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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