/// <summary>
/// This method gets the map object out of the mapfactory with given mapalias and
/// Adds a point feature into a temp layer, exports it to memory stream and streams it back to client.
/// </summary>
/// <remarks>None</remarks>
public override void Process()
{
// Extract points from the string
System.Drawing.Point [] points = this.ExtractPoints(this.DataString);
MapControlModel model = MapControlModel.GetModelFromSession();
model.SetMapSize(MapAlias, MapWidth, MapHeight);
MapInfo.Mapping.Map map = model.GetMapObj(MapAlias);
if(map == null) return;
// There will be only one point, convert it to spatial
MapInfo.Geometry.DPoint point;
map.DisplayTransform.FromDisplay(points[0], out point);
IMapLayer lyr = map.Layers[SampleConstants.TempLayerAlias];
if(lyr == null)
{
TableInfoMemTable ti = new TableInfoMemTable(SampleConstants.TempTableAlias);
// Make the table mappable
ti.Columns.Add(ColumnFactory.CreateFeatureGeometryColumn(map.GetDisplayCoordSys()));
ti.Columns.Add(ColumnFactory.CreateStyleColumn());
Table table = MapInfo.Engine.Session.Current.Catalog.CreateTable(ti);
map.Layers.Insert(0, new FeatureLayer(table, "templayer", SampleConstants.TempLayerAlias));
}
lyr = map.Layers[SampleConstants.TempLayerAlias];
if(lyr == null) return;
FeatureLayer fLyr = lyr as FeatureLayer;
MapInfo.Geometry.Point geoPoint = new MapInfo.Geometry.Point(map.GetDisplayCoordSys(), point);
// Create a Point style which is a red pin point.
SimpleVectorPointStyle vs = new SimpleVectorPointStyle();
vs.Code = 67;
vs.Color = Color.Red;
vs.PointSize = Convert.ToInt16(24);
vs.Attributes = StyleAttributes.PointAttributes.BaseAll;
vs.SetApplyAll();
// Create a Feature which contains a Point geometry and insert it into temp table.
Feature pntFeature = new Feature(geoPoint, vs);
MapInfo.Data.Key key = fLyr.Table.InsertFeature(pntFeature);
// Send contents back to client.
MemoryStream ms = model.GetMap(MapAlias, MapWidth, MapHeight, ExportFormat);
StreamImageToClient(ms);
}
/// <summary>
/// �Ļ�վ��Ϣ����ͼ��Դ�ļ�
/// </summary>
/// <param name="f"></param>
/// <param name="pointCode"></param>
/// <param name="iType"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="pointname"></param>
private void ModifyPoint(Feature f, string pointCode, int iType, double x, double y, string pointname, bool IsBusy)
{
MapInfo.Geometry.Point g = new MapInfo.Geometry.Point(GetCoordSys(), x, y);
SimpleVectorPointStyle vs = null;
MapInfo.Data.Table table = MapInfo.Engine.Session.Current.Catalog.GetTable(strTempMapPointTable);
//vs = new SimpleVectorPointStyle(34, System.Drawing.Color.Red, 12);
//��ȡ��վ��ʾЧ��
vs = GetSimpleVectorPointStyleByiType(iType);
SimpleLineStyle ls = new SimpleLineStyle(new LineWidth(1, LineWidthUnit.Pixel), 1, System.Drawing.Color.Red);
SimpleInterior si = new SimpleInterior(1, System.Drawing.Color.Red, System.Drawing.Color.Red);
AreaStyle a = new AreaStyle(ls, si);
CompositeStyle cs = new CompositeStyle(a, null, null, vs);
cs = GetCompositeStyleByIsBusy(IsBusy, iType);
//Columns cols = new Columns();
//cols.Add(MapInfo.Data.ColumnFactory.CreateStringColumn("Caption", 50));
//Feature f = new Feature(g, cs, cols);
f["Obj"] = g;
f["MI_Style"] = cs;
f["ID"] = pointCode;
f["Caption"] = pointname;
table.UpdateFeature(f);
MapInfo.Data.TableInfo tableInfo = table.TableInfo;
tableInfo.WriteTabFile(); //����Ϊ.tab�ļ�
}
// find cities with distance of center of map
private void menuItemSearchWithinDistance_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
// to compare to SearchWithinScreenRadius, we are calculating
// the search distance the same way it does
System.Drawing.Rectangle rect=mapControl1.Bounds;
