On Sat, 9 Oct 1999 19:39:04 +0200, "Daniel Pirch" <dpi### [at] gmxnet>
wrote:

>hi group,
>I have the following problem:
>The reflection statement causes all light colors to be reflected on a
>surface. But shouldn't metallic surfaces only reflect one color? I can do
>this with a color vector like  reflection <.4,0,0> or reflection Red*.4  .
>But what if the pigment isn't a only single color but a texture pattern? Is
>there a way to use the pigment color as reflection color too?
>
>tia, Daniel

Aside from using wyzpov or the SuperPatch, you can try to fake it
using a texture map. The idea is to blend between the two textures
having the same pigment but different finished, and the texture_map
pattern must be the same as that of the pigment. For example:

#declare B = pigment { bozo color_map { {[0 Red][1 Blue]} } }

#declare MetallicBozo=
texture
{
  bozo
  texture_map
  {
    [0 pigment { B } finish { reflection Red }]
    [1 pigment { B } finish { reflection Blue}]
  }
}

You might need to declare the textures used in the texture map body
before you use them, but that's a cosmetic fix.


Peter Popov
ICQ: 15002700

Post a reply to this message