Forums > Jitter

.obj – Speed of rotation

Mar 16 2006 | 4:21 pm


I have been trying to measure the average speed of rotation (throughout all dimensions) of an .obj that has been manually spun (using a mouse or alternative HI) using the object.

The idea behind this is to use it as a tempo control for sample playback and so the resulting output figure must be constant but so far have not managed to programme anything that achieves this.

Has anybody tried this before or have any ideas how this could be achieved?

I have been trying this out using the help patch.



Mar 16 2006 | 8:18 pm

You’ll need to get into some math to do this. It might be easier for
you to grapple with this stuff in JS or Java, and the
Jitter3DUtils.js jsextension would be a good starting point for you
to approach the different types of rotation vectors (angle/axis, XYZ,

In a future version of, we could add a gettable/
settable delta-angle axis increment used internally to
Though for now, you’ll need to manage this yourself with something
like the Jitter3DUtils.js (with which can be simulated).


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