创建临时图层-添加图元-加图层标注-清除图元

[转]MapXtreme 图层操作 创建临时图层-添加图元-加图层标注-清除图元

2011-11-22阅读162 评论0

操作实体类：

public class map_operation

{

public MapControlModel model;

public MapInfo.Mapping.Map map;

public Catalog Cat;

public MapInfo.Data.Table tblTemp;

public map_operation()

{

model = MapControlModel.GetModelFromSession();

map = model.GetMapObj("Map1");

Cat = MapInfo.Engine.Session.Current.Catalog;

tblTemp = Cat.GetTable("Animation");

}

//创建临时图层

public void creat_temp_table()

{

TableInfoMemTable tblInfoTemp = new TableInfoMemTable("Animation"); //创建GPS终端小车集图层

if (tblTemp != null) //Table exists close it

{

Cat.CloseTable("Animation");

}

tblInfoTemp.Columns.Add(ColumnFactory.CreateFeatureGeometryColumn(map.GetDisplayCoordSys()));

tblInfoTemp.Columns.Add(ColumnFactory.CreateStyleColumn());

tblInfoTemp.Columns.Add(ColumnFactory.CreateStringColumn("Name", 40));

tblInfoTemp.Columns.Add(ColumnFactory.CreateStringColumn("Dept", 15));

tblInfoTemp.Columns.Add(ColumnFactory.CreateIntColumn("Level"));

tblTemp = Cat.CreateTable(tblInfoTemp);

FeatureLayer lyr = new FeatureLayer(tblTemp);

map.Layers.Add(lyr);

}

//添加图元

public void insert_feature(string fileName,double x,double y,string GPS_NUMBER)

{

BitmapPointStyle bStyle = new BitmapPointStyle(fileName); //fileName格式为@"gpscar2_p2.bmp" 这个@代表C:\Program Files\Common Files\MapInfo\MapXtreme\6.7.1\CustSymb

bStyle.PointSize = Convert.ToInt16(24);

bStyle.NativeSize = true;

bStyle.Attributes = StyleAttributes.PointAttributes.BaseAll;

bStyle.SetApplyAll();

FeatureGeometry pt = new MapInfo.Geometry.Point(map.GetDisplayCoordSys(), new DPoint(y, x)) as FeatureGeometry;

Feature ftr = new Feature(tblTemp.TableInfo.Columns);

ftr.Geometry = pt; //图元地理位置设置

ftr.Style = bStyle; //图元为位图样式

ftr["Name"] = "aaaa";

ftr["Dept"] = GPS_NUMBER; //GPS终端号

ftr["Level"] = 2;

tblTemp.InsertFeature(ftr); //插入图元

}

//加图层标注

public void creat_mark()

{

MapInfo.Data.Table tblTemp = Cat.GetTable("Animation");

LabelSource labelSource = new LabelSource(tblTemp); //给所创建的临时表Animation中的图元加标注

//指定要标准字段所在的列

labelSource.DefaultLabelProperties.Caption = "Name"; //所要标注的列名

labelSource.DefaultLabelProperties.Layout.Offset = 8; //标注偏移

labelSource.DefaultLabelProperties.Layout.Alignment = MapInfo.Text.Alignment.TopRight;//标注对齐方式

labelSource.DefaultLabelProperties.Style.Font.BackColor = System.Drawing.Color.White; //字体背景

labelSource.DefaultLabelProperties.Style.Font.ForeColor = System.Drawing.Color.Red; //字体颜色

labelSource.DefaultLabelProperties.Style.Font.TextEffect = MapInfo.Styles.TextEffect.Box; //边缘效果

labelSource.DefaultLabelProperties.Style.Font.FontWeight = MapInfo.Styles.FontWeight.Bold; //粗体

MapInfo.Styles.SimpleLineStyle simpleLineStyle = new MapInfo.Styles.SimpleLineStyle(0); //标注注释线

labelSource.DefaultLabelProperties.Style.CalloutLine.ApplyStyle(simpleLineStyle);

//取消标注注释线

LabelLayer labelLayer = new LabelLayer();

labelLayer.Name = "jcbz"; //设置标注图层的名称

labelLayer.Sources.Append(labelSource); //往地图中加入该标注层

map.Layers.Add(labelLayer);

}

//清除临时图层中所有的图元

public void clear_feature()

{

SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWhere("");

IResultSetFeatureCollection ifs;

MapInfo.Data.Table Tm;

Tm = Cat.GetTable("Tm");

if (Tm != null) //Table exists close it

{

si = MapInfo.Data.SearchInfoFactory.SearchWhere("");

ifs = MapInfo.Engine.Session.Current.Catalog.Search("Tm", si);

foreach (Feature ft in ifs)

Tm.DeleteFeature(ft); //删除所有该图层上的图元

}

}

}