Nov
4
2015

Leap Motion: Get Finger Position & Direction

An article by mgear

leap_motion_unity_get_finger_position_direction_scene_1

Took a while to find info on how to simply get the Leap hand finger positions in unity,
here’s cleaned up script to draw rays from fingertips to their pointing direction.

	/******************************************************************************\
	* Copyright (C) Leap Motion, Inc. 2011-2014. *
	* Leap Motion proprietary. Licensed under Apache 2.0 *
	* Available at http://www.apache.org/licenses/LICENSE-2.0.html *
	\******************************************************************************/
	// Original script: "MagneticPinch.cs" modified by unitycoder.com to just get the finger position & directions

	using UnityEngine;
	using System.Collections;
	using Leap;

	public class GetLeapFingers : MonoBehaviour
	{
	HandModel hand_model;
	Hand leap_hand;

	void Start()
	{
	hand_model = GetComponent<HandModel>();
	leap_hand = hand_model.GetLeapHand();
	if (leap_hand == null) Debug.LogError("No leap_hand founded");
	}

	void Update()
	{
	for (int i = 0; i < HandModel.NUM_FINGERS;i++)
	{
	FingerModel finger = hand_model.fingers[i];
	// draw ray from finger tips (enable Gizmos in Game window to see)
	Debug.DrawRay(finger.GetTipPosition(), finger.GetRay().direction, Color.red);
	}
	}
	}