30 lines
1.7 KiB
C#
30 lines
1.7 KiB
C#
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using Unity.Collections;
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using UnityEngine.SubsystemsImplementation;
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namespace UnityEngine.XR.ARSubsystems
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{
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/// <summary>
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/// Base class for subsystems that detect and track things in the physical environment.
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/// </summary>
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/// <typeparam name="TTrackable">The trackable's data, often a blittable type to inter-operate with native code.</typeparam>
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/// <typeparam name="TSubsystem">Concrete subsystem deriving from TrackingSubsystem.</typeparam>
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/// <typeparam name="TSubsystemDescriptor">The subsystem descriptor for the underlying subsystem.</typeparam>
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/// <typeparam name="TProvider">Provider type for the TrackingSubsystem-derived subsystem.</typeparam>
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public abstract class TrackingSubsystem<TTrackable, TSubsystem, TSubsystemDescriptor, TProvider>
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: SubsystemWithProvider<TSubsystem, TSubsystemDescriptor, TProvider>
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where TTrackable : struct, ITrackable
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where TSubsystem : SubsystemWithProvider, new()
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where TSubsystemDescriptor : SubsystemDescriptorWithProvider
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where TProvider : SubsystemProvider<TSubsystem>
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{
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/// <summary>
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/// Retrieves a set of changes (additions, updates, and removals) since the last
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/// time <see cref="GetChanges(Allocator)"/> was called. This is typically called
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/// once per frame to update the derived class's internal state.
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/// </summary>
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/// <param name="allocator">The <c>Allocator</c> to use when creating the <c>NativeArray</c>s in <see cref="TrackableChanges{T}"/>.</param>
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/// <returns>The set of changes since the last time this method was invoked.</returns>
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public abstract TrackableChanges<TTrackable> GetChanges(Allocator allocator);
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}
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}
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