Marc-Hendrik Bremer wrote:
>"normdoering" <nor### [at] yahoocom> schrieb im Newsbeitrag
>news:web.3dcb3c88902ebc51ccdab82b0[at]news.povray.org...
>> //==============================
>>
>> #declare MyFunction = function{pattern {bumps scale 0.2}}
>>  // MyFunction above works...
>>
>
>As a pattern, this function returns a float value.
>
>> #declare MyTest = function
>>  { pigment
>>    { image_map
>>      {png "testHF.png"
>>       map_type 0 interpolate 2
>>      }
>>     }
>>   } // <- this replacement produces an error.
>>     // shapes.inc pops up and marks the bit of code named above
>>
>
>As a pigment, this function returns a vector. Pov can handle
>vector-functions only in special cases, therefor you have to convert the
>output to a float value.
>
>Try:
>
>#declare MyTest=function{MyTest(x,y,z).hf}
>
>(it's difficult to find but the dot-operators are explained in the docs
>somewhere)
>
>Hth,
>
>Marc-Hendrik
>

Thanks! I never would have figured that one out without help. Don't know
enough about the internal workings of pov yet.

normdoering

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