SomeOne wrote:

> I thought I'd try something different as an exercise. I want to create a
> chechered sphere.
> Trying to make a sphere with a checkered pigment won't give nice results. So I
> thought I'd try my hand a "image_map"ing. I created an image_map (see attached
> checker.png) and created a sphere with an image_map like this:
> 
> sphere{
>  0,1
>  pigment {
>       image_map {png "checker.png"}
>       scale 0.2
>   }
> }
> 
> What I don't get is how to make the image map wrap the entire sphere nicely.
> I'd be interested to hear how you pro's do this.
> 
> 

This will get the checkered sphere you were looking for:

sphere{
  0,1
  pigment {

       checker rgb 0 rgb 1
       scale 0.1
       warp { spherical }
  }

Change the pigment pattern to the following to use an image map. Note 
this will stretch the entire image to the sphere. To get smaller checks, 
use smaller checks in the image map:

  image_map {png "checker.png" map_type 1}
       scale 0.2

-- 
~Mike

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