LinearGradientBrush.MultiplyTransform 方法

定义

命名空间:

System.Drawing.Drawing2D

程序集:

System.Drawing.Common.dll

包:

System.Drawing.Common v8.0.0

通过预先计算指定的 Matrix，将表示此 LinearGradientBrush 的局部几何转换的 Matrix 与指定的 Matrix 相乘。

重载

MultiplyTransform(Matrix, MatrixOrder)	按指定的顺序，将表示此 LinearGradientBrush 的局部几何转换的 Matrix 与指定的 Matrix 相乘。
MultiplyTransform(Matrix)	通过预先计算指定的 Matrix，将表示此 LinearGradientBrush 的局部几何转换的 Matrix 与指定的 Matrix 相乘。

MultiplyTransform(Matrix, MatrixOrder)

Source:

LinearGradientBrush.cs

按指定的顺序，将表示此 LinearGradientBrush 的局部几何转换的 Matrix 与指定的 Matrix 相乘。

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)

参数

matrix

Matrix

与几何转换相乘的 Matrix。

order

MatrixOrder

一个 MatrixOrder，它指定两个矩阵相乘的顺序。

示例

下面的代码示例旨在与 Windows 窗体 一起使用，它需要 PaintEventArgse事件OnPaint对象。 此代码执行以下操作：

• 创建一个新的 LinearGradientBrush。

• 使用此画笔在屏幕上绘制一个椭圆。

• MultiplyTransform调用 方法以转换 LinearGradientBrush。

• 使用转换后的画笔将椭圆绘制到屏幕正下方的第一个椭圆。

请注意，下椭圆在水平方向上拉伸，渐变将拉伸以匹配新形状。

private:
   void MultiplyTransformExample( PaintEventArgs^ e )
   {
      // Create a LinearGradientBrush.
      Rectangle myRect = Rectangle(20,20,200,100);
      LinearGradientBrush^ myLGBrush = gcnew LinearGradientBrush( myRect,Color::Blue,Color::Red,0.0f,true );

      // Draw an ellipse to the screen using the LinearGradientBrush.
      e->Graphics->FillEllipse( myLGBrush, myRect );

      // Transform the LinearGradientBrush.
      array<Point>^ transformArray = {Point(20,150),Point(400,150),Point(20,200)};
      Matrix^ myMatrix = gcnew Matrix( myRect,transformArray );
      myLGBrush->MultiplyTransform( myMatrix, MatrixOrder::Prepend );

      // Draw a second ellipse to the screen using
      // the transformed brush.
      e->Graphics->FillEllipse( myLGBrush, 20, 150, 380, 50 );
   }

 private void MultiplyTransformExample(PaintEventArgs e)
 {
              
     // Create a LinearGradientBrush.
     Rectangle myRect = new Rectangle(20, 20, 200, 100);
     LinearGradientBrush myLGBrush = new LinearGradientBrush(
         myRect, Color.Blue, Color.Red,  0.0f, true);
         
     // Draw an ellipse to the screen using the LinearGradientBrush.
     e.Graphics.FillEllipse(myLGBrush, myRect);
              
     // Transform the LinearGradientBrush.
     Point[] transformArray = { new Point(20, 150),
          new Point(400,150), new Point(20, 200) };

     Matrix myMatrix = new Matrix(myRect, transformArray);
     myLGBrush.MultiplyTransform(
         myMatrix,
         MatrixOrder.Prepend);
              
     // Draw a second ellipse to the screen using
     // the transformed brush.
     e.Graphics.FillEllipse(myLGBrush, 20, 150, 380, 50);
 }

Public Sub MultiplyTransformExample(ByVal e As PaintEventArgs)

    ' Create a LinearGradientBrush.
    Dim myRect As New Rectangle(20, 20, 200, 100)
    Dim myLGBrush As New LinearGradientBrush(myRect, Color.Blue, _
    Color.Red, 0.0F, True)

    ' Draw an ellipse to the screen using the LinearGradientBrush.
    e.Graphics.FillEllipse(myLGBrush, myRect)

    ' Transform the LinearGradientBrush.
    Dim transformArray As Point() = {New Point(20, 150), _
    New Point(400, 150), New Point(20, 200)}
    Dim myMatrix As New Matrix(myRect, transformArray)
    myLGBrush.MultiplyTransform(myMatrix, MatrixOrder.Prepend)

    ' Draw a second ellipse to the screen using the transformed brush.
    e.Graphics.FillEllipse(myLGBrush, 20, 150, 380, 50)
End Sub

MultiplyTransform(Matrix)

Source:

LinearGradientBrush.cs

通过预先计算指定的 Matrix，将表示此 LinearGradientBrush 的局部几何转换的 Matrix 与指定的 Matrix 相乘。

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)

参数

matrix

Matrix

与几何转换相乘的 Matrix。

示例

有关示例，请参见 MultiplyTransform。