GraphicsPathIterator.Enumerate(PointF[], Byte[]) Yöntem

Tanım

Ad Alanı:

System.Drawing.Drawing2D

Bütünleştirilmiş Kod:

System.Drawing.Common.dll

Paket:

System.Drawing.Common v9.0.0-preview.5.24306.5

Kaynak:

GraphicsPathIterator.cs

İlişkili GraphicsPathPathPoints özelliğini ve PathTypes özellik dizilerini belirtilen iki diziye kopyalar.

public:
 int Enumerate(cli::array <System::Drawing::PointF> ^ % points, cli::array <System::Byte> ^ % types);

public int Enumerate (ref System.Drawing.PointF[] points, ref byte[] types);

member this.Enumerate : PointF[] * Byte[] -> int

Public Function Enumerate (ByRef points As PointF(), ByRef types As Byte()) As Integer

Parametreler

points

PointF[]

Dönüşte, yoldaki noktaları temsil eden bir PointF yapıları dizisi içerir.

types

Byte[]

Döndürdüğünüzde, yoldaki nokta türlerini temsil eden bir bayt dizisi içerir.

Döndürülenler

Int32

Kopyalanan nokta sayısı.

Örnekler

Aşağıdaki örnek, Windows Forms ile kullanılmak üzere tasarlanmıştır ve OnPaint bir olay nesnesi PaintEventArgsegerektirir. Kod aşağıdaki eylemleri gerçekleştirir:

• Grafik yolu oluşturur.

• Bunu birkaç temel öğe ve bazı işaretçilerle doldurur.

• Ekranın sol tarafındaki yol verilerini listeler.

• Bir GraphicsPathIterator oluşturur ve geri sarmalar.

• Yol veri dizinini ikinci işaretçiye artırır.

• Yol verilerini points ve types dizilerine kopyalamak için Enumerate yöntemini çağırır.

• Kopyalanan bu verileri ekranın sağ tarafında listeler.

public:
   void EnumerateExample( PaintEventArgs^ e )
   {
      GraphicsPath^ myPath = gcnew GraphicsPath;
      array<Point>^ myPoints = {Point(20,20),Point(120,120),Point(20,120),Point(20,20)};
      Rectangle myRect = Rectangle(120,120,100,100);
      myPath->AddLines( myPoints );
      myPath->AddRectangle( myRect );
      myPath->AddEllipse( 220, 220, 100, 100 );

      // Get the total number of points for the path, and arrays of
      // the  points and types.
      int myPathPointCount = myPath->PointCount;
      array<PointF>^myPathPoints = myPath->PathPoints;
      array<Byte>^myPathTypes = myPath->PathTypes;

      // Set up variables for listing the array of points on the left
      // side of the screen.
      int i;
      float j = 20;
      System::Drawing::Font^ myFont = gcnew System::Drawing::Font( "Arial",8 );
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Black );

      // List the set of points and types and types to the left side
      // of the screen.
      e->Graphics->DrawString( "Original Data", myFont, myBrush, 20, j );
      j += 20;
      for ( i = 0; i < myPathPointCount; i++ )
      {
         e->Graphics->DrawString( myPathPoints[ i ].X + ", " + myPathPoints[ i ].Y + ", " + myPathTypes[ i ], myFont, myBrush, 20, j );
         j += 20;
      }

      // Create a GraphicsPathIterator for myPath.
      GraphicsPathIterator^ myPathIterator = gcnew GraphicsPathIterator( myPath );
      myPathIterator->Rewind();
      array<PointF>^points = gcnew array<PointF>(myPathIterator->Count);
      array<Byte>^types = gcnew array<Byte>(myPathIterator->Count);

      // int numPoints = myPathIterator->Enumerate(&points, &types);
      // Draw the set of copied points and types to the screen.
      j = 20;
      e->Graphics->DrawString( "Copied Data", myFont, myBrush, 200, j );
      j += 20;
      for ( i = 0; i < points->Length; i++ )
      {
         e->Graphics->DrawString( String::Format( "Point: {0}, Value: {1}, Type: {2}", i, points[ i ], types[ i ] ), myFont, myBrush, 200, j );
         j += 20;
      }
   }

public void EnumerateExample(PaintEventArgs e)
{
    GraphicsPath myPath = new GraphicsPath();
    Point[] myPoints =
             {
                 new Point(20, 20),
                 new Point(120, 120),
                 new Point(20, 120),
                 new Point(20, 20)
             };
    Rectangle myRect = new Rectangle(120, 120, 100, 100);
    myPath.AddLines(myPoints);
    myPath.AddRectangle(myRect);
    myPath.AddEllipse(220, 220, 100, 100);
             
