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