Hi all:

I'm working in the current IRTC stills topic and everything works fine till
now except for the media in this model.
I think fire looks realistic enough, except for that strange "yellow tail".

The clouds are four semitransparent planes (all with the hollow keyword).
I've tried another possible combinations (the Gilles' fastclouds.inc file
and the fastsky.inc file from Rune).

If I use the clouds (anyone of them) this yellow tail appears. If I do not
it doesn't appear.

Assumed Gamma is 1

The giraffe and the media container are bicubic patches (from hamapatch).
The scene is made in Moray (z is up) and rendered in the last pov candidate.

The material is as it follows:

#declare jirafa_fuego_txt =
   material  // jirafa_fuego_txt


      texture

          pigment
         {
            color rgbft <0.0, 0.0, 0.0, 1.0, 1.0>
         }
         finish
         {
            ambient 0.0
            diffuse 0.0
         }
      }
      interior
      {
         media
         {
            samples 10,10
            emission rgbf <1.0, 0.7604, 0.0, 0.0104>
            scattering
            {
               1 // isotropic scattering
               extinction 0.2
            }
            density
            {
               gradient z
               density_map
               {
                  [0.0
                     bozo
                     color_map
                     {
                        [ 0.0     rgbft <0.0, 0.0, 0.0, 1.0, 1.0> ]
                        [ 0.370107  rgbft <0.0, 0.0, 0.0, 1.0, 1.0> ]
                        [ 0.494662  rgbft <1.0, 0.0104, 0.0, 0.0, 0.0> ]
                        [ 0.740214  rgbft <1.0, 0.0104, 0.0, 0.0, 0.0> ]
                        [ 0.975089  rgbft <1.0, 0.718733, 0.1354, 0.0104,
0.0104> ]
                        [ 1.0     rgbft <1.0, 0.0104, 0.0, 0.0, 0.0> ]
                     }
                     turbulence <0.0, 0.2, 0.5>
                     phase 2.79
                     triangle_wave
                     scale  <1.0, 0.1, 0.5>
                  ]
                  [0.5
                     gradient z
                     color_map
                     {
                        [ 0.0     rgbft <0.0, 0.0, 0.0, 1.0, 1.0> ]
                        [ 1.0     rgbft <0.0, 0.0, 0.0, 1.0, 1.0> ]
                     }
                  ]
                  [1.0
                     gradient z
                     color_map
                     {
                        [ 0.0     rgbft <0.0, 0.0, 0.0, 1.0, 1.0> ]
                        [ 1.0     rgbft <0.0, 0.0, 0.0, 1.0, 1.0> ]
                     }
                  ]
               }
               turbulence <0.0, 1.0, 0.2>
               ramp_wave
               scale  <20.0, 20.0, 40.0>
               translate    <0.0, 0.0, -5.0>
            }
         }
      }
      scale  <0.2, 0.8, 0.8>
      rotate -20.0 * x
   }

Can someone help me with this?

Thanks in advance.

Txemi Jendrix
tji### [at] euskalnetnet
http://www.geocities.com/txemijendrix

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Attachments:
Download 'giraffe.jpg' (17 KB)

Preview of image 'giraffe.jpg'

Sorry, 2 brackets where lost in the copy process (one after material and
another after texture).

This has nothing to do with the question asked in the previous post, the
problem is the same.

Here is the image without cloud for comparission.

Bye

Txemi Jendrix
tji### [at] euskalnetnet
http://www.geocities.com/txemijendrix

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Attachments:
Download 'giraffe2.jpg' (13 KB)

Preview of image 'giraffe2.jpg'

> If I use the clouds (anyone of them) this yellow tail
> appears. If I do not it doesn't appear.

Could it be max_trace_level is set too low? It's a nice giraffe, from what I
can see on this distance. :o)  Looking closely, I think there's a problem
with the back-left leg; it seems to be cut similar to the yellow tail..
Maybe something intersect with the objects, or you specified bounding boxes
that cut the object.

Have you tried the scene from other camera locations?
I agree this is strange...


Regards,
Hugo

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I see the artifact on the version without clouds, too, it's just darker.

I suspect the container object isn't closed.

 - Slime
[ http://www.slimeland.com/ ]

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3cf7e3a6$1@news.povray.org...
> > If I use the clouds (anyone of them) this yellow tail
> > appears. If I do not it doesn't appear.
>
> Could it be max_trace_level is set too low?

I don't think so, its at 255.

> It's a nice giraffe, from what I can see on this distance. :o)

The giraffe is a free mdl model (Hash Animation Master) from
http://www.eggington.net/Hash/Models/
imported in hamapatch (even though I spent 3 hours closing patches that were
imported as 5 points patches).

> Looking closely, I think there's a problem
> with the back-left leg; it seems to be cut similar to the yellow tail..

No, it's a question of perspective. Perhaps you are refering to the actual
giraffe tail that is behind the back left leg.

> Maybe something intersect with the objects, or you specified bounding
boxes
> that cut the object.


any bounding box neither.

> Have you tried the scene from other camera locations?

Yes, and rotated the giraffe to different angles, but the yellow tail it's
still there.

> I agree this is strange...

Me too. Thank you for your interest Hugo.

Bye.

Txemi Jendrix
tji### [at] euskalnetnet
http://www.geocities.com/txemijendrix

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3cf7e4b0$1@news.povray.org...
> I see the artifact on the version without clouds, too, it's just darker.

Now that you say it, I see it too.

> I suspect the container object isn't closed.

You are right. I've opened the hamapatch file and the end was open (even
though it is a four point patch).
Should have checked it by myself before posting. Now it looks fine.
Thank you very much for your help (there is nothing like these newsgroups
: )

Bye

Txemi Jendrix
tji### [at] euskalnetnet
http://www.geocities.com/txemijendrix

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Attachments:
Download 'giraffe3.jpg' (27 KB)

Preview of image 'giraffe3.jpg'

I love it when things go like this.... :-)

--
Apache
POV-Ray Cloth experiments: http://geitenkaas.dns2go.com/experiments/
Email: apa### [at] yahoocom
ICQ: 146690431

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