GraphicsPathIterator.Enumerate メソッド

.NET Framework クラス ライブラリ リファレンス

GraphicsPathIterator.Enumerate メソッド

GraphicsPath に関連付けられている PathPoints プロパティ配列および PathTypes プロパティ配列を、指定された 2 つの配列にコピーします。

名前空間: System.Drawing.Drawing2D
アセンブリ: System.Drawing (system.drawing.dll 内)
構文

Visual Basic (宣言)

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

Visual Basic (使用法)

Dim instance As GraphicsPathIterator
Dim points As PointF()
Dim types As Byte()
Dim returnValue As Integer

returnValue = instance.Enumerate(points, types)

C#

public int Enumerate (
    ref PointF[] points,
    ref byte[] types
)

C++

public:
int Enumerate (
    array<PointF>^% points, 
    array<unsigned char>^% types
)

J#

public int Enumerate (
    /** @ref */ PointF[] points, 
    /** @ref */ byte[] types
)

JScript

JScript では、値型の引数は参照渡しされません。

パラメータ

points

戻り時には、パス内の点を表す PointF 構造体の配列が格納されます。

types

戻り時には、パス内の点の種類を表すバイトの配列が格納されます。

戻り値
コピーする点の数。

使用例

次の例は、Windows フォームでの使用を意図してデザインされており、OnPaint イベントのオブジェクトである PaintEventArgse が必要です。このコードは次のアクションを実行します。

• グラフィックス パスを作成します。

• そのパスに複数のプリミティブとマーカーを追加します。

• パスのデータを画面の左側に一覧表示します。

• GraphicsPathIterator を作成し、そのオブジェクトが指す位置を先頭に戻します。

• パス データのインデックスをインクリメントして 2 番目のマーカーを指すようにします。

• Enumerate メソッドを呼び出し、パス データを points 配列と types 配列にコピーします。

• コピーされたデータを画面の右側に一覧表示します。

Visual Basic

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

C#

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;
    }
}

C++

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;
      }
   }

J#

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.get_PointCount();
    PointF myPathPoints[] = myPath.get_PathPoints();
    ubyte myPathTypes[] = myPath.get_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.get_Black());

    // List the set of points and types and types to the left side
    // of the screen.
    e.get_Graphics().DrawString("Original Data", myFont, myBrush, 20, j);
    j += 20;
    for (i = 0; i < myPathPointCount; i++) {
        e.get_Graphics().DrawString(System.Convert.ToString(
            myPathPoints[i].get_X())  
            + ", " + System.Convert.ToString(myPathPoints[i].get_Y()) 
 
            + ", " + myPathTypes.get_Item(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.get_Count()];
    ubyte types[] = new ubyte[myPathIterator.get_Count()];
    int numPoints = myPathIterator.Enumerate(points, types);

    // Draw the set of copied points and types to the screen.
    j = 20;
    e.get_Graphics().DrawString("Copied Data", myFont, myBrush, 200, j);
    j += 20;
    for (i = 0; i < points.length; i++) {
        e.get_Graphics().DrawString("Point: " + i + ", " + "Value:
 "  
            + points.get_Item(i).ToString() + ", " + "Type: "
  
            + types.get_Item(i).ToString(), myFont, myBrush, 200, j);
        j += 20;
    }
} //EnumerateExample

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
GraphicsPathIterator クラス
GraphicsPathIterator メンバ
System.Drawing.Drawing2D 名前空間