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Somnus

Gimble lock

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There are some other systems, my favorite one uses 3 vectors to position an object (UVN). There is one vector for forward(N), up(V), and right(U). The matrix looks like this...

/ Ux Vx Nx 0 /
/ Uy Vy Ny 0 /
/ Uz Vz Nz 0 /
/ 0 0 0 1 /

Look to http://www.gamedev.net/reference/articles/article405.asp for more details

http://3d.n3.net/

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Thanks. I feel I''m on the right track now. Just as a matter of intrest, I''ve been doing research recently and I''ve uncovered another useful site with information on gimble lock at 3dgamedev.com -- specificly the article "Eulers Angles are Evil" by Steve Baker.

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