How to use Navigation gesture via INavigationHandler, HoloToolkit ?

Trying to use https://github.com/Microsoft/HoloToolkit-Unity

got Gazing working by using the IFocusable, Having problem with implementing INavigationHandler

basically trying to achieve Navigation gesture, like: https://developer.microsoft.com/en-us/windows/holographic/holograms_211, but using the holoToolkit instead.

How do I access, NavigationPosition.x in GesturesInput ?

using UnityEngine;
using HoloToolkit.Unity.InputModule;

public class GestureAction : MonoBehaviour, INavigationHandler
{

public float RotationSensitivity = 10.0f;
private Vector3 manipulationPreviousPosition;
private float rotationFactor;
// Use this for initialization
void Start()
{

}

// Update is called once per frame
void Update()
{

}

private void PerformRotation()
{
// Trying to access NagivgationPosition.x but error !
rotationFactor = GesturesInput.Instance.NavigationPosition.x* RotationSensitivity;
transform.Rotate(new Vector3(0, -1 * rotationFactor, 0));
}

public void OnNavigationUpdated(NavigationEventData eventData)
{
PerformRotation();
}

public void OnNavigationStarted(NavigationEventData eventData)
{
Debug.Log("Hi");
}

public void OnNavigationCompleted(NavigationEventData eventData)
{
}

public void OnNavigationCanceled(NavigationEventData eventData)
{
}

}

 

got it working at the end.

public void OnNavigationUpdated(NavigationEventData eventData)
{
if (LogGesturesUpdateEvents)
{
rotationFactor = eventData.CumulativeDelta.x * RotationSensitivity;
// 2.c: transform.Rotate along the Y axis using rotationFactor.
transform.Rotate(new Vector3(0, -1 * rotationFactor, 0));
}
}

 

Hello，I‘m very new in Unity and Hololens.
A very simple and basic question: how to use this code? Do I need to create a new C# script in the inspector of my object that I want to rotate? Could you please help me with how to make the object rotate(Navigation)，move(Manipulation),and explode the part of the object(Model Expansion). I just want my object has the same effect like in the academy tutorial210,211.
Thanks a lot!

 

Yes, you need to make a new script C#, and paste the code above into it. assign the script to the gameobject, it should work.

 

Can i test this directly inside the unity playmode or do i have to build it to the device?
Thx, Peter

 

@cgmagic , thanks for that solution. you made everything easier for me now


Pranav

 

Should work in the Editor as well without simulation nor emulation

 

Hi cgmagic, firstly thanks for posting your solution.

I'm attempting to create the most basic emulation of what you did. I've a blank project. Added a camera and configured it to work with the HoloLens. I then added a cube (object I'm testing rotation on), and a cursor (to detect when my hand is actually on the object). I then went to Window -> Holographic Emulation and set the Emulation Mode to "Simulate in Editor".

Utilizing my cursor I can detect when I'm on the cube, however I can't seem to click&hold and move left/right to rotate the object.

Hopefully I'm being descriptive enough about what I'm trying to do! Anyone, please any help is greatly appreciated.
Fyi, I'm not sure if I'm just missing a script, or if there is something fundamentally not working.

Oh, lastly, I'm using your version of GestureAction.cs. I don't have any other scripts, aside from my cursor script.

EDIT: Forgot to mention as well that I had to comment out the control structure, if(LogGesturesUpdateEvents) as this doesn't exist for me.

EDIT2: I noticed this is from the InputTest.cs script. I added that as well as GesturesInput.cs - still nothing..

EDIT3: Still needing to comment out the LogGestures as it doesn't recognize it.

Any possible way you could create a minimal project with only the needed scripts, a camera, an object to rotate, and an empty gameobject for any manager scripts (if needed) so that I can get a grasp on what I'm doing, it'd be absolutely amazing. If that's asking too much, which I completely understand, please would you provide any other scripts you necessary to get the rotation operational? Thanks!

 

Anyone else know the necessary scripts to get cgmagic's solution working?

