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/********************************************************************************
* FaceTrackNoIR This program is a private project of the some enthusiastic *
* gamers from Holland, who don't like to pay for *
* head-tracking. *
* *
* Copyright (C) 2010 Wim Vriend (Developing) *
* Ron Hendriks (Researching and Testing) *
* *
* Homepage *
* *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 3 of the License, or (at your *
* option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along *
* with this program; if not, see <http://www.gnu.org/licenses/>. *
* *
* PPJoyServer PPJoyServer is the Class, that communicates headpose-data *
* to the Virtual Joystick, created by Deon van der Westhuysen.*
********************************************************************************/
#include <QtGui>
#include <QtNetwork>
#include "PPJoyServer.h"
#include "Tracker.h"
#include <Winsock.h>
long PPJoyServer::PPJoyCorrection = 1470;
long PPJoyServer::analogDefault = (PPJOY_AXIS_MIN+PPJOY_AXIS_MAX)/2 - PPJoyServer::PPJoyCorrection;
static const char* DevName = "\\\\.\\PPJoyIOCTL1";
/** constructor **/
PPJoyServer::PPJoyServer( Tracker *parent ) {
// Save the parent
headTracker = parent;
// Create events
m_StopThread = CreateEvent(0, TRUE, FALSE, 0);
m_WaitThread = CreateEvent(0, TRUE, FALSE, 0);
// Initialize arrays
for (int i = 0;i < 3;i++) {
centerPos[i] = 0;
centerRot[i] = 0;
}
/* Open a handle to the control device for the first virtual joystick. */
/* Virtual joystick devices are names PPJoyIOCTL1 to PPJoyIOCTL16. */
h = CreateFileA((LPCSTR) DevName,GENERIC_WRITE,FILE_SHARE_WRITE,NULL,OPEN_EXISTING,0,NULL);
/* Make sure we could open the device! */
if (h == INVALID_HANDLE_VALUE)
{
QMessageBox::critical(0, "Connection Failed", QString("FaceTrackNoIR failed to connect to Virtual Joystick.\nCheck if it was properly installed!"));
return;
}
}
/** destructor **/
PPJoyServer::~PPJoyServer() {
// Trigger thread to stop
::SetEvent(m_StopThread);
// Wait until thread finished
::WaitForSingleObject(m_WaitThread, INFINITE);
// Close handles
::CloseHandle(m_StopThread);
::CloseHandle(m_WaitThread);
//
// Free the Virtual Joystick
//
CloseHandle(h);
//terminates the QThread and waits for finishing the QThread
terminate();
wait();
}
/** QThread run @override **/
void PPJoyServer::run() {
/* Initialise the IOCTL data structure */
JoyState.Signature= JOYSTICK_STATE_V1;
JoyState.NumAnalog= NUM_ANALOG; // Number of analog values
Analog= JoyState.Analog; // Keep a pointer to the analog array for easy updating
Digital= JoyState.Digital; // Keep a pointer to the digital array for easy updating
JoyState.NumDigital= NUM_DIGITAL; // Number of digital values
/* Make sure we could open the device! */
/* MessageBox in run() does not work! (runtime error...)*/
if (h == INVALID_HANDLE_VALUE) {
return;
}
forever
{
// Check event for stop thread
if(::WaitForSingleObject(m_StopThread, 0) == WAIT_OBJECT_0) {
// Set event
::SetEvent(m_WaitThread);
return;
}
// The effective angle for faceTracking will be < 90 degrees, so we assume a smaller range here
Analog[0] = scale2AnalogLimits( virtRotX, -50.0f, 50.0f ); // Pitch
qDebug() << "PPJoyServer says: Pitch =" << Analog[0] << " VirtRotX =" << virtRotX ;
Analog[1] = scale2AnalogLimits( virtRotY, -50.0f, 50.0f ); // Yaw
Analog[2] = scale2AnalogLimits( virtRotZ, -50.0f, 50.0f ); // Roll
// The effective movement for faceTracking will be < 50 cm, so we assume a smaller range here
Analog[3] = scale2AnalogLimits( virtPosX, -40.0f, 40.0f ); // X
Analog[5] = scale2AnalogLimits( virtPosY, -40.0f, 40.0f ); // Y (5?)
Analog[6] = scale2AnalogLimits( virtPosZ, -40.0f, 40.0f ); // Z (6?)
checkAnalogLimits();
/* Send request to PPJoy for processing. */
/* Currently there is no Return Code from PPJoy, this may be added at a */
/* later stage. So we pass a 0 byte output buffer. */
if (!DeviceIoControl( h, IOCTL_PPORTJOY_SET_STATE, &JoyState, sizeof(JoyState), NULL, 0, &RetSize, NULL))
{
return;
}
// just for lower cpu load
msleep(15);
yieldCurrentThread();
}
}
//
// Limit the Joystick values
//
void PPJoyServer::checkAnalogLimits() {
for (int i = 0;i < NUM_ANALOG;i++) {
if (Analog[i]>PPJOY_AXIS_MAX) {
Analog[i]=PPJOY_AXIS_MAX;
}
else if (Analog[i]<PPJOY_AXIS_MIN) {
Analog[i]=PPJOY_AXIS_MIN;
}
}
}
//
// Scale the measured value to the Joystick values
//
long PPJoyServer::scale2AnalogLimits( float x, float min_x, float max_x ) {
double y;
y = ((PPJOY_AXIS_MAX - PPJOY_AXIS_MIN)/(max_x - min_x)) * x + ((PPJOY_AXIS_MAX - PPJOY_AXIS_MIN)/2) + PPJOY_AXIS_MIN;
qDebug() << "scale2AnalogLimits says: long_y =" << y;
return (long) y;
}
//END
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