Question

跟踪如何以编程方式将路径字符串转换为WPF中的路径对象并不是很难，但是有一个内置函数可以将几何体或路径转换回迷你语言中的字符串吗？

Answer 1

编辑：刚才看到这个我认为应该有一个名为GeometryConverter的类应该可以做到这一点，确实有。只需创建其中一个并在要转换的几何体上使用ConvertToString。

您可以使用XamlWriter类将对象输出为XAML，几何体将自动缩减为迷你语言。

e.g。如果这是你的意见：

<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>

...然后你把它序列化......

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);

...你得到以下信息：

<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>

所有PathGeometry现在都是迷你语言。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XmlDocument来获取数据。

将几何/路径转换为Minilanguage字符串？

1 个答案: