XRTrackedImage.cs
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using System;
using System.Runtime.InteropServices;
namespace UnityEngine.XR.ARSubsystems
{
/// <summary>
/// Contains low-level data for a tracked image in the environment.
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct XRTrackedImage : ITrackable, IEquatable<XRTrackedImage>
{
/// <summary>
/// Constructs an <see cref="XRTrackedImage"/>.
/// </summary>
/// <param name="trackableId">The <see cref="TrackableId"/> associated with this tracked image.</param>
/// <param name="sourceImageId">A <c>GUID</c> associated with the source image.</param>
/// <param name="pose">The <c>Pose</c> associated with the detected image.</param>
/// <param name="size">The size (i.e., dimensions) of the detected image.</param>
/// <param name="trackingState">The <see cref="TrackingState"/> of the detected image.</param>
/// <param name="nativePtr">A native pointer associated with the detected image.</param>
public XRTrackedImage(
TrackableId trackableId,
Guid sourceImageId,
Pose pose,
Vector2 size,
TrackingState trackingState,
IntPtr nativePtr)
{
m_Id = trackableId;
m_SourceImageId = sourceImageId;
m_Pose = pose;
m_Size = size;
m_TrackingState = trackingState;
m_NativePtr = nativePtr;
}
/// <summary>
/// Generates a <see cref="XRTrackedImage"/> populated with default values.
/// </summary>
public static XRTrackedImage defaultValue => s_Default;
static readonly XRTrackedImage s_Default = new XRTrackedImage
{
m_Id = TrackableId.invalidId,
m_SourceImageId = Guid.Empty,
m_Pose = Pose.identity,
};
/// <summary>
/// The <see cref="TrackableId"/> associated with this tracked image.
/// </summary>
public TrackableId trackableId => m_Id;
/// <summary>
/// The <c>GUID</c> associated with the source image.
/// </summary>
public Guid sourceImageId => m_SourceImageId;
/// <summary>
/// The <c>Pose</c> associated with this tracked image.
/// </summary>
public Pose pose => m_Pose;
/// <summary>
/// The size (i.e., dimensions) of this tracked image.
/// </summary>
public Vector2 size => m_Size;
/// <summary>
/// The <see cref="TrackingState"/> associated with this tracked image.
/// </summary>
public TrackingState trackingState => m_TrackingState;
/// <summary>
/// A native pointer associated with this tracked image.
/// The data pointed to by this pointer is implementation-defined.
/// While its lifetime is also implementation-defined, it should be
/// valid at least until the next call to
/// <see cref="XRImageTrackingSubsystem.GetChanges(Allocator)"/>.
/// </summary>
public IntPtr nativePtr => m_NativePtr;
public override int GetHashCode()
{
unchecked
{
var hashCode = m_Id.GetHashCode();
hashCode = hashCode * 486187739 + m_SourceImageId.GetHashCode();
hashCode = hashCode * 486187739 + m_Pose.GetHashCode();
hashCode = hashCode * 486187739 + m_Size.GetHashCode();
hashCode = hashCode * 486187739 + m_TrackingState.GetHashCode();
return hashCode;
}
}
public bool Equals(XRTrackedImage other)
{
return
m_Id.Equals(other.m_Id) &&
m_SourceImageId.Equals(other.m_SourceImageId) &&
m_Pose.Equals(other.m_Pose) &&
m_Size.Equals(other.m_Size) &&
m_TrackingState == other.m_TrackingState;
}
public override bool Equals(object obj) => obj is XRTrackedImage && Equals((XRTrackedImage)obj);
public static bool operator==(XRTrackedImage lhs, XRTrackedImage rhs) => lhs.Equals(rhs);
public static bool operator!=(XRTrackedImage lhs, XRTrackedImage rhs) => !lhs.Equals(rhs);
TrackableId m_Id;
Guid m_SourceImageId;
Pose m_Pose;
Vector2 m_Size;
TrackingState m_TrackingState;
IntPtr m_NativePtr;
}
}