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By vtoddw - 4 Years Ago
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Hello,
I've been using iClone7 with 3DExchange 7 pipeline and CC3 to Animate my DAZ characters for a Unity project for a few years now. I just recently noticed a strange issue that is really killing my workflow. Typically, I will export a character from DAZ, touch it up in CC3, animate it in IClone7, import to Unity3D 20201.2f1 and use the latest UMotion to touch up any fine tuning on the animation clips to get my characters fully animated in game. The issue I'm seeing is that there is a strange offset occurring on my characters feet position on the FBX as soon as it is imported in Unity.
Here is an example of what the animation looks like on the same character in 3DExchage just before I export the animation clip as FBX:
Here is what it looks like as soon as I import it in Unity:
As you can see the front foot dips through the ground and the back foot lifts up. This also happens on the Unity default avatar, albeit a bit differently, so I'm fairly certain my DAZ character / RIG is not the problem:
I have not been able to verify that the animation looks this way in any other application, so I'm not 100% sure if this is a Unity or an iClone7 problem. I have however, imported the same animation clip back into 3D Exchange and then iClone, which in both cases the animation looks perfectly fine with the feet touching the floor without lifting or penetrating. By the looks of it, it seems as though there is some sort of rotation being applied pivoting about the X (Roll), but that's just a guess.
Here are my export settings when exporting animation clips from 3D Exchange to Unity as FBX:
I have of course tried many variations of the import settings for the animation clip in unity, but nothing appears to fix this issue:
It's extremely counter productive to need to fix these feet issues in UMotion after the clip is imported in Unity, as it is far more cumbersome to deal with foot placement in that tool, hence a large part of why I use iClone in the first place.
I'm grateful for any help of feedback I can get, thanks in advance.
- Todd
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By vtoddw - 4 Years Ago
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I've narrowed the issue down to apparently only occurring when I export animations as FBX from 3DXchange. If I export directly from IClone7 the animation is fine.
This was exported directly from iClone, as you can see here the feet are both touching the floor consistently:
the good news is that I have a workaround, however, I prefer to send my finished clips from iClone to 3DXchange to be exported because it allows me to export the FBX without the mesh and textures, so it minimizes the import time in Unity, not to mention the Reach_Dummy sphere's as can be seen above. I realize those don't show up when I retarget the animation to a character in game, but it's just not as clean as exporting from 3DXchange.
Also, it's worth noting that I've tried exporting the same clip with other characters in 3DXChange, including the default character, but it makes no difference, the issue still occurs.
So what I'd like to know is, what are the chances Reallusion will fix this issue in 3DXChange? I'd be happy to upload the animation clip if they are interested in reproducing the problem, I imagine it would be a fairly easy repro.
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By vtoddw - 4 Years Ago
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I've posted a bug report for this issue:
https://www.reallusion.com/FeedBackTracker/Issue/Exported-FBX-foot-placement-does-not-match-how-it-looks-in-iClone7-and-3DXchange7
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By Peter (RL) - 4 Years Ago
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vtoddw (3/10/2021)
So what I'd like to know is, what are the chances Reallusion will fix this issue in 3DXChange? I'd be happy to upload the animation clip if they are interested in reproducing the problem, I imagine it would be a fairly easy repro.
If you have reported the issue in the Feedback Tracker it will be looked into and if an issue is found it will be scheduled for a fix.
You should get a status update in the FT in the coming days so please check back there periodically.
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By vtoddw - 4 Years Ago
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Thanks for the response, much appreciated.
On a side note, when I wrote up the bug report I came to realize that I do not actually have a workaround when exporting the animation directly from iClone, as the same issue still occurs. The confusion was due to the fact that when exported from iClone, the animation appears correctly as long as the RIG is imported as Generic in Unity, but once I change it to Humanoid the back right foot starts lifting again.
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