Matrix.TransformPoints 方法

定義

命名空間:

System.Drawing.Drawing2D

組件:

System.Drawing.Common.dll

套件:

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

將此 Matrix 表示的幾何轉換套用至點陣列。

多載

TransformPoints(PointF[])	將這個 Matrix 所代表的幾何轉換套用至指定的點陣列。
TransformPoints(Point[])	將這個 Matrix 所代表的幾何轉換套用至指定的點陣列。

TransformPoints(PointF[])

來源:

Matrix.cs

將這個 Matrix 所代表的幾何轉換套用至指定的點陣列。

public:
 void TransformPoints(... cli::array <System::Drawing::PointF> ^ pts);

public void TransformPoints (params System.Drawing.PointF[] pts);

member this.TransformPoints : System.Drawing.PointF[] -> unit

Public Sub TransformPoints (ParamArray pts As PointF())

參數

pts

PointF[]

PointF 結構的陣列，表示要轉換的點。

範例

如需範例，請參閱 TransformPoints(Point[])。

TransformPoints(Point[])

來源:

Matrix.cs

將這個 Matrix 所代表的幾何轉換套用至指定的點陣列。

public:
 void TransformPoints(... cli::array <System::Drawing::Point> ^ pts);

public void TransformPoints (params System.Drawing.Point[] pts);

member this.TransformPoints : System.Drawing.Point[] -> unit

Public Sub TransformPoints (ParamArray pts As Point())

參數

pts

Point[]

Point 結構的陣列，表示要轉換的點。

範例

下列程式代碼範例的設計目的是要與 Windows Forms 搭配使用，而且需要 PaintEventArgsePaint 事件物件。 程式代碼會執行下列動作：

• 建立形成矩形的點陣列。

• 繪製這個點陣列（套用縮放轉換前的畫面（藍色矩形）。

• 建立矩陣，並在 x 軸中將矩陣縮放為 3，並在 Y 軸中縮放 2。

• 將此矩陣轉換套用至點陣列。

• 將轉換的陣列繪製到畫面（紅色矩形）。

請注意，紅色矩形的縮放比例為 X 軸中的 3，而 Y 軸為 2，包括矩形左上角（矩形的起點）。

public:
   void TransformPointsExample( PaintEventArgs^ e )
   {
      Pen^ myPen = gcnew Pen( Color::Blue,1.0f );
      Pen^ myPen2 = gcnew Pen( Color::Red,1.0f );

      // Create an array of points.
      array<Point>^ myArray = {Point(20,20),Point(120,20),Point(120,120),Point(20,120),Point(20,20)};

      // Draw the Points to the screen before applying the
      // transform.
      e->Graphics->DrawLines( myPen, myArray );

      // Create a matrix and scale it.
      Matrix^ myMatrix = gcnew Matrix;
      myMatrix->Scale( 3, 2, MatrixOrder::Append );
      myMatrix->TransformPoints( myArray );

      // Draw the Points to the screen again after applying the
      // transform.
      e->Graphics->DrawLines( myPen2, myArray );
   }

public void TransformPointsExample(PaintEventArgs e)
{
    Pen myPen = new Pen(Color.Blue, 1);
    Pen myPen2 = new Pen(Color.Red, 1);
             
    // Create an array of points.
    Point[] myArray =
             {
                 new Point(20, 20),
                 new Point(120, 20),
                 new Point(120, 120),
                 new Point(20, 120),
                 new Point(20,20)
             };
             
    // Draw the Points to the screen before applying the
    // transform.
    e.Graphics.DrawLines(myPen, myArray);
             
    // Create a matrix and scale it.
    Matrix myMatrix = new Matrix();
    myMatrix.Scale(3, 2, MatrixOrder.Append);
    myMatrix.TransformPoints(myArray);
             
    // Draw the Points to the screen again after applying the
    // transform.
    e.Graphics.DrawLines(myPen2, myArray);
}

Public Sub TransformPointsExample(ByVal e As PaintEventArgs)
    Dim myPen As New Pen(Color.Blue, 1)
    Dim myPen2 As New Pen(Color.Red, 1)

    ' Create an array of points.
    Dim myArray As Point() = {New Point(20, 20), New Point(120, 20), _
    New Point(120, 120), New Point(20, 120), New Point(20, 20)}

    ' Draw the Points to the screen before applying the
    ' transform.
    e.Graphics.DrawLines(myPen, myArray)

    ' Create a matrix and scale it.
    Dim myMatrix As New Matrix
    myMatrix.Scale(3, 2, MatrixOrder.Append)
    myMatrix.TransformPoints(myArray)

    ' Draw the Points to the screen again after applying the
    ' transform.
    e.Graphics.DrawLines(myPen2, myArray)
End Sub