Changelog

All notable changes to this package will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[2.0.4] - 2022-10-19

Changed

Ray casts now query the local PhysicsScene instead of using static Physics routines which uses the default physics scene. Gesture classes that perform ray casts use the camera's scene, and components that perform ray casts use its scene during Awake.
Creating a new XR Origin (VR) now automatically adds an Input Action Manager component and sets the Action Assets to XRI Default Input Action.inputactions asset if available from the Starter Assets sample package.

Fixed

Fixed XR Interactor Line Visual so it deactivates the current reticle GameObject when the behavior is enabled or disabled.
Fixed XRUIInputModule to use the correct button type for middle and right mouse buttons when sending mouse button events.
Fixed issue where the last point in the curve rendered by XR Interactor Line Visual would not always be continuous with the rest of the curve (for example when sphere cast is used).
Fixed issue where XRInteractorReticleVisual script did not properly detect ray casts with UI objects. (XRIT-18)
Fixed an issue with throwing physics on Quest devices where bad frame-timing would cause unexpectedly high velocities to be applied.
Fixed issue where using the MockHMD XR Plugin package with the XRDeviceSimulator would cause the device simulator's rotation to be overwritten. This issue can also be fixed by upgrading the Input System package to 1.4.1+.
Fixed Tracked Device Graphic Raycaster to use the correct ray cast method when Check for 2D Occlusion is enabled, and changed it to use the local PhysicsScene2D.

[2.0.3] - 2022-07-26

Fixed

Fixed the simulated HMD and controllers so they no longer reset to origin after switching focus away and back to the Unity Editor. (1409417)
Fixed warnings about setting velocities of a kinematic body when updating an XR Grab Interactable with Movement Type set to Kinematic.
Fixed UIInputModule so it will use the new Main Camera if the previous one is disabled when UIInputModule.uiCamera is not set.
Fixed warning in the Inspector window for interactors missing the XR Controller component when the GameObject is deactivated by changing the find method to include inactive GameObjects.
Fixed XR Interactor Line Visual so it will instantiate the Reticle GameObject when it is a Prefab asset so it does not modify the asset on disk.
Fixed UIInputModule to support EventSystem IPointerMoveHandler for Unity 2021.1 and newer. Also added the corresponding pointerMove event to UIInputModule to allow the pointer move events to be globally handled.

[2.0.2] - 2022-04-29

Fixed

Fixed wrong offset when selecting an XRGrabInteractable with Track Rotation disabled when the Attach Transform had a different rotation than the Interactable's rotation. This configuration was not covered in the related fix made previously in version 2.0.0-pre.6. (1361271)
Fixed XR Socket Interactor hover mesh position and rotation for an XR Grab Interactable with Track Position and/or Track Rotation disabled.
Fixed the simulated controllers not working in projects where the Scripting Backend was set to IL2CPP.
Fixed the simulated HMD deviceRotation not being set. It now matches the centerEyeRotation.
Fixed the GameObject > XR > AR Annotation Interactable menu item when AR Foundation is installed to add the correct component.
Fixed UIInputModule so it uses and resets PointerEventData.useDragThreshold to allow users to ignore the drag threshold by implementing IInitializePotentialDragHandler. It was previously being ignored and causing sliders and scrollbars to incorrectly use a drag threshold.

[2.0.1] - 2022-03-04

Changed

Changed the XRI Default Input Actions asset in the Starter Assets sample by removing the primaryButton bindings from Teleport Select and Teleport Mode Activate. If you want to restore the old behavior of both bindings, add an Up\Down\Left\Right Composite, reassign the Up composite part binding, and add the Sector interaction for that direction. The actions were also reorganized into additional Action Maps.

Fixed

Fixed regression introduced with version 2.0.0 so the hover mesh draws in the correct location when the Interactable's Attach Transform is not a child Transform or deep child Transform.
Fixed the XRI Default Input Actions asset in the Starter Assets sample showing the warning "(Incompatible Value Type)" on the bindings for Teleport Select and Teleport Mode Activate by changing the action type from Button to Value with an expected control type of Vector2. The sample needs to be imported again if you already imported it into your project for you to see these changes.
Fixed missing UNITY_INCLUDE_TESTS constraint in test assembly definition.

[2.0.0] - 2022-02-16

Added

Added a warning message to the Inspector of XRGrabInteractable with non-uniformly scaled parent. A child XRGrabInteractable with non-uniformly scaled parent that is rotated relative to that parent may appear skewed when you grab it and then release it. See Limitations with Non-Uniform Scaling. (1228990)
Added support for gamepad and joystick input when using the XR UI Input Module for more complete UGUI integration.

Changed

Changed sockets so selections are only maintained when exclusive. XRSocketInteractor.CanSelect changed so that sockets only maintain their selection when it is the sole interactor selecting the interactable. Previously, this was causing interactables that support multiple selection to not get released from the socket when grabbed by another interactor, which is not typically desired.
Changed sockets so the hover mesh is positioned at the original attach transform pose for selected interactables. This fixes the case where the hover mesh would be at the wrong location when the attach transform is dynamically modified when an XR Grab Interactable is grabbed.
Changed XRDirectInteractor and XRSocketInteractor by adding an OnTriggerStay method to fix an issue where those interactors did not detect when a Collider had exited in some cases where OnTriggerExit is not invoked, such as the Collider of the interactable being disabled. Users who had already implemented OnTriggerStay in derived classes will need to call the base method.
Changed GestureTransformationUtility.Raycast default parameter value of trackableTypes from TrackableType.All to TrackableType.AllTypes to fix use of deprecated enum in AR Foundation 4.2. The new value includes TrackableType.Depth.
Renamed the Default Input Actions sample to Starter Assets.
Updated the manual to move most sections to separate pages.
Moved some components from the Component > Scripts menu into Component > XR, Component > Event, and Component > Input.
Changed com.unity.xr.core-utils dependency to 2.0.0.

