Rewrite event system using delegates and threads
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b48f5b33ad
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35
Program.cs
35
Program.cs
@ -1,20 +1,41 @@
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using System;
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using spnavwrapper;
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using System;
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namespace spnavcsharpwrapper
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namespace SpaceNavWrapper
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{
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class Program
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{
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static void Main(string[] args)
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{
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SpaceNav.Instance.Threshold = 5;
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SpaceNav.Instance.Sensitivity = 0.1;
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//spnavwrapper.SpaceNav.Instance.Threshold = 5;
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//spnavwrapper.SpaceNav.Instance.Sensitivity = 0.1;
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//for (; ; )
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//{
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// var ev = spnavwrapper.SpaceNav.Instance.WaitEvent(100);
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// Console.WriteLine(ev);
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//}
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SpaceNavDriver navDriver = new SpaceNavDriver();
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navDriver.InitDevice();
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navDriver.Button += OnButton;
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navDriver.Motion += OnMotion;
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Console.CancelKeyPress += delegate {
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navDriver.Dispose();
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};
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for (; ; )
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{
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var ev = SpaceNav.Instance.WaitEvent(100);
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Console.WriteLine(ev);
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}
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}
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private static void OnMotion(object sender, MotionEventArgs e)
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{
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Console.WriteLine(e);
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}
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private static void OnButton(object sender, EventArgs e)
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{
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Console.WriteLine("Button pressed");
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}
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}
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}
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259
SpaceNav.cs
259
SpaceNav.cs
@ -1,176 +1,147 @@
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using System;
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using System.Runtime.InteropServices;
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using System.Threading;
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namespace spnavwrapper
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namespace SpaceNavWrapper
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{
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public sealed class SpaceNav : IDisposable
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{
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public class SpaceNavDriver : IDisposable
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{
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const string DLL_NAME = "spnavhdi";
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#region Constants
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private const int SPNAV_EVENT_MOTION = 1;
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private const int SPNAV_EVENT_BUTTON = 2;
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private const ushort SPNAV_VENDOR_ID = 0x046d;
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private const ushort SPNAV_PRODUCT_ID = 0x0c627;
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#endregion
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#region Constants
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private const int SPNAV_EVENT_MOTION = 1;
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private const int SPNAV_EVENT_BUTTON = 2;
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private const ushort SPNAV_VENDOR_ID = 0x046d;
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private const ushort SPNAV_PRODUCT_ID = 0x0c627;
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#endregion
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private double _sensitivity = 1.0;
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private int _threshold = 5;
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private static SpaceNav instance;
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public event EventHandler<MotionEventArgs> Motion;
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public event EventHandler<EventArgs> Button;
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private Thread eventThread;
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private bool deviceReady;
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private double _sensitivity = 1.0;
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private int _threshold = 5;
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private bool isDisposed;
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#region Structures
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private struct SpNavEventMotion
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{
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public int type;
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public int x, y, z;
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public int rx, ry, rz;
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public uint period;
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public IntPtr data;
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}
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{
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public int type;
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public int x, y, z;
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public int rx, ry, rz;
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public uint period;
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public IntPtr data;
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}
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private struct SpNavEventButton
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{
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public int type;
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public int press;
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public int bnum;
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}
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private struct SpNavEventButton
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{
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public int type;
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public int press;
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public int bnum;
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}
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[StructLayout(LayoutKind.Explicit)]
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private struct SpNavEvent
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{
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[FieldOffset(0)] public int type;
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[FieldOffset(0)] public SpNavEventMotion motion;
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[FieldOffset(0)] public SpNavEventButton button;
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}
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#endregion
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#region DLL Imports
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[DllImport(DLL_NAME)]
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private static extern int spnav_open(ushort vendor_id, ushort product_id);
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[DllImport(DLL_NAME)]
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private static extern int spnav_close();
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[DllImport(DLL_NAME)]
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private static extern int spnav_wait_event(ref SpNavEvent ev);
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[DllImport(DLL_NAME)]
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private static extern int spnav_wait_event_timeout(ref SpNavEvent ev, int timeout);
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[DllImport(DLL_NAME)]
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private static extern int spnav_sensitivity(double sens);
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[DllImport(DLL_NAME)]
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private static extern int spnav_deadzone(int threshold);
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#endregion
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private SpaceNav()
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{
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// TODO : handle retcode
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[StructLayout(LayoutKind.Explicit)]
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private struct SpNavEvent
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{
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[FieldOffset(0)] public int type;
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[FieldOffset(0)] public SpNavEventMotion motion;
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[FieldOffset(0)] public SpNavEventButton button;
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}
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#endregion
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#region DLL Imports
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[DllImport(DLL_NAME)]
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private static extern int spnav_open(ushort vendor_id, ushort product_id);
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[DllImport(DLL_NAME)]
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private static extern int spnav_close();
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[DllImport(DLL_NAME)]
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private static extern int spnav_wait_event(ref SpNavEvent ev);
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[DllImport(DLL_NAME)]
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private static extern int spnav_wait_event_timeout(ref SpNavEvent ev, int timeout);
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[DllImport(DLL_NAME)]
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private static extern int spnav_sensitivity(double sens);
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[DllImport(DLL_NAME)]
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private static extern int spnav_deadzone(int threshold);
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#endregion
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public SpaceNavDriver()
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{
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eventThread = new Thread(HandleEvents)
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{
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IsBackground = true,
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Name = "3Dconnexion-Event-Dispatcher"
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};
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eventThread.Start();
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}
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public void InitDevice()
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{
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spnav_open(SPNAV_VENDOR_ID, SPNAV_PRODUCT_ID);
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}
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spnav_deadzone(5);
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deviceReady = true;
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}
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#region IDisposable Support
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private bool disposedValue = false; // To detect redundant calls
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private void Dispose(bool disposing)
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{
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if (!disposedValue)
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{
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// Free unmanaged resources
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spnav_close();
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disposedValue = true;
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}
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}
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~SpaceNav()
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{
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// Do not change this code. Put cleanup code in Dispose(bool disposing) above.
