93 lines
4.3 KiB
C#
93 lines
4.3 KiB
C#
// Copyright HTC Corporation All Rights Reserved.
|
|
|
|
using System;
|
|
using System.Runtime.InteropServices;
|
|
|
|
namespace VIVE.OpenXR.UserPresence
|
|
{
|
|
// -------------------- 12.39. XR_EXT_user_presence --------------------
|
|
#region New Structures
|
|
/// <summary>
|
|
/// The application can use the XrSystemUserPresencePropertiesEXT event in xrGetSystemProperties to detect if the given system supports the sensing of user presence.
|
|
/// </summary>
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
public struct XrSystemUserPresencePropertiesEXT
|
|
{
|
|
/// <summary>
|
|
/// The <see cref="XrStructureType"/> of this structure.
|
|
/// </summary>
|
|
public XrStructureType type;
|
|
/// <summary>
|
|
/// NULL or a pointer to the next structure in a structure chain. No such structures are defined in core OpenXR or this extension.
|
|
/// </summary>
|
|
public IntPtr next;
|
|
/// <summary>
|
|
/// An <see cref="XrBool32"/> value that indicates whether the system supports user presence sensing.
|
|
/// </summary>
|
|
public XrBool32 supportsUserPresence;
|
|
}
|
|
|
|
/// <summary>
|
|
/// The XrEventDataUserPresenceChangedEXT event is queued for retrieval using xrPollEvent when the user presence is changed, as well as when a session starts running.<br></br>
|
|
/// Receiving XrEventDataUserPresenceChangedEXT with the isUserPresent is XR_TRUE indicates that the system has detected the presence of a user in the XR experience.For example, this may indicate that the user has put on the headset, or has entered the tracking area of a non-head-worn XR system.<br></br>
|
|
/// Receiving XrEventDataUserPresenceChangedEXT with the isUserPresent is XR_FALSE indicates that the system has detected the absence of a user in the XR experience.For example, this may indicate that the user has removed the headset or has stepped away from the tracking area of a non-head-worn XR system.<br></br>
|
|
/// The runtime must queue this event upon a successful call to the xrBeginSession function, regardless of the value of isUserPresent, so that the application can be in sync on the state when a session begins running.<br></br>
|
|
/// The runtime must return a valid XrSession handle for a running session.<br></br>
|
|
/// After the application calls xrEndSession, a running session is ended and the runtime must not enqueue any more user presence events.Therefore, the application will no longer observe any changes of the isUserPresent until another running session.
|
|
/// </summary>
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
public struct XrEventDataUserPresenceChangedEXT
|
|
{
|
|
/// <summary>
|
|
/// The <see cref="XrStructureType"/> of this structure.
|
|
/// </summary>
|
|
public XrStructureType type;
|
|
/// <summary>
|
|
/// NULL or a pointer to the next structure in a structure chain. No such structures are defined in core OpenXR or this extension.
|
|
/// </summary>
|
|
public IntPtr next;
|
|
/// <summary>
|
|
/// The <see cref="XrSession"/> that is receiving the notification.
|
|
/// </summary>
|
|
public XrSession session;
|
|
/// <summary>
|
|
/// An <see cref="XrBool32"/> value for new state of user presence after the change.
|
|
/// </summary>
|
|
public XrBool32 isUserPresent;
|
|
|
|
/// <summary>
|
|
/// The XR_EXT_user_presence extension must be enabled prior to using XrEventDataUserPresenceChangedEXT.
|
|
/// </summary>
|
|
public XrEventDataUserPresenceChangedEXT(XrStructureType in_type, IntPtr in_next, XrSession in_session, XrBool32 in_present)
|
|
{
|
|
type = in_type;
|
|
next = in_next;
|
|
session = in_session;
|
|
isUserPresent = in_present;
|
|
}
|
|
/// <summary>
|
|
/// Retrieves the identity value of XrEventDataUserPresenceChangedEXT.
|
|
/// </summary>
|
|
public static XrEventDataUserPresenceChangedEXT identity {
|
|
get {
|
|
return new XrEventDataUserPresenceChangedEXT(XrStructureType.XR_TYPE_EVENT_DATA_USER_PRESENCE_CHANGED_EXT, IntPtr.Zero, 0, true); // user is default present
|
|
}
|
|
}
|
|
public static bool Get(XrEventDataBuffer eventDataBuffer, out XrEventDataUserPresenceChangedEXT eventDataUserPresenceChangedEXT)
|
|
{
|
|
eventDataUserPresenceChangedEXT = identity;
|
|
|
|
if (eventDataBuffer.type == XrStructureType.XR_TYPE_EVENT_DATA_USER_PRESENCE_CHANGED_EXT)
|
|
{
|
|
eventDataUserPresenceChangedEXT.next = eventDataBuffer.next;
|
|
eventDataUserPresenceChangedEXT.session = BitConverter.ToUInt64(eventDataBuffer.varying, 0);
|
|
eventDataUserPresenceChangedEXT.isUserPresent = BitConverter.ToUInt32(eventDataBuffer.varying, 8);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|
|
#endregion
|
|
}
|