Le 13/12/2013 11:55, Roman a écrit :
> Hi there,
> 
> The minimal scene file below should produce identical images for any
> value of the scaling factor s, but it doesn't. s=1e-1 works fine, s=1e-3
> produces individual spheres instead of a sweep, and s=1e-5 makes the
> object fully invisible. The code for sphere_sweep doesn't seem to scale.
> 
> Using other values for the sphere_sweep tolerance and turning off the
> bounding (-MB) doesn't solve the problem.
> 
> This might be related to http://bugs.povray.org/task/81, as I'm getting
> the artifacts described there as well for intermediate scaling factors,
> but the problems described here appear to be much more severe.
> 
> I'm using POV-Ray 3.7 on OpenSUSE 12.2.
> 

It is not related to 81, but 297

http://bugs.povray.org/task/297

(81 is about artefact (noise) in solver, whereas 297 is about epsilon)

A lot of shapes would not scale either. That's 297.

-- 
Just because nobody complains does not mean all parachutes are perfect.

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