    // Get the total number of points for the path, and arrays of
    // the  points and types.
    int myPathPointCount = myPath.PointCount;
    PointF[] myPathPoints = myPath.PathPoints;
    byte[] myPathTypes = myPath.PathTypes;
             
    // Set up variables for listing the array of points on the left
    // side of the screen.
    int i;
    float j = 20;
    Font myFont = new Font("Arial", 8);
    SolidBrush myBrush = new SolidBrush(Color.Black);
             
    // List the set of points and types and types to the left side
    // of the screen.
    e.Graphics.DrawString("Original Data",
        myFont,
        myBrush,
        20,
        j);
    j += 20;
    for(i=0; i<myPathPointCount; i++)
    {
        e.Graphics.DrawString(myPathPoints[i].X.ToString()+
            ", " + myPathPoints[i].Y.ToString() + ", " +
            myPathTypes[i].ToString(),
            myFont,
            myBrush,
            20,
            j);
        j+=20;
    }
             
    // Create a GraphicsPathIterator for myPath.
    GraphicsPathIterator myPathIterator =
        new GraphicsPathIterator(myPath);
    myPathIterator.Rewind();
    PointF[] points = new PointF[myPathIterator.Count];
    byte[] types = new byte[myPathIterator.Count];
    int numPoints = myPathIterator.Enumerate(ref points, ref types);
             
    // Draw the set of copied points and types to the screen.
    j = 20;
    e.Graphics.DrawString("Copied Data",
        myFont,
        myBrush,
        200,
        j);
    j += 20;
    for(i=0; i<points.Length; i++)
    {
        e.Graphics.DrawString("Point: " + i +
            ", " + "Value: " + points[i].ToString() + ", " +
            "Type: " + types[i].ToString(),
            myFont,
            myBrush,
            200,
            j);
        j+=20;
    }
}

Public Sub EnumerateExample(ByVal e As PaintEventArgs)
    Dim myPath As New GraphicsPath
    Dim myPoints As Point() = {New Point(20, 20), _
        New Point(120, 120), New Point(20, 120), New Point(20, 20)}
    Dim myRect As New Rectangle(120, 120, 100, 100)
    myPath.AddLines(myPoints)
    myPath.AddRectangle(myRect)
    myPath.AddEllipse(220, 220, 100, 100)

    ' Get the total number of points for the path, and arrays of the
    ' points and types.
    Dim myPathPointCount As Integer = myPath.PointCount
    Dim myPathPoints As PointF() = myPath.PathPoints
    Dim myPathTypes As Byte() = myPath.PathTypes

    ' Set up variables for listing the array of points on the left side
    ' of the screen.
    Dim i As Integer
    Dim j As Single = 20
    Dim myFont As New Font("Arial", 8)
    Dim myBrush As New SolidBrush(Color.Black)

    ' List the set of points and types and types to the left side of
    ' the screen.
    e.Graphics.DrawString("Original Data", myFont, myBrush, 20, j)
    j += 20
    For i = 0 To myPathPointCount - 1
        e.Graphics.DrawString(myPathPoints(i).X.ToString() & ", " & _
        myPathPoints(i).Y.ToString() & ", " & _
        myPathTypes(i).ToString(), myFont, myBrush, 20, j)
        j += 20
    Next i

    ' Create a GraphicsPathIterator for myPath.
    Dim myPathIterator As New GraphicsPathIterator(myPath)
    myPathIterator.Rewind()
    Dim points(myPathIterator.Count) As PointF
    Dim types(myPathIterator.Count) As Byte
    Dim numPoints As Integer = myPathIterator.Enumerate(points, types)

    ' Draw the set of copied points and types to the screen.
    j = 20
    e.Graphics.DrawString("Copied Data", myFont, myBrush, 200, j)
    j += 20
    For i = 0 To points.Length - 1
        e.Graphics.DrawString("Point: " & i & ", " & "Value: " & _
            points(i).ToString() & ", " & "Type: " & _
            types(i).ToString(), myFont, myBrush, 200, j)
        j += 20
    Next i
End Sub