/// <summary>
/// Refreshes the alarm drawing with the latest information.
/// </summary>
public void UpdateAlarms()
{
// Copy the alarms since CurrentAlarms are modified in VesselPresenter asynchronously
var alarms = new Cker.Simulator.OnAlarmEventArgs[vesselPresenter.CurrentAlarms.Count];
vesselPresenter.CurrentAlarms.CopyTo(alarms);
foreach (var alarm in alarms)
{
DrawAlarm(alarm.type, alarm.first);
DrawAlarm(alarm.type, alarm.second);
// Draw line connecting the two vessels, only if at least one of the vessel is displayed.
if (vesselPresenter.DisplayedVessels.Contains(alarm.first) || vesselPresenter.DisplayedVessels.Contains(alarm.second))
{
Line alarmLine = new Line();
alarmLine.X1 = ToPixelX(alarm.first.X);
alarmLine.Y1 = ToPixelY(alarm.first.Y);
alarmLine.X2 = ToPixelX(alarm.second.X);
alarmLine.Y2 = ToPixelY(alarm.second.Y);
alarmLine.Opacity = 0.75;
alarmLine.StrokeThickness = 1.0;
alarmLine.Stroke = new SolidColorBrush(alarm.type == Cker.Simulator.AlarmType.Low ? Colors.Yellow : Colors.Red);
canvas.Children.Add(alarmLine);
}
}
}
private void OnSimulationAlarmEvent(Cker.Simulator.OnAlarmEventArgs alarm)
{
CurrentAlarms.Add(alarm);
// Keep only the high risk alarm if there is both a low and a high risk alarm for a vessel.
if (alarm.type == Simulator.AlarmType.High)
{
CurrentAlarms.RemoveAll(a1 => a1.type == Simulator.AlarmType.Low && IsAlarmVesselShared(a1, alarm));
}
}
// helper to check whether two alarms share the same vessel.
private bool IsAlarmVesselShared(Cker.Simulator.OnAlarmEventArgs a1, Cker.Simulator.OnAlarmEventArgs a2)
{
return(a1.first == a2.first || a1.first == a2.second || a1.second == a2.first || a1.second == a2.second);
}
