private void mapMain_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
//left click - fill array of coordinates
Coordinate coord = mapMain.PixelToProj(e.Location);
if (polygonmouseClick == true)
{
if (firstClick == true)
{
//Creat a list to contain the polygon coordinates
List <Coordinate> polygonArray = new List <Coordinate>();
//Create an instance for LinearRing class.
//We pass the polygon List to the constructor of this class
LinearRing polygonGeometry = new LinearRing(polygonArray);
//add polygonGeomety instance to polygonFeature
IFeature polygonFeature = polygonF.AddFeature(polygonGeometry);
//add first coordinate
polygonFeature.Coordinates.Add(coord);
//add to the list of coordinates
xCoordinates.Add(coord.X);
yCoordinates.Add(coord.Y);
//set the polygon feature attribute
polygonID = polygonID + 1;
polygonFeature.DataRow["PolygonID"] = polygonID;
firstClick = false;
//Add volume data column
polygonFeature.DataRow["Volume"] = 0;
}
else
{
//second or more clicks-add points to the existing feature
IFeature existingFeature = (IFeature)polygonF.Features[polygonF.Features.Count - 1];
existingFeature.Coordinates.Add(coord);
//add to the list of coordinates
xCoordinates.Add(coord.X);
yCoordinates.Add(coord.Y);
//refresh the map if line has 2 or more points
if (existingFeature.Coordinates.Count != 0)
{
//refresh the map
polygonF.InitializeVertices();
mapMain.ResetBuffer();
}
}
}
}
}
public FeatureSet DrawLine()
{
FeatureSet lineF = new FeatureSet(FeatureType.Line);
lineF.Projection = map.Projection;
lineF.DataTable.Columns.Add("Value", typeof(double));//方便之后在等值线上标注
MapLineLayer lineLayer = default(MapLineLayer);
lineLayer = (MapLineLayer)map.Layers.Add(lineF);
LineSymbolizer symnol = new LineSymbolizer(Color.Black, 2);
lineLayer.Symbolizer = symnol;
string[] thename = raster.Filename.Split('\\');
lineLayer.LegendText = thename[thename.Length - 1] + "_line";
//MapLabelLayer
MapLabelLayer labelLayer = new MapLabelLayer();
ILabelCategory category = labelLayer.Symbology.Categories[0];
category.Expression = "[Value]";
category.SelectionSymbolizer.BackColorEnabled = true;
category.Symbolizer.BorderVisible = false;
category.Symbolizer.BackColor = Color.FromArgb(128, Color.LightBlue);;
category.Symbolizer.FontStyle = FontStyle.Regular;
category.Symbolizer.FontColor = Color.Black;
category.Symbolizer.FontSize = 8.5f;
category.Symbolizer.Orientation = ContentAlignment.MiddleCenter;
category.Symbolizer.Alignment = StringAlignment.Center;
lineLayer.ShowLabels = true;
lineLayer.LabelLayer = labelLayer;
/*double min_X, min_Y, max_X, max_Y;
* min_X = raster.Xllcenter - raster.CellWidth / 2;
* min_Y = raster.Yllcenter - raster.CellHeight / 2;
* max_X = raster.CellToProj(0, raster.NumColumns-1).X + raster.CellWidth / 2;
* max_Y = raster.CellToProj(0, 0).Y + raster.CellHeight/2;
* double interspace = (raster.CellToProj(1, 1).X - raster.CellToProj(0, 0).X) *
