Hi Mike,

Don't worry, it isn't a delay.

Thanks for your help. All understood now. I didn't know the leopard function 
and I now I know it.

Regards,
Oleguer


news:J9lazIApnj$BFwVN@econym.demon.co.uk...
> Wasn't it Oleguer Vilella who wrote:
>>Hi Mike,
>>
>>Thanks for your help Mike, but that's not what I was looking for. I'm
>>traying to unify all the spheres to obtain an uniform membrane.
>
> Sorry for the late response. I've been unable to establish a link to the
> pov newsserver for a few days.
>
> Well, once you've got all the blob components in a single blob object
> you can adjust the threshold value, and the strength and radius of the
> individual blobs, and the separation between the blobs (like #local
> Fons=Fons+0.5), so that they blob together into a bumpy membrane. You
> can't do that with your original version because each sphere is a
> separate blob object.
>
> Alternatively, you could discard the blobs altogether and use the same
> cos and sin waves to drive an isosurface function, which will give you a
> perfectly smooth membrane that has exactly the same shape.
>
> #declare  F = function {y - 9*cos(x/3/8) - 3*sin(z/3/8)}
>
> #declare Thickness=1.5;
>
> isosurface {
>  function { abs(F(x,y,z)) - Thickness }
>  max_gradient 2
>  contained_by{box{<-36,-20,0><300,20,150>}}
>  pigment {rgb x}
>  finish { ambient 0.2 diffuse 0.8 phong 1 }
>  translate <10,-20,30>
> }
>
>
> If you want, you can put fake blobs back into the isosurface as follows.
> The "x+z" and "z-x" bits rotate the fake blobs by 45 degrees, otherwise
> the leopard pattern has a diagonal pattern.
>
> camera {location  <150,150,-150> look_at <150,50,0> }
> background {rgb 1}
> light_source {<-30, 100, -30> color rgb 1}
>
> #declare  F = function {y - 9*cos(x/3/8) - 3*sin(z/3/8)}
>
> #declare Thickness=1.5;
>
> #include "functions.inc"
>
> isosurface {
>  function { abs(F(x,y,z)) - Thickness - f_leopard(x+z,0,z-x) }
>  max_gradient 2
>  contained_by{box{<-36,-20,0><300,20,150>}}
>  pigment {rgb x}
>  finish { ambient 0.2 diffuse 0.8 phong 1 }
>  translate <10,-20,30>
> }
>
>
>
> -- 
> Mike Williams
> Gentleman of Leisure

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