how to tell if animcurve is a set driven key

[leeG]

I am trying to write a script to select all animation curves but exclude ones that are set driven keys.

My first guess is that a set driven key has both an input and output to the curve.

Is there another way to tell?

Thanks

Lee

[matt estela]

A million years ago I wrote a script to lock sdk's so their curves couldn't be nudged in the graph editor. Looking at the code, I used the setDrivenKeyframe command to query for curves. Maybe that's a start. 

http://www.tokeru.com/t/bin/view/Maya/MayaRigging#Lock_Set_Driven_Keys

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[Roy Nieterau]

Hey Lee,

Creating a set driven key results in a curve not driven by time but another unit. You could in theory create a set driven key from the time node to an attribute which should (didn't test this) result in a normal key (animationCurve).

In Maya you can seperate the different versions based on the nodeType.

For example, selecting all animation curves driven by time would be possible with:

import maya.cmds as mc
animCurves = mc.ls(type=("animCurveTL","animCurveTU","animCurveTA","animCurveTT"))
if animCurves:
    mc.select(animCurves,r=1)

And selecting all animation curves driven by another unit would be (this would result in selection driven keys):

import maya.cmds as mc
animCurves = mc.ls(type=("animCurveUL","animCurveUU","animCurveUA","animCurveUT"))
if animCurves:
    mc.select(animCurves,r=1)

here's some more information:
http://www.vfxoverflow.com/questions/how-can-i-select-all-the-animation-curves-in-a-scene-using-mel

Note: My example code is Python. The linked webpage shows a MEL example.

-Roy

[Lee Gramling]

Thanks Matt and Roy !

lee