Fixed

Fixed XRDirectInteractor and XRSocketInteractor still hovering an XRGrabInteractable after it was deactivated or destroyed.
Fixed properties in event args for select and hover being incorrect when the same event is invoked again during the event due to the instance being reused for both. An object pool is now used by the XRInteractionManager to avoid the second event from overwriting the instance for the first event.
GC.Alloc calls have been reduced: ray interactors with UI interaction disabled no longer allocate each frame, XR UI Input Module now avoids an allocating call, and AR gesture recognizers no longer re-allocate gestures when an old one is available.
Fixed Editor classes improperly using enumValueIndex instead of intValue in some SerializedProperty cases. In practice, this bug did not affect users since the values matched in those cases.
Fixed issue where EventManager.current.IsPointerOverGameObject would always return false when using XRUIInputModule for UI interaction. (1387567)
Fixed XR Tint Interactable Visual from clearing the tint in some cases when it was set to tint on both hover and selection. Also fixed the case when the interactable supports multiple selections so it only clears the tint when all selections end. It will now also set tint during Awake if needed.
Fixed ARTests failing with Enhanced touches due to version upgrade of Input System.
Fixed use of deprecated methods and enum values in GestureTransformationUtility when using AR Foundation 4.1 and 4.2.

[2.0.0-pre.7] - 2022-01-31

Fixed

Fixed ScriptableSettings so it no longer logs to the console when creating the settings asset.

[2.0.0-pre.6] - 2021-12-15

Fixed

Fixed wrong offset when selecting an XRGrabInteractable with Track Rotation disabled. (1361271)
Fixed XRInteractorLineVisual causing the error "Saving Prefab to immutable folder is not allowed". Also fixed the undo stack by no longer modifying the Line Renderer during Reset. (1378651)
Fixed UI interactions not clicking when simultaneously using multiple Ray Interactors. (1336124)
Fixed Raycast Padding of Graphic UI objects not being considered by TrackedDeviceGraphicRaycaster. (1333300)
Fixed OnEndDrag not being called on behaviors that implement IEndDragHandler when the mouse starts a drag, leaves the bounds of the object, and returns to the object without releasing the mouse button when using the XRUIInputModule upon finally releasing the mouse button.
Fixed runtime crashing upon tapping the screen when using AR touch gestures in Unity 2021.2 in projects where the Scripting Backend was set to IL2CPP.
Fixed MissingReferenceException caused by XRBaseInteractable when one of its Colliders was destroyed while it was hovering over a Direct Interactor or Socket Interactor.
Fixed obsolete message for XRControllerState.poseDataFlags to reference the correct replacement field name.

[2.0.0-pre.5] - 2021-11-17

Fixed

Fixed name of the profiler marker for PreprocessInteractors.

[2.0.0-pre.4] - 2021-11-17

Added

Added ability to change the MovementType of an XRGrabInteractable while it is selected. The methods SetupRigidbodyDrop and SetupRigidbodyGrab will be invoked in this case, you can check if the XRGrabInteractable it's not selected or use the methods Grab and Drop to perform operations that should only occur once during the select state.

Changed

Changed so the Interaction Layer Mask check is done in the XRInteractionManager instead of within XRBaseInteractor.CanSelect/XRBaseInteractable.IsSelectableBy and XRBaseInteractor.CanHover/XRBaseInteractable.IsHoverableBy.
Changed com.unity.inputsystem dependency from 1.0.2 to 1.2.0.
Changed com.unity.xr.core-utils dependency from 2.0.0-pre.3 to 2.0.0-pre.5.
Changed com.unity.xr.legacyinputhelpers dependency from 2.1.7 to 2.1.8.
Changed XRHelpURLConstants from public to internal.

Fixed

Updated the property names of XROrigin to adhere to PascalCase.

[2.0.0-pre.3] - 2021-11-09

Added

Added XR Interaction Toolkit Settings to the Edit > Project Settings window to allow for editing of the Interaction Layers. These settings are stored within a new Assets/XRI folder by default.
Added a Select Mode property to Interactables that controls the number of Interactors that can select it at the same time. This allows Interactables that support it to be configured to allow multiple hands to interact with it at the same time. The Multiple option can be disabled in the Inspector window by adding [CanSelectMultiple(false)] to your component script.
Added ability to double click a row in the XR Interaction Debugger window to select the Interactor or Interactable.
Added the ActionBasedController.trackingStateAction property that allows users to bind the InputTrackingState. This new action is used when updating the controller's position and rotation. When not set, it falls back to the old behavior of using the tracked device's tracking state that is driving the position or rotation action.
Added the interaction float value to the controller state. This will allow users to read the float value from InteractionState, not just the bool value, to drive visuals.
Added methods to XRBaseInteractor and XRBaseInteractable to return the pose of the Attach Transform captured during the moment of selection (GetAttachPoseOnSelect and GetLocalAttachPoseOnSelect).
Added a property to XRBaseInteractor and XRBaseInteractable to return the first interactor or interactable during the current select stack (firstInteractableSelected and firstInteractorSelecting).
Added Allow Hovered Activate option to Ray Interactor and Direct Interactor to allow sending activate and deactivate events to interactables that the interactor is hovered over but not selected when there is no current selection. Override GetActivateTargets(List<IXRActivateInteractable>) to control which interactables can be activated.
Added teleporting event to BaseTeleportationInteractable (TeleportationAnchor, TeleportationArea). Fires according to timing defined by that type's teleportTrigger.

Changed

Changed ProcessInteractor so that it is called after interaction events instead of before. Added a new PreprocessInteractor method to interactors which is called before interaction events. Scripts which used ProcessInteractor to compute valid targets should move that logic into PreprocessInteractor instead.

