GraphicsPathIterator.NextSubpath 메서드

정의

하위 경로를 지정된 GraphicsPath에 있는 다음 하위 경로로 이동합니다.Moves the subpath to the next subpath in the specified GraphicsPath.

오버로드

NextSubpath(GraphicsPath, Boolean)

GraphicsPathIterator의 연결된 경로에서 다음 그림(하위 경로)을 가져옵니다.Gets the next figure (subpath) from the associated path of this GraphicsPathIterator.

NextSubpath(Int32, Int32, Boolean)

GraphicsPathIterator를 경로에 있는 다음 하위 경로로 이동합니다.Moves the GraphicsPathIterator to the next subpath in the path. 다음 하위 경로의 시작 인덱스와 끝 인덱스는 [out] 매개 변수에 들어 있습니다.The start index and end index of the next subpath are contained in the [out] parameters.

NextSubpath(GraphicsPath, Boolean)

GraphicsPathIterator의 연결된 경로에서 다음 그림(하위 경로)을 가져옵니다.Gets the next figure (subpath) from the associated path of this GraphicsPathIterator.

public:
 int NextSubpath(System::Drawing::Drawing2D::GraphicsPath ^ path, [Runtime::InteropServices::Out] bool % isClosed);
public int NextSubpath (System.Drawing.Drawing2D.GraphicsPath path, out bool isClosed);
member this.NextSubpath : System.Drawing.Drawing2D.GraphicsPath * bool -> int
Public Function NextSubpath (path As GraphicsPath, ByRef isClosed As Boolean) As Integer

매개 변수

path
GraphicsPath

이 반복기에 대해 가져온 그림(하위 경로)의 데이터 지점과 일치하도록 해당 데이터 지점을 설정하는 GraphicsPath입니다.A GraphicsPath that is to have its data points set to match the data points of the retrieved figure (subpath) for this iterator.

isClosed
Boolean

[out] 현재 하위 경로가 닫혀 있는지 여부를 나타냅니다.[out] Indicates whether the current subpath is closed. 그림이 닫혀 있으면 true이고, 그렇지 않으면 false입니다.It is true if the if the figure is closed, otherwise it is false.

반환

가져온 그림(하위 경로)에 있는 데이터 지점 수입니다.The number of data points in the retrieved figure (subpath). 가져올 그림이 더 이상 없으면 0이 반환됩니다.If there are no more figures to retrieve, zero is returned.

예제

다음 예제는 Windows Forms에서 사용 하도록 설계 되었으며 필요 PaintEventArgs e, OnPaint 이벤트 개체입니다.The following example is designed for use with Windows Forms, and it requires PaintEventArgse, an OnPaint event object. 이 코드에서는 다음 작업을 수행합니다.The code performs the following actions:

  • GraphicsPath 개체를 만듭니다.Creates a GraphicsPath object.

  • 세 줄, 사각형, 타원, 및 두 마커를 추가합니다.Adds three lines, a rectangle, an ellipse, and two markers.

  • 화면 왼쪽에 모든 경로 지점의 값을 나열합니다.Lists the values of all the path's points to the left side of the screen.

  • GraphicsPathIterator 개체를 만듭니다.Creates a GraphicsPathIterator object.

  • 만듭니다는 GraphicsPath 개체를 myPathSection, 복사한 요소를 수신 하도록 합니다.Creates a GraphicsPath object, myPathSection, to receive copied points.

  • 호출을 NextSubpath 메서드를 세 번째 하위 경로 (그림)을 반복 하 고 해당 하위 경로에 포함 된 모든 요소를 복사 합니다 myPathSection 경로 및 요소의 수를 복사 하는 반환 subpathPoints.Calls the NextSubpath method, which iterates to the third subpath (figure) and copies all the points contained in that subpath to the myPathSection path, and also returns the number of points copied to subpathPoints.

