private bool TryFetchNode(TransportNodeIdInterop nodeIdInterop, out TransportNode node)
{
int incidentDirectedEdgeCount = NativeTransportApi_GetIncidentDirectedEdgeCountForNode(NativePluginRunner.API, nodeIdInterop);
if (incidentDirectedEdgeCount < 0)
{
node = TransportNode.MakeEmpty();
return(false);
}
var incidentDirectedEdgeIdInteropBuffer = new TransportDirectedEdgeIdInterop[incidentDirectedEdgeCount];
var incidentDirectedEdgeIdInteropBufferGCHandle = GCHandle.Alloc(incidentDirectedEdgeIdInteropBuffer, GCHandleType.Pinned);
var incidentDirectedEdgeIdInteropPtr = incidentDirectedEdgeIdInteropBufferGCHandle.AddrOfPinnedObject();
var nodeInterop = new TransportNodeInterop()
{
Id = nodeIdInterop,
IncidentDirectedEdgeIdsSize = incidentDirectedEdgeCount,
IncidentDirectedEdgeIds = incidentDirectedEdgeIdInteropPtr
};
bool success = NativeTransportApi_TryGetNode(NativePluginRunner.API, ref nodeInterop);
if (!success)
{
node = TransportNode.MakeEmpty();
return(false);
}
var incidedDirectedEdgeIds = incidentDirectedEdgeIdInteropBuffer.Select(_x => _x.FromInterop()).ToList();
node = new TransportNode(
nodeInterop.Id.FromInterop(),
nodeInterop.Point,
incidedDirectedEdgeIds
);
incidentDirectedEdgeIdInteropBufferGCHandle.Free();
return(true);
}
private static extern bool NativeTransportApi_TryGetNode(IntPtr ptr, ref TransportNodeInterop nodeInterop);