Changed the signature of all methods with XRBaseInteractor or XRBaseInteractable parameters to instead take one of the new interfaces for Interactors (IXRInteractor, IXRActivateInteractor, IXRHoverInteractor, IXRSelectInteractor) or Interactables (IXRInteractable, IXRActivateInteractable, IXRHoverInteractable, IXRSelectInteractable). This change allows users to completely override and develop their own implementation of Interactors and Interactables instead of being required to derive from XRBaseInteractor or XRBaseInteractable.

Old Signature	New Signature
XRBaseInteractor `void GetValidTargets(List<XRBaseInteractable> targets)`	IXRInteractor `void GetValidTargets(List<IXRInteractable> targets)`
XRBaseInteractor `bool CanHover(XRBaseInteractable interactable)`	IXRHoverInteractor `bool CanHover(IXRHoverInteractable interactable)`
XRBaseInteractor `bool CanSelect(XRBaseInteractable interactable)`	IXRSelectInteractor `bool CanSelect(IXRSelectInteractable interactable)`
XRBaseInteractable `bool IsHoverableBy(XRBaseInteractor interactor)`	IXRHoverInteractable `bool IsHoverableBy(IXRHoverInteractor interactor)`
XRBaseInteractable `bool IsSelectableBy(XRBaseInteractor interactor)`	IXRSelectInteractable `bool IsSelectableBy(IXRSelectInteractor interactor)`
BaseInteractionEventArgs `XRBaseInteractor interactor { get; set; }` `XRBaseInteractable interactable { get; set; }`	ActivateEventArgs and DeactivateEventArgs `IXRActivateInteractor interactorObject { get; set; }` `IXRActivateInteractable interactableObject { get; set; }` HoverEnterEventArgs and HoverExitEventArgs `IXRHoverInteractor interactorObject { get; set; }` `IXRHoverInteractable interactableObject { get; set; }` SelectEnterEventArgs and SelectExitEventArgs `IXRSelectInteractor interactorObject { get; set; }` `IXRSelectInteractable interactableObject { get; set; }`

// Example Interactable that overrides an interaction event method.
public class ExampleInteractable : XRBaseInteractable
{
    // Old code
    protected override void OnSelectEntering(SelectEnterEventArgs args)
    {
        base.OnSelectEntering(args);
        XRBaseInteractor interactor = args.interactor;
        // Do something with interactor
    }

    // New code
    protected override void OnSelectEntering(SelectEnterEventArgs args)
    {
        base.OnSelectEntering(args);
        var interactor = args.interactorObject;
        // Do something with interactor
    }
}

// Example Interactor that overrides GetValidTargets.
public class ExampleInteractor : XRRayInteractor
{
    // Old code
    public override void GetValidTargets(List<XRBaseInteractable> targets)
    {
        base.GetValidTargets(targets);
        // Do additional filtering or prioritizing of Interactable candidates in targets list
    }

    // New code
    public override void GetValidTargets(List<IXRInteractable> targets)
    {
        base.GetValidTargets(targets);
        // Do additional filtering or prioritizing of Interactable candidates in targets list
    }
}

Changed Interactors and Interactables so they support having multiple selections, similarly to how they could have multiple components they were either hovering over or being hovered over by.

Old Pseudocode Snippets	New Pseudocode Snippets
`XRBaseInteractor.selectTarget != null`	`IXRSelectInteractor.hasSelection`
`XRBaseInteractor.selectTarget`	`// Getting the first selected Interactable` `IXRSelectInteractor.hasSelection ? IXRSelectInteractor.interactablesSelected[0] : null` or `using System.Linq;` `IXRSelectInteractor.interactablesSelected.FirstOrDefault();`
`var targets = new List<XRBaseInteractable>();` `XRBaseInteractor.GetHoverTargets(targets);`	`IXRHoverInteractor.interactablesHovered`
`XRBaseInteractable.hoveringInteractors`	`IXRHoverInteractable.interactorsHovering`
`XRBaseInteractable.selectingInteractor`	`IXRSelectInteractable.interactorsSelecting`

// Example Interactor that overrides a predicate method.
public class ExampleInteractor : XRBaseInteractor
{
    // Old code
    public override bool CanSelect(XRBaseInteractable interactable)
    {
        return base.CanSelect(interactable) && (selectTarget == null || selectTarget == interactable);
    }

    // New code
    public override bool CanSelect(IXRSelectInteractable interactable)
    {
        return base.CanSelect(interactable) && (!hasSelection || IsSelecting(interactable));
    }
}

Changed XRInteractionManager methods ClearInteractorSelection and ClearInteractorHover from public to protected. These are invoked each frame automatically and were not intended to be called by external scripts.
Changed behaviors that used the attachTransform property of XRBaseInteractor and XRGrabInteractable to instead use IXRInteractor.GetAttachTransform(IXRInteractable) and IXRInteractable.GetAttachTransform(IXRInteractor) when possible. Users can override the GetAttachTransform methods to customize which Transform should be used for a given Interactor or Interactable.
Changed Interactor and Interactable interaction Layer checks to use the new InteractionLayerMask instead of the Unity physics LayerMask. Layers for the Interaction Layer Mask can be edited separately from Unity physics Layers. A migration tool was added to upgrade the field in all Prefabs and scenes. You will be prompted automatically after upgrading the package, and it can also be done at any time by opening Edit > Project Settings > XR Interaction Toolkit and clicking Run Interaction Layer Mask Updater.
Changed Toggle and Sticky in Select Action Trigger so the toggled on state is now based on whether a selection actually occurred rather than whether there was simply a valid target. This means that a user that presses the select button while pointing at a valid target but one that can not be selected will no longer be in a toggled on state to select other interactables that can be selected.
Changed Socket Interactor so the hover mesh can appear for all valid Interactable components, not just Grab Interactable components.
Changed XRRayInteractor.TranslateAnchor so the Ray Origin Transform is passed instead of the Original Attach Transform, and renamed the parameter from originalAnchor to rayOrigin.
Changed HoverEnterEventArgs, HoverExitEventArgs, SelectEnterEventArgs, and SelectExitEventArgs by adding a manager property of type XRInteractionManager.
Changed minimum supported version of the Unity Editor from 2019.3 to 2019.4 (LTS).