* (raster.CellToProj(1, 1).X - raster.CellToProj(0, 0).X) + (raster.CellToProj(1, 1).Y - raster.CellToProj(0, 0).Y) *
* (raster.CellToProj(1, 1).Y - raster.CellToProj(0, 0).Y);
* Console.WriteLine("minX: " + min_X + " , minY: "+ min_Y + " , maxX: " + max_X + " , maxY: " + max_Y);*/
List <Tin_Point> lpoints = new List <Tin_Point>();
foreach (var lines in contourData)
{
//if(lines.Key == 18)
//{
//int i = 0;
foreach (var line in lines.Value)
{
Tin_Point p1 = new Tin_Point(line.startPoint.X, line.startPoint.Y, lines.Key);
Tin_Point p2 = new Tin_Point(line.endPoint.X, line.endPoint.Y, lines.Key);
//p1.Type = i;
//p2.Type = i;
lpoints.Add(p1);
lpoints.Add(p2);
List <Coordinate> lineArray = new List <Coordinate>();
LineString lineGeometry = new LineString(lineArray);
IFeature lineFeature = lineF.AddFeature(lineGeometry);
lineFeature.Coordinates.Add(line.startPoint);
lineFeature.Coordinates.Add(line.endPoint);
lineFeature.DataRow["Value"] = lines.Key;
lineF.InitializeVertices();
//i++;
}
//}
}
/*
* Polish polish = new Polish();
* List<List<Tin_Point>> new_tin_points = polish.ClassifyLine(lpoints);
* Console.WriteLine("new_tin_point num: " + new_tin_points.Count);
* foreach(var lines in new_tin_points)
* {
* //int i = 0;
* foreach(var p in lines)
* {
* Console.Write(p.X + " , " + p.Y + "||");
* }
* Console.WriteLine("*********************************");
* }
* foreach (var lines in new_tin_points)
* {
* //int i = 0;
*
* Console.WriteLine(lines[0].X + " , " + lines[0].Y + "||" + lines[lines.Count-1].X + " , " + lines[lines.Count - 1].Y);
* }
*
*
* foreach (var freeline in new_tin_points)
* {
* List<Coordinate> lineArray = new List<Coordinate>(); ;
* ILineString lineGeometry = new LineString(lineArray);
* IFeature lineFeature = lineF.AddFeature(lineGeometry);
* lineFeature.DataRow["Value"] = (int)freeline[0].Value;
* foreach (var p in freeline)
* {
* Coordinate coordinate = new Coordinate(p.X, p.Y);
* lineArray.Add(coordinate);
* lineFeature.Coordinates.Add(coordinate);
* lineF.InitializeVertices();
* }
* }
*/
map.ResetBuffer();
return(lineF);
}
public void FreeLine(List <Tin_Point> freeline)
{
if (freeline.Count < 4)
{
Console.WriteLine("不符合标准！");
return;
//return null;
}
else
{
}
//label标识
//
List <Coordinate> lineArray = new List <Coordinate>();;
ILineString lineGeometry = new LineString(lineArray);
IFeature lineFeature = fs.AddFeature(lineGeometry);
lineFeature.DataRow["Value"] = freeline[0].Value;
//非封闭的等值线，需要在最前面加入p0，p0=p1,pn+1 = pn
freeline.Add(freeline[freeline.Count - 1]);
int i, j, n;
n = freeline.Count;//等值点总数
for (i = freeline.Count - 1; i > 0; i--)
{
freeline[i] = freeline[i - 1];
}
freeline.Add(freeline[freeline.Count - 1]);
//
double t1, t2, t3, t, a, b, c, d, x, y;//abcd为参数，xy为新插入点的坐标，
//t1,t2,t3分别表示系数的开方，t1表示一次项系数，t2表示二次项系数，它表示3此项系数
t = 0.5f / Clip; //系数0-0.5
//List<List<Tin_Point>> point_list = new List<List<Tin_Point>>();
