If any of the kids are into photography, they will relate to the use of
filters over their lens. Try putting a normal statement on the camera to
distort everything in the scene. Try it first with the normal statement
commented out (//) then with the normal enabled. The possibilities are
endless:

// Persistence Of Vision raytracer version 3.1 sample file.

global_settings { assumed_gamma 2.2 }

#include "colors.inc"           // Standard colors library
#include "shapes.inc"           // Commonly used object shapes
#include "textures.inc"         // LOTS of neat textures.  Lots of NEW
textures.

camera {
   location  <0, 3.5, -3.7>
   direction <0, 0,    1>
   up        <0, 1,    0>
   right   <4/3, 0,    0>
   look_at   <0, -0.25,    0>
   normal {wrinkles .2}
}

// Light source

light_source {<-30, 11, +20>  color White  }
light_source {< 31, 12, -20>  color White  }
light_source {< 32, 11, -20>  color LightGray }

#include "rdgranit.map"
#declare Pink_Gran_Texture =
texture {
   pigment {
      granite
      color_map { M_RedGranite }
      scale 0.4
      }
   finish {
      specular 0.75
      roughness 0.0085
      ambient 0.15
      reflection 0.2
   }
}

union {
   sphere {<0, 0, 0>, 1.75}
   difference {
      object {UnitBox scale 1.5}
      // Clip some sqr holes in the box to make a 3D box frame
      object {UnitBox scale <1.51, 1.25, 1.25> }   // "clip" x
      object {UnitBox scale <1.25, 1.51, 1.25> }   // "clip" y
      object {UnitBox scale <1.25, 1.25, 1.51> }   // "clip" z
   }
   texture { Pink_Gran_Texture scale 0.25 }
   rotate y*45
}



"wrestler" <mew### [at] starbandnet> wrote in message
news:3c5b34de@news.povray.org...
> Yep, so far it's just boxes, cones, and such.  We are going to try the csg
> stuff on Monday if everything goes well.  I told them their next project
was
> to build a car so they will need the csg stuff.
> Colin
>
>
> "Bill DeWitt" <bde### [at] cflrrcom> wrote in message
> news:3c5b30dd@news.povray.org...
> >
> > "wrestler" <mew### [at] starbandnet> wrote :
> > >
> > > Right now we are just using the regular shapes with some of
> > > the textures (some we can't figure out how to use) to make very basic
> > > pictures.  I would like to go further but am not sure which direction
to
> > go.
> >
> >
> >     By basic shapes, do you mean that you are just adding boxes and
> spheres
> > etc to make a shape? If so the next step is cog, cutting shapes out of
> other
> > shapes. Look into "intersection" and "difference".
> >
> >     If you have already covered those, you may want to move to
conditional
> > statements, creating arrays of objects based upon changes in variables.
> Look
> > for "if" and "while".
> >
> >     You may find that the first tutorial in the Povray help file will
help
> > you cover most of the basic subjects, have you looked into that?
> >
> >
>
>

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