CGTalk - python/MEL query question

View Full Version : python/MEL query question

misterwolfy

09-12-2010, 02:53 AM

This code will query whether a node has keyframes at a certain time. Then I can do various things to those keys. How do I query whether a particular channel has keys, to refine the query?

hasKey = mc.keyframe( selection, query=True, time=(theTime, theTime))
if hasKey != None:
print 'found keys!'

NaughtyNathan

09-12-2010, 01:59 PM

er.. just query the particular channel..?

mc.keyframe( 'pCube.translateY', query=1)
additionally, animation keys are stored in animCurve nodes, so alternatively, depending on your scenario, if you want to check if a particular channel has keys, you could check if it is connected to an animCurve.

mc.listConnections('pCube1.translateY',type='animCurve')
incidentally, python has an innate understanding of everything being either true or false, so it is not very pythonic to compare things when boolean testing.

if hasKey != None:is much better asif hasKey:and far easier to understand the intention!
:nathaN

misterwolfy

09-16-2010, 03:24 PM

Thanks Nathan, great info!

CGTalk Moderation

09-16-2010, 03:24 PM

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.