Deprecated

Deprecated XRRig which was replaced by XROrigin in a new dependent package XR Core Utilities. XROrigin combines the functionality of XRRig and ARSessionOrigin.
Deprecated XRBaseInteractor.requireSelectExclusive which was used by XRSocketInteractor. That logic was moved into CanSelect by utilizing the isSelected property of the interactable.
Deprecated XRRayInteractor.originalAttachTransform and replaced with rayOriginTransform. The original pose of the Attach Transform can now be obtained with new methods (GetAttachPoseOnSelect and GetLocalAttachPoseOnSelect).
Deprecated GetControllerState and SetControllerState from the XRBaseController. That logic was moved into the currentControllerState property.
Deprecated XRControllerState.poseDataFlags due to being replaced by the new field XRControllerState.inputTrackingState to track the controller pose state.
Deprecated the XRControllerState constructor; the inputTrackingState parameter is now required.
Deprecated AddRecordingFrame(double, Vector3, Quaternion, bool, bool, bool) in the XRControllerRecording; use AddRecordingFrame(XRControllerState) or AddRecordingFrameNonAlloc instead.

Fixed

Fixed Teleportation Areas and Anchors causing undesired teleports when two different Ray Interactors are pointed at them by setting their default Select Mode to Multiple. By default, a teleport would be triggered On Select Exit, but that would occur when each Ray Interactor would take selection. Users with existing projects should change the Select Mode to Multiple.
Fixed Sockets sometimes showing either the wrong hover mesh or appearing while selected for a single frame when the selection state changed that frame.
Fixed Sockets sometimes showing the hover mesh for a single frame after another Interactor would take its selection when the Recycle Delay Time should have suppressed it from appearing.
Fixed controller's recording serialization losing data when restarting the Unity Editor.
Fixed releasing XRGrabInteractable objects after a teleport from having too much energy.
Fixed pixelDragThresholdMultiplier not being squared when calculating the threshold in UIInputModule. To keep the same drag threshold you should update the Tracked Device Drag Threshold Multiplier property of your XRUIInputModule (and your subclasses of UIInputModule) to its square root in the Inspector window; for example, a value of 2 should be changed to 1.414214 (or sqrt(2)). (1348680)

[2.0.0-pre.2] - 2021-11-04

Changed

Changed package version for internal release.

[2.0.0-pre.1] - 2021-10-22

Changed

Changed package version for internal release.

[1.0.0-pre.8] - 2021-10-26

Changed

Changed the setter of XRBaseInteractable.selectingInteractor from private to protected.

Fixed

Fixed XRBaseController so its default XRControllerState is no longer constructed with a field initializer to avoid allocation when not needed, such as when it is replaced with SetControllerState.
Fixed XRUIInputModule not processing clicks properly when using simulated touches, such as when using the Device Simulator view. This change means mouse input is not processed when there are touches, matching the behavior of other modules like the Standalone Input Module.
Fixed Direct Interactor logging a warning about not having a required trigger Collider when it has a Rigidbody.
Fixed missing dependency on com.unity.modules.physics.
Fixed the sort order of ray casts returned by TrackedDevicePhysicsRaycaster.Raycast so that distance is in ascending order (closest first). It was previously returning in descending order (furthest first). In practice, this bug did not affect users since EventSystem.RaycastAll would correct the order.

[1.0.0-pre.6] - 2021-09-10

Changed

Changed ARGestureInteractor.GetValidTargets to no longer filter out Interactable objects based on the camera direction. The optimization method used was faulty and could cause Interactable objects that were still visible to be excluded from the list. (1354009)

Fixed

Fixed Tracked Device Physics Raycaster so it will include ray cast hits for GameObjects that did not have an event handler. This bug was causing events like IPointerEnterHandler.OnPointerEnter to not be invoked when the hit was on a child Collider that did not itself have an event handler. (1356459)
Fixed XRBaseInteractable.isHovered so it only gets set to false when all Interactors exit hovering. It was previously getting set to false when any Interactor would exit hovering even if another Interactor was still hovering.
Fixed use of obsolete properties in TrackedPoseDriver when using Input System package version 1.1.0-pre.6 or newer.
Fixed the Default Input Actions sample to be compatible with Input System package version 1.1.0 by merging the two bindings for the Turn action into one binding with both Sector interactions.
Fixed the Socket Interactor hover mesh not matching the actual pose the Grab Interactable would attach to in the case when its attach transform was offset or rotated. Also fixed the pose of child meshes. (1358567)
Fixed Interactable objects not being considered valid targets for Direct and Socket Interactors when the Interactable was registered after it had entered the trigger collider of the Interactor. Note that Unity rules for Colliders and OnTriggerEnter/OnTriggerExit still applies where the Interactable GameObject being deactivated and then moved will cause the Interactor to miss the trigger enter/exit event. If the object is manipulated in that way, those trigger methods need to be manually called to inform the Direct or Socket Interactor. (1340469)
Fixed the Trigger Pressed and Grip Pressed buttons not working on the XR Controller (Device-based). They were also renamed to Trigger Button and Grip Button to match the corresponding CommonUsages name.

