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();
}
// Given a string, compute recursively( no loops ) a new string where all the lowercase 'x' chars have been changed to 'y' chars.
string changeXY( string str )
{
if( str.empty() )
return str;
string c = string( 1, str.at( str.length() - 1 ) );
return changeXY( str.substr( 0, str.length() - 1 ) ) + ( c == "x" ? "y" : c );
}
DWORD WINAPI funThread(LPVOID tParam)
{
PMYRECT t = (PMYRECT)tParam;
while (true)
{
changeXY(t);
InvalidateRect(t->hWnd, NULL, TRUE);
Sleep(t->sleep);
}
return 0;
}