  • 화면 오른쪽에 포함 된 요소의 수와 하위 경로 수를 나열 합니다.Lists the subpath number and number of points it contains to the right side of the screen.

void NextSubpathExample2( PaintEventArgs^ e )
{
   // Create a graphics path.
   GraphicsPath^ myPath = gcnew GraphicsPath;

   // Set up primitives to add to myPath.
   array<Point>^ myPoints = {Point(20,20),Point(120,120),Point(20,120),Point(20,20)};
   Rectangle myRect = Rectangle(120,120,100,100);

   // Add 3 lines, a rectangle, an ellipse, and 2 markers.
   myPath->AddLines( myPoints );
   myPath->SetMarkers();
   myPath->AddRectangle( myRect );
   myPath->SetMarkers();
   myPath->AddEllipse( 220, 220, 100, 100 );

   // Get the total number of points for the path,
   // and the 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 all of the path's
   // points to 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 values of all the path points and types to the screen.
   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 );

   // Rewind the iterator.
   myPathIterator->Rewind();

   // Create the GraphicsPath section.
   GraphicsPath^ myPathSection = gcnew GraphicsPath;

   // Iterate to the 3rd subpath and list the number of points therein
   // to the screen.
   int subpathPoints;
   bool IsClosed2;

   // Iterate to the third subpath.
   subpathPoints = myPathIterator->NextSubpath( myPathSection, IsClosed2 );
   subpathPoints = myPathIterator->NextSubpath( myPathSection, IsClosed2 );
   subpathPoints = myPathIterator->NextSubpath( myPathSection, IsClosed2 );

   // Write the number of subpath points to the screen.
   e->Graphics->DrawString( String::Format( "Subpath: 3   Num Points: {0}", subpathPoints ), myFont, myBrush, 200, 20 );
}
public void NextSubpathExample2(PaintEventArgs e)
{
         
    // Create a graphics path.
    GraphicsPath myPath = new GraphicsPath();
         
    // Set up primitives to add to myPath.
    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);
         
    // Add 3 lines, a rectangle, an ellipse, and 2 markers.
    myPath.AddLines(myPoints);
    myPath.SetMarkers();
    myPath.AddRectangle(myRect);
    myPath.SetMarkers();
    myPath.AddEllipse(220, 220, 100, 100);
         
    // Get the total number of points for the path,
         
    // and the arrays of the points and types.
    int myPathPointCount = myPath.PointCount;
    PointF[] myPathPoints = myPath.PathPoints;
    byte[] myPathTypes = myPath.PathTypes;
         
    // Set up variables for listing all of the path's
         
    // points to the screen.
    int i;
    float j = 20;
    Font myFont = new Font("Arial", 8);
    SolidBrush myBrush = new SolidBrush(Color.Black);
         
    // List the values of all the path points and types to the screen.
    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);
         
    // Rewind the iterator.
    myPathIterator.Rewind();
         
    // Create the GraphicsPath section.
    GraphicsPath myPathSection = new GraphicsPath();
         
    // Iterate to the 3rd subpath and list the number of points therein
         
    // to the screen.
    int subpathPoints;
    bool IsClosed2;
         
    // Iterate to the third subpath.
    subpathPoints = myPathIterator.NextSubpath(
        myPathSection, out IsClosed2);
    subpathPoints = myPathIterator.NextSubpath(
        myPathSection, out IsClosed2);
    subpathPoints = myPathIterator.NextSubpath(
        myPathSection, out IsClosed2);
         
    // Write the number of subpath points to the screen.
    e.Graphics.DrawString("Subpath: 3"  +
        "   Num Points: " +
        subpathPoints.ToString(),
        myFont,
        myBrush,
        200,
        20);
}
Public Sub NextSubpathExample2(ByVal e As PaintEventArgs)

    ' Create a graphics path.
    Dim myPath As New GraphicsPath

    ' Set up primitives to add to myPath.
    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)

    ' Add 3 lines, a rectangle, an ellipse, and 2 markers.
    myPath.AddLines(myPoints)
    myPath.SetMarkers()
    myPath.AddRectangle(myRect)
    myPath.SetMarkers()
    myPath.AddEllipse(220, 220, 100, 100)

    ' Get the total number of points for the path,

    ' and the 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 drawing the array
    ' of points to 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)

    ' Draw the set of path points and types to the screen.
    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)

    ' Rewind the iterator.
    myPathIterator.Rewind()

