void updateDisplay(void)
{
int gyroX = 0,gyroY = 0;
IEE_HeadsetGetGyroDelta(0,&gyroX,&gyroY);
xmax += gyroX;
ymax += gyroY;
if( outOfBound )
{
if( preX != gyroX && preY != gyroY )
{
xmax = currX;
ymax = currY;
}
}
double val = sqrt((float)(xmax*xmax + ymax*ymax));
std::cout << "xmax : " << xmax << " ; ymax : " << ymax
<< std::endl;
if( val >= maxRadius )
{
changeXY(1);
outOfBound = true;
preX = gyroX;
preY = gyroY;
}
else
{
outOfBound = false;
if(oldXVal == gyroX && oldYVal == gyroY)
{
++count;
if( count > 10 )
{
changeXY(0);
}
}
else
{
count = 0;
currX = xmax;
currY = ymax;
oldXVal = gyroX;
oldYVal = gyroY;
}
}
#ifdef _WIN32
Sleep(15);
#endif
#ifdef __linux__
sleep(1);
#endif
glutPostRedisplay();
}
/*
* Request double buffer display mode.
* Register mouse input callback functions
*/
int main(int argc, char** argv)
{
EmoEngineEventHandle hEvent = IEE_EmoEngineEventCreate();
EmoStateHandle eState = IEE_EmoStateCreate();
unsigned int userID = -1;
int state = 0;
bool ready = false;
if (IEE_EngineConnect() != EDK_OK) {
std::cout << "Emotiv Driver start up failed.";
return -1;
}
std::cout << "Please make sure your headset is on and don't move your head.";
std::cout << std::endl;
while(true)
{
state = IEE_EngineGetNextEvent(hEvent);
if (state == EDK_OK)
{
IEE_Event_t eventType = IEE_EmoEngineEventGetType(hEvent);
IEE_EmoEngineEventGetUserId(hEvent, &userID);
if (eventType == IEE_UserAdded) {
std::cout << "User added" << std::endl << std::endl;
userID = 0;
ready = true;
}
}
if(!ready) continue;
int gyroX = 0, gyroY = 0;
int err = IEE_HeadsetGetGyroDelta(userID, &gyroX, &gyroY);
if (err == EDK_OK){
std::cout << std::endl;
std::cout << "You can move your head now." << std::endl;
#ifdef _WIN32
Sleep(1000);
#endif
#if __linux__ || __APPLE__
usleep(10000);
#endif
break;
}else if (err == EDK_GYRO_NOT_CALIBRATED){
std::cout << "Gyro is not calibrated. Please stay still." << std::endl;
}else if (err == EDK_CANNOT_ACQUIRE_DATA){
std::cout << "Cannot acquire data" << std::endl;
}else{
std::cout << "No headset is connected" << std::endl;
}
#ifdef _WIN32
Sleep(100);
#endif
#if __linux__ || __APPLE__
usleep(10000);
#endif
}
#ifdef _WIN32
globalElapsed = GetTickCount();
#endif
#if __linux__|| __APPLE__
globalElapsed = ( unsigned long ) GetTickCount();
#endif
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize (650, 650);
glutInitWindowPosition (100, 100);
glutCreateWindow (argv[0]);
init ();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutIdleFunc(updateDisplay);
glutMainLoop();
IEE_EngineDisconnect();
IEE_EmoStateFree(eState);
IEE_EmoEngineEventFree(hEvent);
return 0;
}
