PathGradientBrush.MultiplyTransform Méthode

Source:

PathGradientBrush.cs

Source:

PathGradientBrush.cs

Source:

PathGradientBrush.cs

Source:

PathGradientBrush.cs

Source:

PathGradientBrush.cs

public:
 void MultiplyTransform(System::Drawing::Drawing2D::Matrix ^ matrix, System::Drawing::Drawing2D::MatrixOrder order);

public void MultiplyTransform (System.Drawing.Drawing2D.Matrix matrix, System.Drawing.Drawing2D.MatrixOrder order);

member this.MultiplyTransform : System.Drawing.Drawing2D.Matrix * System.Drawing.Drawing2D.MatrixOrder -> unit

Public Sub MultiplyTransform (matrix As Matrix, order As MatrixOrder)

Paramètres

Exemples

L’exemple de code suivant est conçu pour être utilisé avec Windows Forms et nécessite PaintEventArgse, un objet d’événement OnPaint. Le code effectue les actions suivantes :

• Crée un chemin d’accès graphique et ajoute un rectangle à celui-ci.

• Crée un PathGradientBrush à partir des points de chemin d’accès (dans cet exemple, les points forment un rectangle, mais il peut s’agir de la plupart des formes).

• Définit la couleur centrale sur rouge et la couleur environnante sur bleu.

• Dessine le PathGradientBrush à l’écran avant d’appliquer la transformation de multiplication.

• Crée une matrice qui fait pivoter le pinceau de 90 degrés et la traduit par 100 dans les deux axes.

• Applique cette matrice au pinceau à l’aide de la méthode MultiplyTransform.

• Dessine le pinceau à l’écran.

public:
   void MultiplyTransformExample( PaintEventArgs^ e )
   {
      // Create a graphics path and add an rectangle.
      GraphicsPath^ myPath = gcnew GraphicsPath;
      Rectangle rect = Rectangle(20,20,100,50);
      myPath->AddRectangle( rect );

      // Get the path's array of points.
      array<PointF>^myPathPointArray = myPath->PathPoints;

      // Create a path gradient brush.
      PathGradientBrush^ myPGBrush = gcnew PathGradientBrush( myPathPointArray );

      // Set the color span.
      myPGBrush->CenterColor = Color::Red;
      array<Color>^ mySurroundColor = {Color::Blue};
      myPGBrush->SurroundColors = mySurroundColor;

      // Draw the brush to the screen prior to transformation.
      e->Graphics->FillRectangle( myPGBrush, 10, 10, 200, 200 );

      // Create a new matrix that rotates by 90 degrees, and
      // translates by 100 in each direction.
      Matrix^ myMatrix = gcnew Matrix( 0,1,-1,0,100,100 );

      // Apply the transform to the brush.
      myPGBrush->MultiplyTransform( myMatrix, MatrixOrder::Append );

      // Draw the brush to the screen again after applying the
      // transform.
      e->Graphics->FillRectangle( myPGBrush, 10, 10, 200, 300 );
   }

public void MultiplyTransformExample(PaintEventArgs e)
{
             
    // Create a graphics path and add an rectangle.
    GraphicsPath myPath = new GraphicsPath();
    Rectangle rect = new Rectangle(20, 20, 100, 50);
    myPath.AddRectangle(rect);
             
    // Get the path's array of points.
    PointF[] myPathPointArray = myPath.PathPoints;
             
    // Create a path gradient brush.
    PathGradientBrush myPGBrush = new
        PathGradientBrush(myPathPointArray);
             
    // Set the color span.
    myPGBrush.CenterColor = Color.Red;
    Color[] mySurroundColor = {Color.Blue};
    myPGBrush.SurroundColors = mySurroundColor;
             
    // Draw the brush to the screen prior to transformation.
    e.Graphics.FillRectangle(myPGBrush, 10, 10, 200, 200);
             
    // Create a new matrix that rotates by 90 degrees, and
    // translates by 100 in each direction.
    Matrix myMatrix = new Matrix(0, 1, -1, 0, 100, 100);
             
    // Apply the transform to the brush.
    myPGBrush.MultiplyTransform(myMatrix, MatrixOrder.Append);
             
    // Draw the brush to the screen again after applying the
    // transform.
    e.Graphics.FillRectangle(myPGBrush, 10, 10, 200, 300);
}

Public Sub MultiplyTransformExample(ByVal e As PaintEventArgs)

    ' Create a graphics path and add a rectangle.
    Dim myPath As New GraphicsPath
    Dim rect As New Rectangle(20, 20, 100, 50)
    myPath.AddRectangle(rect)

    ' Get the path's array of points.
    Dim myPathPointArray As PointF() = myPath.PathPoints

    ' Create a path gradient brush.
    Dim myPGBrush As New PathGradientBrush(myPathPointArray)

    ' Set the color span.
    myPGBrush.CenterColor = Color.Red
    Dim mySurroundColor As Color() = {Color.Blue}
    myPGBrush.SurroundColors = mySurroundColor

    ' Draw the brush to the screen prior to transformation.
    e.Graphics.FillRectangle(myPGBrush, 10, 10, 200, 200)

    ' Create a new matrix that rotates by 90 degrees, and
    ' translates by 100 in each direction.
    Dim myMatrix As New Matrix(0, 1, -1, 0, 100, 100)

    ' Apply the transform to the brush.
    myPGBrush.MultiplyTransform(myMatrix, MatrixOrder.Append)

    ' Draw the brush to the screen again after applying the
    ' transform.
    e.Graphics.FillRectangle(myPGBrush, 10, 10, 200, 300)
End Sub

Source:

PathGradientBrush.cs

Source:

PathGradientBrush.cs

Source:

PathGradientBrush.cs

Source:

PathGradientBrush.cs

Source:

PathGradientBrush.cs

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

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

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

Public Sub MultiplyTransform (matrix As Matrix)

Paramètres

Exemples

Pour obtenir un exemple, consultez MultiplyTransform.