Matrix.Multiply Metode

Definisi

Ruang nama:

System.Drawing.Drawing2D

Rakitan:

System.Drawing.Common.dll

Paket:

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

Mengalikan Matrix ini dengan Matrix yang ditentukan dengan menambahkan Matrixyang ditentukan sebelumnya.

Overload

Multiply(Matrix)	Mengalikan Matrix ini dengan matriks yang ditentukan dalam parameter matrix, dengan menambahkan Matrixyang ditentukan sebelumnya.
Multiply(Matrix, MatrixOrder)	Mengalikan Matrix ini dengan matriks yang ditentukan dalam parameter matrix, dan dalam urutan yang ditentukan dalam parameter order.

Multiply(Matrix)

Sumber:

Matrix.cs

Mengalikan Matrix ini dengan matriks yang ditentukan dalam parameter matrix, dengan menambahkan Matrixyang ditentukan sebelumnya.

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

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

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

Public Sub Multiply (matrix As Matrix)

Parameter

matrix

Matrix

Matrix di mana Matrix ini akan dikalikan.

Contoh

Misalnya, lihat Multiply.

Multiply(Matrix, MatrixOrder)

Sumber:

Matrix.cs

Mengalikan Matrix ini dengan matriks yang ditentukan dalam parameter matrix, dan dalam urutan yang ditentukan dalam parameter order.

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

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

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

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

Parameter

matrix

Matrix

Matrix di mana Matrix ini akan dikalikan.

order

MatrixOrder

MatrixOrder yang mewakili urutan perkalian.

Contoh

Contoh kode berikut dirancang untuk digunakan dengan Windows Forms, dan memerlukan PaintEventArgse, objek peristiwa Paint. Kode melakukan tindakan berikut:

• Membuat tiga matriks.

• Mencantumkan isi matriks 1 ke layar.

• Mengalikan matriks 1 dengan matriks 2 dan menyimpan hasilnya dalam matriks 1.

• Mencantumkan isi matriks 1 ke layar.

• Mengalikan hasil yang disimpan dalam matriks 1 dengan matriks 3, dan sekali lagi menyimpan hasilnya dalam matriks 1.

• Mencantumkan isi matriks 1 ke layar.

• Menggambar persegi panjang ke layar sebelum menerapkan transformasi matriks 1 (persegi panjang biru).

• Menerapkan transformasi ke persegi panjang.

• Menggambar persegi panjang yang diubah ke layar (persegi panjang merah), menggunakan koordinat yang sama dengan persegi panjang sebelumnya.

Perhatikan bahwa persegi panjang merah telah diskalakan oleh faktor dua arah horizontal, kemudian diputar 90 derajat, dan kemudian dipindahkan (diterjemahkan) 250 titik ke arah x dan 50 titik ke arah y.

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

      // Set up the matrices.
      Matrix^ myMatrix1 = gcnew Matrix( 2.0f,0.0f,0.0f,1.0f,0.0f,0.0f );
      Matrix^ myMatrix2 = gcnew Matrix( 0.0f,1.0f,-1.0f,0.0f,0.0f,0.0f );
      Matrix^ myMatrix3 = gcnew Matrix( 1.0f,0.0f,0.0f,1.0f,250.0f,50.0f );

      // Display the elements of the starting matrix.
      ListMatrixElements( e, myMatrix1, "Beginning Matrix", 6, 40 );

      // Multiply Matrix1 by Matrix 2.
      myMatrix1->Multiply( myMatrix2, MatrixOrder::Append );

      // Display the result of the multiplication of Matrix1 and
      // Matrix2.
      ListMatrixElements( e, myMatrix1, "Matrix After 1st Multiplication", 6, 60 );

      // Multiply the result from the previous multiplication by
      // Matrix3.
      myMatrix1->Multiply( myMatrix3, MatrixOrder::Append );

      // Display the result of the previous multiplication
      // multiplied by Matrix3.
      ListMatrixElements1( e, myMatrix1, "Matrix After 2nd Multiplication", 6, 80 );

      // Draw the rectangle prior to transformation.
      e->Graphics->DrawRectangle( myPen, 0, 0, 100, 100 );

      // Make the transformation.
      e->Graphics->Transform = myMatrix1;

      // Draw the rectangle after transformation.
      e->Graphics->DrawRectangle( myPen2, 0, 0, 100, 100 );
   }

   //-------------------------------------------------------
   // The following function is a helper function to
   // list the contents of a matrix.
   //-------------------------------------------------------
   void ListMatrixElements1( PaintEventArgs^ e, Matrix^ matrix, String^ matrixName, int numElements, int y )
   {
      // Set up variables for drawing the array
      // of points to the screen.
      int i;
      float x = 20,X = 200;
      System::Drawing::Font^ myFont = gcnew System::Drawing::Font( "Arial",8 );
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Black );

      // Draw the matrix name to the screen.
      e->Graphics->DrawString( String::Concat( matrixName, ":  " ), myFont, myBrush, (float)x, (float)y );

      // Draw the set of path points and types to the screen.
      for ( i = 0; i < numElements; i++ )
      {
         e->Graphics->DrawString( String::Concat( matrix->Elements[ i ], ", " ), myFont, myBrush, (float)X, (float)y );
         X += 30;
      }
   }

public void MultiplyExample(PaintEventArgs e)
{
    Pen myPen = new Pen(Color.Blue, 1);
    Pen myPen2 = new Pen(Color.Red, 1);
             
