private IList <TransportWay> BuildWaysForCell(
TransportNetworkType transportNetworkType,
TransportCellKey cellKey
)
{
var cellKeyInterop = cellKey.ToInterop();
int wayCount = NativeTransportApi_GetWayCountForNetworkInCell(NativePluginRunner.API, transportNetworkType, cellKeyInterop);
if (wayCount <= 0)
{
return(new List <TransportWay>());
}
// alloc and pin buffers
var wayIdInteropBuffer = new TransportWayIdInterop[wayCount];
var wayIdInteropBufferGCHandle = GCHandle.Alloc(wayIdInteropBuffer, GCHandleType.Pinned);
var wayIdInteropBufferPtr = wayIdInteropBufferGCHandle.AddrOfPinnedObject();
// populate buffers from C++ api
var waySuccess = NativeTransportApi_TryGetWayIdsForNetworkInCell(NativePluginRunner.API, transportNetworkType, cellKeyInterop, wayCount, wayIdInteropBufferPtr);
if (!waySuccess)
{
throw new System.ArgumentOutOfRangeException("incorrect buffer size passed for way ids");
}
var ways = FetchWays(wayIdInteropBuffer);
// free buffers
wayIdInteropBufferGCHandle.Free();
return(ways);
}
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 IList <TransportWayIdInterop> FetchWayIdsForNetworkInCell(TransportNetworkType transportNetwork, MortonKeyInterop cellKeyInterop)
{
int wayCount = NativeTransportApi_GetWayCountForNetworkInCell(NativePluginRunner.API, transportNetwork, cellKeyInterop);
if (wayCount <= 0)
{
return(new List <TransportWayIdInterop>());
}
var wayIdInteropBuffer = new TransportWayIdInterop[wayCount];
var wayIdInteropBufferGCHandle = GCHandle.Alloc(wayIdInteropBuffer, GCHandleType.Pinned);
var wayIdInteropBufferPtr = wayIdInteropBufferGCHandle.AddrOfPinnedObject();
var waySuccess = NativeTransportApi_TryGetWayIdsForNetworkInCell(NativePluginRunner.API, transportNetwork, cellKeyInterop, wayCount, wayIdInteropBufferPtr);
if (!waySuccess)
{
throw new System.ArgumentOutOfRangeException("incorrect buffer size passed for way ids");
}
wayIdInteropBufferGCHandle.Free();
return(wayIdInteropBuffer);
}