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MapPolyline slow repaint problem



  • Hi. I'm creating navigation app. I'm drawing route that was already traveled with one color and route to travel with another one. I have problem that while navigation marker is moving fluently route is drawing with some delay. I'm updating polyline point on my navigation marker coordinate change:

       Connections {
                enabled: navigation.running
                target: naviArrowItem
    
                onCoordinateChanged: {
                    routeBefore.replaceCoordinate(routeBefore.pathLength()-1,target.coordinate)
                    routeToGo.replaceCoordinate(0,target.coordinate)
                    RideSimulationModel.updateCoordinate(target.coordinate)
                }
            }
    

    When replacing polyline with MapCircle there is no problem with latency (circle coordinate change is instant).
    Maybe somebody know how to deal with this issue?


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