Matrix.ScaleAt Method

Scales this Matrix by the specified amount about the specified point.

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

public void ScaleAt(
	double scaleX,
	double scaleY,
	double centerX,
	double centerY
)

Parameters

scaleX
Type: System.Double

The amount by which to scale this Matrix along the x-axis.

scaleY
Type: System.Double

The amount by which to scale this Matrix along the y-axis.

centerX
Type: System.Double

The x-coordinate of the scale operation's center point.

centerY
Type: System.Double

The y-coordinate of the scale operation's center point.

The following example shows how to scale a Matrix structure.


private Matrix scaleExample()
{
    Matrix myMatrix = new Matrix(5, 10, 15, 20, 25, 30);

    // Scale myMatrix by a horizontal factor of 2 
    // and a vertical factor of 4 about the origin. 
    // After this operation, 
    // myMatrix is equal to (10, 40, 30, 80, 50, 120)
    myMatrix.Scale(2, 4);

    return myMatrix;

}

private Matrix scaleAboutPointExample()
{
    Matrix myMatrix = new Matrix(5, 10, 15, 20, 25, 30);

    // Scale myMatrix by a horizontal factor of 2 
    // and a vertical factor of 4 about the  
    // point (100,100). 
    // After this operation, 
    // myMatrix is equal to (10, 40, 30, 80, -50, -180)
    myMatrix.ScaleAt(2, 4, 100, 100);

    return myMatrix;

}        

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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