/// <summary>
/// This is the method that actually does the work.
/// </summary>
/// <param name="DA">The DA object can be used to retrieve data from input parameters and
/// to store data in output parameters.</param>
protected override void SolveInstance(IGH_DataAccess DA)
{
IntPtr topoData = IntPtr.Zero;
if (!DA.GetData(0, ref topoData))
{
return;
}
List <Polyline> polylines = new List <Polyline>();
IntPtr baseMesh2D = TopoCreator.initBaseMesh2DPtr(topoData);
TopoCreator.getPolyLines(polylines, baseMesh2D, false);
TopoCreator.deletePolyLineRhino(baseMesh2D);
DA.SetDataList(0, polylines);
}