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Matrix.Identity Property

Gets an identity Matrix.

Namespace:  System.Windows.Media
Assembly:  System.Windows (in System.Windows.dll)

public static Matrix Identity { get; }

Property Value

Type: System.Windows.Media.Matrix
An identity matrix.

An identity matrix has a value of 1 in coefficients [1,1],[2,2],[3,3] and a value of 0 in the rest of the coefficients. This correlates to setting M11 and M22 to 1 and M12, M21, OffsetX, and OffsetY to 0. In an affine matrix, which is the implementation that Silverlight uses for the Matrix structure, coefficients [3,1],[3,2],[3,3] are implied to always have the values 0,0,1 respectively.

1

0

0

0

1

0

0

0

1

For an identity matrix, the ToString method returns the string "Identity" instead of the coefficients of the Matrix.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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