IFeatureLayer pFeatureLayer;//点图层
private void menuOpenShp_Click(object sender, EventArgs e)
{
IWorkspaceFactory pWorkspaceFactory;
IFeatureWorkspace pFeatureWorkspace;
//获取当前路径和文件名
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "shpfile|*.shp";
String ThiessenPolygoPath = @"C:\MyVoronoi\ThiessenPolygo.Shp";
if (dlg.ShowDialog() == DialogResult.OK)
{
strFullPath = dlg.FileName;
if (strFullPath == "")
{
return;
}
int Index = strFullPath.LastIndexOf("\\");
filePath = strFullPath.Substring(0, Index);
fileName = strFullPath.Substring(Index + 1);
//打开工作空间并添加shp文件
pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();
//注意此处的路径是不能带文件名的
pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(filePath, 0);
pFeatureLayer = new FeatureLayerClass();
//注意这里的文件名是不能带路径的
pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(fileName);
if (pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPolyline)
{
MessageBox.Show("shp文件不是线要素图层");
return;
}
pFeatureLayer.Name = pFeatureLayer.FeatureClass.AliasName;
axMapControl1.Map.AddLayer(pFeatureLayer);
axMapControl1.ActiveView.Refresh();
menuOpenShp.Enabled = false;
InitList();
PublicDim.ReverseMouseWheel();
//初始化图层
CreateDrawnLayer();
}
}
private void Drawn(int Distance)
{
pGra = axMapControl1.Map as IGraphicsContainer;
pGra.DeleteAllElements();
pAcitveView = pGra as IActiveView;
//清空绘图
clear();
//分析矩形关系
//List<IPolyline> lstAllFeature = new List<IPolyline>();
foreach (IFeature f in lstFeature)
{
if (f.Shape is IPointCollection)
{
IPointCollection p = f.Shape as IPointCollection;
List <IPoint> listPPP = new List <IPoint>();
for (int i = 0; i < p.PointCount; i++)
{
listPPP.Add(p.get_Point(i));
}
List <TuLine> listTuline = PublicDim.DrawDog(listPPP, Distance);
foreach (TuLine t in listTuline)
{
//g.DrawLine(pen, ((Line)linelist[i]).Begin, ((Line)linelist[i]).End);
ILineElement pLineEle = new LineElementClass();
pEle = pLineEle as IElement;
ILineSymbol pLineSym = new SimpleLineSymbolClass();
//pLineSym.Color = this.getRGBColor(0, 0, 255);
pLineSym.Width = 2;
pLineEle.Symbol = pLineSym;
//pFeat = new LineClass();
//pFeat.Shape
pEle.Geometry = CreatePolyline(t);
pGra.AddElement(pEle, 0);
pAcitveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}
}
}
//axMapControl1.Refresh();
}
