On 13/02/2015 11:00, clipka wrote:
> Am 13.02.2015 um 00:09 schrieb Mike Horvath:
>
>>> Instead of using a standard "finish" define your own with a reflection
>>> rgb close to one for copper.
>>>
>>>
>>>    reflection {
>>>      rgb <0.722,0.451,0.200>
>>>      fresnel   0
>>>      falloff   0.000
>>>      exponent  1.000
>>>      metallic  0.500
>>>    }
>>>
>>
>>
>> I just tried that but didn't notice much of a difference. Maybe because
>> I am using parallel lights and camera?
>
> You need something to reflect.
>

Even a simple sky sphere will do.
Here is the one I use to start with.


#declare Shadow_Clouds_Top =
pigment {
   color rgbft <0.196,0.600,0.800,0.000,0.000>
}

#declare Shadow_Clouds_Mid =
pigment {
   bozo
   color_map {
     [0.000 rgbft <0.850,0.850,0.850,0.000,0.000>]
     [0.100 rgbft <0.750,0.750,0.750,0.000,0.000>]
     [0.500 rgbft <1.000,1.000,1.000,0.000,1.000>]
   }

   rotate    <0.0,0.0,90.000>
   rotate    <180.000,0.0,0.0>
   scale     <1.000,6.000,6.000>
   rotate    <-180.000,0.000,-90.000>
   turbulence <0.650,0.650,0.650>
   octaves 6
   lambda 2.000
   omega 0.700
}

#declare Shadow_Clouds_Bot =
pigment {
   bozo
   color_map {
     [0.000 rgbft <0.850,0.850,0.850,0.000,0.000>]
     [0.100 rgbft <0.750,0.750,0.750,0.000,0.000>]
     [0.500 rgbft <1.000,1.000,1.000,0.000,1.000>]
   }

   rotate    <0.0,0.0,90.000>
   rotate    <180.000,0.0,0.0>
   scale     <1.000,6.000,6.000>
   rotate    <-180.000,0.000,-90.000>
   translate <0.000,-0.150,0.000>
   turbulence <0.650,0.650,0.650>
   octaves 6
   lambda 2.000
   omega 0.700
}


#declare SkySphere1 =
sky_sphere {
pigment{ Shadow_Clouds_Top }
pigment{ Shadow_Clouds_Mid }
pigment{ Shadow_Clouds_Bot }

}


-- 

Regards
     Stephen

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