Kevinaz nous apporta ses lumieres en ce 06-03-2007 18:16:

> However, what is "handedness"?

> Kevinaz

> P.S. I got in touch with the author of ani2pov, and he's working on fixing
> this.


It's the way the coordinates and rotations are interpreted.
POV-Ray use left handedness. With that handedness, when you point your left 
thumg toward the positive direction of an axis and curl your fingers, they go 
the direction of a positive rotation.
+X is to the right.
+Y is up.
+Z is away.
Positive rotation is anti-clockwise. Just as in my geometry classes.

Many CAD programms have +Y been away and +Z up and use right handedness where 
positive rotation is clockwise.

-- 
Alain
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I abhor war and view it as the greatest scourge of mankind.
Thomas Jefferson

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