Here it is.  Any improvements?

#declare slidetext1=
        texture{ pigment{image_map {png "mimeslide020593.png" map_type 0
once }}finish{ambient .4 diffuse 0}}
        texture{pigment{rgbf <1,1,1,1>}}

#declare slidetext2=
        texture{ pigment{image_map {png "mimeslide020593.png" map_type 0
once }}finish{ambient <1,3,1> diffuse 0}}
        texture{pigment{rgbf <1,1,1,1>}}

    box{<0,0,-0.0001>,<1,1,-0.0002>
        texture{
                gradient y
                texture_map{
                        [0.25 slidetext1]// finish{ambient rgb<1,1.5,1>}]//
pigment{rgbf <1,1.0,1,0.95> } ]
                        [0.25 slidetext2]// finish{ambient rgb
100}]//<1,0.5,1>}]// pigment{rgbf <1,1.0,1,0.95> } ]
                        //[0.25 pigment{rgbf <1,26.0,0,0.95>}]
                        }
                        frequency 50                        }
        scale 400
        translate 600*z}

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I'm trying to come up with a way to make a pre-existing image show up on a
TV screen in my image with some sort of distortion.  All the ideas I can
come up with make it look like the people are hiding behind a fence instead
of duplicating a gross rastered effect.

Any tips from those who have mastered this effect?

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On Wed, 26 Nov 2003 18:01:27 -0500, "Greg M. Johnson"
<gregj;-)565### [at] aolcom> wrote:

>Here it is.  Any improvements?
>

	I could not get this to work.  Hoever, if by
TV, you mean that scanline effect, try this:

---- cut here ---- save as a pov file ----
/* best render this with no anti-aliasing at all! */
/* it is assumed that the input image aspect ratio
   and the output image aspect ratio are identical */

#version 3.5;


global_settings {
  assumed_gamma 2.2 // set same as your display_gamma setting
  noise_generator 1
}


camera {
  orthographic
  location 0
  direction <0, 0, 1>
  right <1, 0, 0>
  up <0, 1, 0>
  translate <0, 0, -10>
}


#declare pic_pig = pigment {
  image_map {
    sys "screen.bmp" // your image here
    interpolate 2 // or not
  }
  translate <-0.5, -0.5, 0>
}


#declare scanline = pigment {
  average
  pigment_map {
    [ 1 pic_pig ]
    [ 1 color rgb 0 ]
  }
}


plane {
  <0, 0, -1>, 0
  pigment {
    gradient <0, 1, 0>
    frequency (image_height / 2) // the trick
    pigment_map {
      [ 0.5 scanline ]
      [ 0.5 pic_pig ]
    }
  }
  finish { ambient 1 diffuse 0 }
}


/* actual end of this file */
---- cut ----

	For a neat trick, render this at different
sizes and see what happens (or rather, what does not
happen) to the size of the scanlines

Peter

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AVERAGE!!
Of course, thank you.

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