Region.Transform(Matrix) Metodo

Definizione

Spazio dei nomi:

System.Drawing

Assembly:

System.Drawing.Common.dll

Pacchetto:

System.Drawing.Common v9.0.0-preview.6.24327.6

Origine:

Region.cs

Trasforma questo Region dall'Matrixspecificato.

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)

Parametri

matrix

Matrix

Il Matrix in base al quale trasformare questo Region.

Eccezioni

ArgumentNullException

matrix è null.

Esempio

L'esempio di codice seguente è progettato per l'uso con Windows Form e richiede PaintEventArgse, che è un parametro del gestore eventi Paint. Il codice esegue le azioni seguenti:

• Crea un rettangolo e lo disegna sullo schermo in blu.

• Crea un'area dal rettangolo.

• Crea una matrice di trasformazione e la imposta su 45 gradi.

• Applica la trasformazione all'area.

• Riempie l'area trasformata con rosso e disegna l'area trasformata sullo schermo in rosso.

Si noti che il rettangolo rosso viene ruotato di 45 gradi dal rettangolo originale, mostrato in blu.

public:
   void TransformExample( PaintEventArgs^ e )
   {
      
      // Create the first rectangle and draw it to the screen in blue.
      Rectangle regionRect = Rectangle(100,50,100,100);
      e->Graphics->DrawRectangle( Pens::Blue, regionRect );
      
      // Create a region using the first rectangle.
      System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( regionRect );
      
      // Create a transform matrix and set it to have a 45 degree
      // rotation.
      Matrix^ transformMatrix = gcnew Matrix;
      transformMatrix->RotateAt( 45, Point(100,50) );
      
      // Apply the transform to the region.
      myRegion->Transform(transformMatrix);
      
      // Fill the transformed region with red and draw it to the screen
      // in red.
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Red );
      e->Graphics->FillRegion( myBrush, myRegion );
   }

public void TransformExample(PaintEventArgs e)
{
             
    // Create the first rectangle and draw it to the screen in blue.
    Rectangle regionRect = new Rectangle(100, 50, 100, 100);
    e.Graphics.DrawRectangle(Pens.Blue, regionRect);
             
    // Create a region using the first rectangle.
    Region myRegion = new Region(regionRect);
             
    // Create a transform matrix and set it to have a 45 degree
             
    // rotation.
    Matrix transformMatrix = new Matrix();
    transformMatrix.RotateAt(45, new Point(100, 50));
             
    // Apply the transform to the region.
    myRegion.Transform(transformMatrix);
             
    // Fill the transformed region with red and draw it to the screen
             
    // in red.
    SolidBrush myBrush = new SolidBrush(Color.Red);
    e.Graphics.FillRegion(myBrush, myRegion);
}

Public Sub TransformExample(ByVal e As PaintEventArgs)

    ' Create the first rectangle and draw it to the screen in blue.
    Dim regionRect As New Rectangle(100, 50, 100, 100)
    e.Graphics.DrawRectangle(Pens.Blue, regionRect)

    ' Create a region using the first rectangle.
    Dim myRegion As New [Region](regionRect)

    ' Create a transform matrix and set it to have a 45 degree
    ' rotation.
    Dim transformMatrix As New Matrix
    transformMatrix.RotateAt(45, New PointF(100, 50))

    ' Apply the transform to the region.
    myRegion.Transform(transformMatrix)

    ' Fill the transformed region with red and draw it to the
    ' screen in red.
    Dim myBrush As New SolidBrush(Color.Red)
    e.Graphics.FillRegion(myBrush, myRegion)
End Sub