"Xayvion" <nomail@nomail> wrote in message 
news:web.4332975e3364fc7fe1ee334e0@news.povray.org...
> Hi all
>
> I have a problem with pov-ray.  I'm trying to make a keyboard button with 
> a
> letter in the upper left corner, but I can't find a way how to position 
> the
> texture on the correct place on the button.  The image file "D.png" is
> simply a transparent png with the letter "D" in it. I'm using Pov-ray
> 3.6.1a for Windows.
>
> This is the script i'm using.  Can someone please help me?
>
> Thanks
>
> Xayvion
>
> #include "colors.inc"    // The include files contain
> #include "stones.inc"    // pre-defined scene elements
>
> #declare btnColor = pigment {color Yellow}
> #declare mapD = pigment { image_map {png "D.png" once} }
> #declare tex = texture {btnColor} texture {mapD}
>
> background { color Cyan }
>  camera {
>    location <0, 3, -4>
>    look_at  <0, 0,  0>
>    up <0,1,0>
>  }
>
>
> prism {
>    //linear_sweep
>    conic_sweep
>    cubic_spline
>    0.75, // sweep the following shape from here ...
>    1, // ... up through here
>    7, // the number of points making up the shape ...
>    <1,-1>,<-1,-1>,<-1,1>,<1,1>,<1,-1>,<-1,-1>,<-1,1>
>    texture { tex }
>    rotate <180, 0, 0>
>    translate <0, 1, 0>
>    scale <1,3,1>
>
>  }
>
>  light_source { <0, 10, 0> color White}
>
>
>

Hi Xayvion,

You can transpose the pigment in the same way you transpose objects, so if 
you change your pigment declaration to:

#declare mapD = pigment { image_map {png "D.png" once} scale 0.5 translate 
<-0.8,0,0.8> rotate -x*90  }

it gets scaled, translated and rotated and should end up more or less 
wherever you want.

Have fun,

Chris B.

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