Hi All, I''m working on an SGI Oynx3200, writing a serious visualization application, available on sourceforge (http://mvs.sourceforge.net), and I was looking for some input. I need to figure out an translation controller that can be used with a regular mouse. The controller must be able to manipulate each translation co-ordinate seperately. I''m using the SGI Performer graphics library, which really rocks for doing the mathematics so far. The function will have inputs of delta mouse movement (dX/dY), and produces dX/dY/dZ coordinates from this. I''m using Ken Shoemakes Arcball Quaternion controller for my rotation system, so if anybody can point me to similar ideas for a translation controller, I''d be most grateful. Thanks all.

Hmm... have you ever played homeworld? I kinda like their translation interface. X and Y movements happen when the user is holding down one button and dragging. If both right and left buttons are held while being dragged, then movement in the Z direction occurs.

If you''re on an Onyx, you''ve got a three button mouse. 1 button for each axis???

Timkin