如何使WPF形状完全填充

Question

我有一条这样的路，

<Path Stroke="Black" StrokeThickness="1" Fill="#CCCCFF">
    <Path.Data>
    <PathGeometry>
        <PathFigure StartPoint="6.0,12.5" >
            <LineSegment Point="50.0,6.0"></LineSegment>
            <LineSegment Point="94.0,12.5"></LineSegment>
            <LineSegment Point="60.0,19.0"></LineSegment>
            <LineSegment Point="20.0,19.0"></LineSegment>
            <LineSegment Point="6.0,12.5"></LineSegment>
        </PathFigure>
        <PathFigure StartPoint="7.97852754592896,12.2077178955078">
            <ArcSegment IsLargeArc="True" Point="4.02147245407104,12.7922821044922" RotationAngle="171.59663391113281" Size="2,4" SweepDirection="Counterclockwise"></ArcSegment>
            <ArcSegment IsLargeArc="True" Point="7.97852754592896,12.2077178955078" RotationAngle="171.59663391113281" Size="2,4" SweepDirection="Counterclockwise"></ArcSegment>
        </PathFigure>
        <PathFigure StartPoint="51.9785270690918,6.29228210449219">
            <ArcSegment IsLargeArc="True" Point="48.0214729309082,5.70771789550781" RotationAngle="188.40336608886719" Size="2,4" SweepDirection="Counterclockwise"></ArcSegment>
            <ArcSegment IsLargeArc="True" Point="51.9785270690918,6.29228210449219" RotationAngle="188.40336608886719" Size="2,4" SweepDirection="Counterclockwise"></ArcSegment>
        </PathFigure>
    </PathGeometry>
  </Path.Data>
</Path>

它表示一个多边形，其中几个角上有一些圆圈。

其中一个圆圈未正确填写。它恰好是覆盖多边形的圆的一部分。

它让我想起了使用XOR的图形。把两个放在一起，它们就相互抵消了。

如果我删除多边形(线段)，那么它工作得很好。

Answer 1

通过查看路径和使用PathGeometry.FillRule属性，我得到了这两个选项的相同结果。

这是使用具有单个Path的非零FilRule。

​

我能够获得您所期望的结果的唯一方法是使用Nonzero FillRule并为出现问题的PathFigure创建一个单独的路径。

这是将非零FillRule与单独的Path用于有问题的PathFigures。

​

<Path Stroke="Black" StrokeThickness="1" Fill="#CCCCFF">
    <Path.Data>
        <PathGeometry FillRule="Nonzero">
            <PathFigure StartPoint="6.0,12.5" >
                <LineSegment Point="50.0,6.0"></LineSegment>
                <LineSegment Point="94.0,12.5"></LineSegment>
                <LineSegment Point="60.0,19.0"></LineSegment>
                <LineSegment Point="20.0,19.0"></LineSegment>
                <LineSegment Point="6.0,12.5"></LineSegment>
            </PathFigure>
        </PathGeometry>
    </Path.Data>
</Path>
<Path Stroke="Black" StrokeThickness="1" Fill="#CCCCFF">
    <Path.Data >
        <PathGeometry FillRule="Nonzero">
            <PathFigure StartPoint="51.9785270690918,6.29228210449219">
                <ArcSegment IsLargeArc="True" Point="48.0214729309082,5.70771789550781" RotationAngle="188.40336608886719" Size="2,4" SweepDirection="Counterclockwise"></ArcSegment>
                <ArcSegment IsLargeArc="True" Point="51.9785270690918,6.29228210449219" RotationAngle="188.40336608886719" Size="2,4" SweepDirection="Counterclockwise"  ></ArcSegment>
            </PathFigure>
            <PathFigure StartPoint="7.97852754592896,12.2077178955078" >
                <ArcSegment IsLargeArc="True" Point="4.02147245407104,12.7922821044922" RotationAngle="171.59663391113281" Size="2,4" SweepDirection="Counterclockwise"></ArcSegment>
                <ArcSegment IsLargeArc="True" Point="7.97852754592896,12.2077178955078" RotationAngle="171.59663391113281" Size="2,4" SweepDirection="Counterclockwise"></ArcSegment>
            </PathFigure>
        </PathGeometry>
    </Path.Data>
</Path>

Answer 2

在您的PathGeometry元素上尝试设置

FillRule="NonZero"

缺省的EvenOdd给出了您所描述的异或行为。