Andy (Steve) De George
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title, description, ms.date, ms.custom, dev_langs, helpviewer_keywords, ms.assetid
| title | description | ms.date | ms.custom | dev_langs | helpviewer_keywords | ms.assetid | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| How to: Create a Shape Using a StreamGeometry | Learn how to create a Shape using a StreamGeometry. | 03/30/2017 | devdivchpfy22 |
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08f7c8ce-074b-49cd-9aba-cc9592d4ee51 |
How to: Create a Shape Using a StreamGeometry
xref:System.Windows.Media.StreamGeometry is lightweight alternative to xref:System.Windows.Media.PathGeometry for creating geometric shapes. Use a xref:System.Windows.Media.StreamGeometry when you need to describe a complex geometry but do not want the overhead of supporting data binding, animation, or modification. For example, because of its efficiency, the xref:System.Windows.Media.StreamGeometry class is a good choice for describing adorners.
Create a triangular StreamGeometry
The following example uses attribute syntax to create a triangular xref:System.Windows.Media.StreamGeometry in XAML.
[!code-xamlGeometriesMiscSnippets_snip#StreamGeometryTriangleExampleWholePage]
For more information about xref:System.Windows.Media.StreamGeometry attribute syntax, see the Path Markup Syntax page.
Use a StreamGeometry to define a triangle
The next example uses a xref:System.Windows.Media.StreamGeometry to define a triangle in code. First, the example creates a xref:System.Windows.Media.StreamGeometry, then obtains a xref:System.Windows.Media.StreamGeometryContext and uses it to describe the triangle.
[!code-csharpGeometriesMiscSnippets_procedural_snip#StreamGeometryTriangleExampleWholePage] [!code-vbGeometriesMiscSnippets_procedural_snip#StreamGeometryTriangleExampleWholePage]
Create a geometric shape in code
The next example creates a method that uses a xref:System.Windows.Media.StreamGeometry and xref:System.Windows.Media.StreamGeometryContext to define a geometric shape based on specified parameters.
[!code-csharpGeometriesMiscSnippets_procedural_snip#StreamGeometryExampleWholePage] [!code-vbGeometriesMiscSnippets_procedural_snip#StreamGeometryExampleWholePage]