/// <summary>
/// Should create a new reference "attached" to the trackable with id <paramref name="trackableToAffix"/>.
/// The behavior of the reference point depends on the type of trackable to which this reference point is attached and
/// may be implemenation-defined.
/// </summary>
/// <param name="trackableToAffix">The id of the trackable to which to attach.</param>
/// <param name="pose">The pose, in session space, of the reference point to create.</param>
/// <param name="referencePoint">The new reference point. Must be valid only if this method returns <c>true</c>.</param>
/// <returns><c>true</c> if the new reference point was added, otherwise <c>false</c>.</returns>
public virtual bool TryAttachReferencePoint(
TrackableId trackableToAffix,
Pose pose,
out XRReferencePoint referencePoint)
{
referencePoint = default(XRReferencePoint);
return(false);
}
/// <summary>
/// Invoked to get the changes to reference points (added, updated, and removed) since the last call to
/// <see cref="GetChanges(XRReferencePoint, Allocator)"/>.
/// </summary>
/// <param name="defaultReferencePoint">The default reference point. This should be used to initialize the returned
/// <c>NativeArray</c>s for backwards compatibility.
/// See <see cref="TrackableChanges{T}.TrackableChanges(void*, int, void*, int, void*, int, T, int, Unity.Collections.Allocator)"/>.
/// </param>
/// <param name="allocator">An allocator to use for the <c>NativeArray</c>s in <see cref="TrackableChanges{T}"/>.</param>
/// <returns>Changes since the last call to <see cref="GetChanges(XRReferencePoint, Allocator)"/>.</returns>
public abstract TrackableChanges <XRReferencePoint> GetChanges(XRReferencePoint defaultReferencePoint, Allocator allocator);
/// <summary>
/// Should create a new reference point with the provide <paramref name="pose"/>.
/// </summary>
/// <param name="pose">The pose, in session space, of the new reference point.</param>
/// <param name="referencePoint">The new reference point. Must be valid only if this method returns <c>true</c>.</param>
/// <returns>Should return <c>true</c> if the new reference point was added, otherwise <c>false</c>.</returns>
public virtual bool TryAddReferencePoint(Pose pose, out XRReferencePoint referencePoint)
{
referencePoint = default(XRReferencePoint);
return(false);
}
/// <summary>
/// Invoked to get the changes to reference points (added, updated, & removed) since the last call to <see cref="GetChanges(Allocator)"/>.
/// </summary>
/// <param name="defaultReferencePoint">The default reference point. This should be used to initialize the returned
/// <c>NativeArray</c>s for backwards compatibility.
/// See <see cref="TrackableChanges{T}.TrackableChanges(void*, int, void*, int, void*, int, T, int, Allocator)"/>.
/// </param>
/// <param name="allocator">An allocator to use for the <c>NativeArray</c>s in <see cref="TrackableChanges{T}"/>.</param>
/// <returns>Changes since the last call to <see cref="GetChanges"/>.</returns>
public virtual TrackableChanges <XRReferencePoint> GetChanges(
XRReferencePoint defaultReferencePoint,
Allocator allocator)
{
return(default(TrackableChanges <XRReferencePoint>));
}