[1.0.0-pre.5] - 2021-08-02

Added

Added public events to UIInputModule which correspond to calls to EventSystem.Execute and EventSystem.ExecuteHierarchy to allow the events to be globally handled.
Added profiler markers to XRInteractionManager to help with performance analysis.
Added ability for the Animation and Physics 2D built-in packages to be optional.

Changed

Changed XRBaseInteractable.GetDistanceSqrToInteractor to not consider disabled Colliders or Colliders on disabled GameObjects. This logic is used by XRDirectInteractor and XRSocketInteractor to find the closest interactable to select.

Fixed

Fixed poor performance scaling of XRInteractionManager as the number of valid targets and hover targets of an Interactor increased. AR projects with hundreds of gesture interactables should see a large speedup.
Fixed AR Gesture Recognizers producing GC allocations each frame when there were no touches.
Fixed issue involving multiple Interactables that reference the same Collider in their Colliders list. Unregistering an Interactable will now only cause the Collider association to be removed from the XRInteractionManager if it's actually associated with that same Interactable.
Fixed the Inspector showing a warning about a missing XR Controller when the Interactor is able to find one on a parent GameObject.

[1.0.0-pre.4] - 2021-05-14

Added

Added Tracked Device Physics Raycaster component to enable physics-based UI interaction through Unity's Event System. This is similar to Physics Raycaster from the Unity UI package, but with support for ray casts from XR Controllers.
Added finalizeRaycastResults event to UIInputModule that allows a callback to modify ray cast results before they are used by the event system.
Added column to XR Interaction Debugger to show an Interactor's valid targets from XRBaseInteractor.GetValidTargets.
Added property to XR Controller to allow the model to be set to a child object instead of forcing it to be instantiated from prefab.

Changed

Changed Grab Interactable to have a consistent attach point between all Movement Type values, fixing it not attaching at the Attach Transform when using Instantaneous when the object's Transform position was different from the Rigidbody's center of mass. To use the old method of determining the attach point in order to avoid needing to modify the Attach Transform for existing projects, set Attach Point Compatibility Mode to Legacy. Legacy mode will be removed in a future version. (1294410)
Changed Grab Interactable to also set the Rigidbody to kinematic upon being grabbed when the Movement Type is Instantaneous, not just when Kinematic. This improves how it collides with other Rigidbody objects.
Changed Grab Interactable to allow its Attach Transform to be updated while grabbed instead of only using its pose at the moment of being grabbed. This requires not using Legacy mode.
Changed Grab Interactable to no longer use the scale of the selecting Interactor's Attach Transform. This often caused unintended offsets when grabbing objects. The position of the Attach Transform should be used for this purpose rather than the scale. Projects that depended on that functionality can use Legacy mode to revert to the old method.
Changed Grab Interactable default Movement Type from Kinematic to Instantaneous.
Changed Grab Interactable default values for damping and scale so Velocity Tracking moves more similar to the other Movement Type values, making the distinguishing feature instead be how it collides with other Colliders without Rigidbody components. Changed velocityDamping from 0.4 to 1, angularVelocityDamping from 0.4 to 1, and angularVelocityScale from 0.95 to 1.
Changed Socket Interactor override of the Movement Type of Interactables from Kinematic to Instantaneous.
Changed XR Controller so it does not modify the Transform position, rotation, or scale of the instantiated model prefab upon startup instead of resetting those values.
Changed Controller Interactors to let the XR Controller be on a parent GameObject.
Changed so XR Interaction Debugger's Input Devices view is off by default.
Changed Tracked Device Graphic Raycaster to fallback to using Camera.main when the Canvas does not have an Event Camera set.
Changed XR Rig property for the Tracking Origin Mode to only contain supported modes. A value of Not Specified will use the default mode of the XR device.
Changed GameObject > XR menu to only have a single XR Rig rather than separate menu items for Room-Scale and Stationary. Change the Tracking Origin Mode property on the created XR Rig to Floor or Device, respectively, for the same behavior as before.

Deprecated

Deprecated XRBaseController.modelTransform due to being renamed to XRBaseController.modelParent.
Deprecated XRRig.trackingOriginMode due to being replaced with an enum type that only contains supported modes. Use XRRig.requestedTrackingOriginMode and XRRig.currentTrackingOriginMode instead.

Fixed

Fixed Interaction Manager throwing exception InvalidOperationException: Collection was modified; enumeration operation may not execute. when an Interactor or Interactable was registered or unregistered during processing and events.
Fixed Windows Mixed Reality controllers having an incorrect pose when using the Default Input Actions sample. The Position and Rotation input actions will try to bind to pointerPosition and pointerRotation, and fallback to devicePosition and deviceRotation. If the sample has already been imported into your project, you will need to import again to get the update.
Fixed Input System actions such as Select not being recognized as pressed in ActionBasedController when it was bound to an Axis control (for example '/grip') rather than a Button control (for example '/gripPressed').
Fixed XR Interaction Debugger to display Interactors and Interactables from multiple Interaction Managers.
Fixed XR Interaction Debugger having overlapping text when an Interactor was hovering over multiple Interactables.
Fixed Tree View panels in the XR Interaction Debugger to be collapsible.
Fixed TestFixture classes in the test assembly to be internal instead of public.
Fixed Grab Interactable to use scaled time for easing and smoothing instead of unscaled time.
Fixed Direct and Socket Interactor not being able to interact with an Interactable with multiple Colliders when any of the Colliders leaves the trigger instead of only when all of them leave. (1325375)
Fixed Direct and Socket Interactor not being able to interact with an Interactable when either were registered after the trigger collision occurred.
Fixed XRSocketInteractor to include the select target in its list of valid targets returned by GetValidTargets.
Fixed XRBaseController so it applies the controller state during Before Render even when Input Tracking is disabled.
Fixed missing namespace of InputHelpers to be UnityEngine.XR.Interaction.Toolkit.

