> hi scott,
>
> thank you for the swift (~45mins!! wow) reply.
>
> On 10/03/2014 16:13, scott wrote:
>> .. *something* visible ..
>
> I see what you mean :-)
>
>>> camera {
>>>     location <0,2,-5>
>>       look_at <0,-4,0>
>>> }
>> ...
>>>     contained_by { box { -10, 10 } }
>
> well it gives me something to start from.  I now suspect that the object
> isn't located at origin and/or that the camera may be somewhere inside
> it (because the "*something*" looks like a small section of the object).
>
> I'll play with it tonight.  thanks again.
>

Looking at your function, I suspect that the object is certainly 
contained in a box much larger than the original containing box. My bet 
would be: box {<-9, -2, -9>, <9, 2, 9>}
Make it larger if the object is clipped.
Add an identical box with pigment{rgbt<1, 0.1, 0.1, 1>} to your scene if 
it looks like there are missing parts.
You can also add inside_texture{pigment{rgb<1,0,0>}finish{ambient 1}}. 
That way, any hole should appear in bright red.

Next, the camera needs to be located outside that box.
It can be achieved by placing the camera accordingly, or translating the 
object itself.



Alain

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