游荡的灵魂
无根的灵魂,除了游荡,还能去那里?

我不多写了。。网上现有的代码算法有问题。把代码放上来,需要的同志可以参考。


 IFeatureClass featureClass 
=GetLayerByName("摄像头").FeatureClass;
                    IFeature featureForDraw;
                       
                    IFeatureCursor tmpcur 
=Base.QueryElement(featureClass,"");
                                   
                    
while(true)
                    {
                        featureForDraw 
= tmpcur.NextFeature();  //得到对象

                        
if(featureForDraw!=null)
                        {
                            ISimpleFillSymbol  pointSymbol 
= new SimpleFillSymbolClass();
                            pointSymbol.Style 
= ESRI.ArcGIS.Display.esriSimpleFillStyle.esriSFSNull;
                       
   
                            pointSymbol.Color 
= Base.GetRGBColor(255,0,0);
                           
                            ILineSymbol linesymbol
=new SimpleLineSymbolClass();
                        
                            linesymbol.Width
=1.1;
                            linesymbol.Color
=Base.GetRGBColor(255,0,0);
                   
                           
                       

                            pointSymbol.Outline
=linesymbol;

                           

                            IPoint p
=featureForDraw.ShapeCopy as IPoint;
                            
//这里用了属性查询,用到前面得到的对象的主字段值。
                            
//IRubberBand pRubberBand=new  RubberCircleClass();
                            ESRI.ArcGIS.Geometry.IConstructCircularArc con=new CircularArcClass();

                          
                            
double FW=40.0;
                            
double  zj=0.01//直径
                            double  jd=1.414;
                   
                            
string _fw=featureForDraw.get_Value(featureForDraw.Fields.FindField("SP_ANGLE")).ToString().Trim();
                            
if(_fw!=string.Empty)
                            {
                                FW
=double.Parse(_fw);
                            }
                   
                            
string  _zj=featureForDraw.get_Value(featureForDraw.Fields.FindField("BOUND")).ToString().Trim();
                            
if(_zj!=string.Empty)
                            {
                                zj
=double.Parse(_zj);
                            }

                            
try
                            {
                              
                                
//con.ConstructCircle(p,System.Convert.ToDouble(bound_str)/2000,false);
                           
                                ESRI.ArcGIS.Geometry.ICircularArc cir
=new CircularArcClass();
                                cir
=con as ICircularArc;
                               
                             
                            
//重点
                                 cir.PutCoordsByAngle(p,FW*Math.PI/180,40*Math.PI/180,zj);

                                IPoint 起始点
=cir.FromPoint;
                                IPoint 结束点
=cir.ToPoint;

                                ILine line
=new LineClass();
                                ILine line1
=new LineClass();
                                line.PutCoords(p,起始点);
                                line1.PutCoords(结束点,p);

   
                                ISegmentCollection  polygon   
= new PolygonClass();

                                
object Missing  = Type.Missing;

                                polygon.AddSegment(line 
as ISegment,ref Missing,ref Missing);
                                polygon.AddSegment(cir 
as ISegment,ref Missing,ref Missing);
                                polygon.AddSegment(line1 
as ISegment,ref Missing,ref Missing);

                                IGeometry geometry   
=polygon as IGeometry;
                               
                                       
                                
object tmpSymbol=(object)pointSymbol;
                                axMapControl1.DrawShape (geometry,
ref tmpSymbol);
                               
                            }
                            
catch
                            {
                           
                            }
                           
                        }
                        
else
                        {
                            
break;
                        }
                    }
                }
                
catch(Exception ex)
                {
                    System.Console.WriteLine(ex.Message);
                }



  程序猿们,我也跟风开了网店,主要经营土特产,云南核桃,四川正宗土鸡蛋鸡蛋。有需要的就支持一下小店哈  七彩山川美食(http://qcsc.taobao.com) 

 

posted on 2008-03-05 14:35  游荡的灵魂  阅读(1627)  评论(0编辑  收藏  举报