在.NET中使用GDI+为MapObjects构建三维直方图统计专题

           CurrentX = CurrentX +iBarWidth; 
         //斜面阴影部分
         System.Drawing.PointF[] pShadow= new System.Drawing.PointF[4];
         pShadow[0].X = CurrentX;
         pShadow[0].Y = CurrentY;
         pShadow[1].X = CurrentX + iBarWidth/2 ;
         pShadow[1].Y = CurrentY - iBarWidth/2;
         pShadow[2].X = CurrentX + iBarWidth/2 ;
         pShadow[2].Y = CurrentY - iBarHeight - iBarWidth * 1/2;
         pShadow[3].X = CurrentX  ;
         pShadow[3].Y = CurrentY - iBarHeight;                  

         //绘制3D图形 包括正面、斜面、顶部
         g.FillPolygon(tempBrush,pRect);               
         g.FillPolygon(new HatchBrush(HatchStyle.Percent50,tempBrush.Color),pTopFill);
         g.FillPolygon(tempBrush,pShadow);
         //如果设置了绘制边界线 则绘制

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