设备映射教程

本教程演示如何使用Haply 反向服务在 Unity 项目中手动列出、映射和连接设备。

概述

设备映射器（DeviceMapper）组件负责管理Haply 设备（如Inverse3 和 VerseGrip）与场景设备控制器的发现、映射和连接。

场景设置

首先创建触觉装配：GameObject >Haply >Haply Rig（两只手），详见《快速入门指南》。

设备选择器组件

创建一个新的 C# 脚本，名为 DeviceSelector.cs 并将其连接到 设备映射器 游戏对象 在 DeviceSelector 类：

public Inverse3Controller leftInverse3;
public Inverse3Controller rightInverse3;

private DeviceMapper _deviceMapper;
private string _message;
private bool _waitingForVerseGripHandednessConfirm;

设置设备映射器

在 Awake 方法，初始化 _deviceMapper 属性并订阅 Ready 事件来处理设备映射器的就绪状态。

private void Awake()
{
    _deviceMapper = GetComponent<DeviceMapper>();

    _deviceMapper.autoFetchDeviceList = false; // Disable auto-fetch to manually fetch the device list
    _deviceMapper.autoAssign = false; // Disable auto-assign to manually map devices
    _deviceMapper.autoConnect = false; // Disable auto-connect to manually connect devices

    _deviceMapper.Ready.AddListener(OnDeviceMapperReady);
}

获取设备控制器

要获取设备控制器，可以使用 GetInverse3Controller 和 GetVerseGripController 方法。

// Get the first Inverse3 controller in the scene
leftInverse3 = _deviceMapper.GetInverse3Controller();

// Get the first Inverse3 controller in the scene with the specified handedness
leftInverse3 = _deviceMapper.GetInverse3Controller(HandednessType.Left);

// Get the Inverse3 controller in the scene with the specified device ID
leftInverse3 = _deviceMapper.GetInverse3Controller("1309");

// Get the first VerseGrip controller in the scene
verseGripController = _deviceMapper.GetVerseGripController();

// Get the VerseGrip controller in the scene associated with the specified Inverse3 controller
leftVerseGripController = _deviceMapper.GetVerseGripController(leftInverse3);

选择设备控制器手性

在设备准备就绪之前，您可以通过使用 SelectedHandedness 属性。 DeviceMapper 会根据所选手度自动将连接的设备分配给控制器。

// Select the left handedness for the left controller
leftInverse3.SelectedHandedness = HandednessType.Left;

// Select the right handedness for the right controller
rightInverse3.SelectedHandedness = HandednessType.Right;

获取设备列表

要获取已连接设备的列表，可以使用 FetchDeviceListOnce 方法。

// Fetch the list of connected devices
_deviceMapper.FetchDeviceListOnce();

获取设备列表后 DeviceMapper 组件将触发 DeviceListReceived 事件。 您可以使用该事件更新用户界面或执行与设备列表相关的任何其他操作。

// Subscribe to the DeviceListReceived event
_deviceMapper.DeviceListReceived += OnDeviceListReceived;

private void OnDeviceListReceived(object sender, EventArgs e)
{
    // Update the UI or perform any other operations
}

绘图设备

获取设备列表后，您可以使用 MapDevices 方法。

// Map the devices to the controllers
if (_deviceMapper.CanMapDevices())
    _deviceMapper.MapDevices();

"(《世界人权宣言》) CanMapDevices 方法检查设备列表是否完整，控制器是否已准备好进行映射。

连接设备

设备映射完成后，您可以使用 Connect 接收实时数据和控制设备的方法。

信息

在下面的示例中，我们调用 ProbeCursorPosition 方法，以便在设备准备就绪时开始探测光标位置。

// Connect the devices to the WebSocket server to receive real-time data
if (_deviceMapper.State == DeviceMapperState.MAPPING_COMPLETE)
    _deviceMapper.Connect();

