POV-Ray : Newsgroups : povray.unofficial.patches : MegaPOV 0.5+ "bucking" particles Server Time
31 Oct 2024 23:32:44 EDT (-0400)
  MegaPOV 0.5+ "bucking" particles (Message 1 to 4 of 4)  
From: Paul Blaszczyk
Subject: MegaPOV 0.5+ "bucking" particles
Date: 20 May 2002 17:57:16
Message: <3ce9713c$1@news.povray.org>
Hi,

i will make a small animation with particles in slow motion.

Parameters i'm using in INI file:
Initial_Clock = 0
Final_Clock = 50.0
Initial_Frame = 0
Final_Frame = 240

But about every ten up twelve frames the complete "order" of particles is
changing thru the whole length of the particle stream!!

And ideas how to fix?? Or it's a bug of the particle_system?

Paul


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From: JRG
Subject: Re: MegaPOV 0.5+ "bucking" particles
Date: 21 May 2002 12:50:19
Message: <3cea7acb$1@news.povray.org>
"Paul Blaszczyk" wrote:
> Hi,
>
> i will make a small animation with particles in slow motion.
>
> Parameters i'm using in INI file:
> Initial_Clock = 0
> Final_Clock = 50.0
> Initial_Frame = 0
> Final_Frame = 240
>
> But about every ten up twelve frames the complete "order" of particles is
> changing thru the whole length of the particle stream!!
>
> And ideas how to fix?? Or it's a bug of the particle_system?

Agh... final_clock 50?!

Apart from that, remember that this particle system doesn't have support for moving
environments IIRC. Does it have something to do with this?


--
Jonathan.

Home: http://digilander.iol.it/jrgpov


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From: Paul Blaszczyk
Subject: Re: MegaPOV 0.5+ "bucking" particles
Date: 24 May 2002 22:25:19
Message: <3ceef60f@news.povray.org>
> Agh... final_clock 50?!
Yes..i'm stretching 50 "frames" to 240  (1/5th speed of "real time")

> Apart from that, remember that this particle system doesn't have support
for moving
> environments IIRC. Does it have something to do with this?
I'm not moving environment..i only using spray

Here's the movie:
http://easywawi.de/water_slowmotion.avi


Paul


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From: JRG
Subject: Re: MegaPOV 0.5+ "bucking" particles
Date: 25 May 2002 10:34:04
Message: <3cefa0dc@news.povray.org>
"Paul Blaszczyk" wrote:
>
> > Agh... final_clock 50?!
> Yes..i'm stretching 50 "frames" to 240  (1/5th speed of "real time")

In a simple scene like this the default final_clock 1 is the best choice. Normalizing
the clock makes things much easier to set up.

> > Apart from that, remember that this particle system doesn't have support
> for moving
> > environments IIRC. Does it have something to do with this?
> I'm not moving environment..i only using spray

Without any code I must admit I'm clueless. First of all I would use final_clock 1.
You may want to change something in your code to fit the new clock delta.

The equation final_clock = number of frames is far from being a good choice. In such
a simple scene stick with final_clock 1. The clock will be interpolated from 0 to 1
during the animation, from frame_initial to frame_final. The number of frames and the
clock are no way correlated.

--
Jonathan.

Home: http://digilander.iol.it/jrgpov


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