Andrew Cocker wrote:
> 
> Hi there,
>     Can anyone explain why the following code gives the message 'Degenerate
> blob element' ? It renders okay, so it's no great problem, but I am curious
> as to what it means, and how I get rid of it.
> 
> Many thanks,
> Andy C.
> 
> #declare StrengthVal=0.01;
> #declare RadiusVal= 0.01;
> 
> blob
> {
>   #declare Count=0.0001;
>   #while (Count<=100)
> 
>   threshold 0.6
>   sphere {<0,0,0>,StrengthVal*Count,RadiusVal*Count
>         translate <2.5,2.5,2.5>
>         rotate <Count*3.6,Count*3.6,Count*3.6>
>         }
> 
>   #declare Count=Count+1;
>   #end
>  }

My guess is that it's 'cause the first component has a strength of .01*.0001 =
very small, and the threshold is bigger than that. Starting 'Count' at 1 (or
1.0001, if you prefer) should fix that without affecting the image.

-Mark R.

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