for (i = 0; i < n - 2; i++)
{
//
Coordinate coordinate = new Coordinate(freeline[i + 1].X, freeline[i + 1].Y);
lineArray.Add(coordinate);
lineFeature.Coordinates.Add(coordinate);
//
//point_list.Add(new List<Tin_Point>());
//List<Tin_Point> tp = new List<Tin_Point>();
//point_list.Add(tp);
for (j = 1; j < Clip; j++)
{
t1 = j * t;
t2 = t1 * t1;
t3 = t2 * t1;
//下面是公式的表达
a = 4.0 * t2 - t1 - 4.0 * t3;
b = 1.0 - 10.0 * t2 + 12.0 * t3;
c = t1 + 8.0 * t2 - 12.0 * t3;
d = 4.0 * t3 - 2.0 * t2;
x = a * freeline[i].X + b * freeline[i + 1].X + c * freeline[i + 2].X + d * freeline[i + 3].X;
y = a * freeline[i].Y + b * freeline[i + 1].Y + c * freeline[i + 2].Y + d * freeline[i + 3].Y;
//Tin_Point new_point = new Tin_Point(x, y);
//
coordinate = new Coordinate(x, y);
lineArray.Add(coordinate);
LineString ls = new LineString(lineArray);
lineFeature.Coordinates.Add(coordinate);
fs.InitializeVertices();
//
//point_list[i].Add(new_point);
}
if (i == n - 3)
{
coordinate = new Coordinate(freeline[i + 2].X, freeline[i + 2].Y);
lineArray.Add(coordinate);
LineString ls = new LineString(lineArray);
lineFeature.Coordinates.Add(coordinate);
fs.InitializeVertices();
}
//tp.Clear();
}
map.ResetBuffer();
//return point_list;
}
private void button1_Click(object sender, EventArgs e)
{
if (comboBox1.Text == "")
{
MessageBox.Show("要素信息不能为空", "TIN提示信息", MessageBoxButtons.OKCancel);
}
if (comboBox5.Text == "")
{
MessageBox.Show("纬度选择", "TIN提示信息", MessageBoxButtons.OKCancel);
}
if (comboBox6.Text == "")
{
MessageBox.Show("经度选择", "TIN提示信息", MessageBoxButtons.OKCancel);
}
if (flag == false)
{
FeatureSet delaunayline = new FeatureSet(FeatureType.Line);
MapLineLayer ml = (MapLineLayer)map.Layers.Add(delaunayline);
LineSymbolizer symbol = new LineSymbolizer(Color.Black, 2);
ml.Symbolizer = symbol;
ml.LegendText = "delaunay";
List <Tin_Point> tin_Points = new List <Tin_Point>();
for (int i = 0; i < ifeatureset.Features.Count; i++)
{
//Console.WriteLine("x: " + ifeatureset.Features[i].BasicGeometry.Coordinates[0].X + ", y: " + ifeatureset.Features[i].BasicGeometry.Coordinates[0].Y);
tin_Points.Add(new Tin_Point(ifeatureset.Features[i].BasicGeometry.Coordinates[0].X, ifeatureset.Features[i].BasicGeometry.Coordinates[0].Y));
}
Delaunay delaunay = new Delaunay();
List <Triangle> triangles = new List <Triangle>();
triangles = delaunay.ConstructionDelaunay(tin_Points);
foreach (var tri in triangles)
{
Coordinate a = new Coordinate(tri.p1.X, tri.p1.Y);
Coordinate b = new Coordinate(tri.p2.X, tri.p2.Y);
Coordinate c = new Coordinate(tri.p3.X, tri.p3.Y);
List <Coordinate> lineArray = new List <Coordinate>();
ILineString lineGeometry = new LineString(lineArray);
IFeature lineFeature = delaunayline.AddFeature(lineGeometry);
lineArray.Add(a);
lineArray.Add(b);
lineArray.Add(c);
DotSpatial.Topology.LineString ls = new LineString(lineArray);
lineFeature.Coordinates.Add(a);
