POV-Ray: Newsgroups: povray.newusers: heightfield is rendered as black rectangle: heightfield is rendered as black rectangle

POV-Ray : Newsgroups : povray.newusers : heightfield is rendered as black rectangle : heightfield is rendered as black rectangle		Server Time 5 Nov 2024 13:25:59 EST (-0500)

From: Chuck Roberts
Date: 9 Aug 1999 09:52:09
Message: <37AEDD3D.C72C5D9B@accn.org>

I have POV 3.1g for Win 95 and am trying to render a heightfield which
is a 16 color GIF. My code for it is:
height_field {gif "d:\progra~1\POV-ray\a-images\aztec1.gif"
  scale <4,4,4> 
  translate <-2,2,0>

  }

But it just renders as a black rectangle. The first half of the colors
in the GIF are shades of "black" (i.e. real close to black). Do I need
to vary my colors in the color palette? Some of my colors are non-black,
but how come I don't see any sign of those? I also have 2 light sources
to make sure I see the surface of the object. 

BTW, my picture is a picture of several aztec glyphs. And I used Paint
Shop Pro 3.11 (for win 3.1) to save the GIF to 16 colors.

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