On 07/05/2015 19:04, Anton Sherwood wrote:
> On 2015-5-07 10:16, Anton Sherwood wrote:
>> I'll try this:
>>
>>     object {
>>         ...
>>         rotate -N*y
>>         pigment { Tufte }
>>         rotate N*y
>>         }
>
> No luck.
>
Try changing the direction vector

pigment {
   slope {
     < 0.500, 0.000, 0.500 >  // <- Direction
   }
   color_map {
     [0.000 rgbft <1.000,0.000,0.000,0.000,0.000>]
     [0.534 rgbft <0.000,1.000,0.000,0.000,0.000>]
     [1.000 rgbft <0.000,0.000,1.000,0.000,0.000>]
   }

}


-- 

Regards
     Stephen

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