Graphics::MultiplyTransform Method (Matrix^, MatrixOrder)
Multiplies the world transformation of this Graphics and specified the Matrix in the specified order.
Assembly: System.Drawing (in System.Drawing.dll)
Parameters
- matrix
-
Type:
System.Drawing.Drawing2D::Matrix^
4x4 Matrix that multiplies the world transformation.
- order
-
Type:
System.Drawing.Drawing2D::MatrixOrder
Member of the MatrixOrder enumeration that determines the order of the multiplication.
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.
public: void MultiplyTransformMatrixOrder( PaintEventArgs^ e ) { // Create transform matrix. Matrix^ transformMatrix = gcnew 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( gcnew Pen( Color::Blue,3.0f ), -80, -40, 160, 80 ); }
Available since 1.1