Well, this is what I did.
#macro PlanetMac(Pic1,Pic2,Rad,Prec)
union	{
	#local Pig1 =pigment{image_map {png Pic1 interpolate 2 map_type 1}}
	#local Pig2 =pigment{image_map {png Pic2 interpolate 2 map_type 1}}
	#local Pic= function{pigment{Pig1}}
	#local R0=Rad;
	#local FUNC1=function {"sphere",<R0>}
	// more highlighting (water)
	#declare Tex1=texture {
				pigment {Pig2}
				finish	{
					blinn 1 facets .2 reflect_metallic conserve_energy diffuse .3 
					roughness .04 reflection .15
					}
				}
	 // less highlighting (land)
	#declare Tex2=texture {pigment {Pig2}finish {blinn 0 specular 0 phong
0}}
	isosurface
		{
		function{FUNC1(x,y,z)-(Pic(x,y,z)*R0*Prec)}
		contained_by {sphere {0,R0*(1+Prec)}}
		method 2 max_gradient 10
		material{
			texture {
				image_pattern { png Pic2 map_type 1} // use_alpha
				texture_map { [.33 Tex1][.33 Tex2]}
				}
			interior{ior 20}
			}
		}
	sphere	{0,0 hollow pigment{ Blue transmit .8}}	// to be used as water
later
	}
#end


Bob Hughes wrote:
> 
>   Real neat, there's some leftover water parts not getting the same highlight
> but it makes it look like different water surfaces.
>   I was trying more on this concept too and found it very difficult to get the
> right index set up.  I was even trying to go by what was in a paletted Gif but
> the palette was in chaos.  Needs to be a very orderly palette, and then I'm not
> sure how that would be for applying over a non-Gif image_map.  I also tried to
> get the whole thing to go onto one sphere without any luck.  I'd have told you
> about it if I were able to do so.
> 
> Bob
> 
> "mr.art" <mr.### [at] gcinet> wrote in message news:38965E6F.60BBC079@gci.net...
> | This is a large pic. I tried to get the land to have
> | a different finish than the water. Seems to have worked.
> | --
> | Mr. Art
> |
> | "Often the appearance of reality is more important
> | than the reality of the appearance."
> | Bill DeWitt 2000
> 
> --------------------------------------------------------------------------------

-- 
Mr. Art

"Often the appearance of reality is more important 
than the reality of the appearance."
Bill DeWitt 2000

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