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MathGroup Archive 1998

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Mathematica Lightning Model?

  • To: mathgroup at
  • Subject: [mg14724] Mathematica Lightning Model?
  • From: Alexander Otte <al at>
  • Date: Wed, 11 Nov 1998 17:53:31 -0500
  • Organization: Comp.Center (RUS), U of Stuttgart, FRG
  • Sender: owner-wri-mathgroup at


How can it be, that the shading of an object depends on the distance
between object and viewer?

The following line of code shows the problem:

Plot3D[Sin[x] Cos[y],{x,0,2 Pi},{y,0,2 Pi},


The surface is rendered with a single color. Even if an object is far
away - should't the intensity of diffuse reflected light depend on the
angle between the surface normals and the direction of light?

So what kind of lightning model (lightning equation) does Mathematica



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