to render
> polygons with density filling (all non-0 density regions gets filled in - i.e.
> filled in by the 'winding method') or better yet could this be a feature for
> POV-Ray 3.8 where there is a density filling option for the polygon keyword.  I
> would suggest something like this:
> 
> #local obj=polygon {45,v1,v2,v3,......,v44,v1 density}
> 
> 

I did an experimentation on
https://github.com/LeForgeron/povray/tree/extension/winding-polyline

#declare A=<0,3,0>;
#declare B=<6,3,0>;
#declare C=<4.5,1,0>;
#declare D=<7,2,0>;
#declare E=<4.5,6,0>;
#declare F=<7,4,0>;
#declare G=<2,4,0>;
#declare H=<4,6,0>;
#declare I=<4,0,0>;
#declare J=<5,0,0>;
#declare K=<5,8,0>;
polyline
{
  A, B, C, D,
  E, F, G, H,
  I, J, K, A
  range { <1,2> }
  texture { pigment { color srgb 0.5 }}
}

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