I need to create some black and white illustrations for which I use Glow[White]. Unfortunately this makes soft edges disappear, so objects blend into the background. Is there a way to have Mathematica draw a black edge left and right of the yellow cylinder below?

Graphics3D[{Glow[Yellow], Black, EdgeForm[Thick], Cylinder[]}, Boxed -> False]

yellow barrel


1 Answer 1

h[et_] := Graphics3D[{Glow[Yellow], EdgeForm[et], Yellow, Cylinder[]},  Boxed -> False]
ImageMultiply[ h[Black], ColorNegate@EdgeDetect@h[None]]  

Mathematica graphics

  • $\begingroup$ +1 But does it function for other Graphics3D- primitives ? $\endgroup$
    – eldo
    Oct 3, 2014 at 21:24
  • $\begingroup$ @eldo It's a quick and dirty solution, as I don't know how "general" the OP wants it. Let's see if s/he explains further. $\endgroup$ Oct 3, 2014 at 21:42

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