/// <summary>
/// Selects all of the features whose centroids lie within a given polygon.
/// </summary>
/// <remarks>This method searches for all features whose centroids are within the given polygon and updates the
/// default selection.</remarks>
/// <param name="mapAlias">MapAlias of the map.</param>
/// <param name="points">Array of points forming the polygon.</param>
public virtual void PolygonSelection(string mapAlias, System.Drawing.Point[] points)
{
Map map = GetMapObj(mapAlias);
// Convert them to map coordinates
MapInfo.Geometry.DPoint [] dpnts = new MapInfo.Geometry.DPoint[points.Length];
for (int indx = 0; indx < points.Length; indx++)
{
map.DisplayTransform.FromDisplay(points[indx], out dpnts[indx]);
}
// Create a polygon from these points
CoordSys dispCSys = map.GetDisplayCoordSys();
CoordSys geomCSys =
Session.Current.CoordSysFactory.CreateCoordSys(dispCSys.Type, dispCSys.Datum, dispCSys.Units, dispCSys.OriginLongitude, dispCSys.OriginLatitude, dispCSys.StandardParallelOne, dispCSys.StandardParallelTwo, dispCSys.Azimuth, dispCSys.ScaleFactor, dispCSys.FalseEasting, dispCSys.FalseNorthing, dispCSys.Range, map.Layers.Bounds, dispCSys.AffineTransform);
MapInfo.Geometry.MultiPolygon mp = new MapInfo.Geometry.MultiPolygon(geomCSys, MapInfo.Geometry.CurveSegmentType.Linear, dpnts);
// Search and select
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWithinGeometry(mp, ContainsType.Centroid);
Session.Current.Selections.DefaultSelection.Clear();
IMapLayerFilter _selFilter = MapLayerFilterFactory.FilterForTools(
map, MapLayerFilterFactory.FilterByLayerType(LayerType.Normal), MapLayerFilterFactory.FilterVisibleLayers(true),
"MapInfo.Tools.MapToolsDefault.SelectLayers", null);
ITableEnumerator table = map.Layers.GetTableEnumerator(_selFilter);
if (table != null) // null will be returned is select enabled layer is not visible, thus non-selectable
{
Session.Current.Catalog.Search(table, si, Session.Current.Selections.DefaultSelection, ResultSetCombineMode.AddTo);
}
}
void mapControl1_MouseMove(object sender, MouseEventArgs e)
{
if (false)
{
System.Drawing.PointF DisplayPoint = new PointF(e.X, e.Y);
MapInfo.Geometry.DisplayTransform converter = this.mapControl1.Map.DisplayTransform;
MapInfo.Geometry.DPoint MapPoint = new MapInfo.Geometry.DPoint();
converter.FromDisplay(DisplayPoint, out MapPoint);
double pX = Math.Round(MapPoint.x, 6);
double pY = Math.Round(MapPoint.y, 6);
string East = "��";
string West = "��";
string Longitude = "����";
string North = " ��";
string South = " ��";
string Latitude = "��";
DPoint p = MapPoint;// selectionFeature[0].Geometry.Centroid;
//// mapControl1.Map.SetView(new DPoint(p.x, p.y),
////Session.Current.CoordSysFactory.CreateLongLat(DatumID.WGS84),
////108851.80);
System.Drawing.Point pntClick = new System.Drawing.Point(e.X, e.Y);
DPoint pntCenter = new DPoint(0, 0);
this.mapControl1.Map.DisplayTransform.FromDisplay(pntClick, out pntCenter);
this.mapControl1.Map.Center = pntCenter;
if (pX > 0)
{
if (pX <= 180)
{
toolStripStatusLabel1.Text = string.Format(East + Longitude + ":{0}", pX);
}
else
{
toolStripStatusLabel1.Text = string.Format(East + Longitude + ":");
}
}
else if (pX < 0)
{
if (pX >= -180)
{
toolStripStatusLabel1.Text = string.Format(West + Longitude + ":{0}", Math.Abs(pX));
}
else
{
toolStripStatusLabel1.Text = string.Format(West + Longitude + ":");
}
}
else
{
toolStripStatusLabel1.Text = string.Format(Longitude + ":{0}", Math.Abs(pX));
}
if (pY > 0)
{
if (pY <= 90)
{
toolStripStatusLabel1.Text += string.Format(North + Latitude + ":{0}", pY);
}
else
{
toolStripStatusLabel1.Text += string.Format(North + Latitude + ":");
}
}
else if (pY < 0)
{
if (pY >= -90)
{
toolStripStatusLabel1.Text += string.Format(South + Latitude + ":{0}", Math.Abs(pY));
}
else
{
toolStripStatusLabel1.Text += string.Format(South + Latitude + ":");
}
}
else
{
toolStripStatusLabel1.Text += string.Format(Latitude + ":{0}", Math.Abs(pY));
}
}
}
public override void Process()
{
MapControlModel model = MapControlModel.GetModelFromSession();
model.SetMapSize(MapAlias, MapWidth, MapHeight);
MapInfo.Mapping.Map map = model.GetMapObj(MapAlias);
if (map == null)
{
return;
}
string strUID = HttpContext.Current.Request["uid"];
string strText = HttpContext.Current.Request["Name"];
System.Drawing.Point[] points = this.ExtractPoints(this.DataString);
System.Drawing.Color clr = UserMap.stringToColor(HttpContext.Current.Request["Color"]);
int lineWidth = Int32.Parse(HttpContext.Current.Request["LineWidth"]);
if (lineWidth <= 0)
{
lineWidth = 2;
}
int cnt = 0;
int len = points.Length;
double x = 0;
double y = 0;
MapInfo.Geometry.DPoint[] dPoints = new MapInfo.Geometry.DPoint[len];
for (cnt = 0; cnt < len; cnt++)
{
x = (double)points[cnt].X / 10000;
y = (double)points[cnt].Y / 10000;
dPoints[cnt] = new MapInfo.Geometry.DPoint(x, y);
}
UserMap.DeleteFeature(map, Constants.TempLayerAlias, strUID);
UserMap.AddLine(map, Constants.TempLayerAlias, strUID, strText, dPoints, clr, lineWidth);
/*
* FeatureLayer layer = map.Layers[Constants.TempLayerAlias] as FeatureLayer;
* if (layer == null)
* {
* return;
* }
*
* int cnt = 0;
* int len = points.Length;
* double x =0;
* double y = 0;
*
* MapInfo.Geometry.DPoint[] dPoints = new MapInfo.Geometry.DPoint[len];
*
* for (cnt = 0; cnt < len; cnt++)
* {
* x = points[cnt].X/10000;
* y = points[cnt].Y/10000;
* dPoints[cnt] = new MapInfo.Geometry.DPoint(x, y);
* }
*
*
* //创建线图元及其样式
* FeatureGeometry fg = new MultiCurve(layer.CoordSys, CurveSegmentType.Linear, dPoints);
* CompositeStyle cs = new MapInfo.Styles.CompositeStyle(
* new SimpleLineStyle(new LineWidth(linewidth, LineWidthUnit.Pixel), 2, Color.Red)
* );
*
* MapInfo.Data.Feature feature = new MapInfo.Data.Feature(layer.Table.TableInfo.Columns);
*
* feature.Geometry = fg;
* feature.Style = cs;
* feature["name"] = name;
*
* //将线图元加入图层
* layer.Table.InsertFeature(feature);
*/
MemoryStream ms = model.GetMap(MapAlias, MapWidth, MapHeight, ExportFormat);
StreamImageToClient(ms);
return;
}