private ICurve ConstructOffset(IPolyline inPolyline, double distanceFromCurve, bool isRightSide, double elevation) { if (inPolyline == null || inPolyline.IsEmpty) { return(null); } object Missing = Type.Missing; IPolyline pPoly = new ESRI.ArcGIS.Geometry.Polyline() as IPolyline; IConstructCurve constructCurve = (IConstructCurve)pPoly; if (!isRightSide) { distanceFromCurve = -distanceFromCurve; } constructCurve.ConstructOffset(inPolyline, distanceFromCurve, ref Missing, ref Missing); IRgbColor rgbColor = GetColor(0, 0, 0); AddTempolralPathToMap(m_MapMapControl, constructCurve as IGeometry, rgbColor); AddTempolralPathToGlobe(constructCurve as IGeometry, elevation); return(constructCurve as ICurve); }
private Image SymbolToBitmap(IGradientFillSymbol iSymbol, int iStyle, int iWidth, int iHeight) { IntPtr iHDC = new IntPtr(); Bitmap iBitmap = new Bitmap(iWidth, iHeight); Graphics iGraphics = System.Drawing.Graphics.FromImage(iBitmap); tagRECT itagRECT; IEnvelope iEnvelope = new EnvelopeClass() as IEnvelope; IDisplayTransformation iDisplayTransformation; IPoint iPoint; IGeometryCollection iPolyline; IGeometryCollection iPolygon; IRing iRing; ISegmentCollection iSegmentCollection; IGeometry iGeometry = null; object Missing = Type.Missing; iEnvelope.PutCoords(0, 0, iWidth, iHeight); itagRECT.left = 0; itagRECT.right = iWidth; itagRECT.top = 0; itagRECT.bottom = iHeight; iDisplayTransformation = new DisplayTransformationClass(); iDisplayTransformation.VisibleBounds = iEnvelope; iDisplayTransformation.Bounds = iEnvelope; iDisplayTransformation.set_DeviceFrame(ref itagRECT); iDisplayTransformation.Resolution = iGraphics.DpiX / 100000; iHDC = iGraphics.GetHdc(); //获取Geometry; if (iSymbol is ESRI.ArcGIS.Display.IMarkerSymbol) { switch (iStyle) { case 0: iPoint = new ESRI.ArcGIS.Geometry.Point(); iPoint.PutCoords(iWidth / 2, iHeight / 2); iGeometry = iPoint; break; default: break; } } else { if (iSymbol is ESRI.ArcGIS.Display.ILineSymbol) { iSegmentCollection = new ESRI.ArcGIS.Geometry.Path() as ISegmentCollection; iPolyline = new ESRI.ArcGIS.Geometry.Polyline() as IGeometryCollection; switch (iStyle) { case 0: iSegmentCollection.AddSegment(CreateLine(0, iHeight / 2, iWidth, iHeight / 2) as ISegment, ref Missing, ref Missing); iPolyline.AddGeometry(iSegmentCollection as IGeometry, ref Missing, ref Missing); iGeometry = iPolyline as IGeometry; break; case 1: iSegmentCollection.AddSegment(CreateLine(0, iHeight / 4, iWidth / 4, 3 * iHeight / 4) as ISegment, ref Missing, ref Missing); iSegmentCollection.AddSegment(CreateLine(iWidth / 4, 3 * iHeight / 4, 3 * iWidth / 4, iHeight / 4) as ISegment, ref Missing, ref Missing); iSegmentCollection.AddSegment(CreateLine(3 * iWidth / 4, iHeight / 4, iWidth, 3 * iHeight / 4) as ISegment, ref Missing, ref Missing); iPolyline.AddGeometry(iSegmentCollection as IGeometry, ref Missing, ref Missing); iGeometry = iPolyline as IGeometry; break; default: break; } } else if (iSymbol is ESRI.ArcGIS.Display.IFillSymbol) { iSegmentCollection = new ESRI.ArcGIS.Geometry.Ring() as ISegmentCollection; iPolygon = new ESRI.ArcGIS.Geometry.Polygon() as IGeometryCollection; switch (iStyle) { case 0: iSegmentCollection.AddSegment(CreateLine(5, iHeight - 5, iWidth - 6, iHeight - 5) as ISegment, ref Missing, ref Missing); iSegmentCollection.AddSegment(CreateLine(iWidth - 6, iHeight - 5, iWidth - 6, 6) as ISegment, ref Missing, ref Missing); iSegmentCollection.AddSegment(CreateLine(iWidth - 6, 6, 5, 6) as ISegment, ref Missing, ref Missing); iRing = iSegmentCollection as IRing; iRing.Close(); iPolygon.AddGeometry(iSegmentCollection as IGeometry, ref Missing, ref Missing); iGeometry = iPolygon as IGeometry; break; default: break; } } else if (iSymbol is ESRI.ArcGIS.Display.ISimpleTextSymbol) { switch (iStyle) { case 0: iPoint = new ESRI.ArcGIS.Geometry.Point(); iPoint.PutCoords(iWidth / 2, iHeight / 2); iGeometry = iPoint; break; default: break; } } }//////////////////////// if (iGeometry == null) { MessageBox.Show("几何对象不符合!", "错误"); return(null); } ISymbol pOutputSymbol = iSymbol as ISymbol; pOutputSymbol.SetupDC(iHDC.ToInt32(), iDisplayTransformation); pOutputSymbol.Draw(iGeometry); pOutputSymbol.ResetDC(); iGraphics.ReleaseHdc(iHDC); iGraphics.Dispose(); return(iBitmap); }