Qt Location send signal when a defined line is crossed

[Markus Ippy]

Hi

I am trying to make a QML based Race track Lap timer via GPS.
I want to let the user define a line from coordinate A to coordinate B ( the start / finish line ) ,and send a signal when the line is crossed . Unfortunately i can't find a way of doing this .
I made a quick illustration . The red line would be the defined by the user bewteen coordinate A and B . the Blue Dot is the Cars location .

Could someone point me in the right direction ?

[SGaist]

Hi,

I haven't used it yet but QGeoAreaMonitorSource might be what you are looking for.

Hope it helps