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Dispose(false);
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}
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// This code added to correctly implement the disposable pattern.
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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#endregion
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#region Methods
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public static SpaceNav Instance
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{
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get
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{
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if (instance == null)
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{
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instance = new SpaceNav();
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}
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return instance;
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}
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}
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public void CloseDevice()
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{
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spnav_close();
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instance = null;
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}
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public SpaceNavEvent WaitEvent()
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{
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SpNavEvent sev = new SpNavEvent();
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spnav_wait_event(ref sev);
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switch (sev.type)
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{
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case SPNAV_EVENT_BUTTON:
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return new SpaceNavButtonEvent(Convert.ToBoolean(sev.button.press), sev.button.bnum);
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case SPNAV_EVENT_MOTION:
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var ev = sev.motion;
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return new SpaceNavMotionEvent(ev.x, ev.y, ev.z, ev.rx, ev.ry, ev.rz);
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default:
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return null;
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}
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}
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public SpaceNavEvent WaitEvent(int milliseconds)
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{
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SpNavEvent sev = new SpNavEvent();
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int ev_type = spnav_wait_event_timeout(ref sev, milliseconds);
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switch (ev_type)
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{
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case SPNAV_EVENT_BUTTON:
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return new SpaceNavButtonEvent(Convert.ToBoolean(sev.button.press), sev.button.bnum);
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case SPNAV_EVENT_MOTION:
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var ev = sev.motion;
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return new SpaceNavMotionEvent(ev.x, ev.y, ev.z, ev.rx, ev.ry, ev.rz);
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default:
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return null;
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}
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private void HandleEvents(object obj)
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{
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// Block while the device isn't ready
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while (!deviceReady) {}
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Console.WriteLine("Device ready !");
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while (!isDisposed)
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{
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SpNavEvent sev = new SpNavEvent();
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int ev_type = spnav_wait_event(ref sev);
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Console.WriteLine("Event type : {0}", sev.type);
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switch (ev_type)
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{
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case SPNAV_EVENT_BUTTON:
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//return new SpaceNavButtonEvent(Convert.ToBoolean(sev.button.press), sev.button.bnum);
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Button(this, new EventArgs());
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break;
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case SPNAV_EVENT_MOTION:
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var ev = sev.motion;
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Motion(this, new MotionEventArgs(ev.x, ev.y, ev.z, ev.rx, ev.ry, ev.rz));
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break;
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}
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}
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}
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public double Sensitivity
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{
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get
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{
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return _sensitivity;
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}
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get => _sensitivity;
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set
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{
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// TODO : handle retcode
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spnav_sensitivity(value);
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_sensitivity = value;
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spnav_sensitivity(value);
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}
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}
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public int Threshold
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{
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get
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{
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return _threshold;
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}
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get => _threshold;
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set
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{
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// TODO : handle retcode
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spnav_deadzone(value);
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_threshold = value;
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spnav_deadzone(value);
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}
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}
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#endregion
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public void Dispose()
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{
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if (!isDisposed)
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{
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CloseDevice();
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Button = null;
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Motion = null;
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}
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isDisposed = true;
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}
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private void CloseDevice()
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{
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// TODO : handle retcode and errors
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spnav_close();
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}
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}
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}
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@ -1,49 +1,37 @@
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namespace spnavwrapper
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using System;
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namespace SpaceNavWrapper
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{
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public abstract class SpaceNavEvent
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public class MotionEventArgs : EventArgs
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{
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}
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public class SpaceNavButtonEvent : SpaceNavEvent
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{
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public bool Pressed { get; }
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public int Button { get; }
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public SpaceNavButtonEvent(bool pressed, int button)
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{
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Pressed = pressed;
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Button = button;
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}
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public override string ToString()
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{
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return "pressed=" + Pressed + " button=" + Button;
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}
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}
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public class SpaceNavMotionEvent : SpaceNavEvent
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{
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public int X { get; }
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public int Y { get; }
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public int Z { get; }
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public int Rx { get; }
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public int Ry { get; }
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public int Rz { get; }
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public SpaceNavMotionEvent(int x, int y, int z, int rx, int ry, int rz)
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{
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X = x;
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Y = y;
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Z = z;
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Rx = rx;
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Ry = ry;
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Rz = rz;
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}
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public readonly int X, Y, Z;
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public readonly int Rx, Ry, Rz;
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public MotionEventArgs(int x, int y, int z, int rx, int ry, int rz)
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{
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X = x;
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Y = y;
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Z = z;
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Rx = rx;
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Ry = ry;
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Rz = rz;
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}
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public override string ToString()
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{
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return "x=" + X + " y=" + Y + " z=" + Z +
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" rx=" + Rz + " ry=" + Ry + " rz=" + Rz;
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}
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}
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public class ButtonEventArgs : EventArgs
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{
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public readonly int button;
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public readonly bool pressed;
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public override string ToString()
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{
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return string.Format("[ButtonEventArgs: button={0}, pressed={1}]", button, pressed);
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}
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}
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}
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