lineFeature.Coordinates.Add(b);
lineFeature.Coordinates.Add(c);
delaunayline.InitializeVertices();
map.ResetBuffer();
}
}
if (FileName != "")
{
ifeatureset.SaveAs(FileName, true);
if (checkBox1.CheckState == CheckState.Checked)
{
var shp = Shapefile.OpenFile(FileName);
shp.Projection = ifeatureset.Projection;
map.Layers.Add(shp);
}
}
MessageBox.Show("TIN操作完成", "TIN提示信息", MessageBoxButtons.OK);
this.Close();
}
public void RaisePostBackEvent(string eventArgument)
{
GDIMap m = ControlMap;
string[] arg = eventArgument.Split('|');
string cmd = arg[0].ToUpper();
switch (cmd)
{
case "CLICK":
{
if (MapClick != null)
{
System.Drawing.Point pt1 = new System.Drawing.Point(Convert.ToInt32(arg[2]), Convert.ToInt32(arg[3]));
Coordinate pm1 = m.PixelToProj(pt1);
MapClickEventArgs mc = new MapClickEventArgs();
mc.button = Convert.ToInt32(arg[1]);;
mc.x = pm1.X;
mc.y = pm1.Y;
MapClick(this, mc);
}
}
break;
case "ADDFEATURE":
{
int num = Convert.ToInt32(arg[1]);
System.Drawing.Point pt = new System.Drawing.Point();
Coordinate[] pm = new Coordinate[num];
for (int i = 0; i < num; i++)
{
pt.X = Convert.ToInt32(arg[(i + 1) * 2]);
pt.Y = Convert.ToInt32(arg[(i + 1) * 2 + 1]);
pm[i] = m.PixelToProj(pt);
}
FeatureSet fs = m.Layers.SelectedLayer.DataSet as FeatureSet;
Feature f;
FeatureType ft = FeatureType.Unspecified;
if (m.Layers.SelectedLayer != null)
{
IMapFeatureLayer MFL = (IMapFeatureLayer)m.Layers.SelectedLayer;
if (MFL.GetType() == typeof(MapPointLayer))
{
ft = FeatureType.Point;
}
if (MFL.GetType() == typeof(MapLineLayer))
{
ft = FeatureType.Line;
}
if (MFL.GetType() == typeof(MapPolygonLayer))
{
ft = FeatureType.Polygon;
}
if (ft != FeatureType.Unspecified)
{
f = new Feature(ft, pm);
if (AddFeature != null)
{
AddFeature(this, fs, f);
}
else
{
fs.AddFeature(f);
fs.InitializeVertices();
}
}
}
}
break;
case "DATAGRID":
{
if (m.Layers.SelectedLayer != null)
{
//string script=null;
if (DataOnGrid != null)
{
DataGridEventArgs e = new DataGridEventArgs();
IMapFeatureLayer MFL = (IMapFeatureLayer)m.Layers.SelectedLayer;
int n = MFL.Selection.Count;
if (n > 0)
{
FeatureSet fs = MFL.Selection.ToFeatureSet();
e.Recordsource = fs.DataTable;
}
else
{
e.Recordsource = MFL.DataSet.DataTable;
}
DataOnGrid(this, e);
}
}
}
break;
case "FORCEREFRESH":
{
//simply do nothing
}
break;
}
}
private void drawToolStripMenuItem_Click(object sender, EventArgs e) //绘制曲流颈和曲流轴
{
//DataColumn column = new DataColumn("LineID");
//if (!lineF_.DataTable.Columns.Contains("LineID"))
//{
// lineF_.DataTable.Columns.Add(column);
//}
foreach (List <DotSpatial.Topology.Coordinate> FeaturePoint in FeaturePoints)
{
//Create a new List called lineArray.
//This list will store the Coordinates
//We are going to store the mouse click coordinates into this array.
List <DotSpatial.Topology.Coordinate> lineArray = new List <DotSpatial.Topology.Coordinate>();
//Create an instance for LineString class.
