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  Change Center of a Rotation  (Read 1001 times)
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Offline Furda

Innocent Bystander





« Posted 2003-05-22 14:47:42 »

Hi
I have a camera view with x, y and z translations and a rotation around the y axis (java3d coordinate system). the translations in all axis work fine. i have a problem with the rotation: the view rotates on a circle with the center on 0,0,0. I want to rotate the camera on the actual position where I now am with the camera. How can I change the rotation center point of the TransformGroup I am using for rotation? The translations are made in an other TransformGroup.


Thanks for help in advance!
Offline Herkules

Senior Devvie




Friendly fire isn't friendly!


« Reply #1 - Posted 2003-05-22 15:03:04 »

This depends on the order of transforms as they are applied. You first move, than turn. If you do it the other way round, you get what you want.

Now I don't know your system. But this can be accomplished with 2 TGs in the graph or by simple changing the order of matrix multiplies.

HARDCODE    --     DRTS/FlyingGuns/JPilot/JXInput  --    skype me: joerg.plewe
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