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43 lines
3.3 KiB
Markdown
43 lines
3.3 KiB
Markdown
---
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title: "How to: Create a Combined Geometry"
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ms.date: "03/30/2017"
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helpviewer_keywords:
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- "combining geometries [WPF]"
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- "graphics [WPF], combining geometries"
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- "geometries [WPF], combining"
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ms.assetid: 54c3277c-6b6e-4b25-91be-fda0bbc706b4
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---
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# How to: Create a Combined Geometry
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This example shows how to combine geometries. To combine two geometries, use a <xref:System.Windows.Media.CombinedGeometry> object. Set its <xref:System.Windows.Media.CombinedGeometry.Geometry1%2A> and <xref:System.Windows.Media.CombinedGeometry.Geometry2%2A> properties with the two geometries to combine, and set the <xref:System.Windows.Media.CombinedGeometry.GeometryCombineMode%2A> property, which determines how the geometries will be combined together, to `Union`, `Intersect`, `Exclude`, or `Xor`.
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To create a composite geometry from two or more geometries, use a <xref:System.Windows.Media.GeometryGroup>.
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## Example
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In the following example, a <xref:System.Windows.Media.CombinedGeometry> is defined with a geometry combine mode of `Exclude`. Both <xref:System.Windows.Media.CombinedGeometry.Geometry1%2A> and the <xref:System.Windows.Media.CombinedGeometry.Geometry2%2A> are defined as circles of the same radius, but with centers offset by 50.
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[!code-xaml[GeometrySample#21](~/samples/snippets/csharp/VS_Snippets_Wpf/GeometrySample/CS/combininggeometriesexample.xaml#21)]
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Combined Geometry Exclude
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In the following markup, a <xref:System.Windows.Media.CombinedGeometry> is defined with a combine mode of `Intersect`. Both <xref:System.Windows.Media.CombinedGeometry.Geometry1%2A> and the <xref:System.Windows.Media.CombinedGeometry.Geometry2%2A> are defined as circles of the same radius, but with centers offset by 50.
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[!code-xaml[GeometrySample#22](~/samples/snippets/csharp/VS_Snippets_Wpf/GeometrySample/CS/combininggeometriesexample.xaml#22)]
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Combined Geometry Intersect
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In the following markup, a <xref:System.Windows.Media.CombinedGeometry> is defined with a combine mode of `Union`. Both <xref:System.Windows.Media.CombinedGeometry.Geometry1%2A> and the <xref:System.Windows.Media.CombinedGeometry.Geometry2%2A> are defined as circles of the same radius, but with centers offset by 50.
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[!code-xaml[GeometrySample#23](~/samples/snippets/csharp/VS_Snippets_Wpf/GeometrySample/CS/combininggeometriesexample.xaml#23)]
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Combined Geometry Union
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In the following markup, a <xref:System.Windows.Media.CombinedGeometry> is defined with a combine mode of `Xor`. Both <xref:System.Windows.Media.CombinedGeometry.Geometry1%2A> and the <xref:System.Windows.Media.CombinedGeometry.Geometry2%2A> are defined as circles of the same radius, but with centers offset by 50.
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[!code-xaml[GeometrySample#24](~/samples/snippets/csharp/VS_Snippets_Wpf/GeometrySample/CS/combininggeometriesexample.xaml#24)]
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Combined Geometry Xor
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