//We need to pass collection of list coordinates
LineString lineGeometry = new LineString(lineArray);
//Add the linegeometry to line feature
//add 曲流颈 coordinate to the line feature
IFeature lineFeature1 = lineF_.AddFeature(lineGeometry); //添加线要素
lineFeature1.Coordinates.Add(FeaturePoint[0]);
lineFeature1.Coordinates.Add(FeaturePoint[1]);
//DataRowBuilder dataRowBuilder1 = new DataRowBuilder();
//lineFeature1.DataRow = new DataRow();
//Add the linegeometry to line feature
//add 曲流轴 coordinate to the line feature
IFeature lineFeature2 = lineF_.AddFeature(lineGeometry); //添加线要素
lineFeature2.Coordinates.Add(FeaturePoint[2]);
lineFeature2.Coordinates.Add(FeaturePoint[3]);
//refresh the map if line has 2 or more points
if (lineFeature1.Coordinates.Count >= 2 && lineFeature2.Coordinates.Count >= 2)
{
lineF_.InitializeVertices();
map1.ResetBuffer();
}
}
//set projection
lineF_.Projection = map1.Projection;
//initialize the featureSet attribute table
DataColumn column = new DataColumn("LineID");
if (!lineF_.DataTable.Columns.Contains("LineID"))
{
lineF_.DataTable.Columns.Add(column);
}
//add the featureSet as map layer
lineLayer = (MapLineLayer)map1.Layers.Add(lineF_);
//Set the symbolizer to the line feature.
LineSymbolizer symbol = new LineSymbolizer(Color.Red, Color.Red, 2, DashStyle.Dot, LineCap.Square);
lineLayer.Symbolizer = symbol;
lineLayer.LegendText = "line";
MessageBox.Show("Draw Over！！！");
}
public void RaiseCallbackEvent(String eventArgument)
// public virtual void RaiseCallbackEvent(String eventArgument) //to override in subclass
{
// returnCommand = "REFRESH"; //unsightly refresh when change legend selection
returnCommand = "NOTHING";
// string Nm = SessionName; //not used
GDIMap m = (GDIMap)System.Web.HttpContext.Current.Session[(string)ViewState[ClientID]];
if (m == null)
{
return;
}
string[] arg = eventArgument.Split('|');
string cmd = arg[0].ToUpper();
switch (cmd)
{
case "ZOOMALL":
{
ZoomAll(ref m);
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "SELECT":
{
if (m.Layers.SelectedLayer != null)
{
System.Drawing.Point pt1 = new System.Drawing.Point(Convert.ToInt32(arg[1]), Convert.ToInt32(arg[2]));
System.Drawing.Point pt2 = new System.Drawing.Point(Convert.ToInt32(arg[3]), Convert.ToInt32(arg[4]));
Coordinate pm1 = m.PixelToProj(pt1);
Coordinate pm2 = m.PixelToProj(pt2);
Extent ex = new Extent(Math.Min(pm1.X, pm2.X), Math.Min(pm1.Y, pm2.Y),
Math.Max(pm1.X, pm2.X), Math.Max(pm1.Y, pm2.Y));
IEnvelope MapEnv = m.Extent.ToEnvelope();
m.Layers.SelectedLayer.ClearSelection(out MapEnv);
m.Layers.SelectedLayer.ClearSelection();
IEnvelope affectedarea = null;
// m.Layers.SelectedLayer.Select(m.ViewExtents.ToEnvelope(), ex.ToEnvelope(), Symbology.SelectionMode.IntersectsExtent, out affectedarea);
m.Layers.SelectedLayer.Select(ex.ToEnvelope(), ex.ToEnvelope(), Symbology.SelectionMode.Intersects, out affectedarea);
returnCommand = "STRUCTURE";
}
else
{
returnValue = "<table><tr><td>Select a layer first.<p></td></tr><table>";
returnCommand = "POPUP";
// returnValue = "Select a layer first.";
// returnCommand = "ALERT";
}
}
break;
case "INFO":
{
System.Drawing.Point pt = new System.Drawing.Point(Convert.ToInt32(arg[2]), Convert.ToInt32(arg[3]));
