Implementing checks for a continuous gesture

[LookB4ULeap]

Hi all, first time poster. The project I am working on has several hand gestures that are being recognized as commands, and one such command I am trying to implement is a "speed up" motion, like in the gif below:

The Gesture object looks like it would have helped, but that has since been deprecated. So, how would I go about the checking criteria for this? My first guess it to see if the hand is rotating clockwise around the Y-axis in 3D space. I can get the rotation matrix for that. However, it would only really work for one rotation. In C#, I would need to check it continuously and adjust a GameObject's speed accordingly. Has anyone tried something similar?

EDIT: I would actually want to check along the Z-axis, I have been using Leap Motion in VR-mode, like so:

[HOTTHANDS]

I am a little confused by your question, but here are some thoughts...
LEAP Motion will track your hands and render them at some pretty fast speeds automatically.

• What are you trying to "speed up"
  If you are moving an object other than the hands... attach the object to the moving hand.
  If you are using hand tracking to control something like an animation framerate... this is different than controlling ordinary object.
• Probably need to be looking at a CLASS not an OBJECT and you need to define what you want the sensor to track.
• Does it matter where your fingers and thumb are oriented?
• Are you following simply the palm/hand location moving in a circle and the axis of that rotation?
• Continuous' -- do you mean 'while' the hand is rotating... do this action -- implying to stop doing it when the hand stops circling?
  Remember that
• Yaxis on LEAP follows a RIghtHanded Cartesian Coordinate System...
• C# in Unity3D isn't exactly the same as C# for Microsoft...

Good Luck

[LookB4ULeap]

Thank your for the well-thought-out reply, HOTHANDS, I'll address all those points in order:

• I am trying to speed up the animation framerate
• Okay
• It does not matter where the fingers and thumb are oriented
• Yes, that is what I aim to do
• Yes, do action while hand is rotating, stop when hand stops
• Thanks
• Yes, I am aware of that

So, Leap Motion does track just about every hand motion you do. But I want the motion to be recognized by the game as a command, which will trigger an outcome. I am trying to brainstorm the criteria for checking that action. Does that make a little more sense?

[HOTTHANDS]

Thanks for clarifying.

You can always use the deprecated build that has gestures... but if you want to move forward you will need to be the developer now and you may have to learn some 3D math... and be very careful about your cartesian axes...

Here is some new Unity Asset Store material to contemplate.

https://assetstore.unity.com/packages/tools/input-management/the-essential-leap-motion-gesture-detection-111791

The Essential Leap-Motion Gesture Detection

In terms of coding hints... your trigger may be the one rotation you mention and your WHILE happens until rotation is NOT detected...

Good luck

[LookB4ULeap]

Thanks! I probably won't have to learn too much more 3D Math, I did a lot of graphics work in DirectX this past year.

[jbhtcher]

Hi there!

I'm not sure if you're still trying to implement this, but I'd like to help

What SDK are you using? Also, what programming language?

[LookB4ULeap]

I am using C# and the Orion SDK.

I took a break from that feature to finish other bits but I think there is a way to record leap motion gestures manually. One of the other devs is looking into being able to record a motion so that it is defined by a trail, essentially a series of coordinates. If we can figure that out then theoretically any custom gesture could be implemented.