// find the closest point to a point from a group of cells
internal static int FindClosestPointIndex(List <Cell> cellList, Point2d pt)
{
List <Point2d> ptList = new List <Point2d>();
for (int i = 0; i < cellList.Count; i++)
{
if (cellList[i].CellAvailable)
{
ptList.Add(cellList[i].CenterPoint);
}
}
return(PolygonUtility.FindClosestPointIndex(ptList, pt));
}