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Dark GDK / Gibel Lock

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aersixb9
16
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Joined: 29th Nov 2007
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Posted: 7th Dec 2007 04:53
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Does this product (GDK) suffer from gimbel lock, especially when considering using two camera rotation functions inside the loop? (For example:

while ( LoopGDK ( ) )
{
dbSync ( );
dbPositionCamera ( 0, 0, x );
dbTurnCameraRight(dbMouseMoveX());
dbPitchCameraDown(dbMouseMoveY());

}

)))

Is that legal code? Or does it cause gimbel lock? I think I'm getting some gimbel lock, that is my object keeps getting rotated oddly and probably incorrectly. Does anyone know the solution to this?
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Morcilla
21
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Joined: 1st Dec 2002
Location: Spain
Posted: 7th Dec 2007 12:12 Edited at: 7th Dec 2007 12:14
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I think that if the Apollo 11 had Gimbal Lock, we are going to have it as well. Just my opinion, of course.

Hmmm, I think that for it to happen, some rotation must equal 90ยบ, as GL happens when one axis is rotated and falls over an original one and (like Y becoming Z) and there are still pending rotations around X & Z.

All this belongs to Euler XYZ rotations, the functions that you use above are 'free' rotation ones, and as far as I know, they should -not- get affected by GL.

Quote: "my object keeps getting rotated oddly and probably incorrectly"


That's the feeling that everybody has when he or she begins to rotate objects. Don't know what are you trying to do...
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