POV-Ray : Newsgroups : povray.unofficial.patches : mechsim and camera help Server Time
4 Dec 2024 21:37:34 EST (-0500)
  mechsim and camera help (Message 1 to 3 of 3)  
From: dchr25
Subject: mechsim and camera help
Date: 9 Feb 2006 06:10:00
Message: <web.43eb223370c02efa22cb8830@news.povray.org>
Hello everyone,

I am practising on mechsim and gravity, what I am trying to do is to drop a
ball from a height (on Y axis) and let it bounce on the floor. X is
constant, Z is constant and Y varies along time.

I have seen the tutorial02.pov for this, but I dont' really understand the
way world's camera and XYZ coordinates are defined and used. In that
example it defines gravity <0, 0, -9.81>, where it puts the gravity force
on Z axis instead of Y axis.

Could you provide some help on this.

many thanks,
dimitris.


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From: Christoph Hormann
Subject: Re: mechsim and camera help
Date: 9 Feb 2006 06:20:03
Message: <dsf8fa$m1s$1@chho.imagico.de>
dchr25 wrote:
> Hello everyone,
> 
> I am practising on mechsim and gravity, what I am trying to do is to drop a
> ball from a height (on Y axis) and let it bounce on the floor. X is
> constant, Z is constant and Y varies along time.
> 
> I have seen the tutorial02.pov for this, but I dont' really understand the
> way world's camera and XYZ coordinates are defined and used. In that
> example it defines gravity <0, 0, -9.81>, where it puts the gravity force
> on Z axis instead of Y axis.

The mechsim tutorial and sample scenes use a z=up coordinate system. 
Mechsim works for both this and the standard POV-Ray system.

Christoph

-- 
POV-Ray tutorials, include files, Landscape of the week:
http://www.imagico.de/ (Last updated 31 Oct. 2005)
MegaPOV with mechanics simulation: http://megapov.inetart.net/


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From: dchr25
Subject: Re: mechsim and camera help
Date: 9 Feb 2006 08:55:00
Message: <web.43eb489b621d8723a22cb8830@news.povray.org>
Christoph Hormann <chr### [at] gmxde> wrote:
>
> The mechsim tutorial and sample scenes use a z=up coordinate system.
> Mechsim works for both this and the standard POV-Ray system.
>
> Christoph

Many thanks Christoph.

>
> --
> POV-Ray tutorials, include files, Landscape of the week:
> http://www.imagico.de/ (Last updated 31 Oct. 2005)
> MegaPOV with mechanics simulation: http://megapov.inetart.net/


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