    // Set up the matrices.
    Matrix myMatrix1 = new Matrix(
        2.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f);  
    
    Matrix myMatrix2 = new Matrix(
        0.0f, 1.0f, -1.0f, 0.0f, 0.0f, 0.0f); 
  
    Matrix myMatrix3 = new Matrix(
        1.0f, 0.0f, 0.0f, 1.0f, 250.0f, 50.0f);  

    // Display the elements of the starting matrix.
    ListMatrixElements(e, myMatrix1, "Beginning Matrix", 6, 40);
             
    // Multiply Matrix1 by Matrix 2.
    myMatrix1.Multiply(myMatrix2, MatrixOrder.Append);
             
    // Display the result of the multiplication of Matrix1 and
             
    // Matrix2.
    ListMatrixElements(e,
        myMatrix1,
        "Matrix After 1st Multiplication",
        6,
        60);
             
    // Multiply the result from the pervious multiplication by
    // Matrix3.
    myMatrix1.Multiply(myMatrix3, MatrixOrder.Append);
             
    // Display the result of the previous multiplication
    // multiplied by Matrix3.
    ListMatrixElements1(e,
        myMatrix1,
        "Matrix After 2nd Multiplication",
        6,
        80);
             
    // Draw the rectangle prior to transformation.
    e.Graphics.DrawRectangle(myPen, 0, 0, 100, 100);
             
    // Make the transformation.
    e.Graphics.Transform = myMatrix1;
             
    // Draw the rectangle after transformation.
    e.Graphics.DrawRectangle(myPen2, 0, 0, 100, 100);
}
             
//-------------------------------------------------------
// The following function is a helper function to
// list the contents of a matrix.
//-------------------------------------------------------
public void ListMatrixElements1(
    PaintEventArgs e,
    Matrix matrix,
    string matrixName,
    int numElements,
    int y)
{
             
    // Set up variables for drawing the array
    // of points to the screen.
    int i;
    float x = 20, X = 200;
    Font myFont = new Font("Arial", 8);
    SolidBrush myBrush = new SolidBrush(Color.Black);
             
    // Draw the matrix name to the screen.
    e.Graphics.DrawString(
        matrixName + ":  ",
        myFont,
        myBrush,
        x,
        y);
             
    // Draw the set of path points and types to the screen.
    for(i=0; i<numElements; i++)
    {
        e.Graphics.DrawString(
            matrix.Elements[i].ToString() + ", ",
            myFont,
            myBrush,
            X,
            y);
        X += 30;
    }
}

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

    ' Set up the matrices.
    Dim myMatrix1 As New Matrix(2.0F, 0.0F, 0.0F, 1.0F, 0.0F, 0.0F)

    ' Scale.
    Dim myMatrix2 As New Matrix(0.0F, 1.0F, -1.0F, 0.0F, 0.0F, 0.0F)

    ' Rotate 90.
    Dim myMatrix3 As New Matrix(1.0F, 0.0F, 0.0F, 1.0F, 250.0F, 50.0F)

    ' Display the elements of the starting matrix.
    ListMatrixElementsHelper(e, myMatrix1, "Beginning Matrix", 6, 40)

    ' Multiply Matrix1 by Matrix 2.
    myMatrix1.Multiply(myMatrix2, MatrixOrder.Append)

    ' Display the result of the multiplication of Matrix1 and
    ' Matrix2.
    ListMatrixElementsHelper(e, myMatrix1, _
    "Matrix After 1st Multiplication", 6, 60)

    ' Multiply the result from the pervious multiplication by
    ' Matrix3.
    myMatrix1.Multiply(myMatrix3, MatrixOrder.Append)

    ' Display the result of the previous multiplication
    ' multiplied by Matrix3.
    ListMatrixElementsHelper1(e, myMatrix1, _
    "Matrix After 2nd Multiplication", 6, 80)

    ' Draw the rectangle prior to transformation.
    e.Graphics.DrawRectangle(myPen, 0, 0, 100, 100)
    e.Graphics.Transform = myMatrix1

    ' Draw the rectangle after transformation.
    e.Graphics.DrawRectangle(myPen2, 0, 0, 100, 100)
End Sub

' A helper function to list the contents of a matrix.
Public Sub ListMatrixElementsHelper1(ByVal e As PaintEventArgs, _
ByVal matrix As Matrix, ByVal matrixName As String, ByVal numElements As Integer, _
ByVal y As Integer)

    ' Set up variables for drawing the array

    ' of points to the screen.
    Dim i As Integer
    Dim x As Single = 20
    Dim j As Single = 200
    Dim myFont As New Font("Arial", 8)
    Dim myBrush As New SolidBrush(Color.Black)

    ' Draw the matrix name to the screen.
    e.Graphics.DrawString(matrixName + ":  ", myFont, myBrush, x, y)

    ' Draw the set of path points and types to the screen.
    For i = 0 To numElements - 1
        e.Graphics.DrawString(matrix.Elements(i).ToString() + ", ", _
        myFont, myBrush, j, y)
        j += 30
    Next i
End Sub

Keterangan

Jika urutan yang ditentukan Prepend, Matrix ini dikalikan dengan matriks yang ditentukan dalam urutan yang telah ditentukan sebelumnya. Jika urutan yang ditentukan Append, Matrix ini dikalikan dengan matriks yang ditentukan dalam urutan ditambahkan.