Can anyone offer advice about how to eliminate jitter in wood during an
animation. I am not using jitter or crand. I am using the standard material
DMFDarkOak which is scaled in the material and in the object. Any advice will be
appreciated.

Regards
        Stephen

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Stephen McAvoy <McA### [at] aolcom> wrote:
> Can anyone offer advice about how to eliminate jitter in wood during an
> animation. I am not using jitter or crand. I am using the standard material
> DMFDarkOak which is scaled in the material and in the object. Any advice will be
> appreciated.

  Try scaling the texture bigger. If it results in something you don't want
to use, then I suppose there's no other way than to use a very high-quality
antialiasing (and turn antialiasing jittering off).

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -

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On 19 Sep 2003 07:58:47 -0400, Warp <war### [at] tagpovrayorg> wrote:

>  Try scaling the texture bigger. If it results in something you don't want
>to use, then I suppose there's no other way than to use a very high-quality
>antialiasing (and turn antialiasing jittering off).
Thanks Warp, I still get jittering with 
Antialias_Threshold = 0.0
Antialias_Depth = 3
Sampling_Method = 1

And I never use jittering in animations, well not after the first one.
I've picked a different wood type and not scaled it down so much.

Regards
        Stephen

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Stephen McAvoy wrote:
> Can anyone offer advice about how to eliminate jitter in wood during
> an animation. I am not using jitter or crand. I am using the standard
> material DMFDarkOak which is scaled in the material and in the
> object. Any advice will be appreciated.
>
> Regards
>         Stephen

Hi!

Just an idea: maybe it's not a special jitter with wood, but only especially
visible with it:

Have you only turned jitter off:
Jitter=off
or have you turned down the jitteramount, too:
Jitter_Amount=0.0
I'm not sure, but in former versions of POVRay (pre-3.5) turning off jitter
was not enough. At least that's what I experienced. Maybe this strange
behaviour is still alive...

Kalle

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On Sat, 20 Sep 2003 19:26:10 +0200, "KalleK" <kal### [at] gmxde> wrote:

>Have you only turned jitter off:
>Jitter=off
>or have you turned down the jitteramount, too:
>Jitter_Amount=0.0
>I'm not sure, but in former versions of POVRay (pre-3.5) turning off jitter
>was not enough. At least that's what I experienced. Maybe this strange
>behaviour is still alive...

Yes, I have Jitter=off and Jitter_Amount=0.0 I always use those settings in
animations. I think it is the turbulence in woods that show up. Especially on
the end grain. Warps suggestion about scaling is probably the best advice. I
changed the wood in my model and got better results. I will post the animation
in p.b.a


Regards
        Stephen

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news:o91rmvg2bk6sjr3pbus3hmqsra8l96tn95@4ax.com...
> On Sat, 20 Sep 2003 19:26:10 +0200, "KalleK" <kal### [at] gmxde> wrote:
>
> >Have you only turned jitter off:
> >Jitter=off
> >or have you turned down the jitteramount, too:
> >Jitter_Amount=0.0
> >I'm not sure, but in former versions of POVRay (pre-3.5) turning off jitter
> >was not enough. At least that's what I experienced. Maybe this strange
> >behaviour is still alive...
>
> Yes, I have Jitter=off and Jitter_Amount=0.0 I always use those settings in
> animations. I think it is the turbulence in woods that show up. Especially on
> the end grain. Warps suggestion about scaling is probably the best advice. I
> changed the wood in my model and got better results. I will post the animation
> in p.b.a
>
>
> Regards
>         Stephen

Try using a higher Antialias_Depth value. I have a similar problem when using
planes with checker textures. Near the horizon I get some jitter but it doesn't
change through different frames (unless I change camera angle).

Using a higher depth, I get less jitter, but you can't get completely rid of it.

You can also try using sampling method 2 (slower) or blurring the final image(s)
a bit with a picture modifying program.

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On Thu, 6 May 2004 19:11:05 -0300, "Nicolas Alvarez"
<nic### [at] yahoocomar> wrote:

>Try using a higher Antialias_Depth value

Gosh, you must have been going through some old posts :-} 
Thanks for replying. I've got a lot to do just now but when I get some
time I try your suggestion.

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