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3 Dimensional Chat / Gimbal Lock and Rotation from Hell

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Licaon
22
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Joined: 30th Sep 2003
Location: Far in the south
Posted: 29th Dec 2003 16:36
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Hi. After singular success in the flatland, i've stepped in the planet of cubes,spheres and triple-axis.

I'd made a program that 'locks' an enemy and orients the ship towards it.
It's basicaly a dummy object in the center of the seeker ship. It points to destination via "point to " method, the resulting angles are taken as destination for the seeker rotation (using turn, pitch and roll). Now, here comes the horror:

Gimbal lock

Every time the enemy is located more than 90 deg (having deg orientation 0 as z+) the angles get messed up. Result: the ship only chases targets directly in front of it. any thing beyond that narrow cone, makes the ship to go berserk in to the deep space.

any help? please?

9 of every 10 people are exactly the 90 %
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Philip
23
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Joined: 15th Jun 2003
Location: United Kingdom
Posted: 29th Dec 2003 17:21
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Use quarternions? They do not suffer from gimbal lock.

Philip

What do you mean, bears aren't supposed to wear hats and a tie? P1.3ghz / 384 megs / GeForce MX 5200 128meg / WinXP home
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Licaon
22
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Joined: 30th Sep 2003
Location: Far in the south
Posted: 29th Dec 2003 17:55
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mmm...i'll look onto it. Let you know how it goes

9 of every 10 people are exactly the 90 %
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Licaon
22
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Joined: 30th Sep 2003
Location: Far in the south
Posted: 29th Dec 2003 18:14
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looked about quaternions, no idea on how implement it...it's the only way?

9 of every 10 people are exactly the 90 %
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