GraphicsPath.Transform(Matrix) Method

Definition

Namespace:

System.Drawing.Drawing2D

Assembly:

System.Drawing.Common.dll

Source:

GraphicsPath.cs

Applies a transform matrix to this GraphicsPath.

public:
 void Transform(System::Drawing::Drawing2D::Matrix ^ matrix);

public void Transform (System.Drawing.Drawing2D.Matrix matrix);

member this.Transform : System.Drawing.Drawing2D.Matrix -> unit

Public Sub Transform (matrix As Matrix)

Parameters

matrix

Matrix

A Matrix that represents the transformation to apply.

Examples

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, an OnPaint event object. The code performs the following actions:

• Creates a path and adds an ellipse to the path.

• Draws path to the screen.

• Creates a transform matrix to translate the path 100 units in the x-axis direction.

• Draws the transformed path to the screen.

Notice that the original ellipse is drawn in black and the transformed ellipse is drawn in red.

private:
   void TransformExample( PaintEventArgs^ e )
   {
      // Create a path and add and ellipse.
      GraphicsPath^ myPath = gcnew GraphicsPath;
      myPath->AddEllipse( 0, 0, 100, 200 );

      // Draw the starting position to screen.
      e->Graphics->DrawPath( Pens::Black, myPath );

      // Move the ellipse 100 points to the right.
      Matrix^ translateMatrix = gcnew Matrix;
      translateMatrix->Translate( 100, 0 );
      myPath->Transform(translateMatrix);

      // Draw the transformed ellipse to the screen.
      e->Graphics->DrawPath( gcnew Pen( Color::Red,2.0f ), myPath );
   }

private void TransformExample(PaintEventArgs e)
{
             
    // Create a path and add and ellipse.
    GraphicsPath myPath = new GraphicsPath();
    myPath.AddEllipse(0, 0, 100, 200);
             
    // Draw the starting position to screen.
    e.Graphics.DrawPath(Pens.Black, myPath);
             
    // Move the ellipse 100 points to the right.
    Matrix translateMatrix = new Matrix();
    translateMatrix.Translate(100, 0);
    myPath.Transform(translateMatrix);
             
    // Draw the transformed ellipse to the screen.
    e.Graphics.DrawPath(new Pen(Color.Red, 2), myPath);
}

Public Sub TransformExample(ByVal e As PaintEventArgs)

    ' Create a path and add and ellipse.
    Dim myPath As New GraphicsPath
    myPath.AddEllipse(0, 0, 100, 200)

    ' Draw the starting position to screen.
    e.Graphics.DrawPath(Pens.Black, myPath)

    ' Move the ellipse 100 points to the right.
    Dim translateMatrix As New Matrix
    translateMatrix.Translate(100, 0)
    myPath.Transform(translateMatrix)

    ' Draw the transformed ellipse to the screen.
    e.Graphics.DrawPath(New Pen(Color.Red, 2), myPath)
End Sub

Remarks

The transformation can scale, translate, rotate, or skew the GraphicsPath.