锐客网

  1. 首页 > it技术 > >

MapXtreme2005中关于使用动画图层的一个方法

关于使用动画图层的一个方法 首先是要对图层进行初始化，初始出来新的一个图层中的两个图元。 private void btnInitializeObjects_Click(object sender, System.EventArgs e) { Catalog Cat = MapInfo.Engine.Session.Current.Catalog;
//Create Temp layer TableInfoMemTable tblInfoTemp = new TableInfoMemTable("Animation"); Table tblTemp = Cat.GetTable("Animation"); if (tblTemp != null) //Table exists close it Cat.CloseTable("Animation"); tblInfoTemp.Columns.Add(ColumnFactory.CreateFeatureGeometryColumn(mapControl1.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); mapControl1.Map.Layers.Add(lyr);
//Create Points FeatureGeometry pt = new MapInfo.Geometry.Point(lyr.CoordSys, new DPoint(130, 42)) as FeatureGeometry; CompositeStyle cs = new CompositeStyle(new SimpleVectorPointStyle(37, System.Drawing.Color.Red, 10)); Feature ftr = new Feature(tblTemp.TableInfo.Columns); ftr.Geometry = pt; ftr.Style = cs; ftr["Name"] = "Kelly"; ftr["Dept"] = "Sales"; ftr["Level"] = 3; tblTemp.InsertFeature(ftr);
FeatureGeometry pt2 = new MapInfo.Geometry.Point(lyr.CoordSys, new DPoint(122, 45)) as FeatureGeometry; CompositeStyle cs2 = new CompositeStyle(new SimpleVectorPointStyle(44, System.Drawing.Color.Purple, 10)); Feature ftr2 = new Feature(tblTemp.TableInfo.Columns); ftr2.Geometry = pt2; ftr2.Style = cs2; ftr2["Name"] = "Greg"; ftr2["Dept"] = "Marketing"; ftr2["Level"] = 2; tblTemp.InsertFeature(ftr2); } 在Timer事件中进行对图元的移动。 private void timer1_Tick(object sender, System.EventArgs e) { Catalogcat = MapInfo.Engine.Session.Current.Catalog; Table tbl = cat.GetTable("Animation"); if (tbl != null){ //Update the position of the points SearchInfosi = MapInfo.Data.SearchInfoFactory.SearchWhere("Name = 'Kelly'"); Feature ftr = cat.SearchForFeature(tbl, si); SearchInfo si2 = MapInfo.Data.SearchInfoFactory.SearchWhere("Name = 'Greg'"); Feature ftr2 = cat.SearchForFeature(tbl, si2);
if (DateTime.Now.TimeOfDay.Seconds % 4 == 0) { ftr.Geometry.GeometryEditor.OffsetByXY(-5, -25, DistanceUnit.Mile, DistanceType.Spherical); ftr2.Geometry.GeometryEditor.OffsetByXY(0, 25, DistanceUnit.Mile, DistanceType.Spherical); } else { ftr.Geometry.GeometryEditor.OffsetByXY(-10, 0, DistanceUnit.Mile, DistanceType.Spherical); ftr2.Geometry.GeometryEditor.OffsetByXY(10, 5, DistanceUnit.Mile, DistanceType.Spherical); } ftr.Geometry.EditingComplete(); ftr2.Geometry.EditingComplete(); ftr.Update(); ftr2.Update(); } }

    推荐阅读


    上一篇：高德地图API获取天气

    下一篇：JSP中两种include的区别