Wasn't it Richard who wrote:
>I want to map a pattern, either a checkerboard texture, or an input image,
>onto a cylinder.  What I want to do is take a square image and repeatedly
>"paint" or "tile" it on the cylinder.
>
>I've tried this:
>
>cylinder { <0, -1, 0>, <0 1 0>, 1
>  texture {
>    pigment {
>      image_map { gif "myimage.gif" map_type 2 interpolate 2 }
>    }
>  }
>}
>
>but how do I make the aspect ratio so that a 1x1 patch on the surface of
>the cylinder gets the image I input?

In the case of a cylinder, you can use uv_mapping

cylinder { <0, -1, 0>, <0 1 0>, 1
  uv_mapping
  texture {
    pigment {
      image_map { 
        gif "myimage.gif"
        interpolate 2 
      }
    }
  }
}


>
>Also, can I make default textures, like "checker" paint in the same way?

And uv_mapping also works for any texture

cylinder { <0, -1, 0>, <0 1 0>, 1
  uv_mapping
  pigment {
    checker scale 0.5
  }
}

-- 
Mike Williams
Gentleman of Leisure

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