我正在尝试使用WPF创建绘图应用程序。
我使用Canvas并在MouseMove事件触发的位置绘制Polyline。 但是在此过程中会创建一些工件:
StrokeThickness at 4 :
StrokeThickness at 15 :
红点代表MouseMove触发的位置,灰线当然是带有所有红点的折线。
为什么我得到这个?
答案 0 :(得分:6)
如果StrokeLineJoin=Miter
,您可以使用StrokeMiterLimit
来控制主教延伸的距离。
(StrokeLineJoin=Mitre
是PolyLine
)
或者,您可以使用StrokeLineJoin=Round
在细分之间进行良好的转换。
如果您想要不同目的,请使用StrokeStartLineCap
和StrokeEndLineCap
。
<Window x:Class="WpfApplication5.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="500" Width="500">
<Window.Resources>
<PointCollection x:Key="points">0,0 10,30 15,0 18,60 23,30 35,30 40,0 43,60 48,30 100,30</PointCollection>
</Window.Resources>
<StackPanel VerticalAlignment="Center" HorizontalAlignment="Center">
<StackPanel Orientation="Horizontal">
<Polyline Stroke="Gray" StrokeThickness="4" Points="{StaticResource points}" />
<Polyline Stroke="Gray" StrokeThickness="4" StrokeMiterLimit="10" Points="{StaticResource points}" />
<Polyline Stroke="Gray" StrokeThickness="4" StrokeMiterLimit="5" Points="{StaticResource points}" />
<Polyline Stroke="Gray" StrokeThickness="4" StrokeMiterLimit="1" Points="{StaticResource points}" />
</StackPanel>
<StackPanel Orientation="Horizontal" Margin="0,50,0,0">
<Polyline Stroke="Gray" StrokeThickness="10" Points="{StaticResource points}" />
<Polyline Stroke="Gray" StrokeThickness="10" StrokeMiterLimit="10" Points="{StaticResource points}" />
<Polyline Stroke="Gray" StrokeThickness="10" StrokeMiterLimit="5" Points="{StaticResource points}" />
<Polyline Stroke="Gray" StrokeThickness="10" StrokeMiterLimit="1" Points="{StaticResource points}" />
</StackPanel>
<StackPanel Orientation="Horizontal" Margin="0,50,0,0">
<Polyline Stroke="Gray" StrokeThickness="10" StrokeLineJoin="Miter" StrokeStartLineCap="Round" StrokeEndLineCap="Round" Points="{StaticResource points}" />
<Polyline Stroke="Gray" StrokeThickness="10" StrokeLineJoin="Bevel" StrokeStartLineCap="Round" StrokeEndLineCap="Round" Points="{StaticResource points}" />
<Polyline Stroke="Gray" StrokeThickness="10" StrokeLineJoin="Round" StrokeStartLineCap="Round" StrokeEndLineCap="Round" Points="{StaticResource points}" />
</StackPanel>
</StackPanel>
</Window>