Migration notes for the Wikitude Unity Plugin
Migrate to 9.10.1
The minimum Unity version was increased to 2020.3.17f1 LTS.
Migrate to 9.9
- The minimum Android SDK Version was raised to Android 6.0 (API level 23). Please update
minSdkVersionto 23 in the manifest of your app or
build.gradlefile if you export to a gradle project.
Migrate to 9.8
The minimum Unity version was increased to 2020.3.2f1 LTS. If custom gradle files were used to ensure Anroid 11 support for Unity 2019.4, they should be removed from the project for 2020.3.
Migrate to 9.4
The minimum Unity version was increased to 2019.4.10f1 LTS. If Android 11 (API Level 30) support is required, additional settings are required for this Unity version. Please refer to the Google documentation therefore.
Migrate to 9.3
- The minimum Android SDK Version was raised to Android 5.1 (API level 22). Please update
minSdkVersionto 22 in the manifest of your app or
build.gradlefile if you export to a gradle project.
- A 'BackgroundCamera' child object was added to the 'WikitudeCamera'. If there is no such child object set by choice, a background camera will be instantiated during runtime and will not be hidden like before.
Migrate from 8.9.1 to 8.10
The minimum Android SDK Version was raised to Android 5.0 (API level 21). Please update
minSdkVersion to 21 in the manifest of your app or
build.gradle file if you export to a gradle project.
Migrate from 8.7.0 to 8.9.0
The minimum Unity version was increased to 2018.4 LTS for better compatibility with Xcode 11. This migration mostly affects the samples, so if compatibility with older Unity versions is still something you require, please contact support and we'll guide you through the upgrade process.
Migrate from 8.3.0 to 8.4.0
The minimum Unity version was increased to 2017.4 LTS. Android binaries contain libraries for the ARM64 architecture by default. Please make sure that your version of Unity has support for ARM64 and make sure it's enabled in PlayerSettings. Android binaries no longer contain libraries for the x86 architecture. Please make sure to disable it in PlayerSettings.
Migrate from 8.2.0 to 8.3.0
The Unity plugin will start enforcing license checks when running in the Unity editor. Please make sure that the
WikitudeCamera component has a proper license, the bundle identifier / package name is properly set in
Player Settings and that the current platform is either iOS, Android or UWP. If that is not the case, tracker creation will fail and all existing samples will display an error message.
Migrate from 8.0.0 to 8.1.0
InstantTracker now has the
ConvexHullEnabled properties that are used to configure
InstantTrackable now has a new
PlaneDrawable property for rendering augmentations on planes and three new events related to
All tracker types now have the
CloudRecognitionService now has a new
GroupId property that should correspond with your Wikitude cloud recognition account.
Migrate from 7.2.0 to 8.0.0
The minimum Unity version was increased to 5.5.6.
On both iOS and Android, the framework and libraries have been renamed. Please make sure to remove the old ones before updating to the new version. If building was done automatically, please make sure the rename is taken into account.
Trackable Behaviour class was removed.
Legacy Scale option on the
InstantTracker introduced in 7.2.0 was removed.
PluginManager was removed and replaced with the
Plugin class. The
Input Plugin settings were moved from
Plugin. Please see the Plugin and Custom Camera samples and documentation for more information on how the new Plugin APIs work.
Frame class was removed. Please use the new
CameraFrame class instead.
All error callbacks had their signature changed to have a single
Wikitude.Error parameter instead of two parameters. The error code and error message were moved into the
Migrate from 7.1.0 to 7.2.0
The minimum Unity version was increased to 5.4.2.
WikitudeCamera and the internal SDK was moved from
Start. This means WikitudeCamera properties can now be easily changed from script, as long they are done before the
Start method is called on the
InstantTracker now have a new option called
Legacy Scale. In previous versions of the plugin, the augmentations needed to be scaled by a factor of 10 to match their targets. In the new version, this is no longer required. However, for backwards compatibility, the
Legacy Scale allows developers to re-enable the old behavior. Keep in mind that this option will be removed in future versions and is only intended to ease the transition of existing projects.