交换设备

要在控制器之间交换设备，可以使用 SwapInverse3 或 SwapVerseGrip 方法。

下面的示例演示了如何要求用户按下右控制器上的按钮来确认手型，或者在手型不正确时交换设备。

在 OnDeviceMapperReady 方法，我们会订阅 ButtonDown 控制器的事件来处理按下的按钮，并要求用户确认手势。

private void OnDeviceMapperReady()
{
    // Get the VerseGrip controllers using the DeviceMapper (must be done in Start or on DeviceMapper Ready event)
    var leftVerseGrip = _deviceMapper.GetVerseGripController(leftInverse3);
    var rightVerseGrip = _deviceMapper.GetVerseGripController(rightInverse3);
    
    leftVerseGrip.ButtonDown.AddListener(OnButtonDown);
    rightVerseGrip.ButtonDown.AddListener(OnButtonDown);

    // Start waiting for button press on the right controller
    _message = "Press the button on the right controller to confirm handedness.";
    _waitingForVerseGripHandednessConfirm = true;
}

在 OnButtonDown 方法，我们会检查用户是否按下了右控制器上的按钮，以确认用户的手势。

private void OnButtonDown(VerseGripController verseGrip, VerseGripEventArgs args)
{
    if (_waitingForVerseGripHandednessConfirm)
    {
        if (verseGrip != _deviceMapper.GetVerseGripController(rightInverse3))
        {
            _deviceMapper.SwapVerseGrip();
        }
        _waitingForVerseGripHandednessConfirm = false;
    }
}

private void OnGUI()
{
    if (_waitingForVerseGripHandednessConfirm)
    {
        GUILayout.Label(_message);
    }
}

警告

此示例仅用于教学目的，不应在生产中使用。 请在您的应用程序中寻找合适的方法来确认手性。

错误处理

如果在设备映射过程中发生错误，则 Error 事件将被触发。 您可以使用该事件处理错误并向用户提供反馈。

// Subscribe to the Error event
_deviceMapper.ErrorOccured += OnError;

private void OnError(object sender, ErrorEventArgs e)
{
    _message = e.ErrorMessage;
    switch (e.ErrorCode)
    {
        // Handle the error...
    }
}

源文件

本示例使用的最终场景和所有相关文件都可以从 Unity 软件包管理器中的教程示例中导入。

DeviceSelector.cs

警告

"(《世界人权宣言》) DeviceSelector 组件用于教程目的，不应在生产中使用。 它演示了如何在 Unity 项目中列出、映射和连接设备。

using Haply.Inverse;
using Haply.Inverse.DeviceControllers;
using Haply.Inverse.DeviceData;
using UnityEngine;

namespace Haply.Samples.Tutorials._7_DeviceMapping
{
    public class DeviceSelector : MonoBehaviour
    {
        private DeviceMapper _deviceMapper;

        public Inverse3Controller leftInverse3;
        public Inverse3Controller rightInverse3;

        private string _message;
        private bool _waitingForVerseGripHandednessConfirm;

        private void Awake()
        {
            _deviceMapper = GetComponent<DeviceMapper>();
            _deviceMapper.autoAssign = false;
            _deviceMapper.autoConnect = false;
            _deviceMapper.autoFetchDeviceList = false;
            _deviceMapper.Ready.AddListener(SetupVerseGripHandednessCheck);
            _deviceMapper.Error += OnError;
            leftInverse3.Ready.AddListener(OnDeviceReady);
            rightInverse3.Ready.AddListener(OnDeviceReady);
        }

        // Start the verse grip handedness check (ask the user to press a button on the right controller)
        private void SetupVerseGripHandednessCheck()
        {
            // Get the VerseGrip controllers using the DeviceMapper (must be done in Start or on DeviceMapper Ready event)
            var leftVerseGrip = _deviceMapper.GetVerseGripController(leftInverse3);
            var rightVerseGrip = _deviceMapper.GetVerseGripController(rightInverse3);
            
            leftVerseGrip.ButtonDown.AddListener(OnButtonDown);
            rightVerseGrip.ButtonDown.AddListener(OnButtonDown);

            // Start waiting for button press on the right controller
            _message = "Press the button on the right controller to confirm handedness.";
            _waitingForVerseGripHandednessConfirm = true;
        }

