Export (0) Print
Expand All
0 out of 4 rated this helpful - Rate this topic

Graphics.MultiplyTransform Method (Matrix, MatrixOrder)

Multiplies the world transformation of this Graphics and specified the Matrix in the specified order.

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

public void MultiplyTransform (
	Matrix matrix,
	MatrixOrder order
)
public void MultiplyTransform (
	Matrix matrix, 
	MatrixOrder order
)
public function MultiplyTransform (
	matrix : Matrix, 
	order : MatrixOrder
)
Not applicable.

Parameters

matrix

4x4 Matrix that multiplies the world transformation.

order

Member of the MatrixOrder enumeration that determines the order of the multiplication.

A value ofPrepend for the order parameter specifies that the order of the multiplication is matrix x world transformation. A value of Append for order specifies that the order of the multiplication is world transformation x matrix.

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

  • Creates a transformMatrix matrix (a two by two identity matrix plus a zero-translation vector).

  • Translates the transform matrix by a vector (200, 100).

  • Rotates the world transformation matrix of the Windows Form by 30 degrees, prepending the rotation matrix for 30 degrees to the form's transformation matrix.

  • Multiplies the rotated world transformation matrix by the translated transformMatrix, appending the transformMatrix to the world transformation matrix.

  • Draws a rotated, translated ellipse.

private void MultiplyTransformMatrixOrder(PaintEventArgs e)
{

    // Create transform matrix.
    Matrix transformMatrix = new Matrix();

    // Translate matrix, prepending translation vector.
    transformMatrix.Translate(200.0F, 100.0F);

    // Rotate transformation matrix of graphics object,

    // prepending rotation matrix.
    e.Graphics.RotateTransform(30.0F);

    // Multiply (append to) transformation matrix of

    // graphics object to translate graphics transformation.
    e.Graphics.MultiplyTransform(transformMatrix, MatrixOrder.Append);

    // Draw rotated, translated ellipse.
    e.Graphics.DrawEllipse(new Pen(Color.Blue, 3), -80, -40, 160, 80);
}

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.