# Leap Motion

## Introduction

The **Leap Motion** **Nodes** are **Event Listener** **Nodes** that allow a **Logic Branch** triggered by the user on their *Leap Motion* device to execute.

## Properties

The **Leap Motion Nodes** output a list of properties. Several properties exist in the context of two different spaces. These are:

* *World space* - The **Incari** application space, i.e. this value can be used to check against the position of **Objects** placed in the **Project**.
* *Local space* - The coordinate space local to the *Ultraleap* device.

The properties are given in **Dictionary** format. A **Dictionary** holds *key*/*value* pairs. The *keys* are:

* `palmPosition` - **Vector3** - The position of the hand's palm in *world space*.
* `indexTipPosition` - **Vector3** - The position of the index finger's tip in *world space*.
* `palmVelocity` - **Vector3** - The direction of the hand's movement in *local space*.
* `palmDirection` - **Vector3** - The direction in which the hand faces in *local space*.
* `isLeft` - **Boolean** - This indicates whether the event was generated by the left or right hand.
* `pinchStrength` - **Float** - This indicates from 0.0 - 1.0 how strong the user is pinching their thumb together with some other finger.
* `pinchDistance` - **Float** - This indicates from 0.0 - 1.0 how far their thumb and some other finger are from one another.
* `grabStrength` - **Float** - This indicates from 0.0 - 1.0 the strength with which the user grabs with their hand.

These provide the necessary information for the user to incorporate *Leap Motion* into their **Project**.

## Contents

* [**On Leap Motion Frame Update**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leap-motion-frame-update)
* [**On Leap Motion Grab End**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leapmotion-grab-end)
* [**On Leap Motion Grab Start**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leapmotion-grab-start)
* [**On Leap Motion Grab Update**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leapmotion-grab-update)
* [**On Leap Motion Pinch End**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leapmotion-pinch-end)
* [**On Leap Motion Pinch Start**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leapmotion-pinch-start)
* [**On Leap Motion Pinch Update**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leapmotion-pinch-update)
* [**On Leap Motion Swipe Left**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leapmotion-swipe-left)
* [**On Leap Motion Swipe Right**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/on-leapmotion-swipe-right)
* [**XR Position**](https://docs.incari.com/incari-studio/2023.1/toolbox/events/leapmotion/xr-position)