=?UTF-8?Q?J=C3=B6rg_=22Yadgar=22_Bleimann?= <yaz### [at] gmxde> wrote:
> Hi(gh)!
>
> As a background for an animated text imploring a dear friend to buy a
> new laptop, I want to have a white mesh2 screen with slowly growing
> black polka dots, which finally overlap until no white is visible
> anymore - but instead they just stop growing as they touch each other!
>
> Is there a way to keep them growing anyway? Or do I have to use a
> different pigment pattern?
>
> Here is the code:
>
> // begin code:
>
> /* #declare loop=div(clock,200);
> #switch(loop)
>    #case(0) */
>      #declare OuterColor=<1, 1, 1>;
>      #declare InnerColor=<0, 0, 0>;
>      #declare TranslateVector=<-0.005, -0.0035, 0>;
> /*  #break
> #end */
>
>
> mesh2
> {
>    vertex_vectors
>    {
>      4
>      <-1, 0.5, 1>, <3, 0.5, 1>, <-1, -0.5, -1>, <3, -0.5, 1>
>    }
>    face_indices
>    {
>      2
>      <0, 1, 2>, <1, 2, 3>
>    }
>    texture
>    {
>      pigment
>      {
>        cylindrical
>        rotate <90, 0, 0>
>        translate <1, 1, 0>
>        warp { repeat x*2 }
>        warp { repeat y*2 }
>        color_map
>        {
>          [0 color rgb OuterColor]
>          [1-clock/105 color rgb OuterColor]
>          [1-clock/105 color rgb InnerColor]
>          [1 color rgb InnerColor]
>        }
>      }
>      finish { ambient 1 diffuse 0 }
>      scale 0.05
>      translate clock*TranslateVector
>    }
> }
>
> camera
> {
>    orthographic
>    location <1, 0.15, -5>
>    look_at <1, 0.15, 0>
>    right <1000, 0, 0>
>    up <0, 100, 0>
>    angle 40
> }
>
> See you in Khyberspace!
>
> Yadgar
>
> Now playing: Apo 22 (Vangelis)
> --
> VBI BENE, IBI BACTRIA!

When I first started to answer this. I thought 'scale the the pigment with the
clock'. Then I open the reply page and really looked at your code. I needed to
play with it to see what it's doing. And after many minutes this is what I came
up with

#declare A=1-clock;
plane{z,0 pigment{spherical color_map{[A,rgb 1] [A,rgb 0]}
        scale 1+clock*10
        translate <1, 1, 0>
        warp { repeat x*2 }
        warp { repeat y*2 }
     } finish{ambient 1}scale .05}

I guess you could just insert the 'scale 1+clock*10' into you code. But where
the fun in that?!:)

Have Fun!

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