Subject:
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Re: Animation problem
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Newsgroups:
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lugnet.cad
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Date:
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Wed, 23 Aug 2006 10:54:12 GMT
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Viewed:
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1529 times
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In lugnet.cad, Jindrich Kubec wrote:
> Hi,
>
> I've made a simple animation in PovRay. I've edited the file coming out
> from L3P with these camera commands:
>
> camera {
> location <52+ 550 * sin(2*pi*clock),-140,5+ 550 * cos(2*pi*clock )>
> sky -y
> right -4/3*x
> look_at <52,-60,0>
> angle 65
> rotate <0,0,0>
> }
>
> This is simply camera rotating around the object.
>
> Light is static, one and simple:
> light_source { <452,-1320,-763> rgb 0.7 }
>
> I've generated quite a lot of frames, put them together (anyone has some
> good cmdline driven tool to do that?) and...
>
> Something is wrong. The shadows are pulsating. It's easy to find two
> subsequent frames which have totally different shadows.
>
> I'm using POV 3.5 on Windows, radiosity is turned on:
>
> global_settings {
> radiosity {
> pretrace_start 0.08
> pretrace_end 0.04
> count 35
> nearest_count 5
> error_bound 1.8
> recursion_limit 3
> low_error_factor .5
> gray_threshold 0.0
> minimum_reuse 0.015
> brightness 1
> adc_bailout 0.01/2
> }
> }
>
> I do admit I'm just a half-ape just cut'n'pasting from various sources :o)
>
> So, anybody knows where is the problem? Why does it look like the
> shadows are 'random'?
>
> Regards,
> Jindroush
> http://www.kostky.org - For Czech LEGO fans.
Hi Jindrich,
Did I briefly speak to you at 1000steine land about this?
Try turning off radiosity and see if the problem goes away. The way that povray
approximates radiosity could easily be to blame.
Tim
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Message has 2 Replies:
 | | Re: Animation problem
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| Hello, when I assembled my small animations/motion blur pictures, I sometimes forgotten to clean the "trash" of previous povray runs. For example if you run 8 pictures with some lightning setup, frames file01... to file08... will be created. After (...) (18 years ago, 23-Aug-06, to lugnet.cad, FTX)
| | | Re: Animation problem
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| (...) yep ;) (...) yep. Tried that with full-pal frames without any radiosity (2 light sources - one high up in the sky rgb 1.4, second a bit behind & above the camera rgb 0.5 to soften the shadows a bit. It's _much_ better, better said: the are no (...) (18 years ago, 25-Aug-06, to lugnet.cad)
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Message is in Reply To:
| | Animation problem
|
| Hi, I've made a simple animation in PovRay. I've edited the file coming out from L3P with these camera commands: camera { location <52+ 550 * sin(2*pi*clock),-140,5+ 550 * cos(2*pi*clock )> sky -y right -4/3*x look_at <52,-60,0> angle 65 rotate (...) (18 years ago, 22-Aug-06, to lugnet.cad)
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