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Kazuhiro Hara™
Kazuhiro Hara™

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HandTracking - MR Tutorial for Nreal light

Image of the completed version

Simple HandTracking tutorial. Use hand tracking to pinch to increase the count!

Sample Repository

Run the sample

  1. Clone Sample Repository, Change current directory to HandTracking . And Open with Unity.
  2. (If you don't have NRSDK) Download NRSDK 1.8.0 from Download | Nreal
  3. Open Build Setting, change Platform to Android
  4. Open Project, select Assets > import package > Custom Package and import NRSDKForUnityAndroid_1.8.0.unitypackage.
  5. Check Build Settings > Player Settings by referring to Configure Build Settings
  6. Press Build form Build Settings panel
  7. Install *.apk on Android or DevKit.

Tutorial

1. Setting up the project for Nreal development

  1. See Quickstart for Android - NRSDK Documentation and configure the build settings.
  2. (If you don't have NRSDK) Download NRSDK 1.8.0 from Download | Nreal
  3. Open Project, select Assets > import package > Custom Package and import NRSDKForUnityAndroid_1.8.0.unitypackage.

2. Setting for HandTracking to NRInput

  1. Select NRInput , and change Input Source Type to Hands
  2. Put NRHand_R from Assets > NRSDK > Prefabs > Hands to NRInput > Right
  3. Put NRHand_L from Assets > NRSDK > Prefabs > Hands to NRInput > Left

3. Create Material

  1. Open Project, select Assets
  2. Create Material on Assets
    1. Change name to “TouchCubeMaterial”
    2. Change Albedo to “CC0000”

4. Put Cube in the Scene

  1. Put Cube in the Scene
    1. Change name to “TouchCube”
    2. Pos X : 0, Pos Y : 0, Pos Z : 8

5. Put a Canvas in the scene

  1. Put Canvas from Create > UI
  2. Set property on Inspector panel
    1. Render Mode : World Space
    2. Pos X : 0 , Pos Y : -0.35 Pos Z : 3
    3. Scale
      1. X : 0.005 , Y : 0.005 , Z : 0.005

6. Put Text in Canvas

  1. Put Text as a child of Canvas with the name "Counter”.
    1. Pos X : 0, Pos Y : -30, Pos Z : 3
    2. Change Text to “0”
    3. Change Color to “FFCC00”
    4. Change Font size to 30

7. Create C# Script in Assets

  1. Create C# Script in the asset with the file name "HandTrack.cs".
  2. Write the code as follows
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class HandTrack : MonoBehaviour, IPointerClickHandler
{
    /// <summary>
    /// Counter Text GameObject
    /// </summary>
    public Text targetText;

    /// <summary>
    /// Counter value
    /// </summary>
    private int counter = 0;

    /// <summary>
    /// HandTracking Click Handler
    /// </summary>
    /// <param name="eventData"></param>
    public void OnPointerClick(PointerEventData eventData)
    {
        counter++;
        targetText.text = counter.ToString();
        //throw new System.NotImplementedException();
    }

    // Start is called before the first frame update
    void Start()
    {

    }

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

    }
}
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8. Attach the C# script on “TouchCube”

  1. Attach "HandTrack.cs" to “TouchCube”
    1. Set Target Text on Inspector panel to Counter on the scene.

9. Build

  1. Press Build form Build Settings panel
  2. Install *.apk on Android or DevKit.

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