263 lines
11 KiB
C#
263 lines
11 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace UnityEngine.XR.ARSubsystems
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{
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/// <summary>
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/// The session-relative data associated with a plane.
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/// </summary>
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/// <seealso cref="XRPlaneSubsystem"/>
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[StructLayout(LayoutKind.Sequential)]
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public struct BoundedPlane : ITrackable, IEquatable<BoundedPlane>
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{
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static readonly BoundedPlane s_Default = new BoundedPlane(
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TrackableId.invalidId,
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TrackableId.invalidId,
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Pose.identity,
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Vector2.zero,
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Vector2.zero,
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PlaneAlignment.None,
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TrackingState.None,
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IntPtr.Zero,
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PlaneClassification.None);
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/// <summary>
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/// Gets a default-initialized <see cref="BoundedPlane"/>. This can be
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/// different from the zero-initialized version, e.g., the <see cref="pose"/>
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/// is <c>Pose.identity</c> instead of zero-initialized.
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/// </summary>
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public static BoundedPlane defaultValue => s_Default;
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/// <summary>
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/// Constructs a new <see cref="BoundedPlane"/>. This is just a data container
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/// for a plane's session relative data. These are typically created by
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/// <see cref="XRPlaneSubsystem.GetChanges(Unity.Collections.Allocator)"/>.
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/// </summary>
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/// <param name="trackableId">The <see cref="TrackableId"/> associated with the plane.</param>
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/// <param name="subsumedBy">The plane which subsumed this one. Use <see cref="TrackableId.invalidId"/> if it has not been subsumed.</param>
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/// <param name="pose">The <c>Pose</c> associated with the plane.</param>
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/// <param name="center">The center of the plane, in plane space (relative to <paramref name="pose"/>).</param>
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/// <param name="size">The dimensions associated with the plane.</param>
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/// <param name="alignment">The <see cref="PlaneAlignment"/> associated with the plane.</param>
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/// <param name="trackingState">The <see cref="TrackingState"/> associated with the plane.</param>
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/// <param name="nativePtr">The native pointer associated with the plane.</param>
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/// <param name="classification">The <see cref="PlaneClassification"/> associated with the plane.</param>
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public BoundedPlane(
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TrackableId trackableId,
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TrackableId subsumedBy,
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Pose pose,
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Vector2 center,
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Vector2 size,
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PlaneAlignment alignment,
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TrackingState trackingState,
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IntPtr nativePtr,
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PlaneClassification classification)
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{
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m_TrackableId = trackableId;
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m_SubsumedById = subsumedBy;
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m_Pose = pose;
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m_Center = center;
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m_Size = size;
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m_Alignment = alignment;
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m_TrackingState = trackingState;
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m_NativePtr = nativePtr;
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m_Classification = classification;
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}
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/// <summary>
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/// The <see cref="TrackableId"/> associated with this plane.
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/// </summary>
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public TrackableId trackableId => m_TrackableId;
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/// <summary>
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/// The <see cref="TrackableId"/> associated with the plane which subsumed this one. Will be <see cref="TrackableId.invalidId"/>
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/// if this plane has not been subsumed.
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/// </summary>
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public TrackableId subsumedById => m_SubsumedById;
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/// <summary>
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/// The <c>Pose</c>, in session space, of the plane.
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/// </summary>
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public Pose pose => m_Pose;
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/// <summary>
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/// The center of the plane in plane space (relative to its <see cref="pose"/>).
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/// </summary>
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public Vector2 center => m_Center;
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/// <summary>
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/// The extents of the plane (half dimensions) in meters.
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/// </summary>
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public Vector2 extents => m_Size * 0.5f;
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/// <summary>
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/// The size (dimensions) of the plane in meters.
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/// </summary>
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public Vector2 size => m_Size;
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/// <summary>
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/// The <see cref="PlaneAlignment"/> of the plane.
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/// </summary>
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public PlaneAlignment alignment => m_Alignment;
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/// <summary>
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/// The <see cref="TrackingState"/> of the plane.
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/// </summary>
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public TrackingState trackingState => m_TrackingState;
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/// <summary>
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/// A native pointer associated with this plane.
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/// The data pointer to by this pointer is implementation defined.
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/// </summary>
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public IntPtr nativePtr => m_NativePtr;
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/// <summary>
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/// The <see cref="PlaneClassification"/> of the plane.
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/// </summary>
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public PlaneClassification classification => m_Classification;
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/// <summary>
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/// The width of the plane in meters.
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/// </summary>
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public float width => m_Size.x;
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/// <summary>
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/// The height (or depth) of the plane in meters.
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/// </summary>
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public float height => m_Size.y;
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/// <summary>
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/// The normal of the plane in session space.
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/// </summary>
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public Vector3 normal => m_Pose.up;
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/// <summary>
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/// Gets an infinite plane in session space.
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/// </summary>
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public Plane plane => new Plane(normal, center);
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/// <summary>
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/// Get the four corners of the plane in session space, in clockwise order.
