在WPF中,编程方式将路径字符串转换为路径对象并不太困难,但是否有内置函数可以将几何体或路径转换回迷你语言的字符串?
在WPF中,编程方式将路径字符串转换为路径对象并不太困难,但是否有内置函数可以将几何体或路径转换回迷你语言的字符串?
编辑: 刚刚查看这篇文章,我认为应该有一个名为GeometryConverter
的类可以实现这个功能,而事实也的确如此。只需创建一个此类的对象,并在要转换的几何图形上使用ConvertToString
即可。
您可以使用XamlWriter
类将对象输出为XAML格式,几何图形将自动转化为迷你语言。
例如, 如果这是您的输入:
<DrawingImage x:Name="segmentsDrawing">
<DrawingImage.Drawing>
<DrawingGroup>
<GeometryDrawing Brush="Red">
<GeometryDrawing.Pen>
<Pen Brush="Black" />
</GeometryDrawing.Pen>
<GeometryDrawing.Geometry>
<PathGeometry>
<PathFigure StartPoint="100,100">
<PathFigure.Segments>
<LineSegment Point="100,0"/>
<ArcSegment Point="186.6,150" SweepDirection="Clockwise" Size="100,100"/>
<LineSegment Point="100,100"/>
</PathFigure.Segments>
</PathFigure>
</PathGeometry>
</GeometryDrawing.Geometry>
</GeometryDrawing>
<GeometryDrawing Brush="Blue">
<GeometryDrawing.Pen>
<Pen Brush="Black"/>
</GeometryDrawing.Pen>
<GeometryDrawing.Geometry>
<PathGeometry>
<PathFigure StartPoint="100,100">
<PathFigure.Segments>
<LineSegment Point="186.6,150"/>
<ArcSegment Point="13.4,150" SweepDirection="Clockwise" Size="100,100"/>
<LineSegment Point="100,100"/>
</PathFigure.Segments>
</PathFigure>
</PathGeometry>
</GeometryDrawing.Geometry>
</GeometryDrawing>
<GeometryDrawing Brush="Green">
<GeometryDrawing.Pen>
<Pen Brush="Black"/>
</GeometryDrawing.Pen>
<GeometryDrawing.Geometry>
<PathGeometry>
<PathFigure StartPoint="100,100">
<PathFigure.Segments>
<LineSegment Point="13.4,150"/>
<ArcSegment Point="100,0" SweepDirection="Clockwise" Size="100,100"/>
<LineSegment Point="100,100"/>
</PathFigure.Segments>
</PathFigure>
</PathGeometry>
</GeometryDrawing.Geometry>
</GeometryDrawing>
</DrawingGroup>
</DrawingImage.Drawing>
</DrawingImage>
...然后将其序列化...
XmlTextWriter writer = new XmlTextWriter(@"C:\Users\Public\Test.xml", new UTF8Encoding());
writer.Formatting = Formatting.Indented;
writer.Indentation = 1;
writer.IndentChar = '\t';
XamlWriter.Save(segmentsDrawing, writer);
如果您按照以下步骤操作,您将得到以下结果:
<DrawingImage xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<DrawingImage.Drawing>
<DrawingGroup>
<DrawingGroup.Children>
<GeometryDrawing Brush="#FFFF0000">
<GeometryDrawing.Pen>
<Pen Brush="#FF000000" />
</GeometryDrawing.Pen>
<GeometryDrawing.Geometry>
<PathGeometry Figures="M100,100L100,0A100,100,0,0,1,186.6,150L100,100" />
</GeometryDrawing.Geometry>
</GeometryDrawing>
<GeometryDrawing Brush="#FF0000FF">
<GeometryDrawing.Pen>
<Pen Brush="#FF000000" />
</GeometryDrawing.Pen>
<GeometryDrawing.Geometry>
<PathGeometry Figures="M100,100L186.6,150A100,100,0,0,1,13.4,150L100,100" />
</GeometryDrawing.Geometry>
</GeometryDrawing>
<GeometryDrawing Brush="#FF008000">
<GeometryDrawing.Pen>
<Pen Brush="#FF000000" />
</GeometryDrawing.Pen>
<GeometryDrawing.Geometry>
<PathGeometry Figures="M100,100L13.4,150A100,100,0,0,1,100,0L100,100" />
</GeometryDrawing.Geometry>
</GeometryDrawing>
</DrawingGroup.Children>
</DrawingGroup>
</DrawingImage.Drawing>
</DrawingImage>
现在所有的PathGeometry
都是用迷你语言编写的。如果您想立即在应用程序中使用它,我想您可以将其写入MemoryStream
,并通过从中创建一个XmlDocument
来获取数据。
Geometry.ToString
。 - Anes Hamdani