On 8/3/2016 7:51 AM, Thomas de Groot wrote:
> I am a bit puzzled by the stripes and not sure what might generate them.

There are two types. One caused by the sectioning of the model. The 
others look like gaps.

> I suppose you have tried subdividing the model further before generating
> the df3? It has been a while since I did this exercise...
>
No I've not. The obj file itself is 12k in size and has 78000 vertexes 
and 144500 faces.
I am rendering the TGAs at 512 by 512 with 512 slices. I will try 
reducing the number if slices to see if that makes any difference.
It is irritating that PovRay takes about 14 seconds to do a save.

> On the other hand, the book is clear indeed about this so it is acceptable.

For 1975 when the book was published. I would like to do better if I can.
I have a couple of other dragons I can try but they are all thin.

-- 

Regards
     Stephen

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