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/// </summary>
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/// <param name="p0">The first vertex.</param>
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/// <param name="p1">The second vertex.</param>
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/// <param name="p2">The third vertex.</param>
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/// <param name="p3">The fourth vertex.</param>
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public void GetCorners(
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out Vector3 p0,
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out Vector3 p1,
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out Vector3 p2,
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out Vector3 p3)
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{
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var sessionCenter = m_Pose.rotation * center + m_Pose.position;
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var sessionHalfX = (m_Pose.right) * (width * .5f);
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var sessionHalfZ = (m_Pose.forward) * (height * .5f);
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p0 = sessionCenter - sessionHalfX - sessionHalfZ;
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p1 = sessionCenter - sessionHalfX + sessionHalfZ;
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p2 = sessionCenter + sessionHalfX + sessionHalfZ;
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p3 = sessionCenter + sessionHalfX - sessionHalfZ;
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}
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/// <summary>
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/// Generates a new string that describes the plane's properties, suitable for debugging purposes.
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/// </summary>
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/// <returns>A string that describes the plane's properties.</returns>
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public override string ToString()
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{
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return string.Format(
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"Plane:\n\ttrackableId: {0}\n\tsubsumedById: {1}\n\tpose: {2}\n\tcenter: {3}\n\tsize: {4}\n\talignment: {5}\n\tclassification: {6}\n\ttrackingState: {7}\n\tnativePtr: {8:X16}",
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trackableId,
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subsumedById,
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pose,
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center,
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size,
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alignment,
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classification,
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trackingState,
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nativePtr.ToInt64());
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}
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/// <summary>
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/// Tests for equality.
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/// </summary>
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/// <param name="obj">The `object` to compare against.</param>
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/// <returns>`True` if <paramref name="obj"/> is of type <see cref="BoundedPlane"/> and
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/// <see cref="Equals(BoundedPlane)"/> also returns `true`; otherwise `false`.</returns>
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public override bool Equals(object obj) => (obj is BoundedPlane other) && Equals(other);
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/// <summary>
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/// Generates a hash suitable for use with containers like `HashSet` and `Dictionary`.
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/// </summary>
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/// <returns>A hash code generated from this object's fields.</returns>
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public override int GetHashCode()
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{
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unchecked
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{
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var hashCode = m_TrackableId.GetHashCode();
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hashCode = (hashCode * 486187739) + m_SubsumedById.GetHashCode();
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hashCode = (hashCode * 486187739) + m_Pose.GetHashCode();
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hashCode = (hashCode * 486187739) + m_Center.GetHashCode();
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hashCode = (hashCode * 486187739) + m_Size.GetHashCode();
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hashCode = (hashCode * 486187739) + ((int)m_Alignment).GetHashCode();
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hashCode = (hashCode * 486187739) + ((int)m_Classification).GetHashCode();
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hashCode = (hashCode * 486187739) + ((int)m_TrackingState).GetHashCode();
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hashCode = (hashCode * 486187739) + m_NativePtr.GetHashCode();
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return hashCode;
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}
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}
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/// <summary>
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/// Tests for equality. Same as <see cref="Equals(BoundedPlane)"/>.
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/// </summary>
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/// <param name="lhs">The left-hand side of the comparison.</param>
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/// <param name="rhs">The right-hand side of the comparison.</param>
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/// <returns>`True` if <paramref name="lhs"/> is equal to <paramref name="rhs"/>, otherwise `false`.</returns>
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public static bool operator ==(BoundedPlane lhs, BoundedPlane rhs) => lhs.Equals(rhs);
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/// <summary>
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/// Tests for inequality. Same as `!`<see cref="Equals(BoundedPlane)"/>.
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/// </summary>
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/// <param name="lhs">The left-hand side of the comparison.</param>
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/// <param name="rhs">The right-hand side of the comparison.</param>
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/// <returns>`True` if <paramref name="lhs"/> is not equal to <paramref name="rhs"/>, otherwise `false`.</returns>
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public static bool operator !=(BoundedPlane lhs, BoundedPlane rhs) => !lhs.Equals(rhs);
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/// <summary>
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/// Tests for equality.
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/// </summary>
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/// <param name="other">The other <see cref="BoundedPlane"/> to compare against.</param>
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/// <returns>`True` if every field in <paramref name="other"/> is equal to this <see cref="BoundedPlane"/>, otherwise false.</returns>
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public bool Equals(BoundedPlane other)
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{
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return
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m_TrackableId.Equals(other.m_TrackableId) &&
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m_SubsumedById.Equals(other.m_SubsumedById) &&
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m_Pose.Equals(other.m_Pose) &&
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m_Center.Equals(other.m_Center) &&
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m_Size.Equals(other.m_Size) &&
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(m_Alignment == other.m_Alignment) &&
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(m_Classification == other.m_Classification) &&
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(m_TrackingState == other.m_TrackingState) &&
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(m_NativePtr == other.m_NativePtr);
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}
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TrackableId m_TrackableId;
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TrackableId m_SubsumedById;
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Vector2 m_Center;
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Pose m_Pose;
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Vector2 m_Size;
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PlaneAlignment m_Alignment;
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TrackingState m_TrackingState;
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IntPtr m_NativePtr;
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PlaneClassification m_Classification;
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}
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}
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