Migrate from 7.0.0 to 7.1.0
Migrate from 2.1.0 to 7.0.0
Version 7.0.0 increases the minimum required version for Unity to 5.4.0. Please make sure to also upgrade Unity if you are using an older version, otherwise the plugin will not work properly.
Version 7.0.0 also increases the minimum iOS version to 9.0 and the minimum Android version to Android 4.4(19). Please update
minSdkVersion to 19 in the manifest of your App or build.gradle if you export to a gradle project.
To align the Unity API with that of the Wikitude Native SDK, the general
TrackableBehaviour component has been deprecated, and was replaced with
InstantTrackable. These new trackables also have different events. So instead of the generic
OnEnterFieldOfVision from the previous version, the
ImageTrackable has an equivalent
OnImageRecognized event, with an
ImageTarget parameter, instead of just a string. Similar events are present in the other trackers.
When you update to the new API, please make sure to never mix the new
Trackables with the deprecated
TrackableBehaviour, as this is not supported.
Trackable components now have an additional
Drawable field. This was added to support multiple targets for
ImageTrackers, but the API is available for all
Trackables. Please see the Image Tracking examples for more information about multiple targets.
Additionally, some sample scripts were renamed. If you are upgrading and importing the samples as well, please check fo duplicate scripts, or for scripts that should not be present in the project anymore.
Migrate from 2.0.0 to 2.1.0
Version 2.1.0 adds a new value to the FrameColorSpace enum used for Plugins and Input Plugins. Because of this, when loading a scene that contains a WikitudeCamera component configured to use Input Plugins, the deserialized value of the enum will be incorrect. Please set it to the appropriate value for your use case after upgrading to 2.1.0.
Migrate from 1.4.0 to 2.0.0
Version 2.0.0 deprecates the
ClientTracker and the
CloudTracker classes. When before you used the
ClientTracker to recognize images, it is recommended to switch to the new
ImageTracker, in combination with a
TargetCollectionResource. Instead of the
CloudTracker, the same
ImageTracker can be used, but with a
CloudRecognitionService, instead. You can select between the
TargetCollectionResource and the
CloudRecognitionService in the
ImageTracker inspector, in the first dropdown menu. Finally, if you used the
ClientTracker to track 3D targets, you can now use the new
ObjectTracker with a
TargetCollectionResource for this.
To help migrate your project to the new APIs, the inspectors of the old classes have a button that allows you to automatically upgrade the script component with the appropriate replacement.
When you press the button, a warning message will appear, informing you that during the upgrade process, the properties set on the old tracker will be migrated to the new one, but events will not. This would not be possible, because in most cases you need to update the script functions receiving the events to the appropriate signature.
After pressing OK, GameObject will have the new component instead. If you are not happy with the result, or something went wrong, you can undo this operation.
Keep in mind that you still need to update the source code, where references to the old trackers are used.
For example, the
Runtime Tracker sample used to create a
ClientTracker with a custom remote URL.
GameObject trackerObject = new GameObject("ClientTracker");
_currentTracker = trackerObject.AddComponent<ClientTracker>();
_currentTracker.UseCustomUrl = true;
_currentTracker.TargetPath = Url.text;
Here is how the sample would look like when using the new
ImageTracker and APIs.
GameObject trackerObject = new GameObject("ImageTracker");
_currentTracker = trackerObject.AddComponent<ImageTracker>();
_currentTracker.TargetSourceType = TargetSourceType.TargetCollectionResource;
_currentTracker.TargetCollectionResource = new TargetCollectionResource();
_currentTracker.TargetCollectionResource.UseCustomURL = true;
_currentTracker.TargetCollectionResource.TargetPath = Url.text;
The old trackers are still kept for backwards compatibility, but will be removed in a future version, so please update to the new ones.
