/// <summary>
/// 绘制点缓冲
/// </summary>
private void DrawBufferByPoint(ESRI.ArcGIS.ADF.Web.Geometry.Point adfPt)
{
//1.连接服务器
AGSServerConnection connection = new AGSServerConnection();
connection.Host = "localhost";
connection.Connect();
//2.获得服务器
IServerObjectManager pSom = connection.ServerObjectManager;
IServerContext pSc = pSom.CreateServerContext("china", "MapServer");//服务名和类型
IMapServer mapServer = pSc.ServerObject as IMapServer;
//3.使用服务器对象 几何对象转换
IMapServerObjects pMso = mapServer as IMapServerObjects;
//ESRI.ArcGIS.Geometry.IGeometry comPt = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.ValueObjectToComObject(adfPt, pSc)
// as ESRI.ArcGIS.Geometry.IGeometry;////ValueObjectToComObject(pnt, pSC);
IPoint pt = new ESRI.ArcGIS.Geometry.PointClass();
pt.X = adfPt.X;
pt.Y = adfPt.Y;
ESRI.ArcGIS.Geometry.IGeometry comPt = pt;
ESRI.ArcGIS.Geometry.SpatialReferenceEnvironment sre = new SpatialReferenceEnvironment();
ISpatialReference pSR = sre.CreateGeographicCoordinateSystem(4326);
comPt.SpatialReference = pSR;
//绘制buffer
ITopologicalOperator pTOPO = comPt as ITopologicalOperator;
pTOPO.Simplify();//??
double bufDis = Map1.Extent.Width / 2;
IPolygon bufPoly = pTOPO.Buffer(10) as IPolygon;
bufPoly.Densify(0, 0);
ESRI.ArcGIS.ADF.ArcGISServer.PolygonN valuePolyN = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.ComObjectToValueObject(bufPoly, pSc, typeof(ESRI.ArcGIS.ADF.ArcGISServer.PolygonN)) as ESRI.ArcGIS.ADF.ArcGISServer.PolygonN;
ESRI.ArcGIS.ADF.Web.Geometry.Polygon adfPoly = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.ToAdfPolygon(valuePolyN) as ESRI.ArcGIS.ADF.Web.Geometry.Polygon;
#region Densify
////***Densify
// ESRI.ArcGIS.Geometry.IPointCollection com_pointcollection = (ESRI.ArcGIS.Geometry.IPointCollection)bufPoly;
// ESRI.ArcGIS.ADF.Web.Geometry.PointCollection new_adf_pointcollection = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.ComObjectToValueObject(com_pointcollection, pSc, typeof(ESRI.ArcGIS.ADF.ArcGISServer.poly));
//ESRI.ArcGIS.ADF.Web.Geometry.PointCollection new_adf_pointcollection = new ESRI.ArcGIS.ADF.Web.Geometry.PointCollection();
//for (int i = 0; i < com_pointcollection.PointCount - 1; i++)
//{
// ESRI.ArcGIS.ADF.Web.Geometry.Point new_adf_pt = new ESRI.ArcGIS.ADF.Web.Geometry.Point();
// new_adf_pt.X = com_pointcollection.get_Point(i).X;
// new_adf_pt.Y = com_pointcollection.get_Point(i).Y;
// new_adf_pointcollection.Add(new_adf_pt);
//}
//ESRI.ArcGIS.ADF.Web.Geometry.Ring new_adf_ring = new ESRI.ArcGIS.ADF.Web.Geometry.Ring();
//new_adf_ring.Points = new_adf_pointcollection;
//ESRI.ArcGIS.ADF.Web.Geometry.RingCollection new_adf_ringcollection = new ESRI.ArcGIS.ADF.Web.Geometry.RingCollection();
//new_adf_ringcollection.Add(new_adf_ring);
//ESRI.ArcGIS.ADF.Web.Geometry.Polygon new_adf_polygon = new ESRI.ArcGIS.ADF.Web.Geometry.Polygon();
//new_adf_polygon.Rings = new_adf_ringcollection;
//ESRI.ArcGIS.ADF.Web.Geometry.Geometry geom = new_adf_polygon as ESRI.ArcGIS.ADF.Web.Geometry.Geometry;
////*******Densify
#endregion
ESRI.ArcGIS.ADF.Web.Geometry.Geometry geom = adfPoly as ESRI.ArcGIS.ADF.Web.Geometry.Geometry;
GraphicElement geoEle = new GraphicElement(geom, System.Drawing.Color.Red);
try
{
Map1.Zoom(adfPoly);
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
geoEle.Symbol.Transparency = 50;
IEnumerable gfc = Map1.GetFunctionalities();
MapResource gMap = null;
foreach (IGISFunctionality gfunc in gfc)
{
if (gfunc.Resource.Name == "graph")
{
gMap = (MapResource)gfunc.Resource;
break;
}
}
if (gMap == null)
{
return;
}
ElementGraphicsLayer glayer = null;
foreach (DataTable dt in gMap.Graphics.Tables)
{
if (dt is ElementGraphicsLayer)
{
glayer = dt as ElementGraphicsLayer;
break;
}
}
if (glayer == null)
{
glayer = new ElementGraphicsLayer();
gMap.Graphics.Tables.Add(glayer);
}
glayer.Clear();//清除数据
glayer.Add(geoEle);
//4.释放服务器对象
pSc.ReleaseContext();
if (Map1.ImageBlendingMode == ImageBlendingMode.WebTier)
{
Map1.Refresh();
}
else if (Map1.ImageBlendingMode == ImageBlendingMode.Browser)
{
Map1.RefreshResource(gMap.Name);
}
return;
}
/// <summary>
/// Apply to the graphics layer any markers defined by the user
/// </summary>
private void DrawMarkers()
{
// Fill mapMarkers collection with markers from QueryString or Form data.
IList<GraphicElement> mapMarkers = ReadMarkers();
if (mapMarkers.Count == 0)
return;
// Get a reference to the Graphics layer
MapResource mapResource = null;
foreach (IGISFunctionality gisFunctionality in Map.GetFunctionalities())
{
if (gisFunctionality != null && gisFunctionality.Resource.Name == Properties.GraphicsResourceName)
{
mapResource = (MapResource)gisFunctionality.Resource;
break;
}
}
if (mapResource == null)
return;
ElementGraphicsLayer graphicsLayer = null;
foreach (DataTable table in mapResource.Graphics.Tables)
{
if (table is ElementGraphicsLayer)
{
graphicsLayer = (ElementGraphicsLayer)table;
break;
}
}
// Graphics layer not found, create one
if (graphicsLayer == null)
{
graphicsLayer = new ElementGraphicsLayer("Pin 1");
mapResource.Graphics.Tables.Add(graphicsLayer);
}
// Draw markers
graphicsLayer.Clear();
foreach (GraphicElement marker in mapMarkers)
{
graphicsLayer.Add(marker);
}
// Change zoom to fit all points in map
if (mapMarkers.Count == 1)
{
//simply center the map in the point
//ESRI.ArcGIS.ADF.Web.Geometry.Point point = (point)System.Drawing.Point();
Map.CenterAt(mapMarkers[0].Geometry as Point);
}
else
{
// Find the envelope that will enclose all points
PointCollection points = new PointCollection();
foreach (GraphicElement element in mapMarkers)
{
points.Add(element.Geometry as Point);
}
Envelope newExtent = Geometry.GetMinimumEnclosingEnvelope(points);
newExtent = newExtent.Expand(10);
// display all markers on the map, adding some margin
Map.Extent = newExtent;
}
}