Coordinate pm = m.PixelToProj(pt);
Extent ex = new Extent(pm.X, pm.Y, pm.X, pm.Y);
if (m.Layers.SelectedLayer != null)
{
FeatureSet fs = m.Layers.SelectedLayer.DataSet as FeatureSet;
// List<IFeature> flist = fs.Select(ex); //returns empty list when IndexMode == false
List <int> flist = fs.SelectIndices(ex);
int n = flist.Count;
// returnValue = "<table border='1'>"; //looks goofy
returnValue = "<table>";
if (n > 0)
{
for (int i = 0; i < fs.DataTable.Columns.Count; i++)
{
returnValue += "<tr><td>" + fs.DataTable.Columns[i].ColumnName +
// "</td><td>" + flist[0].DataRow[i].ToString() + "</td></tr>";
"</td><td>" + fs.GetFeature(flist[0]).DataRow[i].ToString() + "</td></tr>";
}
returnValue += "</table>";
returnCommand = "POPUP";
}
}
else
{
returnValue = "<table><tr><td>Select a layer first.<p></td></tr><table>";
returnCommand = "POPUP";
// returnValue = "Select a layer first.";
// returnCommand = "ALERT";
}
}
break;
case "RESIZE":
{
Size NewSz = new Size(Convert.ToInt32(arg[2]), Convert.ToInt32(arg[3]));
Size ActualSz = ControlSize;
if (ActualSz.Width == 0 || ActualSz.Height == 0)
{
ControlSize = NewSz;
ZoomAll(ref m);
returnCommand = "STRUCTURE";
}
else
{
if (NewSz != ActualSz)
{
ControlSize = NewSz;
returnCommand = "STRUCTURE";
}
else
{
returnCommand = "NOTHING";
}
}
}
break;
case "ZOOMRECT":
{
System.Drawing.Point pt1 = new System.Drawing.Point(Convert.ToInt32(arg[1]), Convert.ToInt32(arg[2]));
System.Drawing.Point pt2 = new System.Drawing.Point(Convert.ToInt32(arg[3]), Convert.ToInt32(arg[4]));
Coordinate pm1 = m.PixelToProj(pt1);
Coordinate pm2 = m.PixelToProj(pt2);
Extent x = new Extent(Math.Min(pm1.X, pm2.X),
Math.Min(pm1.Y, pm2.Y),
Math.Max(pm1.X, pm2.X),
Math.Max(pm1.Y, pm2.Y));
m.ViewExtents = x;
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "ZOOMIN":
{
int x = Convert.ToInt32(arg[1]);
int y = Convert.ToInt32(arg[2]);
System.Drawing.Point pntZoomAndCenter = new System.Drawing.Point((x - m.Size.Width / 2), (y - m.Size.Height / 2));
m.MapFrame.Pan(pntZoomAndCenter);
m.ZoomIn();
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "ZOOMOUT":
{
int x = Convert.ToInt32(arg[1]);
int y = Convert.ToInt32(arg[2]);
System.Drawing.Point pnt = new System.Drawing.Point((x - m.Size.Width / 2), (y - m.Size.Height / 2));
m.MapFrame.Pan(pnt);
m.ZoomOut();
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "PAN":
{
int x = Convert.ToInt32(arg[1]);
int y = Convert.ToInt32(arg[2]);
// not used: System.Drawing.Point pnt = new System.Drawing.Point((x - m.Size.Width / 2), (y - m.Size.Height / 2));
m.MapFrame.Pan(new System.Drawing.Point(x, y));
returnCommand = "REFRESH";
}
break;
case "WHEELIN":
{
m.ZoomIn();
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "WHEELOUT":
{
m.ZoomOut();
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "DATAGRID": //moved to here from RaisePostBackEvent
{
if (m.Layers.SelectedLayer != null)
{
//string script=null;
IMapFeatureLayer MFL = (IMapFeatureLayer)m.Layers.SelectedLayer;
int n = MFL.Selection.Count;
FeatureSet fs;
DataTable rs;
if (n > 0)
{
fs = MFL.Selection.ToFeatureSet();
rs = fs.DataTable;
}
else
{
fs = MFL.DataSet as FeatureSet;
rs = fs.DataTable;
}
if (DataOnGrid != null) //Let event handler display grid?
