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36 lines
2.7 KiB
Markdown
36 lines
2.7 KiB
Markdown
---
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title: "How to: Rotate an Object by Using a Geometric Path"
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ms.date: "03/30/2017"
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dev_langs:
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- "csharp"
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- "vb"
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helpviewer_keywords:
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- "geometric paths [WPF], rotating objects by"
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- "rotating objects by geometric paths [WPF]"
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ms.assetid: cb31ca4d-f05a-4c6b-9a18-4b6faaf38d45
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---
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# How to: Rotate an Object by Using a Geometric Path
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This example shows how to rotate (pivot) an object along a geometric path that is defined by a <xref:System.Windows.Media.PathGeometry> object.
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## Example
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The following example uses three <xref:System.Windows.Media.Animation.DoubleAnimationUsingPath> objects to move a rectangle along a geometric path.
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- The first <xref:System.Windows.Media.Animation.DoubleAnimationUsingPath> animates a <xref:System.Windows.Media.RotateTransform> that is applied to the rectangle. The animation generates angle values. It makes the rectangle rotate (pivot) along the contours of the path.
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- The other two objects animate the <xref:System.Windows.Media.TranslateTransform.X%2A> and <xref:System.Windows.Media.TranslateTransform.Y%2A> values of a <xref:System.Windows.Media.TranslateTransform> that is applied to the rectangle. They make the rectangle move horizontally and vertically along the path.
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[!code-xaml[PathAnimationGallery_snippet#RotateAnimationUsingPathWholePage](~/samples/snippets/csharp/VS_Snippets_Wpf/PathAnimationGallery_snippet/CS/rotateanimationusingpathexample.xaml#rotateanimationusingpathwholepage)]
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[!code-csharp[PathAnimationGallery_procedural_snip#RotateAnimationUsingPathWholePage](~/samples/snippets/csharp/VS_Snippets_Wpf/PathAnimationGallery_procedural_snip/CSharp/RotateAnimationUsingPathExample.cs#rotateanimationusingpathwholepage)]
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[!code-vb[PathAnimationGallery_procedural_snip#RotateAnimationUsingPathWholePage](~/samples/snippets/visualbasic/VS_Snippets_Wpf/PathAnimationGallery_procedural_snip/VisualBasic/RotateAnimationUsingPathExample.vb#rotateanimationusingpathwholepage)]
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Another way to rotate an object by using a geometric path is to use a <xref:System.Windows.Media.Animation.MatrixAnimationUsingPath> object and set its <xref:System.Windows.Media.Animation.MatrixAnimationUsingPath.DoesRotateWithTangent%2A> property to `true`. For more information and an example, see [Rotate an Object by Using a Geometric Path (Matrix Animation)](how-to-rotate-an-object-by-using-a-geometric-path-matrix-animation.md).
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For the complete sample, see [Path Animation Sample](https://github.com/Microsoft/WPF-Samples/tree/master/Animation/PathAnimations).
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## See also
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- [Animation Overview](animation-overview.md)
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- [Path Animation Sample](https://github.com/Microsoft/WPF-Samples/tree/master/Animation/PathAnimations)
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- [Path Animation How-to Topics](path-animation-how-to-topics.md)
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