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Added support for POV hats with WinMM.

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Reversed vertical axes, so that down is -1 and up is +1.
This commit is contained in:
the_fiddler 2009-03-01 08:44:39 +00:00
parent 1a0c3ff31f
commit 51e2d93e38
2 changed files with 148 additions and 21 deletions
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2
Source/OpenTK/Input/JoystickDevice.cs
View file

@ -163,7 +163,7 @@ namespace OpenTK.Input
: base(id, axes, buttons)
{ }
internal TDetail Details { get { return details; } set { details = value; } }
internal TDetail Details;
}
#endregion

167
Source/OpenTK/Platform/Windows/WinMMJoystick.cs
View file

@ -30,6 +30,8 @@ using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using OpenTK.Input;
using System.Security;
using Microsoft.Win32;
namespace OpenTK.Platform.Windows
{
@ -40,6 +42,10 @@ namespace OpenTK.Platform.Windows
List<JoystickDevice> sticks = new List<JoystickDevice>();
IList<JoystickDevice> sticks_readonly;
static readonly string RegistryJoyConfig = @"Joystick%dConfiguration";
static readonly string RegistryJoyName = @"Joystick%dOEMName";
static readonly string RegstryJoyCurrent = @"CurrentJoystickSettings";
bool disposed;
#endregion
@ -50,13 +56,13 @@ namespace OpenTK.Platform.Windows
{
sticks_readonly = sticks.AsReadOnly();
int number = 0, max_sticks = 25;
while (number < max_sticks)
// WinMM supports up to 16 joysticks.
int number = 0;
while (number < UnsafeNativeMethods.joyGetNumDevs())
{
JoystickDevice<WinMMJoyDetails> stick = OpenJoystick(number++);
if (stick != null)
{
stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons)", number, stick.Axis.Count, stick.Button.Count);
sticks.Add(stick);
}
}
@ -75,21 +81,50 @@ namespace OpenTK.Platform.Windows
if (result != JoystickError.NoError)
return null;
stick = new JoystickDevice<WinMMJoyDetails>(number, caps.NumAxes, caps.NumButtons);
stick.Details = new WinMMJoyDetails(caps.NumAxes);
int num_axes = caps.NumAxes;
if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
num_axes += 2;
stick = new JoystickDevice<WinMMJoyDetails>(number, num_axes, caps.NumButtons);
stick.Details = new WinMMJoyDetails(num_axes);
// Make sure to reverse the vertical axes, so that +1 points up and -1 points down.
// I don't know if this an artifact of my joypad, but RAxis is the second horizontal and
// ZAxis is the second vertical axis here (Saitek P880).
int axis = 0;
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.XMin; stick.Details.Max[axis] = caps.XMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.YMin; stick.Details.Max[axis] = caps.YMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.ZMin; stick.Details.Max[axis] = caps.ZMax; axis++; }
{ stick.Details.Min[axis] = caps.YMax; stick.Details.Max[axis] = caps.YMin; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.RMin; stick.Details.Max[axis] = caps.RMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.ZMax; stick.Details.Max[axis] = caps.ZMin; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.UMin; stick.Details.Max[axis] = caps.UMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.VMin; stick.Details.Max[axis] = caps.VMax; axis++; }
{ stick.Details.Min[axis] = caps.VMax; stick.Details.Max[axis] = caps.VMin; axis++; }
if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
{
stick.Details.PovType = PovType.Exists;
if ((caps.Capabilities & JoystCapsFlags.HasPov4Dir) != 0)
stick.Details.PovType |= PovType.Discrete;
if ((caps.Capabilities & JoystCapsFlags.HasPovContinuous) != 0)
stick.Details.PovType |= PovType.Continuous;
}
// Try to get the device name from the registry. Oh joy!
string key_path = String.Format("{0}\\{1}\\{2}", RegistryJoyConfig, caps.RegKey, RegstryJoyCurrent);
RegistryKey key = Registry.LocalMachine.OpenSubKey(key_path, false);
if (key == null)
key = Registry.CurrentUser.OpenSubKey(key_path, false);
if (key == null)
stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons)", number, stick.Axis.Count, stick.Button.Count);
else
{
key.Close();
}
return stick;
}
@ -117,20 +152,76 @@ namespace OpenTK.Platform.Windows
info.Flags = JoystickFlags.All;
UnsafeNativeMethods.joyGetPosEx(js.Id, ref info);
int num_axes = js.Axis.Count;
if ((js.Details.PovType & PovType.Exists) != 0)
num_axes -= 2; // Because the last two axis are used for POV input.
int axis = 0;
if (axis < js.Axis.Count)
if (axis < num_axes)