System.Drawing.Point pt = new System.Drawing.Point(rect.Left, rect.Top);
pt.X += rect.Width/2;
pt.Y += rect.Height/2;
DPoint dpt1 = new DPoint();
// convert center point to map coords (could use map.Center)
_map.DisplayTransform.FromDisplay(pt, out dpt1);
Distance d = MapInfo.Mapping.SearchInfoFactory.ScreenToMapDistance(_map, rect.Width/6);
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWithinDistance(dpt1, _map.GetDisplayCoordSys(), d, ContainsType.Centroid);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
// show search geometry on screen for visual confirmation
MapInfo.Geometry.Point p = new MapInfo.Geometry.Point(_map.GetDisplayCoordSys(), dpt1);
FeatureGeometry buffer = p.Buffer(d.Value, d.Unit, 20, DistanceType.Spherical);
ShowSearchGeometry(buffer);
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// find nearest city to center of map
private void menuItemSearchNearest_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
// to compare to SearchWithinScreenRadius, we are calculating
// the search distance the same way it does
System.Drawing.Rectangle rect = mapControl1.Bounds;
System.Drawing.Point pt = new System.Drawing.Point(rect.Left, rect.Top);
pt.X += rect.Width / 2;
pt.Y += rect.Height / 2;
DPoint dpt1 = new DPoint();
// convert center point to map coords (could use map.Center)
_map.DisplayTransform.FromDisplay(pt, out dpt1);
Distance d = MapInfo.Mapping.SearchInfoFactory.ScreenToMapDistance(_map, 3);
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchNearest(dpt1, _map.GetDisplayCoordSys(), d);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
MapInfo.Geometry.Point p = new MapInfo.Geometry.Point(_map.GetDisplayCoordSys(), dpt1);
FeatureGeometry buffer = p.Buffer(d.Value, d.Unit, 20, DistanceType.Spherical);
ShowSearchGeometry(buffer);
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
/// <summary>
/// This method gets the map object out of the mapfactory with given mapalias and
/// Adds a point feature into a temp layer, exports it to memory stream and streams it back to client.
/// </summary>
/// <remarks>None</remarks>
public override void Process()
{
// Extract points from the string
System.Drawing.Point [] points = this.ExtractPoints(this.DataString);
MapControlModel model = MapControlModel.GetModelFromSession();
model.SetMapSize(MapAlias, MapWidth, MapHeight);
MapInfo.Mapping.Map map = model.GetMapObj(MapAlias);
if (map == null)
{
return;
}
// There will be only one point, convert it to spatial
MapInfo.Geometry.DPoint point;
map.DisplayTransform.FromDisplay(points[0], out point);
IMapLayer lyr = map.Layers[SampleConstants.TempLayerAlias];
if (lyr == null)
{
TableInfoMemTable ti = new TableInfoMemTable(SampleConstants.TempTableAlias);
// Make the table mappable
ti.Columns.Add(ColumnFactory.CreateFeatureGeometryColumn(map.GetDisplayCoordSys()));
ti.Columns.Add(ColumnFactory.CreateStyleColumn());
Table table = MapInfo.Engine.Session.Current.Catalog.CreateTable(ti);
map.Layers.Insert(0, new FeatureLayer(table, "templayer", SampleConstants.TempLayerAlias));
}
lyr = map.Layers[SampleConstants.TempLayerAlias];
if (lyr == null)
{
return;
}
FeatureLayer fLyr = lyr as FeatureLayer;
MapInfo.Geometry.Point geoPoint = new MapInfo.Geometry.Point(map.GetDisplayCoordSys(), point);
// Create a Point style which is a red pin point.
SimpleVectorPointStyle vs = new SimpleVectorPointStyle();
vs.Code = 67;
vs.Color = Color.Red;
vs.PointSize = Convert.ToInt16(24);
vs.Attributes = StyleAttributes.PointAttributes.BaseAll;
vs.SetApplyAll();
// Create a Feature which contains a Point geometry and insert it into temp table.
