Body Colour

        body red green blue
The body colour affects the colour of rays that pass through; this can be used to colour (semi)transparent objects.

Figure 4-5

        /*
           example of body;
             2 glass cubes (one with "body")
           Stephen Peter 21 may 94
        */
        eyep  8 -5 4
        lookp 3  2 .3
        screen 450 300
        light 1 point  4 -8 5
        light 1 point -4 -8 5


        surface glass1
            ambient  .02 .02 .02
            diffuse  .02 .02 .02
            specular .80 .80 .80
            specpow  32
            transp   .75
            index    1.15

        surface glass2
            ambient  .02 .02 .02
            diffuse  .02 .02 .02
            specular .80 .80 .80
            specpow  32
            transp   .75
            index    1.15
            body     .4  .3  1

        surface cream
            ambient  .2 .2 .2
            diffuse  .7 .7 .7
            specular .3 .3 .3

        surface green
            ambient  .2 .2 .2
            diffuse   0 .7  0
            specular .2 .4 .2

        /* base */
        plane green 0 0 0   0 0 1
          texture checker cream

        box glass1  0 0 0  2 2 2
        box glass2  4 0 0  6 2 2

Extinction Coefficient

        extinct coefficient
Controls the intensity of rays passing through transparent objects.


Translucency

        translucency translu red green blue stexp
Translucency is used to light a surface if the side facing away from the eye point is receiving light.


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Objects.

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THE END - Notes on Rayshade - 4 - Defining Surfaces