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[Mac] Implemented joystick axis movement

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This commit is contained in:
thefiddler 2014-01-05 03:54:53 +01:00
parent 92635b3f35
commit fad42994e1
1 changed files with 116 additions and 11 deletions
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127
Source/OpenTK/Platform/MacOS/HIDInput.cs
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@ -488,20 +488,119 @@ namespace OpenTK.Platform.MacOS
//JoystickDevices[device].Details.Capabilities.SetIsConnected(false);
}
static MacJoystick UpdateJoystick(MacJoystick state, IOHIDValueRef val)
static MacJoystick UpdateJoystick(MacJoystick joy, IOHIDValueRef val)
{
//IOHIDElementRef elem = NativeMethods.IOHIDValueGetElement(val);
//int v_int = NativeMethods.IOHIDValueGetIntegerValue(val).ToInt32();
//HIDPage page = NativeMethods.IOHIDElementGetUsagePage(elem);
//int usage = NativeMethods.IOHIDElementGetUsage(elem);
IOHIDElementRef elem = NativeMethods.IOHIDValueGetElement(val);
HIDPage page = NativeMethods.IOHIDElementGetUsagePage(elem);
int usage = NativeMethods.IOHIDElementGetUsage(elem);
//switch (page)
//{
// case HIDPage.GenericDesktop:
// break;
//}
switch (page)
{
case HIDPage.GenericDesktop:
switch ((HIDUsageGD)usage)
{
case HIDUsageGD.X:
case HIDUsageGD.Y:
case HIDUsageGD.Z:
case HIDUsageGD.Rx:
case HIDUsageGD.Ry:
case HIDUsageGD.Rz:
case HIDUsageGD.Slider:
case HIDUsageGD.Dial:
case HIDUsageGD.Wheel:
short offset = GetJoystickAxis(val, elem);
joy.Details.State.SetAxis(TranslateJoystickAxis(usage), offset);
break;
case HIDUsageGD.Hatswitch:
break;
}
break;
case HIDPage.Simulation:
switch ((HIDUsageSim)usage)
{
case HIDUsageSim.Rudder:
case HIDUsageSim.Throttle:
short offset = GetJoystickAxis(val, elem);
joy.Details.State.SetAxis(TranslateJoystickAxis(usage), offset);
break;
}
break;
case HIDPage.Button:
{
bool pressed = GetJoystickButton(val, elem);
joy.Details.State.SetButton(TranslateJoystickButton(usage), value);
}
break;
}
return joy;
}
static short GetJoystickAxis(IOHIDValueRef val, IOHIDElementRef element)
{
int max = NativeMethods.IOHIDElementGetLogicalMax(element).ToInt32();
int min = NativeMethods.IOHIDElementGetLogicalMin(element).ToInt32();
int offset = NativeMethods.IOHIDValueGetIntegerValue(val).ToInt32();
if (offset < min)
offset = min;
if (offset > max)
offset = max;
const int range = short.MaxValue - short.MinValue + 1;
const int half_range = short.MaxValue + 1;
return (short)((offset - min) * range / (max - min) + half_range);
}
static JoystickAxis TranslateJoystickAxis(int usage)
{
switch (usage)
{
case (int)HIDUsageGD.X:
return JoystickAxis.Axis0;
case (int)HIDUsageGD.Y:
return JoystickAxis.Axis1;
case (int)HIDUsageGD.Z:
return JoystickAxis.Axis2;
case (int)HIDUsageGD.Rz:
return JoystickAxis.Axis3;
case (int)HIDUsageGD.Rx:
return JoystickAxis.Axis4;
case (int)HIDUsageGD.Ry:
return JoystickAxis.Axis5;
case (int)HIDUsageGD.Slider:
return JoystickAxis.Axis6;
case (int)HIDUsageGD.Dial:
return JoystickAxis.Axis7;
case (int)HIDUsageGD.Wheel:
return JoystickAxis.Axis8;
case (int)HIDUsageSim.Rudder:
return JoystickAxis.Axis9;
case (int)HIDUsageSim.Throttle:
return JoystickAxis.Axis10;
default:
Debug.Print("[Mac] Unknown axis with HID usage {0}", usage);
return 0;
}
}
static bool GetJoystickButton(IOHIDValueRef val, IOHIDElementRef element)
{
// Todo: analogue buttons are transformed to digital
int value = NativeMethods.IOHIDValueGetIntegerValue(val).ToInt32();
return value >= 1;
}
static JoystickButton TranslateJoystickButton(int usage)
{
return state;
}
#endregion
@ -752,6 +851,12 @@ namespace OpenTK.Platform.MacOS
[DllImport(hid)]
public static extern HIDPage IOHIDElementGetUsagePage(IOHIDElementRef elem);
[DllImport(hid)]
public static extern CFIndex IOHIDElementGetLogicalMax(IOHIDElementRef element);
[DllImport(hid)]
public static extern CFIndex IOHIDElementGetLogicalMin(IOHIDElementRef element);
public delegate void IOHIDDeviceCallback(IntPtr ctx, IOReturn res, IntPtr sender, IOHIDDeviceRef device);
public delegate void IOHIDValueCallback(IntPtr ctx, IOReturn res, IntPtr sender, IOHIDValueRef val);
}