Mark Hanford wrote:
> I'm sure this is something I've seen somewhere in the manual, but I cannot
> find it anywhere :(
> 
> I'm trying to create a kind of 3D relief map of the world, and have some
> pretty image maps and height maps etc, and I want to make the water parts of
> the map partially reflective.
> I also have a black-and-white image with the water parts white and the land
> parts black.
> 
> What I can't work out is how to make areas of the height_field{} have
> different finishes depending on the value of the B&W mask.

The only way to get different finishes in POV-Ray 3.5 is to use 
different textures.

You can use different textures accoding to a mask image with a 
material_map or an image_pattern with a texture_map.

Christoph

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