/// <summary>
/// Merge basins using using MapWinGIS.Utils
/// </summary>
/// <param name="shed"></param>
/// <param name="drainage"></param>
/// <returns></returns>
private static IFeature mergeBasinsByDrainage(IFeatureSet shed, BinTree drainage)
{
if (drainage == null) return null;
IFeature left = mergeBasinsByDrainage(shed, drainage.left);
IFeature right = mergeBasinsByDrainage(shed, drainage.right);
IFeature lr = mergeAbuttingPolygons(left, right);
IFeature outlet = shed.get_Shape(drainage.val);
// check for multipart shape
if (outlet.NumGeometries > 1)
{
Trace.WriteLine("Subbasin " + drainage.val.ToString() + " has " +
outlet.NumGeometries.ToString() + " parts");
}
else
{
// check for anticlockwise polygon
double area = SignedArea(outlet);
if (area < 0)
{
Trace.WriteLine("Needed to reverse subbasin " + drainage.val.ToString());
outlet = ReverseShape(outlet);
}
}
return mergeAbuttingPolygons(lr, outlet);
}
// #endregion
// #region "Create SWAT *.Fig"
// /// <summary>
// /// A function to generate a *.fig file from joined basins for use in SWAT.
// /// </summary>
// /// <param name="JoinBasinShapePath"></param>
// /// <param name="ResultFigPath"></param>
// /// <param name="callback"></param>
// /// <returns></returns>
// public static bool CreateSWATFig(string JoinBasinShapePath, string ResultFigPath, IProgressHandler callback)
// {
// int OutletIDFieldNum = -1, DSWSIDFieldNum = -1, USWSIDFieldNum1 = -1, USWSIDFieldNum2 = -1, ReservoirFieldNum = -1;
// if (callback != null) callback.Progress("Status", 0, "Create SWAT *.fig");
// Shapefile sf = new Shapefile();
// sf.Open(JoinBasinShapePath, null);
// for (int i = 0; i < sf.NumFields; i++)
// {
// switch (sf.DataTable.Columns[i].ColumnName)
// {
// case "OutletID":
// OutletIDFieldNum = i;
// break;
// case "DSWSID":
// DSWSIDFieldNum = i;
// break;
// case "USWSID1":
// USWSIDFieldNum1 = i;
// break;
// case "USWSID2":
// USWSIDFieldNum2 = i;
// break;
// case "Reservoir":
// ReservoirFieldNum = i;
// break;
// }
// }
// if (OutletIDFieldNum == -1 || DSWSIDFieldNum == -1 || USWSIDFieldNum1 == -1 || USWSIDFieldNum2 == -1)
// {
// return false;
// }
// StreamWriter fig = new StreamWriter(ResultFigPath);
// Stack<int> substack = new Stack<int>();
// List<int> subIDs = new List<int>();
// int Hyd_Stor_Num = 0;
// int Res_Num = 0;
// int InFlow_Num1 = 0;
// int InFlow_Num2 = 0;
// int InFlow_ID = 0;
// int UpstreamCount, UpstreamFinishedCount;
// //Write subbasins
// for (int i = 0; i < sf.NumRows(); i++)
// {
// Hyd_Stor_Num++;
// fig.Write("subbasin 1{0,6:G6}{0,6:G6} Subbasin: {0:G}\n {0,5:D5}0000.sub\n", Hyd_Stor_Num);
// if (sf.get_CellValue(DSWSIDFieldNum, i).ToString() == "-1")
// {
// substack.Push(i);
// }
// subIDs.Add(-1);
// }
// //Write the rest
// int curridx;
// string currUS1, currUS2;
// int currUS1idx, currUS2idx, currUS1ID, currUS2ID;
// while (substack.Count > 0)
// {
// curridx = substack.Pop();
// currUS1 = sf.get_CellValue(USWSIDFieldNum1, curridx).ToString();
// currUS2 = sf.get_CellValue(USWSIDFieldNum2, curridx).ToString();
// if (currUS1 == "-1" && currUS2 == "-1") //then we're on an outer reach.
