Pruning keys with the FBX python SDK

[bob.w]

View in #maya on Slack

@andrew: If anyone is interested in using the FBX SDK to reduce keys instead of the Dupe and Bake method. I figured out how to walk an FBX animation stack and edit all the curves outside of a specific range.

layer = stack.GetSrcObject()

animStart = FbxCommon.FbxTime()
animStart.SetFrame(30)
animEnd = FbxCommon.FbxTime()
animEnd.SetFrame(60)
animRange = FbxCommon.FbxTimeSpan(animStart, animEnd)

for i in range(layer.GetMemberCount()):
    animNode = layer.GetMember(i)
    if animNode.IsAnimated():
        print 'node', i
        for c in range(animNode.GetChannelsCount()):
            print 'curve', c
            animCurve = animNode.GetCurve(c)
            animCurve.KeyModifyBegin()
            
            for k in reversed(range(animCurve.KeyGetCount())):
                keyTime = animCurve.KeyGetTime(k)
                if not animRange.IsInside(keyTime):
                    animCurve.KeyRemove(k)
            
            animCurve.KeyModifyEnd()

[bob.w]

Using Python FBX SDK to Edit Animation

Here is a gist I put together with some of the calls I’ve developed for editing our FBX animation intermediate files. There is a call for renaming the animation take and a call for deleting keys outside of a passed range. FBX Animation Editing

Linking to the newer version of this post.