Page MenuHome
Create Task
Maniphest T55608

NLA action strip doesn't perform full rotation as originally keyed stashed action
Closed, ArchivedPublic
Actions

Description

Tested on Linux (2.79.5 - f8a3636374b)

The test blend file included here shown an example with few stashed actions, three of which are brought to use in

20180619_basic_animation_amature_0002.blend615 KBDownload

  • NlaTrack : move up Y
  • NlaTrack.001: walk; extrapolation=Nothing, Blending=Add, Repeat=5.4
  • NlaTrack.002 - turn right; extrapolation=Hold Forward, Blending=Add, Repeat=1

The stashed action 'turn right' turns 90 degrees, but when brought up to NlaTrack.002, the action turned less than 90 (as shown in the included test file above), leading to the pose doesn't line up with next route of action (turning right) as shown in the following test file:

20180619_basic_animation_amature_0003.blend615 KBDownload

Related Objects

Event Timeline

Hoang Duy Tran (hoangduytran) created this task.Jun 24 2018, 11:00 PM
Christopher_Anderssarian added projects: BF Blender, Animation & Rigging.Jul 9 2018, 10:01 PM
Bastien Montagne (mont29) changed the task status from Unknown Status to Unknown Status.Jul 23 2018, 10:31 AM
Bastien Montagne (mont29) claimed this task.
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).

You’ll have to explain me why you key the location for your 'rotate' actions, and the rotation of root bone (why root baone at all actually, since it doesn’t move) for your 'walk' action…

But anyway, using quaternions for rotation has a few down-sides, one being that mere addition does not actually give expected results at all. This is currently considered a TODO in our animation system afaik, not a bug in any case, thanks for the report anyway.

Hoang Duy Tran (hoangduytran) added a comment.Jul 24 2018, 5:55 AM

You're right, I don't need the action turn, however, the armature doesn't turn as originally keyed, as shown in the below image:

I don't know if this is TODO or a bug. I keyed one way, only assembled to build up a sequence of actions and the armature doesn't work as originally keyed. To my perception, from a user's view, this is a BUG.