Hershel Robinson wrote:
>
> How do I translate colors from HTML format, i.e. color="#D5EAFF" to POV
> format?

When assumed_gamma isn't used drop G() because it's not needed.
Hex2Color does straight html color to pov color conversion.

#declare AG=1;

#global_settings{assumed_gamma AG}

#macro G(Color)
  #local DisplayGamma=2.2; //Display_Gamma from povray.ini
  #local Gamma=DisplayGamma/AG;
  <pow(Color.x,Gamma),pow(Color.y,Gamma),pow(Color.z,Gamma)>
#end

#macro H2D(Hex)
  #local H=strupr(Hex)
  #local D1=asc(substr(H,1,1))-65;
  #local D2=asc(substr(H,2,1))-65;
  (D1<0 ? D1+17 : D1+10)*16 + (D2<0 ? D2+17 : D2+10)
#end

#macro Hex2Color(C)
  (<H2D(substr(C,1,2)),H2D(substr(C,3,2)),H2D(substr(C,5,2))>/255)
#end

camera{location -3*z look_at 0}

box{-1,1
 pigment{rgb G(Hex2Color("D5EAFF"))}
 finish{diffuse 0 ambient 1}
}


_____________
Kari Kivisalo

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