private bool TryFetchWay(TransportWayIdInterop wayIdInterop, out TransportWay way)
{
var wayInterop = new TransportWayInterop()
{
Id = wayIdInterop
};
bool success = NativeTransportApi_TryGetWayBufferSizes(NativePluginRunner.API, ref wayInterop);
if (!success)
{
way = TransportWay.MakeEmpty();
return(false);
}
var centerLinePointsBuffer = new DoubleVector3[wayInterop.CenterLinePointsBufferSize];
var centerLinePointsBufferGCHandle = GCHandle.Alloc(centerLinePointsBuffer, GCHandleType.Pinned);
wayInterop.CenterLinePoints = centerLinePointsBufferGCHandle.AddrOfPinnedObject();
var centerLineSplineParamsBuffer = new double[wayInterop.CenterLineSplineParamsBufferSize];
var centerLineSplineParamsBufferGCHandle = GCHandle.Alloc(centerLineSplineParamsBuffer, GCHandleType.Pinned);
wayInterop.CenterLineSplineParams = centerLineSplineParamsBufferGCHandle.AddrOfPinnedObject();
var classificationBuffer = new byte[wayInterop.ClassificationBufferSize];
var classificationBufferGCHandle = GCHandle.Alloc(classificationBuffer, GCHandleType.Pinned);
wayInterop.Classification = classificationBufferGCHandle.AddrOfPinnedObject();
success = NativeTransportApi_TryGetWay(NativePluginRunner.API, ref wayInterop);
if (!success)
{
way = TransportWay.MakeEmpty();
return(false);
}
var classification = Marshal.PtrToStringAnsi(wayInterop.Classification, wayInterop.ClassificationBufferSize - 1);
way = new TransportWay(
wayInterop.Id.FromInterop(),
centerLinePointsBuffer,
centerLineSplineParamsBuffer,
wayInterop.LengthMeters,
wayInterop.HalfWidthMeters,
wayInterop.WayDirection,
classification,
wayInterop.AverageSpeedKph,
wayInterop.ApproximateSpeedLimitKph
);
centerLinePointsBufferGCHandle.Free();
centerLineSplineParamsBufferGCHandle.Free();
classificationBufferGCHandle.Free();
return(true);
}
private static extern bool NativeTransportApi_TryGetWay(IntPtr ptr, ref TransportWayInterop wayInterop);