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Poser F.A.Q (Updated: 2019 Jan 31 1:28 pm)

 Subject: Figure setup and Inverse Kinematics Problem

kojot303 opened this issue on Apr 11, 2019 · 4 posts

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  kojot303    ( ) ( posted at 10:32AM Thu, 11 April 2019 

Hi, I would greatly appreciate if someone could help me identify the issue I have with IK for newly created figures.

Once I create IK chains and turn IK ON, when I try to move figure's hands and feet a bit further from the body, outlined object for hands and feet appear outside the selected object that I move. When I release the object that I'm moving the outlines disappear. This seems to be the indicator that something is wrong with the figure setup.

When I pose the figure while IK is ON and when I save the project and reopen it, the pose is completely ruined since both feet and arms are now rotated to some "unnatural" position. The pose and the animation is now completely useless since limbs are no longer positioned properly.

Also, when I pose the figure with IK turned ON, and when I turn IK OFF, suddenly hands and feet move to some other position and the pose is ruined again. This is happening with every figure I setup. I have the same issue in both Poser Pro 2014 and Poser Pro 11.

I am not sure if I am explaining the issue well, so I have attached a link to the video that will probably present the issue better. VIDEO LINK

I'm really stuck here so any suggestion is more than welcome.

  almostfm    ( ) ( posted at 2:03AM Tue, 16 April 2019  · @4350153

From my experience, the "outlines" seem to happen if you try and move the hand or foot further than it can move and still be attached to the body, and that's what I'm seeing in the video. If you don't pull the hand (for example) so far from the body that you get the outlines, I'll bet your problems with the pose being screwed up will go away. If a character's arm is, for example, 2 1/2 poser units long and you try and move the hand 4 units from the body, Poser then has to guess at a whole bunch of position and rotation values.

  kojot303    ( ) ( posted at 12:25PM Wed, 17 April 2019  · @4350228

@almostfm That makes sense. However, Andy figure and other figures such as V4, M4, etc, don't have this issue. If you take Andy for example, it doesn't matter how long I stretch its arms and feet while IK is ON, reopening the project with saved poses will stay intact, IK chain "goals" will stay in the saved position. If I try to do the same with my custom figures and save the pose while IK is ON, upon reopening the project "goals" will be rotated in some other position.

I'm guessing this has to do something with the fact that IK re-parents goals to the body, so I am not sure what I'm missing.

  kojot303    ( ) ( posted at 11:20AM Wed, 08 May 2019  · @4351440

Hi all, Any other ideas?

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