Hi, I am a begineer for Pov-Ray. I am doing a school project which requires me
to use pov-ray to generate a picture which each pixel value actually represent
its normal value.
  My supervisor told me I can just replace the color value(R,G,B)of each pixel
by that pixel's normal value(x,y,z). but I really have no idea about how to do
it. Do I need to edit the source code? or anybody can tell me where I can find
the source code which calculate each pixel's color and its normal value? Please
help, it's very important to me.

  Thank you very much

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