Feature pntFeature = new Feature(geoPoint, vs);
MapInfo.Data.Key key = fLyr.Table.InsertFeature(pntFeature);
// Send contents back to client.
MemoryStream ms = model.GetMap(MapAlias, MapWidth, MapHeight, ExportFormat);
StreamImageToClient(ms);
}
private void FindCity()
{
Find find = null;
try
{
MapInfo.Mapping.Map map = null;
// Get the map
if (MapInfo.Engine.Session.Current.MapFactory.Count == 0 ||
(map = MapInfo.Engine.Session.Current.MapFactory[MapControl1.MapAlias]) == null)
{
return;
}
// Do the find
MapInfo.Mapping.FeatureLayer findLayer = (MapInfo.Mapping.FeatureLayer)map.Layers[_findLayerName];
find = new Find(findLayer.Table, findLayer.Table.TableInfo.Columns[_findColumnName]);
FindResult result = find.Search(DropDownList1.SelectedItem.Text);
if (result.ExactMatch)
{
// Create a Feature (point) for the location we found
CoordSys csys = findLayer.CoordSys;
FeatureGeometry g = new MapInfo.Geometry.Point(csys, result.FoundPoint.X, result.FoundPoint.Y);
Feature f = new Feature(g, new MapInfo.Styles.SimpleVectorPointStyle(52, System.Drawing.Color.DarkGreen, 32));
// Delete the existing find object and add the new one
MapInfo.Mapping.FeatureLayer workingLayer = (MapInfo.Mapping.FeatureLayer)map.Layers[_workingLayerName];
if (workingLayer != null)
{
(workingLayer.Table as ITableFeatureCollection).Clear();
workingLayer.Table.InsertFeature(f);
}
// Set the map's center and zooom
map.Center = new DPoint(result.FoundPoint.X, result.FoundPoint.Y);
MapInfo.Geometry.Distance d = new MapInfo.Geometry.Distance(1000, map.Zoom.Unit);
map.Zoom = d;
}
else
{
this.Label3.Text = ("Cannot find the country");
}
find.Dispose();
}
catch (Exception)
{
if (find != null)
{
find.Dispose();
}
}
}
private void FindCity()
{
Find find = null;
try
{
MapInfo.Mapping.Map map = null;
// Get the map
if (MapInfo.Engine.Session.Current.MapFactory.Count == 0 ||
(map = MapInfo.Engine.Session.Current.MapFactory[MapControl1.MapAlias]) == null)
{
return;
}
// Do the find
MapInfo.Mapping.FeatureLayer findLayer = (MapInfo.Mapping.FeatureLayer) map.Layers[_findLayerName];
find = new Find(findLayer.Table, findLayer.Table.TableInfo.Columns[_findColumnName]);
FindResult result = find.Search(DropDownList1.SelectedItem.Text);
if (result.ExactMatch)
{
// Create a Feature (point) for the location we found
CoordSys csys = findLayer.CoordSys;
FeatureGeometry g = new MapInfo.Geometry.Point(csys, result.FoundPoint.X, result.FoundPoint.Y);
Feature f = new Feature(g, new MapInfo.Styles.SimpleVectorPointStyle(52, System.Drawing.Color.DarkGreen, 32));
// Delete the existing find object and add the new one
MapInfo.Mapping.FeatureLayer workingLayer = (MapInfo.Mapping.FeatureLayer)map.Layers[_workingLayerName];
if (workingLayer != null)
{
(workingLayer.Table as ITableFeatureCollection).Clear();
workingLayer.Table.InsertFeature(f);
}
// Set the map's center and zooom
map.Center = new DPoint(result.FoundPoint.X, result.FoundPoint.Y);
MapInfo.Geometry.Distance d = new MapInfo.Geometry.Distance(1000, map.Zoom.Unit);
map.Zoom = d;
}
else
{
this.Label3.Text = ("Cannot find the country");
}
find.Dispose();
}
catch (Exception)
{
if (find != null) find.Dispose();
}
}