[英]WPF - IsLargeArc=“false” doesn't work anymore
我最近想使用ArcSegment
,但是IsLargeArc="False"
不起作用。 这是带有已编译应用程序图片的示例代码。
图片是:
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="1000" Width="1000">
<Canvas Height="500" Width="500">
<Path Stroke="Red" StrokeThickness="3">
<Path.Data>
<PathGeometry>
<PathFigure StartPoint="50, 50">
<ArcSegment Point="300, 50" IsLargeArc="False" Size="50,25" />
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
<Path Stroke="Green" StrokeThickness="3">
<Path.Data>
<PathGeometry>
<PathFigure StartPoint="50, 250">
<ArcSegment Point="300, 250" IsLargeArc="True" Size="50,25" />
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
</Canvas>
</Window>
直到你的弧的大小不允许两个不同的渲染选项IsLargeArc
不会有任何区别
尝试这个xaml,我只是修改了你的xaml中的弧的大小
<Canvas Height="500"
Width="500">
<Path Stroke="Red"
StrokeThickness="3">
<Path.Data>
<PathGeometry>
<PathFigure StartPoint="50, 50">
<ArcSegment Point="300, 50"
IsLargeArc="False"
Size="150,25" />
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
<Path Stroke="Green"
StrokeThickness="3">
<Path.Data>
<PathGeometry>
<PathFigure StartPoint="50, 250">
<ArcSegment Point="300, 250"
IsLargeArc="True"
Size="150,25" />
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
</Canvas>
结果
也许您还没有完全理解ArcSegment.IsLargeArc
属性在链接页面中的作用:
对于特定位置,大小和旋转的大多数弧,可以绘制四种不同的弧;
IsLargeArc
和SweepDirection
属性指示要使用的弧。
因此,删除Point
设置并添加SweepDirection
设置,我们可以看到明显的区别:
<Canvas Height="500" Width="500">
<Path Stroke="Red" StrokeThickness="3">
<Path.Data>
<PathGeometry>
<PathFigure StartPoint="50, 50">
<ArcSegment IsLargeArc="False" Size="50,25" SweepDirection="Clockwise" />
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
<Path Stroke="Green" StrokeThickness="3">
<Path.Data>
<PathGeometry>
<PathFigure StartPoint="50, 250">
<ArcSegment IsLargeArc="True" Size="50,25" SweepDirection="Counterclockwise" />
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
</Canvas>
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