Error converting TrackableType

I keep getting the following error around TrackableType in my demo script:

ARTapToPlaceObject.cs(46,46): error CS1503: Argument 3: cannot convert from 'UnityEngine.Experimental.XR.TrackableType' to 'UnityEngine.XR.ARSubsystems.TrackableType'


Anyone know the solution?

Script:


using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.XR.ARFoundation;
using UnityEngine.Experimental.XR;
using System;

public class ARTapToPlaceObject : MonoBehaviour
{
public GameObject placementIndicator;

private ARRaycastManager arOrigin;
private Pose placementPose;
private bool placementPoseIsValid = false;

void Start()
{
arOrigin = FindObjectOfType<ARRaycastManager>();
}

void Update()
{
UpdatePlacementPose();
UpdatePlacementIndicator();
}

private void UpdatePlacementIndicator()
{
if (placementPoseIsValid)
{
placementIndicator.SetActive(true);
placementIndicator.transform.SetPositionAndRotation(placementPose.position, placementPose.rotation);
}
else
{
placementIndicator.SetActive(false);
}
}

private void UpdatePlacementPose()
{
var screenCenter = Camera.current.ViewportToScreenPoint(new Vector3(0.5f, 0.5f));
var hits = new List<ARRaycastHit>();
arOrigin.Raycast(screenCenter, hits, TrackableType.Planes);

placementPoseIsValid = hits.Count > 0;
if (placementPoseIsValid)
{
placementPose = hits[0].pose;
}
}
}

 

For anyone who has the same problem, the issue is related to version compatibility.. The handy youtube example I was following to write the above script was created using the following versions:

AR Foundation [1.0.0-preview.22] - 2018-12-13
ARCore XR Plugin [1.0.0-preview.24] - 2018-12-13
ARKit XR Plugin [1.0.0-preview.20] - 2018-12-13
Unity 2018.3.14f1
Xcode 10.2.1 (10E1001)
macOS 10.14.6 (18G29g)

As per this post: https://github.com/TheUnityWorkbench/tuw-arfoundation-demo/issues/2

I was able to get the code working by reverting back to the above Unity + package versions. You can download the older Unity version through Unity Hub, and the packages can be found here if you can't access them through package manager (https://unitypack.herokuapp.com/).


Unfortunately there don't seem to be any equivalent tutorials/guides at the moment for the latest 2.0+ versions. There is a migration guide (https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@2.2/manual/migration-guide.html) but I couldn't figure it out.

 

Hey,

just use another import:

using UnityEngine.XR.ARSubsystems;

instead of

using UnityEngine.Experimental.XR;

Then it should work =)



Here is my whole code that works:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.XR.ARFoundation;
using UnityEngine.XR.ARSubsystems;

public class ARTapToPlaceObject : MonoBehaviour
{
public GameObject placementIndicator;

private ARRaycastManager arRaycastManager;
private Pose placementPose;
private bool placementPoseIsValid = false;

// Start is called before the first frame update
void Start()
{
arRaycastManager = FindObjectOfType<ARRaycastManager>();
}

// Update is called once per frame
void Update()
{
UpdatePlacementPose();
UpdatePlacementIndicator();
}

private void UpdatePlacementPose()
{
var screenCenter = Camera.current.ViewportToScreenPoint(new Vector3(0.5f,0.5f));
var hits = new List<ARRaycastHit>();
arRaycastManager.Raycast(screenCenter, hits, TrackableType.Planes);

placementPoseIsValid = hits.Count > 0;
if(placementPoseIsValid)
{
placementPose = hits[0].pose;
}
}

private void UpdatePlacementIndicator()
{
if(placementPoseIsValid)
{
placementIndicator.SetActive(true);
placementIndicator.transform.SetPositionAndRotation(placementPose.position, placementPose.rotation);
}
else
{
placementIndicator.SetActive(false);
}
}
}

 

My camera is not detecting the plane and not showing the yellow arrow to start with. Using samsung galaxy s9+

 

Thanks. The Error has been gone.

 

Thank you. Finished Error

 

The name 'TrackableType' does not exist in the current context

 

You saved me. thank you