{
DataGridEventArgs e = new DataGridEventArgs();
e.Recordsource = rs;
DataOnGrid(this, e);
}
else //Display default HTML grid
{
returnValue = "<table border='1'><tr>";
for (int h = 0; h < rs.Columns.Count; h++)
{
returnValue += "<th>" + rs.Columns[h].ColumnName + "</th>";
}
returnValue += "</tr>";
string rowHtml;
for (int r = 0; r < rs.Rows.Count; r++)
{ //note: _much_ faster if build each row separately
rowHtml = "<tr>";
for (int c = 0; c < rs.Columns.Count; c++)
{
rowHtml += "<td>" + fs.GetFeature(r).DataRow[c].ToString() + "</td>";
}
rowHtml += "</tr>";
returnValue += rowHtml;
}
returnValue += "</table>";
returnCommand = "POPUP";
}
}
else
{
returnValue = "<table><tr><td>Select a layer first.<p></td></tr><table>";
returnCommand = "POPUP";
}
}
break;
case "ADDFEATURE": //moved to here from RaisePostBackEvent
{
int num = Convert.ToInt32(arg[1]);
System.Drawing.Point pt = new System.Drawing.Point();
Coordinate[] pm = new Coordinate[num];
for (int i = 0; i < num; i++)
{
pt.X = Convert.ToInt32(arg[(i + 1) * 2]);
pt.Y = Convert.ToInt32(arg[(i + 1) * 2 + 1]);
pm[i] = m.PixelToProj(pt);
}
if (m.Layers.SelectedLayer != null)
{
FeatureSet fs = m.Layers.SelectedLayer.DataSet as FeatureSet;
Feature f;
FeatureType ft = FeatureType.Unspecified;
IMapFeatureLayer MFL = (IMapFeatureLayer)m.Layers.SelectedLayer;
if (MFL.GetType() == typeof(MapPointLayer))
{
ft = FeatureType.Point;
}
if (MFL.GetType() == typeof(MapLineLayer))
{
ft = FeatureType.Line;
}
if (MFL.GetType() == typeof(MapPolygonLayer))
{
ft = FeatureType.Polygon;
}
if (ft != FeatureType.Unspecified)
{
f = new Feature(ft, pm);
try
{
if (AddFeature != null)
{
AddFeature(this, fs, f);
}
else
{
try
{
fs.AddFeature(f);
fs.Save();
}
catch
{
fs.Features.Remove(f);
throw; //re-throw exception
}
fs.InitializeVertices();
}
//Apparently have to force recreating labels when add feature.
if (MFL.LabelLayer != null)
{
// Recreating label layer works.
// MapLabelLayer NewLabels = new MapLabelLayer();
// NewLabels.Symbology = MFL.LabelLayer.Symbology;
// NewLabels.Symbolizer = MFL.LabelLayer.Symbolizer;
// MFL.LabelLayer = NewLabels;
// Recreating just labels also works.
MFL.LabelLayer.CreateLabels();
}
returnCommand = "FORCEREFRESH";
}
catch (Exception e)
{
returnValue = "Unable to save feature.<p>" + e.Message;
returnCommand = "POPUPANDREFRESH"; //erase new shape too
}
// fs.IndexMode = true;
//Adding a feature sets FeatureSet.IndexMode to false,
// causing fs.Select above in INFO case to return a list
// with Count == 0. One workaround is to set IndexMode
// back to true. This does cause all existing labels
// to disapper with refresh, but recreating label layer
// above fixed that. (Also tried InitializeVertices,
// InvalidateEnvelope, InvalidateVertices, UpdateExtents, etc.)
// Oops, setting IndexMode back to true corrupts shapes...
