[SOLVED]How to do Raycasting with Leap Motion?

Questions & Answers
1

I am currently try to cast the ray from the Leap Motion hand to control player’s movement, and then I found this codelink text

but when I paste in my project, it keeps give me NullReferenceException

“NullReferenceException: Object reference not set to an instance of an object
HandRaycast.Start () (at Assets/Script/HandRaycast.cs:25)”

Here is the code

using Leap;
using Leap.Unity;
using System.Collections.Generic;
using UnityEngine;

public class HandRaycast : MonoBehaviour {

    Hand leapHand;
    FingerModel finger;
    HandModel handModel;

    // Use this for initialization
    void Start()
    {
        /*Controller controller = new Controller();
        Frame frame = controller.Frame(); // controller is a Controller object
        if (frame.Hands.Count > 0)
        {
            List<Hand> hands = frame.Hands;
            leapHand = hands[0];
        }
        finger = leapHand.Fingers;
        Finger.FingerType fingerType = finger.Type;*/
        handModel = GetComponent<HandModel>();
        leapHand = handModel.GetLeapHand();
        if (leapHand == null) Debug.LogError("No leap_hand founded");
    }
	
	// Update is called once per frame
	void Update () {
        Vector3 fwd = transform.TransformDirection(Vector3.forward);
        RaycastHit hit;
        for (int i = 0; i < HandModel.NUM_FINGERS; i++)
        {
            finger = handModel.fingers*;*

if (Physics.Raycast(finger.GetTipPosition(), fwd, out hit))
{
float distanceToGround = hit.distance;
Debug.Log(“hit something” + distanceToGround);
}
Debug.DrawRay(finger.GetTipPosition(), finger.GetRay().direction, Color.red, Time.deltaTime, true);
}
}
}

Do any one know the solution?
Moreover, do anyone know how to scale OSVR VRFirstPersonController without canvas position affected? Everytime I adjust VRFirstPersonController scale, I do not know why the canvas on VREye1 always disappear.

2

This issue already solved. I do not know why it does not work at first.

“Just attach the script to the Handmodel”

But even I turn on Gizmos I still not see the ray…