[1.0.0-pre.3] - 2021-03-18

Added

Added ability for serialized fields added in derived behaviors to automatically appear in the Inspector. Users will no longer need to create a custom Editor to be able to see those fields in the Inspector. See Extending the XR Interaction Toolkit in the manual for details about customizing how they are drawn.
Added support for EnhancedTouch from the Input System for AR gesture classes. This means AR interaction is functional when the Active Input Handling project setting is set to Input System Package (New).
Added registration events to XRBaseInteractable and XRBaseInteractor which work like those in XRInteractionManager but for just that object.
Added new methods in ARPlacementInteractable to divide the logic in OnEndManipulation into TryGetPlacementPose, PlaceObject, and OnObjectPlaced.
Added XRRayInteractor.hitClosestOnly property to limit the number of valid targets. Enable this to make only the closest Interactable receive hover events rather than all Interactables in the full length of the ray cast.
Added new methods in XRRayInteractor for getting information about UI hits, and made more methods virtual or public.
Added several properties to Grab Interactable (Damping and Scale) to allow for tweaking the velocity and angular velocity when the Movement Type is Velocity Tracking. These values can be adjusted to reduce oscillation and latency from the Interactor.

Changed

Changed script execution order so LocomotionProvider occurs before Interactors are processed, fixing Ray Interactor from casting with stale controller poses when moving or turning the rig and causing visual flicker of the line.
Changed script execution order so XRUIInputModule processing occurs after LocomotionProvider and before Interactors are processed to fix the frame delay with UI hits due to using stale ray cast rays. XRUIInputModule.Process now does nothing, override XRUIInputModule.DoProcess which is called directly from Update.
Changed XRUIInputModule.DoProcess from abstract to virtual. Overriding methods in derived classes should call base.DoProcess to ensure IUpdateSelectedHandler event sending occurs as before.
Changed Ray Interactor's Reference Frame property to use global up as a fallback when not set instead of the Interactor's up.
Changed Ray Interactor Projectile Curve to end at ground height rather than controller height. Additional Ground Height and Additional Flight Time properties can be adjusted to control how long the curve travels, but this change means the curve will be longer than it was in previous versions.
Changed TrackedDeviceGraphicRaycaster to ignore Trigger Colliders by default when checking for 3D occlusion. Added raycastTriggerInteraction property to control this.
Changed XRBaseInteractor.allowHover and XRBaseInteractor.allowSelect to retain their value instead of getting changed to true during OnEnable. Their initial values are unchanged, remaining true.
Changed some AR behaviors to be more configurable rather than using some hardcoded values or requiring using MainCamera. AR Placement Interactable and AR Translation Interactable must now specify a Fallback Layer Mask to support non-trackables instead of always using Layer 9.
Changed IUIInteractor to not inherit from ILineRenderable.

Deprecated

Deprecated XRBaseInteractor.enableInteractions, use XRBaseInteractor.allowHover and XRBaseInteractor.allowSelect instead.

Removed

Removed several MonoBehaviour message functions in AR behaviors to use ProcessInteractable and ProcessInteractor instead.

Fixed

Fixed issue where the end of a Projectile or Bezier Curve lags behind and appears bent when the controller is moved too fast. (1291060)
Fixed Ray Interactor interacting with Interactables that are behind UI. (1312217)
Fixed XRRayInteractor.hoverToSelect not being functional. (1301630)
Fixed Ray Interactor not allowing for valid targets behind an Interactable with multiple Collider objects when the ray hits more than one of those Colliders.
Fixed Ray Interactor performance to only perform ray casts once per frame instead of each time GetValidTargets is called by doing it during ProcessInteractor instead.
Fixed exception in XRInteractorLineVisual when changing the Sample Frequency or Line Type of a Ray Interactor.
Fixed Ray Interactor anchor control rotation when the Rig plane was not up. Added a property anchorRotateReferenceFrame to control the rotation axis.
Fixed Reference Frame missing from the Ray Interactor Inspector when the Line Type was Bezier Curve.
Fixed mouse scroll amount being too large in XRUIInputModule when using Input System.
Fixed Scrollbar initially scrolling to incorrect position at XR pointer down when using TrackedDeviceGraphicRaycaster, which was caused by RaycastResult.screenPosition never being set.
Fixed GestureRecognizer skipping updating some gestures during the same frame when another gesture finished.
Fixed namespace of several Editor classes to be in UnityEditor.XR.Interaction.Toolkit instead of UnityEngine.XR.Interaction.Toolkit.
Fixed default value of Blocking Mask on Tracked Device Graphic Raycaster to be Everything (was skipping Layer 31).

[1.0.0-pre.2] - 2021-01-20

Added

Added registration events to XRInteractionManager and OnRegistered/OnUnregistered methods to XRBaseInteractable and XRBaseInteractor.
Added and improved XML documentation comments and tooltips.
Added warnings to XR Controller (Action-based) when referenced Input Actions have not been enabled.
Added warning to Tracked Device Graphic Raycaster when the Event Camera is not set on the World Space Canvas.

Changed

Changed XRBaseInteractable and XRBaseInteractor to no longer register with XRInteractionManager in Awake and instead register and unregister in OnEnable and OnDisable, respectively.

Changed the signature of all interaction event methods (e.g. OnSelectEntering) to take event data through a class argument rather than being passed the XRBaseInteractable or XRBaseInteractor directly. This was done to allow for additional related data to be provided by the Interaction Manager without requiring users to handle additional methods. This also makes it easier to handle the case when the selection or hover is canceled (due to either the Interactor or Interactable being unregistered as a result of being disabled or destroyed) without needing to duplicate code in an OnSelectCanceling and OnSelectCanceled.

