How does POV solve the problem with coincident surfaces in CSG? I
mean, not the ones newbies ask about, but the one like in here:

difference {
  box { -0.5,0.5 }
  box { -<1,0.25,0.25>, <1,0.25, 0.25> }
  box { -<0.25,1,0.25>, <0.25,1,0.25> }
  box { -<0.25,0.25,1>, <0.25,0.25,1> }
}

Take a look here:

http://www.xukc.net/staff/peter/fem/starofdavid.png

This is rendered with my small renderer. The source is here:

http://www.xukc.net/staff/peter/fem/source.tar.gz

(it now has optional SVGA display using SVGALib if you have that;
optionally, you can redirect output to a ppm file if you choose that).

The equivalent POV file is here:

http://www.xukc.net/staff/peter/fem/starofdavid.pov

You see it doesn't have this problem. How does POV solve it?


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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