RotateTransform Method (Single, MatrixOrder)
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Graphics.RotateTransform Method (Single, MatrixOrder)

Applies the specified rotation to the transformation matrix of this Graphics in the specified order.

Namespace:  System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll)

public void RotateTransform(
	float angle,
	MatrixOrder order


Type: System.Single
Angle of rotation in degrees.
Type: System.Drawing.Drawing2D.MatrixOrder
Member of the MatrixOrder enumeration that specifies whether the rotation is appended or prepended to the matrix transformation.

The rotation operation consists of multiplying the transformation matrix by a matrix whose elements are derived from the angle parameter. This method prepends or appends the transformation matrix of the Graphics by the rotation matrix according to the order parameter.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. The code performs the following actions:

  • Translates the world transformation matrix of the Windows Form by the vector (100, 0).

  • Rotates the world transform by an angle of 30 degrees, appending the rotation matrix to the world transformation matrix with Append.

  • Draws a translated, rotated ellipse with a blue pen.

private void RotateTransformAngleMatrixOrder(PaintEventArgs e)

    // Set world transform of graphics object to translate.
    e.Graphics.TranslateTransform(100.0F, 0.0F);

    // Then to rotate, appending rotation matrix.
    e.Graphics.RotateTransform(30.0F, MatrixOrder.Append);

    // Draw translated, rotated ellipse to screen.
    e.Graphics.DrawEllipse(new Pen(Color.Blue, 3), 0, 0, 200, 80);

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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