LinearVelocity::LinearVelocity(const Distance* const newDistance, const Time* const newTime)
{
STANDARD_CONSTRUCTOR()
distance = 1;
time = 1;
//Set checks to false
bool okDistance = false;
bool okTime = false;
//Check and convert the distance to meters
if (newDistance != nullptr)
{
LCreal finalDistance = Meters::convertStatic( *newDistance );
okDistance = setMeters(finalDistance);
}
//Check and convert the time to seconds
if (newTime != nullptr)
{
LCreal finaltime = Seconds::convertStatic( *newTime );
okTime = setSeconds(finaltime);
}
//Check that both were set correctly - if not give error
if ( !okTime || !okDistance )
{
//Give error if something was not set correctly:
std::cerr << "Distance or Time not set correctly - new LinearVelocity Object bad." << std::endl;
}
}
void Altitude::setStdAltitude(const Altitude& MSLAltitude, int QNH)
{
// adapted from Cumulus GpsNmea::calcStdAltitude
int qnhDiff = 1013 - QNH;
if( qnhDiff != 0 )
{
// Calculate altitude correction in meters from pressure difference.
// The common approach is to expect a pressure difference of 1 hPa per
// 30ft until 18.000ft. 30ft are 9.1437m
int delta = (int) rint( qnhDiff * 9.1437 );
setMeters( MSLAltitude.getMeters() + delta );
}
else
{
setMeters(MSLAltitude.getMeters());
}
}
//---------------------------------------------------------------------
// setSlotDistance()
//---------------------------------------------------------------------
bool LinearVelocity::setSlotDistance(const Distance* const msg)
{
bool ok = false;
//Try to convert Number to a distance
if(msg != nullptr)
{
LCreal finalNumber = Meters::convertStatic(*msg);
ok = setMeters(finalNumber);
}
return ok;
}
//---------------------------------------------------------------------
// setMetersPerSecond()
//---------------------------------------------------------------------
bool LinearVelocity::setMetersPerSecond(const LCreal newLinearVelocity)
{
//Set distance and time - units in meters per second -> num = input; den = 1
bool ok1 = setMeters(newLinearVelocity);
bool ok2 = setSeconds(1);
//Check both values for ok:
ok1 = (ok1)&&(ok2);
return ok1;
}