// {
// if (subIDs[curridx] == -1) //then it hasn't been added yet. add a route
// {
// Hyd_Stor_Num++;
// InFlow_Num1 = curridx + 1;
// fig.Write("route 2{0,6:G6}{1,6:G6}{2,6:G6}\n {1,5:D5}0000.rte{1,5:D5}0000.swq\n", Hyd_Stor_Num, curridx + 1, InFlow_Num1);
// subIDs[curridx] = Hyd_Stor_Num;
// if (sf.get_CellValue(ReservoirFieldNum, curridx).ToString() == "1") //it's a reservoir
// {
// Hyd_Stor_Num++;
// Res_Num++;
// InFlow_Num1 = Hyd_Stor_Num - 1;
// InFlow_ID = curridx + 1;
// fig.Write("routres 3{0,6:G6}{1,6:G6}{2,6:G6}{3,6:G6}\n {3,5:D5}0000.res{3,5:D5}0000.lwq\n", Hyd_Stor_Num, Res_Num, InFlow_Num1, InFlow_ID);
// subIDs[curridx] = Hyd_Stor_Num;
// }
// }
// }
// else //we're on a middle or final reach
// {
// UpstreamCount = 0;
// UpstreamFinishedCount = 0;
// //Get the hydro IDs and indexes of the upstream links
// currUS1ID = -2;
// currUS2ID = -2;
// currUS1idx = -1;
// currUS2idx = -1;
// if (currUS1 != "-1")
// {
// UpstreamCount++;
// currUS1idx = GetBasinIndexByID(sf, Int32.Parse(currUS1));
// if (currUS1idx >= 0)
// {
// currUS1ID = subIDs[currUS1idx];
// if (currUS1ID != -1)
// {
// UpstreamFinishedCount++;
// }
// }
// }
// if (currUS2 != "-1")
// {
// UpstreamCount++;
// currUS2idx = GetBasinIndexByID(sf, Int32.Parse(currUS2));
// if (currUS2idx >= 0)
// {
// currUS2ID = subIDs[currUS2idx];
// if (currUS2ID != -1)
// {
// UpstreamFinishedCount++;
// }
// }
// }
// if (UpstreamCount == UpstreamFinishedCount) //all upstreams finished
// {
// if (currUS1ID != -2 && currUS2ID != -2) //It has two upstream, have to do a double sum
// {
// Hyd_Stor_Num++;
// InFlow_Num1 = currUS1ID;
// InFlow_Num2 = curridx + 1;
// fig.Write("add 5{0,6:G6}{1,6:G6}{2,6:G6}\n", Hyd_Stor_Num, InFlow_Num1, InFlow_Num2);
// Hyd_Stor_Num++;
// InFlow_Num1 = currUS2ID;
// InFlow_Num2 = Hyd_Stor_Num - 1;
// fig.Write("add 5{0,6:G6}{1,6:G6}{2,6:G6}\n", Hyd_Stor_Num, InFlow_Num1, InFlow_Num2);
// }
// else if (currUS1ID != -2) //It only has one upstream, check if it's 1
// {
// Hyd_Stor_Num++;
// InFlow_Num1 = currUS1ID;
// InFlow_Num2 = curridx + 1;
// fig.Write("add 5{0,6:G6}{1,6:G6}{2,6:G6}\n", Hyd_Stor_Num, InFlow_Num1, InFlow_Num2);
// }
// else if (currUS2ID != -2) //It only has one upstream, check if it's 2
// {
// Hyd_Stor_Num++;
// InFlow_Num1 = currUS2ID;
// InFlow_Num2 = curridx + 1;
// fig.Write("add 5{0,6:G6}{1,6:G6}{2,6:G6}\n", Hyd_Stor_Num, InFlow_Num1, InFlow_Num2);
// }
// //After summing, create the route and possibly reservoir
// Hyd_Stor_Num++;
// InFlow_Num1 = Hyd_Stor_Num - 1;
// fig.Write("route 2{0,6:G6}{1,6:G6}{2,6:G6}\n {1,5:D5}0000.rte{1,5:D5}0000.swq\n", Hyd_Stor_Num, curridx + 1, InFlow_Num1);
// subIDs[curridx] = Hyd_Stor_Num;
// if (sf.get_CellValue(ReservoirFieldNum, curridx).ToString() == "1")
// {
// Hyd_Stor_Num++;
// Res_Num++;
// InFlow_Num1 = Hyd_Stor_Num - 1;
// InFlow_ID = curridx + 1;
// fig.Write("routres 3{0,6:G6}{1,6:G6}{2,6:G6}{3,6:G6}\n {3,5:D5}0000.res{3,5:D5}0000.lwq\n", Hyd_Stor_Num, Res_Num, InFlow_Num1, InFlow_ID);
// subIDs[curridx] = Hyd_Stor_Num;
// }
// }
// else //There are upstream items that need to still be processed before this one
// {
// substack.Push(curridx);
// if (currUS1idx != -1 && currUS1ID == -1)
// {
// substack.Push(currUS1idx);
// }
// if (currUS2idx != -1 && currUS2ID == -1)
// {
// substack.Push(currUS2idx);
// }
// }
// }
// }
// //Write out the saveconc and finish commands
// int SaveFile_Num = 1;
// int Print_Freq = 0; //0 for daily, 1 for hourly
// fig.Write("saveconc 14{0,6:G6}{1,6:G6}{2,6:G6}\n watout.dat\n", Hyd_Stor_Num, SaveFile_Num, Print_Freq);
// fig.WriteLine("finish 0");
// fig.Close();
// sf.Close();
// return true;
// }
// #endregion
// #region "Hydrology Private Helper Functions"
private static void GetStreamElevationPoints(int sindx, IFeatureSet streamShape, IRaster demGrid, out double elevLow, out double elevHigh)
{
var shapePoints = streamShape.get_Shape(sindx).NumPoints;
elevLow = 10000000;
elevHigh = -1000000;
for (var i = 0; i < shapePoints; i += 2)
{
var pt = streamShape.get_Shape(sindx).Coordinates[i];
RcIndex position = demGrid.ProjToCell(pt.X, pt.Y);
if (position.IsEmpty()) continue;
double currVal = demGrid.Value[position.Row, position.Column];
if (currVal < elevLow)
{
elevLow = currVal;
}
if (currVal > elevHigh)
{
elevHigh = currVal;
}
}
}