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Question by cj_shaw · Jun 26, 2019 at 11:24 PM · rotationrotatearound

Unwanted translation when rotating axisymettric object

I have the following object, which has been carefully set to be aligned so it is axisymettric about Z, eg it is XYZ aligned - within 0.1mm.

alt text

Rotating by the blue axis results in the position XYZ changing, by up to 3 meters, despite the object visibly staying where it is and having no wobble. I am trying to use a script for the rotation, eg;

 transform.RotateAround(point.position, point.forward, -20 * speed[curStep] * Time.deltaTime);

When inputting the transform as the object itself, I get a chaotic flying motion. It seems like the XYZ of the transform is causing this. So - why does it happen and what is the solution? Please keep in mind I'm a beginner, this is my first project.

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