ArcGIS Engine Capture

Original ArcGIS Engine capture

BOOLBcreateelement =true;intInternaltime =5;//time intervalintSnaptime =Ten;//Initial valueIElement m_element =NULL;//interface Drawing point elementsIPoint Currentpoint =NewPointclass ();//Current Mouse PointIPoint Snappoint =NULL;//Snap to the pointImovepointfeedback Pfeedback =NewMovepointfeedbackclass (); Public voidDomousemove (Objectsender, Imapcontrolevents2_onmousemoveevent e) {Axmapcontrol AxMapControl1= Sender asAxmapcontrol;    Currentpoint.putcoords (E.MAPX, e.mapy); if(Action = =actiontype.createfeature) {snaptime++; Snaptime= Snaptime%Internaltime; ILayer Layer=getlayerbyname (Snaplayer, axMapControl1); Ifeaturelayer M_ifeaturelyr= Layer asIfeaturelayer; if(bcreateelement) {createmarkerelement (currentpoint,axmapcontrol1); Bcreateelement=false; }           if(Snappoint = =NULL) Elementmoveto (Currentpoint, axMapControl1); //Mouse Auto -capture vertex    if(Snaptime = =0) Snappoint=snapping (E.MAPX, e.mapy, M_ifeaturelyr, axMapControl1); if(Snappoint! =NULL&& Snaptime = =0) Elementmoveto (Snappoint, axMapControl1); }}/// <summary>///Capture/// </summary>/// <param name= "x" ></param>/// <param name= "y" ></param>/// <param name= "Ifeaturelyr" ></param>/// <param name= "axmapcontrol1″></param>/// <returns></returns> PublicIPoint Snapping (DoubleXDoubley, Ifeaturelayer Ifeaturelyr, Axmapcontrol axMapControl1) {IPoint Ihitpoint=NULL; IMAP IMAP=Axmapcontrol1.map; Iactiveview IView=Axmapcontrol1.activeview; Ifeatureclass IFCLSS=Ifeaturelyr.featureclass; IPoint Point=NewPointclass (); Point.    Putcoords (x, y); DoubleLength = Convertpixelstomapunits (Axmapcontrol1.activeview,8); Itopologicaloperator Ptopo= Point asItopologicaloperator; Igeometry Pgeometry= Ptopo.buffer (length). Envelope asIgeometry; Ispatialfilter Spatialfilter=NewSpatialfilterclass (); Spatialfilter.geometryfield=IFeatureLyr.FeatureClass.ShapeFieldName; Spatialfilter.spatialrel=esrispatialrelenum.esrispatialrelcrosses; Spatialfilter.geometry=Pgeometry; Ifeaturecursor cursor= Ifclss.search (Spatialfilter,false); IFeature IF=cursor.    Nextfeature (); if(IF = =NULL)return NULL; IPoint ihitpt=NewESRI.    ArcGIS.Geometry.Point (); Ihittest ihittest= If.shape asihittest; DoubleHitdist =0; intPartindex =0; intVertexindex =0; BOOLBvertexhit =false; //tolerance in pixels for line hits    DoubleTol = Convertpixelstomapunits (IView,8); if(Ihittest.hittest (Point, Tol, Esrigeometryhitparttype.esrigeometrypartboundary, IHITPT,refHitdist,refPartindex,refVertexindex,refbvertexhit)) {Ihitpoint=ihitpt;    } AxMapControl1.ActiveView.Refresh (); returnIhitpoint;}/// <summary>///creates a new element for displaying/// </summary>/// <param name= "point" ></param>/// <param name= "axmapcontrol1″></param> Public voidcreatemarkerelement (IPoint point, Axmapcontrol axMapControl1) {Iactiveview IView=Axmapcontrol1.activeview; Igraphicscontainer Igraphcontainer= Axmapcontrol1.map asIgraphicscontainer; //Create a marker elementImarkerelement imarkerelement =NewMarkerelement () asimarkerelement; Isimplemarkersymbol Isym=NewSimplemarkersymbol (); //symbolizing elementsIrgbcolor icolor =NewRgbColor (); Icolor.red=0; Icolor.blue= -; Icolor.green=255; Isym.color=Icolor; Irgbcolor IColor2=NewRgbColor (); Icolor2.red=0; Icolor2.blue=0; Icolor2.green=0; Isym.outline=true; Isym.outlinecolor= IColor2 asIcolor; Isym.outlinesize=1; Isym.size=5; Isym.style.=esrisimplemarkerstyle.esrismscircle; Isymbol symbol= Isym asIsymbol; Symbol. ROP2=Esrirasteropcode.esriropnotxorpen; Imarkerelement.symbol=Isym; M_element= Imarkerelement asielement; M_element. Geometry= Point asIgeometry; Igraphcontainer.addelement (M_element,0); Iview.partialrefresh (Esriviewdrawphase.esriviewgraphics, M_element,NULL); Igeometry Igeo=m_element.    Geometry; Pfeedback.display=Iview.screendisplay; Pfeedback.symbol= Isym asIsymbol; Pfeedback.start (Igeo asIPoint, point);}/// <summary>///Moving Elements/// </summary>/// <param name= "iPt" ></param>/// <param name= "axmapcontrol1″></param> Public voidElementmoveto (IPoint iPt, Axmapcontrol axMapControl1) {//Moving ElementsPfeedback.moveto (iPt); Igeometry IGeo1=NULL;    Igeometry Igeoresult; if(M_element! =NULL) {IGeo1=m_element.　　Geometry; Igeoresult=Pfeedback.stop (); //map. Activeview.refresh ();M_element. Geometry =Igeoresult; //Update the location of the element 　　 axMapControl1.ActiveView.GraphicsContainer.UpdateElement (m_element); //re-move elementsPfeedback.start (iGeo1 asIPoint, iPt); //map. Activeview.refresh ();AxMapControl1.ActiveView.PartialRefresh (Esriviewdrawphase.esriviewgraphics,NULL,NULL); }} PublicILayer Getlayerbyname (stringLayerName, Axmapcontrol axMapControl1) {     for(inti =0; i < Axmapcontrol1.layercount; i++) {if(Axmapcontrol1.get_layer (i). Name.equals (layername))returnAxmapcontrol1.get_layer (i); }    return NULL;} Public DoubleConvertpixelstomapunits (Iactiveview Pactiveview,Doublepixelunits) {    Doublerealworlddisplayextent; intpixelextent; DoubleSizeofonepixel; Pixelextent=pActiveView.ScreenDisplay.DisplayTransformation.get_DeviceFrame (). right–    PActiveView.ScreenDisplay.DisplayTransformation.get_DeviceFrame (). Left; Realworlddisplayextent=PActiveView.ScreenDisplay.DisplayTransformation.VisibleBounds.Width; Sizeofonepixel= Realworlddisplayextent/pixelextent; returnPixelunits *Sizeofonepixel;}

ArcGIS Engine capture