Old Signature	New Signature
`OnHoverEnter(XRBaseInteractor interactor)` -and- `OnHoverEnter(XRBaseInteractable interactable)`	`OnHoverEnter*(HoverEnterEventArgs args)`
`OnHoverExit(XRBaseInteractor interactor)` -and- `OnHoverExit(XRBaseInteractable interactable)`	`OnHoverExit*(HoverExitEventArgs args)`
`OnSelectEnter(XRBaseInteractor interactor)` -and- `OnSelectEnter(XRBaseInteractable interactable)`	`OnSelectEnter*(SelectEnterEventArgs args)`
`OnSelectExit(XRBaseInteractor interactor)` -and- `OnSelectExit(XRBaseInteractable interactable)`	`OnSelectExit*(SelectExitEventArgs args)` and using `!args.isCanceled`
`OnSelectCancel*(XRBaseInteractor interactor)`	`OnSelectExit*(SelectExitEventArgs args)` and using `args.isCanceled`
`OnActivate(XRBaseInteractor interactor)`	`OnActivated(ActivateEventArgs args)`
`OnDeactivate(XRBaseInteractor interactor)`	`OnDeactivated(DeactivateEventArgs args)`

// Example Interactable that overrides an interaction event method.
public class ExampleInteractable : XRBaseInteractable
{
    // Old code -- delete after migrating to new method signature
    protected override void OnSelectEntering(XRBaseInteractor interactor)
    {
        base.OnSelectEntering(interactor);
        // Do something with interactor
    }

    // New code
    protected override void OnSelectEntering(SelectEnterEventArgs args)
    {
        base.OnSelectEntering(args);
        var interactor = args.interactor;
        // Do something with interactor
    }
}

// Example behavior that is the target of an Interactable Event set in the Inspector with a Dynamic binding.
public class ExampleListener : MonoBehaviour
{
    // Old code -- delete after migrating to new method signature and fixing reference in Inspector
    public void OnSelectEntered(XRBaseInteractor interactor)
    {
        // Do something with interactor
    }

    // New code
    public void OnSelectEntered(SelectEnterEventArgs args)
    {
        var interactor = args.interactor;
        // Do something with interactor
    }
}

Changed which methods are called by the Interaction Manager when either the Interactor or Interactable is unregistered. Previously XRBaseInteractable had OnSelectCanceling and OnSelectCanceled called on select cancel, and OnSelectExiting and OnSelectExited called when not canceled. This has been combined into OnSelectExiting(SelectExitEventArgs) and OnSelectExited(SelectExitEventArgs) and the isCanceled property is used to distinguish as needed. The Select Exited event in the Inspector is invoked in either case.
```
public class ExampleInteractable : XRBaseInteractable
{
    protected override void OnSelectExiting(SelectExitEventArgs args)
    {
        base.OnSelectExiting(args);
        // Do something common to both.
        if (args.isCanceled)
            // Do something when canceled only.
        else
            // Do something when not canceled.
    }

}
```
Changed many custom Editors to also apply to child classes so they inherit the custom layout of the Inspector. If your derived class adds a SerializeField or public field, you will need to create a custom Editor to be able to see those fields in the Inspector. For Interactor and Interactable classes, you will typically only need to override the DrawProperties method in XRBaseInteractorEditor or XRBaseInteractableEditor rather than the entire OnInspectorGUI. See Extending the XR Interaction Toolkit in the manual for a code example.
Changed XRInteractionManager.SelectCancel to call OnSelectExiting and OnSelectExited on both the XRBaseInteractable and XRBaseInteractor in a similar interleaved order to other interaction state changes and when either is unregistered.
Changed order of XRInteractionManager.UnregisterInteractor to first cancel the select state before canceling hover state for consistency with the normal update loop which exits select before exiting hover.
Changed XRBaseInteractor.StartManualInteraction and XRBaseInteractor.EndManualInteraction to go through XRInteractionManager rather than bypassing constraints and events on the Interactable.
Changed the GameObject > XR > Grab Interactable menu item to create a visible cube and use a Box Collider so that it is easier to use.
Renamed LocomotionProvider.startLocomotion to LocomotionProvider.beginLocomotion for consistency with method name.

Fixed

Fixed Direct Interactor and Socket Interactor causing exceptions when a valid target was unregistered, such as from being destroyed.
Fixed Ray Interactor clearing custom direction when initializing (fixed initialization of the Original Attach Transform so it copies values from the Attach Transform instead of setting position and rotation values to defaults). (1291523)
Fixed Socket Interactor so only an enabled Renderer is drawn while drawing meshes for hovered Interactables.
Fixed Grab Interactable to respect Interaction Layer Mask for whether it can be hovered by an Interactor instead of always allowing it.
Fixed Grab Interactable so it restores the Rigidbody's drag and angular drag values on drop.
Fixed mouse input not working with Unity UI when Active Input Handling was set to Input System Package.
Fixed issue where Interactables in AR were translated at the height of the highest plane regardless of where the ray is cast.
Fixed so steps to setup camera in XRRig only occurs in Play mode in the Editor.
Fixed file names of .asmdef files to match assembly name.
Fixed broken links for the help button (?) in the Inspector so it opens Scripting API documentation for each behavior in the package. (1291475)
Fixed XR Rig so it handles the Tracking Origin Mode changing on the device.
Fixed XR Controller so it only sets position and rotation while the controller device is being tracked instead of resetting to the origin (such as from the device disconnecting or opening a system menu).

[1.0.0-pre.1] - 2020-11-14

Removed

Removed anchor control deadzone properties from XR Controller (Action-based) used by Ray Interactor, it should now be configured on the Actions themselves

[0.10.0-preview.7] - 2020-11-03

Added

Added multi-object editing support to all Editors

Fixed

Fixed Inspector foldouts to keep expanded state when clicking between GameObjects

[0.10.0-preview.6] - 2020-10-30

Added

Added support for haptic impulses in XR Controller (Action-based)

Fixed

Fixed issue with actions not being considered pressed the frame after triggered
Fixed issue where an AR test would fail due to the size of the Game view
Fixed exception when adding an Input Action Manager while playing

[0.10.0-preview.5] - 2020-10-23

Added

Added sample containing default set of input actions and presets

Fixed

Fixed issue with PrimaryAxis2D input from mouse not moving the scroll bars on UI as expected. (1278162)
Fixed issue where Bezier Curve did not take into account controller tilt. (1245614)
Fixed issue where a socket's hover mesh was offset. (1285693)
Fixed issue where disabling parent before XRGrabInteractable child was causing an error in OnSelectCanceling

[0.10.0-preview.4] - 2020-10-14

Fixed

Fixed migration of a renamed field in interactors

[0.10.0-preview.3] - 2020-10-14

Added

Added ability to control whether the line will always be cut short at the first ray cast hit, even when invalid, to the Interactor Line Visual (1252532)

Changed

Renamed OnSelectEnter, OnSelectExit, OnSelectCancel, OnHoverEnter, OnHoverExit, OnFirstHoverEnter, and OnLastHoverExit to OnSelectEntered, OnSelectExited, OnSelectCanceled, OnHoverEntered, OnHoverExited, OnFirstHoverEntered, and OnLastHoverExited respectively.
Replaced some ref parameters with out parameters in ILineRenderable; callers should replace ref with out

Fixed

Fixed Tracked Device Graphic Raycaster not respecting the Raycast Target property of UGUI Graphic when unchecked (1221300)
Fixed XR Ray Interactor flooding the console with assertion errors when sphere cast is used (1259554, 1266781)
Fixed foldouts in the Inspector to expand or collapse when clicking the label, not just the icon (1259683)
Fixed created objects having a duplicate name of a sibling (1259702)
Fixed created objects not being selected automatically (1259682)
Fixed XRUI Input Module component being duplicated in EventSystem GameObject after creating it from UI Canvas menu option (1218216)
Fixed missing AudioListener on created XR Rig Camera (1241970)
Fixed several issues related to creating objects from the GameObject menu, such as broken undo/redo and proper use of context object
Fixed issue where GameObjects parented under an XRGrabInteractable did not retain their local position and rotation when drawn as a Socket Interactor Hover Mesh (1256693)
Fixed issue where Interaction callbacks (OnSelectEnter, OnSelectExit, OnHoverEnter, and OnHoverExit) are triggered before interactor and interactable objects are updated. (1231662, 1228907, 1231482)

[0.10.0-preview.2] - 2020-08-26

Added

Added XR Device Simulator and sample assets for simulating an XR HMD and controllers using keyboard & mouse

[0.10.0-preview.1] - 2020-08-10

Added

Added continuous move and turn locomotion

Changed

Changed accessibility levels to avoid protected fields, instead exposed through properties
Components that use Input System actions no longer automatically enable or disable them. Add the InputActionManager component to a GameObject in a scene and use the Inspector to reference the InputActionAsset you want to automatically enable at startup.
Some properties have been renamed from PascalCase to camelCase to conform with coding standard; the API Updater should update usage automatically in most cases

Fixed

Fixed compilation issue when AR Foundation package is also installed
Fixed the Interactor Line Visual lagging behind the controller (1264748)
Fixed Socket Interactor not creating default hover materials, and backwards usage of the materials (1225734)
Fixed Tint Interactable Visual to allow it to work with objects that have multiple materials
Improved Tint Interactable Visual to not create a material instance when Emission is enabled on the material

[0.9.9-preview.3] - 2020-06-24

Changed

In progress changes to visibility

[0.9.9-preview.2] - 2020-06-22

Changed

Hack week version push.

[0.9.9-preview.1] - 2020-06-04

Changed

Swaps axis for feature API anchor manipulation

Fixed

Fixed controller recording not working
Start controller recording at 0 time so you do not have to wait for the recording to start playing.

[0.9.9-preview] - 2020-06-04

Added

Added Input System support
Added ability to query the controller from the interactor

Changed

Changed a number of members and properties to be protected rather than private
Changed to remove sealed from a number of classes.

[0.9.4-preview] - 2020-04-01

Fixed

Fixed to allow 1.3.X or 2.X versions of legacy input helpers to work with the XR Interaction Toolkit.

[0.9.3-preview] - 2020-01-23

Added

Added pose provider support to XR Controller
Added ability to put objects back to their original hierarchy position when dropping them
Made teleport configurable to use either activate or select
Removed need for box colliders behind UI to stop line visuals from drawing through them

Fixed

Fixed minor documentation issues
Fixed passing from hand to hand of objects using direct interactors
Fixed null ref in controller states clear
Fixed no "OnRelease" even for Activate on Grabbable

[0.9.2-preview] - 2019-12-17

Changed

Rolled LIH version back until 1.3.9 is on production.

[0.9.1-preview] - 2019-12-12

Fixed

Documentation image fix

[0.9.0-preview] - 2019-12-06

Changed

Release candidate

[0.0.9-preview] - 2019-12-06

Changed

Further release prep

[0.0.8-preview] - 2019-12-05

Changed

Pre-release release.

[0.0.6-preview] - 2019-10-15

Changed

Changes to README.md file

Fixed

Further CI/CD fixes.

[0.0.5-preview] - 2019-10-03

Changed

Renamed everything to com.unity.xr.interaction.toolkit / XR Interaction Toolkit

Fixed

Setup CI correctly.

[0.0.4-preview] - 2019-05-08

Changed

Bump package version for CI tests.

[0.0.3-preview] - 2019-05-07

Added

Initial preview release of the XR Interaction framework.