[ODE] Universal Joints

Russell Bartley russellbartley at kromestudios.com
Sun Jan 7 17:45:36 MST 2007

    I'm using a lot of universal joints in ODE, and realised that the universal joints can react badly if I assume the 2 axes are being set to sensible values through the 
dJointSetUniversalAnchor() function. 

    I have come across a few examples where the 2 axes of a Universal joint end up being close to parallel if the 2 bodies attached by the joint have a 90 degree roll difference. 

    Is this intentional? I have started to calculate my aces manually now and the joint seem to be sorting themselves out. 

    I just wanted to confirm this so I could deal with it.




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