Can anyone point me to what is wrong?

I've circled the artifact in question in the attached image.

I'm using Moray 3.3 and POV-Ray 3.1 (it looks the same with POV-Ray 3.5),
(THIS IS NOT A MORAY QUESTION)

The object is a rotational sweep.

The texture is as follows:

#declare Dragon_Skin =
   material  // Dragon_Skin
   {
      texture
      {
         pigment
         {
            bozo
            color_map
            {
               [ 0.0     rgbft <0.109383, 0.890617, 0.109383, 0.0, 0.0> ]
               [ 0.5     rgbft <0.053166, 0.675967, 0.053166, 0.0, 0.0> ]
               [ 0.5     rgbft <0.0, 0.666667, 0.0, 0.0, 0.0> ]
               [ 1.0     rgbft <0.0, 0.479133, 0.0, 0.0, 0.0> ]
            }
            turbulence 0.9
            ramp_wave
         }
         normal
         {
            bumps , 0.05
            scale  0.00005
         }
         finish
         {
            ambient 0.4
            phong_size 0.0
            roughness 0.0
            reflection 0.1
            crand 0.15
         }
      }
   }

Thanks in advance.





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Attachments:
Download 'dragon.jpg' (12 KB)

Preview of image 'dragon.jpg'

Mark Jeghers wrote:
> 
> Can anyone point me to what is wrong?
> 
> I've circled the artifact in question in the attached image.
> 
> I'm using Moray 3.3 and POV-Ray 3.1 (it looks the same with POV-Ray 3.5),
> (THIS IS NOT A MORAY QUESTION)
> 
> The object is a rotational sweep.

It likely has nothing to do with the texture at all and more to do with a
mathematical inaccuracy in the sweep object. How do you solve it? I don't
really know since I don't know how rotational sweeps are created in Moray.
You might try asking a Moray user...

-- 
Ken Tyler

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It looks a bit like a coincident surface where two objects glued together 
almost overlayed creating self-casting shadow artefacts.

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>The object is a rotational sweep.

If it's a sor or lathe, try adding the 'sturm' keyword in your object.  I
had this exact problem the other day.

-David

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