}
}
}
break;
}
//ControlMap = m;
System.Web.HttpContext.Current.Session[(string)ViewState[ClientID]] = m;
if (returnCommand == "STRUCTURE")
{
returnValue = redraw(ref m);
if (OnRedraw != null)
{
OnRedraw(this);
}
}
if (returnCommand == "REFRESH" | returnCommand == "REFRESHANDHIDEBUFFER")
{
returnValue = refresh(ref m);
if (OnRedraw != null)
{
OnRedraw(this);
}
}
}
private void map1_MouseDown(object sender, MouseEventArgs e)
{
switch (shapeType)
{
case "Point":
if (e.Button == MouseButtons.Left)
{
if ((pointmouseClick))
{
//This method is used to convert the screen cordinate to map coordinate
//e.location is the mouse click point on the map control
Coordinate coord = map1.PixelToProj(e.Location);
//Create a new point
//Input parameter is clicked point coordinate
DotSpatial.Topology.Point point = new DotSpatial.Topology.Point(coord);
//Add the point into the Point Feature
//assigning the point feature to IFeature because via it only we can set the attributes.
IFeature currentFeature = pointF.AddFeature(point);
//increase the point id
pointID = pointID + 1;
//set the ID attribute
currentFeature.DataRow["PointID"] = pointID;
//refresh the map
map1.ResetBuffer();
}
}
else
{
//mouse right click
map1.Cursor = Cursors.Default;
pointmouseClick = false;
}
break;
case "line":
if (e.Button == MouseButtons.Left)
{
//left click - fill array of coordinates
//coordinate of clicked point
Coordinate coord = map1.PixelToProj(e.Location);
if (linemouseClick)
{
//first time left click - create empty line feature
if (firstClick)
{
//Create a new List called lineArray.
//This list will store the Coordinates
//We are going to store the mouse click coordinates into this array.
List <Coordinate> lineArray = new List <Coordinate>();
//Create an instance for LineString class.
//We need to pass collection of list coordinates
LineString lineGeometry = new LineString(lineArray);
//Add the linegeometry to line feature
IFeature lineFeature = lineF.AddFeature(lineGeometry);
//add first coordinate to the line feature
lineFeature.Coordinates.Add(coord);
//set the line feature attribute
lineID = lineID + 1;
lineFeature.DataRow["LineID"] = lineID;
firstClick = false;
}
else
{
//second or more clicks - add points to the existing feature
IFeature existingFeature = lineF.Features[lineF.Features.Count - 1];
existingFeature.Coordinates.Add(coord);
//refresh the map if line has 2 or more points
if (existingFeature.Coordinates.Count >= 2)
{
lineF.InitializeVertices();
map1.ResetBuffer();
}
}
}
}
else
{
//right click - reset first mouse click
firstClick = true;
map1.ResetBuffer();
}
break;
case "polygon":
if (e.Button == MouseButtons.Left)
{
//left click - fill array of coordinates
Coordinate coord = map1.PixelToProj(e.Location);
if (polygonmouseClick)
{
//first time left click - create empty line feature
if (firstClick)
{
//Create a new List called polygonArray.
//this list will store the Coordinates
//We are going to store the mouse click coordinates into this array.
List <Coordinate> polygonArray = new List <Coordinate>();
//Create an instance for LinearRing class.
//We pass the polygon List to the constructor of this class
LinearRing polygonGeometry = new LinearRing(polygonArray);
//Add the polygonGeometry instance to PolygonFeature
IFeature polygonFeature = polygonF.AddFeature(polygonGeometry);
//add first coordinate to the polygon feature
polygonFeature.Coordinates.Add(coord);
//set the polygon feature attribute
polygonID = polygonID + 1;
polygonFeature.DataRow["PolygonID"] = polygonID;
firstClick = false;
}
else
{
//second or more clicks - add points to the existing feature
IFeature existingFeature = (IFeature)polygonF.Features[polygonF.Features.Count - 1];
existingFeature.Coordinates.Add(coord);
//refresh the map if line has 2 or more points
if (existingFeature.Coordinates.Count >= 3)
{
//refresh the map
polygonF.InitializeVertices();
map1.ResetBuffer();
}
}
}
}
else
{
//right click - reset first mouse click
firstClick = true;
}
break;
}
}