        // Handle the button down event to confirm the verse grip handedness
        private void OnButtonDown(VerseGripController verseGrip, VerseGripEventArgs args)
        {
            if (_waitingForVerseGripHandednessConfirm && args.Button is VerseGripButton.Button0 or VerseGripButton.Button1)
            {
                if (verseGrip == _deviceMapper.GetVerseGripController(rightInverse3))
                {
                    _message = "VerseGrip handedness confirmed!";
                }
                else
                {
                    _message = "Wrong controller button pressed. Swap the controllers.";
                    _deviceMapper.SwapVerseGrip();
                }
                _waitingForVerseGripHandednessConfirm = false;
            }
            else
            {
                _message = $"Button {args.Button} pressed on {verseGrip.DeviceId}";
            }
        }

        // Handle the device ready event to start probing the cursor position
        private void OnDeviceReady(Inverse3Controller device, Inverse3EventArgs _)
        {
            // Start probing the cursor position when the device is ready
            device.ProbeCursorPosition();
        }

        // Handle errors from the device mapper
        private void OnError(object sender, DeviceMapperErrorEventArgs e)
        {
            _message = e.ErrorMessage;
        }

        // Display the device list
        private void DeviceListGUI()
        {
            if (_deviceMapper.GetNumInverse3() + _deviceMapper.GetNumVerseGrip() > 0)
            {
                GUILayout.Label("Connected devices:");
                foreach (var device in _deviceMapper.GetInverse3Devices())
                {
                    GUILayout.Label($"- {device}");
                }
                foreach (var device in _deviceMapper.GetVerseGripDevices())
                {
                    GUILayout.Label($"- {device}");
                }
            }
        }

        // Display the device mapper state and actions.
        private void DeviceMapperGUI()
        {
            switch (_deviceMapper.State)
            {
                case DeviceMapperState.UNINITIALIZED:
                case DeviceMapperState.INITIALIZED:
                    if (GUILayout.Button(new GUIContent("List devices",
                        "Fetch the device list by HTTP request")))
                    {
                        _deviceMapper.FetchDeviceListOnce();
                        _message = "Fetching device list...";
                    }
                    break;

                case DeviceMapperState.DEVICE_LIST_COMPLETE:
                    if (GUILayout.Button(new GUIContent("Map devices",
                        "Map the devices to the controllers according to the selected handedness")))
                    {
                        _deviceMapper.MapDevices();
                        _message = "Mapping devices...";
                    }
                    break;

                case DeviceMapperState.MAPPING_COMPLETE:
                    if (!_deviceMapper.IsReady)
                    {
                        if (GUILayout.Button(new GUIContent("Connect",
                            "Connect the devices to WebSocket server to receive real-time data")))
                        {
                            _deviceMapper.Connect();
                            _message = "Connecting...";
                        }
                    }
                    break;

                case DeviceMapperState.DEVICE_LIST_IN_PROGRESS:
                case DeviceMapperState.MAPPING_IN_PROGRESS:
                case DeviceMapperState.CONNECTED:
                    var style = new GUIStyle(GUI.skin.label) { normal = { textColor = Color.yellow } };
                    GUILayout.Label(_message, style);
                    break;

                case DeviceMapperState.ERROR:
                    var errorStyle = new GUIStyle(GUI.skin.label) { normal = { textColor = Color.red } };
                    GUILayout.Label(_message, errorStyle);
                    if (GUILayout.Button(new GUIContent("Retry")))
                    {
                        _deviceMapper.Reset();
                    }
                    break;
            }
        }

        // Display the device controller GUI for the inverse3 controller.
        private void Inverse3ControllerGUI(Inverse3Controller controller)
        {
            // Before the device is assigned, we can select the handedness
            if (!controller.Assigned)
            {
                GUILayout.Label("Inverse3Controller \u2192 <not assigned>", GUILayout.Width(800));

                if (GUILayout.Button($"Filter: {controller.SelectedHandedness}"))
                {
                    switch (controller.SelectedHandedness)
                    {
                        case HandednessType.Left:
                            controller.SelectedHandedness = HandednessType.Right;
                            break;
                        case HandednessType.Right:
                            controller.SelectedHandedness = HandednessType.Any;
                            break;
                        case HandednessType.Any:
                            controller.SelectedHandedness = HandednessType.Left;
                            break;
                    }
                }
            }

