Alain <aze### [at] qwertygov> wrote:
> Danny nous apporta ses lumieres ainsi en ce 2004/05/17 05:23... :
>
> >Alain <aze### [at] qwertygov> wrote:
> >
> >
> >
> >I used exactly what you told me, and I got a cylinder with white edges that
> >fades to nothing in the middle (without any red at all), and even those
> >white edges disappear as the cylinder continues on.  I'm using POV-Ray 3.5,
> >and here is the code I used:
> >
> >cylinder{<100,0,0>,<0,0,0>, .20
> >         texture {
> >    pigment { color rgbt 1}
> >    finish{reflection 0}}
> >       interior{media{emission rgb 1
> >       density{ cylindrical
> >       color_map{[0 rgb 0][0.5 rgb<1,0,0>][0.98 rgb 1][1 rgb 2]}
> >       }}}
> >       hollow
> >       translate<0,0,2>
> >       }
> >
> >Can you tell me what I'm doing wrong, and how to fix it?
> >
> >
> >
> Set the radius of the cylinder to 1, then rescale it by scale<.2,1,.2>
> just before you rotate it.
> You don't need to set finish{reflection 0}}, it's the default value.
> Set your cylinder verticaly, as it's the orientation of the cylindrical
> pattern, then rotate the whole thing.
> ...
> scale<0.2, 1, 0.2>
> rotate -90*z
> translate<0, 0, 2>
> }
>
> Alain

OK, now it looks good when I don't scale it, but scaling it seems to mess it
up.
When I scale it up it still seems to look OK, except the inner white part
has become enlarged disproportionately.  But when I scale it down, I lose
the white part completely, and all I have is a very dimly red cylinder.
Can you explain why it's doing this and how I can make it scale down right?

Post a reply to this message