[Plugin] Leap Motion - Event Driven

[getnamo]

Hi there,

Im trying to create pinch events for the leap motion controller, but I cant get it to work. Im trying to follow the tutorial by this guy: https://www.youtube.com/watch?v=fmtBQzD7ZFE&t=70s, but he is using a very different version of the plugin. For example, the 'LeapFloatingHandsCharacter' isnt there anymore. I tried downloading the older plugin for 4.19 ( he is using 4.11, but I cant find that one anymore), but the character isnt there either.
Anyone knows how to fix this?

Thanks!

Grabbing and pinching are globally available input events in the v3 plugin https://github.com/leapmotion/leapunreal#grab-and-pinch

[RobbeVlaeminck]

Thanks for the fast response! Unfortunately I cant get it to work. I made sure its possessing player 0, and I just tried some very basic stuff like pic related, but to no effect.
Another thing I am struggling with, is getting the hand location. I want to add a swipe effect, but when I try to get the location from the BSLowPolyHand blueprint, I only get the position on the first frame, and it doesnt look like its updating.

Thanks for your help!

Kind regards,

Robbe Vlaeminck

[RobbeVlaeminck]

Hi there, Fortunately I got it to work (forgot to add the Leap Component), and everything is working great. However, every 15 minutes or so, I get this error:

LoginId:a040fe774e4aa67b209d809985d7270a
EpicAccountId:7cf0d61578c24b00a50570c5afe56822

Assertion failed: !Pose[ParentIndex].ContainsNaN() [File:d:\build\++ue4\sync\engine\source\runtime\engine\public\BonePose.h] [Line: 591]

UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_BodyState
UE4Editor_BodyState
UE4Editor_BodyState
UE4Editor_BodyState
UE4Editor_AnimGraphRuntime
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
kernel32
ntdll

I asume its related to the Leapmotion controller?
Any clues on how to fix it?
Thanks!

[getnamo]

Hi there, Fortunately I got it to work (forgot to add the Leap Component), and everything is working great. However, every 15 minutes or so, I get this error:

LoginId:a040fe774e4aa67b209d809985d7270a
EpicAccountId:7cf0d61578c24b00a50570c5afe56822

Assertion failed: !Pose[ParentIndex].ContainsNaN() [File:d:\build\++ue4\sync\engine\source\runtime\engine\public\BonePose.h] [Line: 591]

UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_BodyState
UE4Editor_BodyState
UE4Editor_BodyState
UE4Editor_BodyState
UE4Editor_AnimGraphRuntime
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
kernel32
ntdll

I asume its related to the Leapmotion controller?
Any clues on how to fix it?
Thanks!

I'm not directly involved with the plugin anymore, for anything that isn't covered in the documentation I recommend reaching out on https://forums.leapmotion.com/.

[k1lly]

Carlosan and others, have you managed to implement the mirroring mode? If yes, please, share the solution.

[alexgossalexgoss]

I've read through this forum thread pretty extensively but I am still struggling to get my own meshes to behave properly in the animation blueprint. I got some motion in the preview, but when added to the scene and run, there is no motion from my skeletal mesh, I've tested this against the default hand.







I have a theory that the custom mesh looks so wonky due to something with the skeleton or weights not matching the default hand's skeleton.
But I am really unsure why the hand doesn't move while running the scene.
Any help would be appreciated. The documentation on this device for Unreal is quite sparse.

Thanks

[getnamo]

I've read through this forum thread pretty extensively but I am still struggling to get my own meshes to behave properly in the animation blueprint. I got some motion in the preview, but when added to the scene and run, there is no motion from my skeletal mesh, I've tested this against the default hand.







I have a theory that the custom mesh looks so wonky due to something with the skeleton or weights not matching the default hand's skeleton.
But I am really unsure why the hand doesn't move while running the scene.
Any help would be appreciated. The documentation on this device for Unreal is quite sparse.

Thanks

See https://github.com/leapmotion/leapunreal#custom-rigging

and examples found here:

https://github.com/leapmotion/leapunrealmodules#rigging

[alexgossalexgoss]

Thanks for your response getnamo,

I have been closely referring to these guides but they are incomplete and lead to incomplete results.
This does not explain why I am getting jittery animations and why the tracking animation isn't occurring in the actual game.

Best,
Alex

[alexgossalexgoss]

Has anyone had any luck getting the plugin to run in 4.24? I have been working on a project with a team and after our work we cannot get Leap to run inside.

[Carlosan]

Carlosan and others, have you managed to implement the mirroring mode? If yes, please, share the solution.

sadly no, sorry