            // Once the device is assigned, devices can be swapped
            else
            {
                GUILayout.Label($"Inverse3Controller \u2192 #{controller.DeviceId}.{controller.Handedness}", GUILayout.Width(800));

                // Swap the two inverse3 controllers' assigned devices
                if (GUILayout.Button(new GUIContent("Swap inverse3",
                    "Swap the two inverse3 controller's assigned devices")))
                {
                    _deviceMapper.SwapInverse3();
                    _waitingForVerseGripHandednessConfirm = true;
                }
            }

            // Enable or disable the cursor position update
            var probing= GUILayout.Toggle(controller.IsProbeCursorPosition, "Probe cursor position");
            if (controller.IsReady && probing != controller.IsProbeCursorPosition)
            {
                controller.ProbeCursorPosition(probing);
            }
        }
        private void VerseGripControllerGUI(VerseGripController controller)
        {
            // Before the device is assigned, we can select the VerseGrip type
            if (!controller.Assigned)
            {
                GUILayout.Label("VerseGripController \u2192 <not assigned>", GUILayout.Width(800));
                if (GUILayout.Button($"Filter: {controller.verseGripTypeFilter}"))
                {
                    switch (controller.verseGripTypeFilter)
                    {
                        case VerseGripType.Wired:
                            controller.verseGripTypeFilter = VerseGripType.Wireless;
                            break;
                        case VerseGripType.Wireless:
                            controller.verseGripTypeFilter = VerseGripType.Any;
                            break;
                        case VerseGripType.Any:
                            controller.verseGripTypeFilter = VerseGripType.Wired;
                            break;
                    }
                }
            }
            
            // Once the device is ready, devices can be swapped
            else
            {
                GUILayout.Label($"VerseGripController \u2192 #{controller.DeviceId}.{controller.VerseGripType}", GUILayout.Width(800));

                // Swap the two verse grip controllers' assigned devices
                if (GUILayout.Button("Swap verse grip"))
                {
                    _deviceMapper.SwapVerseGrip();
                    _waitingForVerseGripHandednessConfirm = true;
                }
            }
        }

        // Display the GUI
        private void OnGUI()
        {
            // Show the device mapper state and actions
            GUILayout.BeginArea(new Rect(10, 10, 400, 200), new GUIStyle(GUI.skin.box));
            DeviceMapperGUI();
            GUILayout.Space(10);
            // Show the device list
            DeviceListGUI();
            GUILayout.EndArea();

            // Show the left inverse3 controller
            var leftRect = new Rect(0, Screen.height - 200, 300, 200);
            leftRect.x = 10;
            GUILayout.BeginArea(leftRect, new GUIStyle(GUI.skin.box));
            GUILayout.Label(leftInverse3.gameObject.name, GUILayout.Width(600));

            Inverse3ControllerGUI(leftInverse3);

            GUILayout.Space(10);

            // Show the associated verse grip controller
            var leftVerseGripController = _deviceMapper.GetVerseGripController(leftInverse3);
            VerseGripControllerGUI(leftVerseGripController);
            GUILayout.EndArea();

            // Show the right controller
            var rightRect = new Rect(0, Screen.height - 200, 300, 200);
            rightRect.x = Screen.width - rightRect.width - 10;
            GUILayout.BeginArea(rightRect, new GUIStyle(GUI.skin.box));
            GUILayout.Label(rightInverse3.gameObject.name, GUILayout.Width(600));

            Inverse3ControllerGUI(rightInverse3);

            GUILayout.Space(10);

            // Show the associated verse grip controller
            var rightVerseGripController = _deviceMapper.GetVerseGripController(rightInverse3);
            VerseGripControllerGUI(rightVerseGripController);

            GUILayout.EndArea();
        }
    }
}