WorldViz User Forum - I have a question about link data

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- - I have a question about link data (https://forum.worldviz.com/showthread.php?t=2269)

I have a question about link data

Hi.
Now I finally solve my problem(I posted before).
But only one thing make me confused.
When I use link, source data is different from destination data.

Uh, for example....

Code:

sensor=viz.addSensor('patriot')

hand=viz.add('hand.cfg')

bone=hand.getBone('bone index 1-2')

bone.lock()

link=viz.link(sensor,bone)



def print(e):

    print sensor.getEuler(), bone.getEuler()

viz.callback(viz.UPDATE_EVENT,print)

bone is linked, so I think "sensor.getEuler() and bone.getEuler() are same data, but it's different.

Do you have any idea for this?

Thank you very much.

Link objects do not get updated until later on in the update cycle. There are a few ways to deal with this.

1) Register your callback with a priority greater than viz.PRIORITY_LINKS

2) Manually update the link before retrieving the values from the bone:

Code:

link.update()

print sensor.getEuler(), bone.getEuler()

3) Retrieve the euler values directly from the link:

Code:

print link.getEuler()

Hi, farshizzo.
Thank you for your advice.
I didn't know "viz.PRIORITY_LINKS".
I'll try the manually update method you taught me.

Thank you again.