PathGradientBrush.ScaleTransform Método

public:
 void ScaleTransform(float sx, float sy);

public void ScaleTransform(float sx, float sy);

member this.ScaleTransform : single * single -> unit

Public Sub ScaleTransform (sx As Single, sy As Single)

Parâmetros

Exemplos

Para obter um exemplo, consulte ScaleTransform.

public:
 void ScaleTransform(float sx, float sy, System::Drawing::Drawing2D::MatrixOrder order);

public void ScaleTransform(float sx, float sy, System.Drawing.Drawing2D.MatrixOrder order);

member this.ScaleTransform : single * single * System.Drawing.Drawing2D.MatrixOrder -> unit

Public Sub ScaleTransform (sx As Single, sy As Single, order As MatrixOrder)

Parâmetros

Exemplos

O seguinte exemplo de código foi concebido para uso com Windows Forms e requer PaintEventArgse, um objeto de evento OnPaint. O código

• Cria um caminho gráfico e adiciona um retângulo a ele.

• Cria um PathGradientBrush a partir dos pontos do caminho (neste exemplo, os pontos formam um retângulo, mas pode ser quase qualquer forma).

• Define a cor central para vermelho e a cor circundante para azul.

• Desenha o PathGradientBrush para o ecrã antes de aplicar a transformação de escala.

• Aplica a transformação de escamas ao pincel usando o seu ScaleTransform método.

• Chama o TranslateTransform método para mover o retângulo do pincel de modo a não sobrepor o que foi desenhado anteriormente no ecrã.

• Desenha o retângulo do pincel traduzido para o ecrã.

Note que o retângulo inferior tem o dobro do comprimento no eixo x do que o desenhado antes da translação.

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

      // Scale by a factor of 2 in the x-axis by applying the scale
      // transform to the brush.
      myPGBrush->ScaleTransform( 2, 1, MatrixOrder::Append );

      // Move the brush down by 100 by Applying the translate
      // transform to the brush.
      myPGBrush->TranslateTransform(  -100, 100, MatrixOrder::Append );

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

public void ScaleTransformExample(PaintEventArgs e)
{
             
    // Create a graphics path and add a rectangle.
    GraphicsPath myPath = new GraphicsPath();
    Rectangle rect = new Rectangle(100, 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);
             
    // Scale by a factor of 2 in the x-axis by applying the scale
    // transform to the brush.
    myPGBrush.ScaleTransform(2, 1, MatrixOrder.Append);
             
    // Move the brush down by 100 by Applying the translate
    // transform to the brush.
    myPGBrush.TranslateTransform(-100, 100, MatrixOrder.Append);
             
    // Draw the brush to the screen again after applying the
    // transforms.
    e.Graphics.FillRectangle(myPGBrush, 10, 10, 300, 300);
}

Public Sub ScaleTransformExample(ByVal e As PaintEventArgs)

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

    ' Scale by a factor of 2 in the x-axis by applying the scale
    ' transform to the brush.
    myPGBrush.ScaleTransform(2, 1, MatrixOrder.Append)

    ' Move the brush down by 100 by Applying the translate
    ' transform to the brush.
    myPGBrush.TranslateTransform(-100, 100, MatrixOrder.Append)

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