HoloLens Navigation Gesture http://2vr.jp/2016/05/10/unity-hololens-tips/#NavigationDrag_Gesture https://twitter.com/yuujii

HandMove.cs

// usage: http://2vr.jp/2016/05/10/unity-hololens-tips/#NavigationDrag_Gesture

using UnityEngine;
using System.Collections;
using UnityEngine.VR.WSA.Input;

public class HandMove : MonoBehaviour {
	
	public TextMesh Log;
	public TextMesh Status;
	public TextMesh GrabObj;
	
	public GameObject FocusedObject;
	public LayerMask targetLayerMask;
	private bool isGrab = false;
	
	private Vector3 initPos;
	
	void Start() {
		InteractionManager.SourceDetected += InteractionManager_SourceDetected;
		InteractionManager.SourceUpdated += InteractionManager_SourceUpdated;
		InteractionManager.SourceLost += InteractionManager_SourceLost;
		InteractionManager.SourcePressed += InteractionManager_SourcePressed;
		InteractionManager.SourceReleased += InteractionManager_SourceReleased;
	}
	
	void Update() {
		if (isGrab && FocusedObject != null) return;
		var headPosition = Camera.main.transform.position;
		var gazeDirection = Camera.main.transform.forward;
		
		RaycastHit hitInfo;
		if (Physics.Raycast(headPosition, gazeDirection, out hitInfo) &&
		    ((1<<hitInfo.collider.gameObject.layer) & targetLayerMask) != 0) {
			FocusedObject = hitInfo.collider.gameObject;
			if (GrabObj != null) GrabObj.text = FocusedObject.name;
		} else {
			FocusedObject = null;
			if (GrabObj != null) GrabObj.text = "";
		}	
	}
	
	void InteractionManager_SourceDetected(InteractionSourceState state) {
		if (Status != null) Status.text = "Detected";
		isGrab = false;
	}
	
	void InteractionManager_SourceLost(InteractionSourceState state) {
		if (Status != null) Status.text = "Lost";
		isGrab = false;
	}
	
	void InteractionManager_SourceUpdated(InteractionSourceState state) {
		if (Status != null) Status.text = "Updated";
		
		if (!isGrab || FocusedObject == null) return;
		
		Vector3 handPosition;
		if (state.source.kind == InteractionSourceKind.Hand && state.properties.location.TryGetPosition(out handPosition)) {
			if (Log != null) Log.text = handPosition.ToString();
			FocusedObject.transform.position = initPos + handPosition;
		}
	}
	
	void InteractionManager_SourcePressed(InteractionSourceState state) {
		if (Status != null) Status.text = "Pressed";
		if (FocusedObject == null) return;
		isGrab = true;
		Vector3 handPosition;
		if (state.source.kind == InteractionSourceKind.Hand && state.properties.location.TryGetPosition(out handPosition)) {
			initPos = FocusedObject.transform.position - handPosition;
		}
	}
	
	void InteractionManager_SourceReleased(InteractionSourceState state) {
		if (Status != null) Status.text = "Released";
		isGrab = false;
	}
}