//绘制导入的范围
private void drawgeometryXOR(IEnvelope pPolygon, IScreenDisplay pScreenDisplay)
{
ISimpleFillSymbol pFillSymbol = new SimpleFillSymbolClass();
ISimpleLineSymbol pLineSymbol = new SimpleLineSymbolClass();
try
{
//颜色对象
IRgbColor pRGBColor = new RgbColorClass();
pRGBColor.UseWindowsDithering = false;
ISymbol pSymbol = (ISymbol)pFillSymbol;
pSymbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;
pRGBColor.Red = 255;
pRGBColor.Green = 170;
pRGBColor.Blue = 0;
pLineSymbol.Color = pRGBColor;
pLineSymbol.Width = 0.8;
pLineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;
pFillSymbol.Outline = pLineSymbol;
pFillSymbol.Color = pRGBColor;
pFillSymbol.Style = esriSimpleFillStyle.esriSFSDiagonalCross;
pScreenDisplay.StartDrawing(_axmapcontrol.ActiveView.ScreenDisplay.hDC, -1); //esriScreenCache.esriNoScreenCache -1
pScreenDisplay.SetSymbol(pSymbol);
//不存在已画出的多边形
if (pPolygon != null)
{
pScreenDisplay.DrawRectangle(pPolygon);
m_Polygon = pPolygon;
}
//存在已画出的多边形
else
{
if (m_Polygon != null)
{
pScreenDisplay.DrawRectangle(m_Polygon);
}
}
pScreenDisplay.FinishDrawing();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "提示");
pFillSymbol = null;
}
}
/// <summary>
/// 绘制线、矩形和面的函数
/// </summary>
/// <param name="pGeometry"></param>
/// <param name="pScrDisplay"></param>
public static void DrawGeometryXOR(IGeometry pGeometry, IScreenDisplay pScrDisplay)
{
if (pGeometry == null || pScrDisplay == null || pGeometry.GeometryType == esriGeometryType.esriGeometryPoint)
{
return;
}
IFillSymbol pFillSymbol;
ILineSymbol pLineSymbol;
ISymbol pSymbol;
IRgbColor pRGBColor;
ISymbol pLSymbol;
IPolygon pPolygon;
IEnvelope pEnvelope;
IPolyline pPolyline;
try
{
pRGBColor = new RgbColorClass();
pRGBColor.UseWindowsDithering = false;
pRGBColor.Red = 45;
pRGBColor.Green = 45;
pRGBColor.Blue = 45;
pFillSymbol = new SimpleFillSymbolClass();
pSymbol = (ISymbol)pFillSymbol;
pSymbol.ROP2 = esriRasterOpCode.esriROPXOrPen;
pFillSymbol.Color = (IColor)pRGBColor;
pLineSymbol = pFillSymbol.Outline;
pLSymbol = (ISymbol)pLineSymbol;
pLSymbol.ROP2 = esriRasterOpCode.esriROPXOrPen;
pRGBColor.Red = 145;
pRGBColor.Green = 145;
pRGBColor.Blue = 145;
pLineSymbol.Color = (IColor)pRGBColor;
pLineSymbol.Width = 0.8;
pFillSymbol.Outline = pLineSymbol;
pScrDisplay.StartDrawing(0, -1); //esriScreenCache.esriNoScreenCache -1
if (pGeometry.GeometryType == esriGeometryType.esriGeometryPolyline)
{
pScrDisplay.SetSymbol((ISymbol)pLineSymbol);
pPolyline = (IPolyline)pGeometry;
pScrDisplay.DrawPolyline(pPolyline);
}
else if (pGeometry.GeometryType == esriGeometryType.esriGeometryEnvelope)
{
pScrDisplay.SetSymbol(pSymbol);
pEnvelope = (IEnvelope)pGeometry;
pScrDisplay.DrawRectangle(pEnvelope);
}
else
{
pScrDisplay.SetSymbol(pSymbol);
pPolygon = (IPolygon)pGeometry;
pScrDisplay.DrawPolygon(pPolygon);
}
pScrDisplay.FinishDrawing();
}
catch (Exception ex)
{
MessageBox.Show("绘制缓冲范围出错:" + ex.Message, "提示");
}
finally
{
pFillSymbol = null;
pLineSymbol = null;
pSymbol = null;
pRGBColor = null;
pLSymbol = null;
}
}
