如何填充两行之间的区域GDI C＃ [英] How to fill region between two lines GDI C#

问题描述

我想用c＃填写ac＃graphics中两行之间的区域。





我正在使用drawlines方法绘制两条曲线

I want to fill region between two lines in in a c# graphics using c#.


i'm using drawlines method to draw the two curves

points.Add(new PointF(x + left, (float)y + trackHeight));

.. 。

...

if (points.Count > 1)
    {
      using (Pen pen = HandlerGraphs.GetPen(log.LineStyle, log.Brush, 2))
         {
           gr.DrawLines(pen, points.ToArray());
          }
 }

填充区域，我试过

for fill region, i tried

gr.FillClosedCurve(new SolidBrush(log.leftColorShading), leftPoints.ToArray(), FillMode.Alternate);

[ ^ ]



但需要超过两分钟（我的曲线由13255点组成）



任何想法？

[^]

but that take more than two minuts (my curve is composed from 13255 point)

any idea?

推荐答案

不，不要填充闭合曲线;相反，建立并填充该地区：

https://msdn.microsoft.com/en-us/library/system.drawing.graphics.fillregion%28v=vs.110%29.aspx [ ^ ]，

https： //msdn.microsoft.com/en-us/library/system.drawing.region%28v=vs.110%29.aspx [ ^ ]。

-SA

No, don't fill closed curve; instead, build and fill the region:
https://msdn.microsoft.com/en-us/library/system.drawing.graphics.fillregion%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.drawing.region%28v=vs.110%29.aspx[^].

—SA

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