我希望将一组具有X,Y,Radius属性的视图模型与使用Union的圆形CombinedGeometry绑定。但是,似乎CombinedGeometry仅支持2个几何体。
有没有办法绕过这个限制?
我想要实现的示例:
<Path Stroke="Black" StrokeThickness="1" Fill="#CCCCFF">
<Path.Data>
<CombinedGeometry GeometryCombineMode="Union" ItemsSource="{Binding Circles}">
<CombinedGeometry.Template>
<EllipseGeometry RadiusX="{Binding Radius}" RadiusY="{Binding Radius}" CenterX="{Binding X}" CenterY="{Binding Y}"/>
</CombinedGeometry.Template>
</CombinedGeometry>
</Path.Data>
</Path>
实际上,可以在CombinedGeometry内部使用CombinedGeometries,如下所示。但是,我不知道如何设置才能轻松绑定。
<Path Stroke="Black" StrokeThickness="1" Fill="#CCCCFF">
<Path.Data>
<!-- Combines two geometries using the union combine mode. -->
<CombinedGeometry GeometryCombineMode="Union">
<CombinedGeometry.Geometry1>
<CombinedGeometry GeometryCombineMode="Union">
<CombinedGeometry.Geometry1>
<EllipseGeometry RadiusX="50" RadiusY="50" Center="200,200" />
</CombinedGeometry.Geometry1>
<CombinedGeometry.Geometry2>
<EllipseGeometry RadiusX="50" RadiusY="50" Center="125,200" />
</CombinedGeometry.Geometry2>
</CombinedGeometry>
</CombinedGeometry.Geometry1>
<CombinedGeometry.Geometry2>
<CombinedGeometry GeometryCombineMode="Union">
<CombinedGeometry.Geometry1>
<EllipseGeometry RadiusX="50" RadiusY="50" Center="100,100" />
</CombinedGeometry.Geometry1>
<CombinedGeometry.Geometry2>
<EllipseGeometry RadiusX="50" RadiusY="50" Center="150,120" />
</CombinedGeometry.Geometry2>
</CombinedGeometry>
</CombinedGeometry.Geometry2>
</CombinedGeometry>
</Path.Data>
</Path>
<EllipseGeometry RadiusX="{Binding Path=ViewModelCollection[0].RadiusX}" ...
其中 ViewModelCollection 是一个索引器 - 你是指像这样的东西吗? - Gishu