Example projects that use [*AR Foundation 3.0*](https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@3.1/manual/index.html) and demonstrate its functionality with sample assets and components.
Example projects that use [*AR Foundation 4.0*](https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@3.0/manual/index.html) and demonstrate its functionality with sample assets and components.
ARSubsystems defines an interface, and the platform-specific implementations are in the ARCore and ARKit packages. ARFoundation turns the AR data provided by ARSubsystems into Unity `GameObject`s and `MonoBehavour`s.
## Why version should I use?
The `master` branch is compatible with Unity 2019.2 and later. For 2018.4, see the [1.5-preview branch](https://github.com/Unity-Technologies/arfoundation-samples/tree/1.5-preview).
A Unity package is either "Preview" or "Verified". The latest version of ARFoundation is usually marked as preview and may include experimental or unstable features. A "verified" package is developed targeting a specific version of Unity (though it may work with earlier version as well). All packages verified for the same version of Unity are known to work well together.
For privacy reasons, use of ARKit's face tracking feature requires additional validation in order to publish your app on the App Store. If your application binary contains certain face tracking related symbols, your app may fail validation. For this reason, we provide this feature as a separate package which must be explicitly included.
ARFoundation is built on "[subsystems](https://docs.unity3d.com/2019.3/Documentation/ScriptReference/Subsystem.html)" and depends on a separate package called [ARSubsystems](https://docs.unity3d.com/Packages/com.unity.xr.arsubsystems@4.0/manual/index.html). ARSubsystems defines an interface, and the platform-specific implementations are in the [ARCore](https://docs.unity3d.com/Packages/com.unity.xr.arcore@4.0/manual/index.html) and [ARKit](https://docs.unity3d.com/Packages/com.unity.xr.arkit@4.0/manual/index.html) packages. ARFoundation turns the AR data provided by ARSubsystems into Unity `GameObject`s and `MonoBehavour`s.
## ARKit 3 Support
The `master` branch is compatible with Unity 2019.3 and later. For 2018.4, see the [1.5-preview branch](https://github.com/Unity-Technologies/arfoundation-samples/tree/1.5-preview).
The ARKit XR Plugin and ARKit Face Tacking packages support both ARKit 2 and ARKit 3 simultaneously. We supply separate libraries and select the appropriate one based on the version of Xcode selected in your Build Settings. This should eliminate the confusion over which package version is compatible with which Xcode version.
## Why is ARKit Face Tracking a separate package?
The ARKit 3 features require Xcode 11 and iOS/iPadOS 13.
For privacy reasons, use of ARKit's face tracking feature requires additional validation in order to publish your app on the App Store. If your application binary contains certain face tracking related symbols, your app may fail validation. For this reason, we provide this feature as a separate package which must be explicitly included.
1. Download the latest version of Unity 2019.2 or later.
1. Download the latest version of Unity 2019.3 or later.
4. See the [AR Foundation Documentation](https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@latest?preview=1) for usage instructions and more information.
4. See the [AR Foundation Documentation](https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@4.0/manual/index.html) for usage instructions and more information.
# Samples
## ImageTracking
This sample demonstrates image tracking. Image tracking is supported on ARCore and ARKit. To enable image tracking, you must first create an `XRReferenceImageLibrary`. This is the set of images to look for in the environment. [Click here](https://docs.unity3d.com/Packages/com.unity.xr.arsubsystems@3.1/manual/image-tracking.html) for instructions on creating one.
This sample demonstrates image tracking. Image tracking is supported on ARCore and ARKit. To enable image tracking, you must first create an `XRReferenceImageLibrary`. This is the set of images to look for in the environment. [Click here](https://docs.unity3d.com/Packages/com.unity.xr.arsubsystems@4.0/manual/image-tracking.html) for instructions on creating one.
At runtime, ARFoundation will generate an `ARTrackedImage` for each detected reference image. This sample uses the [`TrackedImageInfoManager.cs`](https://github.com/Unity-Technologies/arfoundation-samples/blob/master/Assets/Scenes/ImageTracking/TrackedImageInfoManager.cs) script to overlay the original image on top of the detected image, along with some meta data.
Similar to the image tracking sample, this sample detects a 3D object from a set of reference objects in an `XRReferenceObjectLibrary`. [Click here](https://docs.unity3d.com/Packages/com.unity.xr.arsubsystems@3.1/manual/object-tracking.html) for instructions on creating one.
Similar to the image tracking sample, this sample detects a 3D object from a set of reference objects in an `XRReferenceObjectLibrary`. [Click here](https://docs.unity3d.com/Packages/com.unity.xr.arsubsystems@4.0/manual/object-tracking.html) for instructions on creating one.
To use this sample, you must have a physical object the device can recognize. The sample's reference object library is built using two reference objects. The sample includes [printable templates](https://github.com/Unity-Technologies/arfoundation-samples/tree/master/Assets/Scenes/Object%20Tracking/Printable%20Templates) which can be printed on 8.5x11 inch paper and folded into a cube and cylinder.
Tim Mowrer
4 年前