Additionally, the CloudTrackable was removed from the samples. If you are upgrading from an older version, please make sure that this script is no longer in your projects, otherwise you might encounter compilation errors.
Migrate from 1.1.0 to 1.2.0
Version 1.2.0 simplifies the
WikitudeCamera prefab. It is now a single GameObject, without the hierarchy it previously had. If you had any changes to the prefab, except for the license key, please make sure to back it up first.
Because the previous hierarchy is gone, the camera feed is no longer explicitly exposed in the editor, but you can still access it through the
CameraTexture property on the
Migrate from 1.0.1 to 1.1.0
Version 1.1.0 contains many breaking changes to the plugin, so before upgrading, please backup your project, to prevent accidentally losing your work.
Wikitude classes are now concrete and sealed and expose Unity events to communicate. This means that now you can add them directly to game objects and subscribe to their events through the editor or at runtime in code. When adding subscribers to events, make sure you use the dynamic version of your method, when there is a choice between static and dynamic (please see the Client Recognition examples for more information on how to set up Client Trackers).
Values that were set in the inspector for these classes will need to be reset because of the change in class name and their internal representation.
The classes that previously derived from them will no longer work, so they need to be updated to receive events. On your game objects, you will get missing mono classes after updating. These should be replaced with the corresponding classes in the Wikitude plugin (Wikitude/Dependencies/WikitudeUnityPlugin) and the values need to be reintroduced.
All function names in Wikitude classes now begin with a capital letter.
When building for iOS, if you choose to append over a build made with a previous version, you will end up with two versions of the Wikitude plugin in your project, one located in Plugins/iOS and the new one in Plugins/Wikitude/iOS. Please make sure that only the new one is used. Alternatively, you can redo the build from scratch using the steps from the Setup Guide section.
This section will show how to migrate the example project from version 1.0.1 to work with the new version of the plugin.
Pluginsfolders. The plugin folder has changed drastically in this version. If you don't delete these folders, the correct files should still be replaced with the new version. However, the samples will not work correctly because magazine.wtc will be in
StreamingAssetsfolder instead of
StreamingAssets/Wikitude. Since we won't be using the samples in this example, this step can be skipped.
- Delete the
Samplesfolder is for illustration purposes only and is not needed in development.
Wikitude.IClientTrackerhas been renamed to
Wikitude.ClientTrackerand is a sealed class. As such, the
ClientTrackerscript should be changed to derive from
MonoBehaviourinstead and it's methods should be simple, instead of override. These methods will be set as callbacks in the Inspector. The class name should also be changed to avoid clashes with the Wikitude class.
- Similar steps should be taken to update the
CloudTrackerscript. Additionally, since it no longer derives from
Wikitude.CloudTracker, it will need a reference to it so that it can call
- Similar steps should be taken to update the
WikitudeCamerascripts. Since Wikitude classes are concrete now, they can be assigned directly to GameObjects, so there is no need for these empty classes anymore.
- Open the scene called
- Select the
WikitudeCameraGameObject from the Hierarchy and enter your license key in the appropriate field in the Inspector. If the script is missing, add the
WikitudeCamerascript from the
- Create a new GameObject and add the script you updated at step 3 to it.
- Select the
ClientTrackerGameObject from the Hierarchy and from the
Target Collectiondropdown select
magazine.wtc. Then, for each event you want to subscribe to, press the plus sign, set the GameObject created at step 9 to the field
None (Object)and select the corresponding function callback. Please see Client Recognition examples for more information on how to work with Unity Events.
- Select the
WikitudeEyeGameObject from the Hierarchy and add the script you updated at step 5 to it.
- Select the
TrackableGameObject from the Hierarchy and in the
Target Patternfield enter * to track all targets. In the events foldout, subscribe the script you added to WikitudeEye to both
On Enter Field Of Visionand
On Exit Field Of Visionevents.
The project should now work as before.