jonasmolgaard / ubiksolver Goto Github PK

I have a SkeletalMesh from the POLYGON Samurai package, which does not use the default UE4 mannequin skeleton. Is it possible to make it work with retargeting or something else?

every time i try to compile the plugin from source for ue 5.0.3 it says that "GetSkinnedAsset: is not a member of USkeletalMeshComponent"

i see this being referenced in #8 and #18 but it doesn't seem to be fixed for me. i jsut downloaded the plugin from the master branch today.

How do I disable the moving of the hands with the camera, it causing offsets between my controllers and in game hands.
Thanks!

So we can follow the YouTube tutorial without having to separate the meshes ourselves.

Thanks!

While determining if the shoulder should be rotated back towards the hand, 0.08 is the distanceRatioThreshold. To create an area about 0 which has no rotation, within the range [-0.08, 0.5] it should be adding 0.08 not subtracting (since ForwardDistanceRatio is negative here).

(As an aside, VRIK actually had its own bug in this section but because the default back shoulder limit was 0, it didn't matter.)

The UPlugin file doesn't seem to work with the latest unreal engine version (5.3.0), and won't build properly due to some minor errors. (might just be me though, and I fixed the issue with a slightly modified UPlugin file)

*edit fixed some grammar for readability

Modified file (just in text format you can modify yourself if needed, but this fixed it for me)

{
"FileVersion": 3,
"Version": 1,
"VersionName": "1.1",
"FriendlyName": "UBIKSolver",
"Description": "UpperBody IK Solver",
"Category": "Animation",
"CreatedBy": "Sticky Snout Studio (Jonas Molgaard)",
"CreatedByURL": "https://stickysnoutstudio.com/",
"DocsURL": "",
"MarketplaceURL": "",
"SupportURL": "",
"CanContainContent": false,
"IsBetaVersion": false,
"Installed": false,
"SupportedTargetPlatforms": [
"Win64",
"Android"
],
"Modules": [
{
"Name": "UBIKRuntime",
"Type": "Runtime",
"LoadingPhase": "Default"
},
{
"Name": "UBIKEditor",
"Type": "UncookedOnly",
"LoadingPhase": "Default"
}
]
}

I am relatively new to making games in unreal, so when I encountered this error on UR 5 I thought it was just because its a preview thing and tried it on UR 4.27.2 same thing and I have no clue how to fix this

after pressing yes

This is an issue I encountered while trying to get a build working on quest 2 (android). It did not include the animation blueprint which contained the UBIK node.
By adding

"SupportedTargetPlatforms": [
		"Win64",
		"Android"
	]

to the UBIKSolver.uplugin I got it included in the build for Windows (HTC-Vive) and Android (Oculus Quest 2) on UE 5.1.1.

Hi, I know this plugin is made for UE4 but its been working great on UE5 until Preview 1. This is the error I get.

Procedure entry point ?OneVector@FVector@@2U1@B could not be located in the dynamic link library.

Could you please add a license (hopefully MIT) to the repo? :)

This could be (and realistically, probably is) a problem with the program I used to export a mixamo rig to an unreal engine mannequin. Anyways, the rig in game and in the animation blueprint is sideways, and I don't know how to fix it.

First, slashes need to be fixed in AnimGraphNode_UBIKSolver.cpp to be cross-platform and not Windows-only. e.g.,
#include "../Public/AnimGraphNode_UBIKSolver.h"

Environment: MacOS Monterey 12.6 (21G115)
Hardware: MacBook Pro 2.9 Ghz intel Core i9
Compiler: Xcode 14.0.1
Unreal Engine 4.27.2

Second, running in to this linker error I can't solve:

[Adaptive unity build] Excluded from UBIKEditor unity file: AnimGraphNode_UBIKSolver.cpp
Performing 4 actions (12 in parallel)
[1/4] Compile Module.UBIKEditor.cpp
[2/4] Compile AnimGraphNode_UBIKSolver.cpp
[3/4] Link UE4Editor-UBIKEditor.dylib
Undefined symbols for architecture x86_64:
  "vtable for FAnimNode_SkeletalControlBase", referenced from:
      UAnimGraphNode_UBIKSolver::~UAnimGraphNode_UBIKSolver() in AnimGraphNode_UBIKSolver.cpp.o
      UAnimGraphNode_UBIKSolver::~UAnimGraphNode_UBIKSolver() in AnimGraphNode_UBIKSolver.cpp.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
ld: symbol(s) not found for architecture x86_64
0>clang: Error  : linker command failed with exit code 1 (use -v to see invocation)
Build failed at 10:18:24 AM

In the first set of code, UpperArmsDistance appears to be the distance from the shoulder center to the distinct shoulder:

But in the distinct shoulder rotation solver, there is a divide by two on the UpperArmsDistance. Indicating in this spot that it is meant to indicate the distance between the distinct shoulders, not the distance from shoulder center to distinct shoulder:

This is likely throwing off your shoulder rotation solve. To fix this, either the ArmLength should be calculated as:
Settings.ArmLength = (Calibration.Height - Calibration.UpperArmsDistance) / 2.0f;

OR the divide by two should be removed:
const FVector InitialUpperArmTranslation = FVector::RightVector * Settings.UpperArmsDistance * Sign;

I tried setting this up using a default VR Template in UE 5.3, and everything works. The only issue that I'm having is that the UBIK mannequin hands are offset from the VR Template hands. None of the hand positions align with the VR Template hands, such as Left Grip, Left Aim, or just Left. Trying to make adjustments to the UBIK settings defaults for Local Hand Offset & Local Hand Rotation Offset is a nightmare. I just want to be able to get these hands to align with the VR Template provided hands so that grabbing works correctly.