{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.XPos, axis)); axis++; }
if (axis < js.Axis.Count)
if (axis < num_axes)
{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.YPos, axis)); axis++; }
if (axis < js.Axis.Count)
if (axis < num_axes)
{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.ZPos, axis)); axis++; }
if (axis < js.Axis.Count)
if (axis < num_axes)
{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.RPos, axis)); axis++; }
if (axis < js.Axis.Count)
if (axis < num_axes)
{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.UPos, axis)); axis++; }
if (axis < js.Axis.Count)
if (axis < num_axes)
{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.VPos, axis)); axis++; }
if ((js.Details.PovType & PovType.Exists) != 0)
{
float x = 0, y = 0;
// A discrete POV returns specific values for left, right, etc.
// A continuous POV returns an integer indicating an angle in degrees * 100, e.g. 18000 == 180.00 degrees.
// The vast majority of joysticks have discrete POVs, so we'll treat all of them as discrete for simplicity.
if ((JoystickPovPosition)info.Pov != JoystickPovPosition.Centered)
{
if (info.Pov > (int)JoystickPovPosition.Left || info.Pov < (int)JoystickPovPosition.Right)
{ y = 1; }
if ((info.Pov > (int)JoystickPovPosition.Forward) && (info.Pov < (int)JoystickPovPosition.Backward))
{ x = 1; }
if ((info.Pov > (int)JoystickPovPosition.Right) && (info.Pov < (int)JoystickPovPosition.Left))
{ y = -1; }
if (info.Pov > (int)JoystickPovPosition.Backward)
{ x = -1; }
}
//if ((js.Details.PovType & PovType.Discrete) != 0)
//{
// if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Centered)
// { x = 0; y = 0; }
// else if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Forward)
// { x = 0; y = -1; }
// else if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Left)
// { x = -1; y = 0; }
// else if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Backward)
// { x = 0; y = 1; }
// else if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Right)
// { x = 1; y = 0; }
//}
//else if ((js.Details.PovType & PovType.Continuous) != 0)
//{
// if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Centered)
// {
// // This approach moves the hat on a circle, not a square as it should.
// float angle = (float)(System.Math.PI * info.Pov / 18000.0 + System.Math.PI / 2);
// x = (float)System.Math.Cos(angle);
// y = (float)System.Math.Sin(angle);
// if (x < 0.001)
// x = 0;
// if (y < 0.001)
// y = 0;
// }
//}
//else
// throw new NotImplementedException("Please post an issue report at http://www.opentk.com/issues");
js.SetAxis((JoystickAxis)axis++, x);
js.SetAxis((JoystickAxis)axis++, y);
}
int button = 0;
while (button < js.Button.Count)
{
@ -195,13 +286,32 @@ namespace OpenTK.Platform.Windows
//MM_InvalidParameter = 11
}
[Flags]
enum JoystCapsFlags
{
HasZ = 0x1,
HasR = 0x2,
HasU = 0x4,
HasV = 0x8,
HasPov = 0x16,
HasPov4Dir = 0x32,
HasPovContinuous = 0x64
}
enum JoystickPovPosition : ushort
{
Centered = 0xFFFF,
Forward = 0,
Right = 9000,
Backward = 18000,
Left = 27000
}
struct JoyCaps
{
public ushort Mid;
public ushort Pid;
public ushort ProductId;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
public string Pname;
public string ProductName;
public int XMin;
public int XMax;
public int YMin;
@ -217,7 +327,7 @@ namespace OpenTK.Platform.Windows
public int UMax;
public int VMin;
public int VMax;
public int Caps;
public JoystCapsFlags Capabilities;
public int MaxAxes;
public int NumAxes;
public int MaxButtons;
@ -261,10 +371,25 @@ namespace OpenTK.Platform.Windows
static class UnsafeNativeMethods
{
[DllImport("Winmm.dll")]
[DllImport("Winmm.dll"), SuppressUnmanagedCodeSecurity]
public static extern JoystickError joyGetDevCaps(int uJoyID, out JoyCaps pjc, int cbjc);
[DllImport("Winmm.dll")]
[DllImport("Winmm.dll"), SuppressUnmanagedCodeSecurity]
public static extern uint joyGetPosEx(int uJoyID, ref JoyInfoEx pji);
[DllImport("Winmm.dll"), SuppressUnmanagedCodeSecurity]
public static extern int joyGetNumDevs();
}
#endregion
#region enum PovType
[Flags]
enum PovType
{
None = 0x0,
Exists = 0x1,
Discrete = 0x2,
Continuous = 0x4
}
#endregion
@ -274,11 +399,13 @@ namespace OpenTK.Platform.Windows
struct WinMMJoyDetails
{
public readonly float[] Min, Max; // Minimum and maximum offset of each axis.
public PovType PovType;
public WinMMJoyDetails(int num_axes)
{
Min = new float[num_axes];
Max = new float[num_axes];
PovType = PovType.None;
}
public float CalculateOffset(float pos, int axis)