 

H̶o̶w̶ ̶i̶s̶ ̶a̶ ̶r̶e̶f̶e̶r̶e̶n̶c̶e̶ ̶t̶o̶ ̶t̶h̶e̶ ̶r̶e̶p̶o̶ ̶t̶h̶e̶ ̶b̶e̶s̶t̶ ̶p̶o̶s̶s̶i̶b̶l̶e̶ ̶p̶l̶a̶c̶e̶ ̶t̶o̶ ̶l̶o̶o̶k̶ ̶h̶a̶h̶a̶

I'll see myself to the door

 

Haha the striketrough was meant to imply I bit my own tongue. Didn't see that it had an issues section to post on. Hopefully they are okay with questions not just bug issues

 

Ok, got it working! Unfortunately the Tap and Hold gesture to enable the Navigation Handler only works for me in the Hololens. Anyone know how to get this working in the Editor??

 

It does not

 

I'm sorry, maybe I misspoke before - I'm trying to get the navigation gesture to work in the Unity Editor. I'm using a mouse and a keyboard.

 

Hmmm. Interacting as in just navigation gestures? I can simulate air taps with left/right hand using the holo tool kit

 

hey, do you already know how to Navigate in Unity Editor ? (what keys to be pressed on the keyboard/mouse)
I need it and want to know that anyway..

Thanks

 

This was sometime ago, I can't say for sure. I can however provide my Navigation code. You'll need the HoloToolkit imported into your project and this script attached to the object (or parent) of the object you want to enact tap and hold gestures on.

Code (CSharp):

1. using UnityEngine;
2. using HoloToolkit.Unity.InputModule;
3.  
4. public class NavigationTest : MonoBehaviour, INavigationHandler
5. {
6.     [Tooltip("Rotation max speed controls amount of rotation.")]
7.     public float RotationSensitivity = 2.0f;
8.  
9.     private float rotationFactorX, rotationFactorY;
10.  
11.     public void OnNavigationStarted(NavigationEventData eventData)
12.     {
13.         Debug.Log("Navigation is started");
14.  
15.         // On Navigation started, clear the stack and push the object being 'Navigated' onto the stack
16.         InputManager.Instance.ClearModalInputStack();
17.  
18.         InputManager.Instance.PushModalInputHandler(gameObject);
19.     }
20.     public void OnNavigationUpdated(NavigationEventData eventData)
21.     {
22.         rotationFactorX = eventData.CumulativeDelta.x * RotationSensitivity;
23.  
24.         rotationFactorY = eventData.CumulativeDelta.y * RotationSensitivity;
25.  
26.         //  Rotate by using the tap and hold gesture
27.         //  Control structure to allow movement along only one axis at a time
28.         if (System.Math.Abs(eventData.CumulativeDelta.x) > System.Math.Abs(eventData.CumulativeDelta.y))
29.         {
30.             /*  Moving your hand left or right along a horizontal plane
31.                 to manipulate transform.Rotate along the Y axis */
32.             transform.Rotate(new Vector3(0, -1 * rotationFactorX, 0));
33.         }
34.         else
35.         {
36.             /*  Moving your hand up or down along a vertical plane
37.                 to manipulate transform.Rotate along the Z axis */
38.             transform.Rotate(new Vector3(-1 * rotationFactorY, 0, 0));
39.             //  If this control structure doesnt work, try setting the other value to zero instead
40.         }
41.  
42.         Debug.Log("event X: " + eventData.CumulativeDelta.x);
43.         Debug.Log("event Y: " + eventData.CumulativeDelta.y);
44.     }
45.     public void OnNavigationCompleted(NavigationEventData eventData)
46.     {
47.         Debug.Log("Navigation is completed");
48.  
49.         //  On Navigation completed or canceled, pop the object off the stack.
50.         InputManager.Instance.PopModalInputHandler();
51.  
52.         /*  If the users gaze comes off the object, the rotation stops immediately
53.             until the users gaze returns to the object. Utilizing the stack,
54.             we can prevent this behavior and allow the rotation to continue even
55.             when the users gaze comes off the object    */
56.     }
57.     public void OnNavigationCanceled(NavigationEventData eventData)
58.     {
59.         Debug.Log("Navigation is canceled");
60.     }
61. }