Matrix.RotateAt(Double, Double, Double) Method

Definition

Namespace:

System.Windows.Media

Assembly:

WindowsBase.dll

Rotates this matrix about the specified point.

public:
 void RotateAt(double angle, double centerX, double centerY);

public void RotateAt (double angle, double centerX, double centerY);

member this.RotateAt : double * double * double -> unit

Public Sub RotateAt (angle As Double, centerX As Double, centerY As Double)

Parameters

angle

Double

The angle, in degrees, by which to rotate this matrix.

centerX

Double

The x-coordinate of the point about which to rotate this matrix.

centerY

Double

The y-coordinate of the point about which to rotate this matrix.

Examples

The following example shows how to rotate a Matrix about a specified point.

private Matrix rotateAboutPointExample()
{
    
    // Creating a Matrix structure.
    Matrix myMatrix = new Matrix(5, 10, 15, 20, 25, 30);
    
    // Rotate the matrix 90 degrees about the point (100,100).
    // myMatrix becomes equal to (-10, 4, -20, 15, 170, 25).
    myMatrix.RotateAt(90, 100, 100);
    
    return myMatrix; 
}