On 11/22/2016 3:31 AM, clipka wrote:
>> Here is the whole file again with your changes. The shape I get when I
>> render is that of a pointy cap. I don't know if that's correct or not.
>
> How would I know -- I'm not familiar with that colour model.
>
> Now you need to intersect that shape with the five others -- or use the
> combined function:
>
>     min(
>       convertLCH2RGB_R(y*200-100,sqrt(x*x+z*z)*100,atan2(x,z)*pi/180),
>       convertLCH2RGB_G(y*200-100,sqrt(x*x+z*z)*100,atan2(x,z)*pi/180),
>       convertLCH2RGB_B(y*200-100,sqrt(x*x+z*z)*100,atan2(x,z)*pi/180),
>       1-convertLCH2RGB_R(y*200-100,sqrt(x*x+z*z)*100,atan2(x,z)*pi/180),
>       1-convertLCH2RGB_G(y*200-100,sqrt(x*x+z*z)*100,atan2(x,z)*pi/180),
>       1-convertLCH2RGB_B(y*200-100,sqrt(x*x+z*z)*100,atan2(x,z)*pi/180)
>     )
>
> should do the job, I think.
>

Using "min" all I got was a cube. Switching to "max" instead, I got a 
shape... of some sort. I'm not sure it's the correct one. Check the 
thread in p.b.i and tell me if the images show the same object.

http://news.povray.org/583548b6%40news.povray.org

Mike

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