Dave Blandston schrieb:
> Alain <aze### [at] qwertyorg> wrote:
>> Where is the source scene file?
>>
>>
>> Alain
> 
> I'll post the source in POV-Ray Text Files - scene-files.

After having boiled down the scene to about 60 lines, I found that the 
only fault of POV-Ray 3.6.2 and 3.7 (but probably also of POV-Ray 3.6.1) 
is that they don't warn you about pathological cylinders (and similarly 
pathological tori) you're building in the BeveledCylinder macro; try the 
following change:


#macro BeveledCylinder (Top, Bottom, Radius, EdgeRadius)

    union {
       cylinder {<Top.x, Top.y, Top.z + EdgeRadius>, Bottom, Radius}
->    #if (Radius > EdgeRadius)
          cylinder {Top, Bottom, Radius - EdgeRadius}
          torus {
             Radius - EdgeRadius, EdgeRadius
             rotate 90 * x
             translate <Top.x, Top.y, Top.z + EdgeRadius>
             sturm
          } //torus
->    #else
->       sphere {<Top.x, Top.y, Top.z + EdgeRadius>, EdgeRadius}
->    #end
    } //union

#end //#macro BeveledCylinder


POV-Ray 3.6.2 and 3.7 do indeed behave strange in such a case 
(apparently creating an object which, when intersected with another one, 
gets *bigger*), but what do you expect when working with infinitely thin 
cylinders ;-)

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