"Simon Adameit" <gom### [at] gmxde> wrote in news:3d9af521@news.povray.org

> There are some cases where you cant use #declare for example in a blob
> but you are right that in the examples he gave #declare would have
> been better. 

example that I give here is in fact quite poor, I thought about this 
macro's when creating i.e. textures. 

compare :
pigment { marble cmapGray } // imho bets - now impossible
pigment { marble cmapGray() } // almost best
pigment { marble color_map {cmapGray } }// typical
pigment { marble color_map{[0 color rgb 0][color rgb 1]}// worst

or even better - example with creating long color_maps example - above

another example - 1 block with 2 definitions, like
finish { finWater finGlow }

where finWater is reflection,specular,etc
and finGlow is ambient / diffuse settings


-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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