Trouble getting input from Vive controller touchpad

Questions & Answers
1

So I’m trying to get the position that a player is pressing down on on the Vive controller but I am getting back 0s. My code is

if(ControllerDevices[activeIdx].GetPress(Valve.VR.EVRButtonId.k_EButton_SteamVR_Touchpad))
{
  Vector2 touch = ControllerDevices[activeIdx].GetAxis();
  Debug.Log(Time.time + " touch " + touch);
}

When I press down the edge of the touchpad, I get (0,0) as output, which doesn’t make any sense. Any other Vive devs have a better way of getting the position that’s being touched on the touchpad?

2

I guess you’d use have to tell it to get the axis of the touchpad

This works with SteamVR for a simple movement script…

 using UnityEngine;
 using System.Collections;
 using Valve.VR;
 
 public class myTouchpad : MonoBehaviour
 {
     public GameObject player;
 
     SteamVR_Controller.Device device;
     SteamVR_TrackedObject controller;
 
     Vector2 touchpad;
 
     private float sensitivityX = 1.5F;
     private Vector3 playerPos;
 
     void Start()
     {
         controller = gameObject.GetComponent<SteamVR_TrackedObject>();
     }
 
     // Update is called once per frame
     void Update()
     {
         device = SteamVR_Controller.Input((int)controller.index);
         //If finger is on touchpad
         if (device.GetTouch(SteamVR_Controller.ButtonMask.Touchpad))
         {
             //Read the touchpad values
             touchpad = device.GetAxis(EVRButtonId.k_EButton_SteamVR_Touchpad);
 
 
             // Handle movement via touchpad
             if (touchpad.y > 0.2f || touchpad.y < -0.2f) {
                 // Move Forward
                 player.transform.position -= player.transform.forward * Time.deltaTime * (touchpad.y * 5f);
 
                 // Adjust height to terrain height at player positin
                 playerPos = player.transform.position;
                 playerPos.y = Terrain.activeTerrain.SampleHeight (player.transform.position);
                 player.transform.position = playerPos;
             }
 
             // handle rotation via touchpad
             if (touchpad.x > 0.3f || touchpad.x < -0.3f) {
                 player.transform.Rotate (0, touchpad.x * sensitivityX, 0);
             }
 
             //Debug.Log ("Touchpad X = " + touchpad.x + " : Touchpad Y = " + touchpad.y);
         }
     }
 }

The bit you need to concentrate on is this line…

touchpad = device.GetAxis(EVRButtonId.k_EButton_SteamVR_Touchpad);