    ' Create the GraphicsPath section.
    Dim myPathSection As New GraphicsPath

    ' Draw the 3rd subpath and the number of points therein
    ' to the screen.
    Dim subpathPoints As Integer
    Dim IsClosed2 As Boolean

    ' Iterate to the third subpath.
    subpathPoints = myPathIterator.NextSubpath(myPathSection, _
        IsClosed2)
    subpathPoints = myPathIterator.NextSubpath(myPathSection, _
        IsClosed2)
    subpathPoints = myPathIterator.NextSubpath(myPathSection, _
        IsClosed2)

    ' Write the number of subpath points to the screen.
    e.Graphics.DrawString("Subpath: 3" + "   Num Points: " + _
    subpathPoints.ToString(), myFont, myBrush, 200, 20)
End Sub

NextSubpath(Int32, Int32, Boolean)

GraphicsPathIterator를 경로에 있는 다음 하위 경로로 이동합니다.Moves the GraphicsPathIterator to the next subpath in the path. 다음 하위 경로의 시작 인덱스와 끝 인덱스는 [out] 매개 변수에 들어 있습니다.The start index and end index of the next subpath are contained in the [out] parameters.

public:
 int NextSubpath([Runtime::InteropServices::Out] int % startIndex, [Runtime::InteropServices::Out] int % endIndex, [Runtime::InteropServices::Out] bool % isClosed);
public int NextSubpath (out int startIndex, out int endIndex, out bool isClosed);
member this.NextSubpath : int * int * bool -> int
Public Function NextSubpath (ByRef startIndex As Integer, ByRef endIndex As Integer, ByRef isClosed As Boolean) As Integer

매개 변수

startIndex
Int32

[out] 다음 하위 경로의 시작 인덱스를 받습니다.[out] Receives the starting index of the next subpath.

endIndex
Int32

[out] 다음 하위 경로의 끝 인덱스를 받습니다.[out] Receives the ending index of the next subpath.

isClosed
Boolean

[out] 하위 경로가 닫혀 있는지 여부를 나타냅니다.[out] Indicates whether the subpath is closed.

반환

GraphicsPath 개체의 하위 경로 수입니다.The number of subpaths in the GraphicsPath object.

예제

다음 예제는 Windows Forms에서 사용 하도록 설계 되었으며 필요 PaintEventArgs e, OnPaint 이벤트 개체입니다.The following example is designed for use with Windows Forms, and it requires PaintEventArgse, an OnPaint event object. 이 코드에서는 다음 작업을 수행합니다.The code performs the following actions:

  • GraphicsPath 개체를 만듭니다.Creates a GraphicsPath object.

  • 세 선, 사각형 및 타원을 추가합니다.Adds three lines, a rectangle, and an ellipse.

  • 화면에 점 배열에 대 한 값을 그립니다.Draws the values for the array of points to the screen.

  • GraphicsPathIterator 개체를 만듭니다.Creates a GraphicsPathIterator object.

  • NextSubpath 메서드를 호출합니다.Calls the NextSubpath method.

  • 에 대 한 반복 호출에서 반환 되는 값을 사용 하 여 NextSubpath 시작 및 화면에 각 하위 경로 대 한 값을 중지 합니다.Uses the values returned from the iterative calls to NextSubpath to draw the start and stop values for each subpath to the screen.

  • 화면에 총 하위 경로 대 한 값을 그립니다.Draws the value for the total number of subpaths to the screen.

private:
   void NextSubpathExample( PaintEventArgs^ e )
   {
      // Create the GraphicsPath.
      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);

      // Add 3 lines, a rectangle, an ellipse, and 2 markers.
      myPath->AddLines( myPoints );
      myPath->AddRectangle( myRect );
      myPath->AddEllipse( 220, 220, 100, 100 );

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

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

      // Draw the set of path points and types to the screen.
      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.
      GraphicsPathIterator^ myPathIterator = gcnew GraphicsPathIterator( myPath );
      int myStartIndex;
      int myEndIndex;
      bool myIsClosed;

      // get the number of Subpaths.
      int numSubpaths = myPathIterator->NextSubpath( myPath, myIsClosed );
      numSubpaths -= 1;

      // Rewind the Iterator.
      myPathIterator->Rewind();

      // List the Subpaths to the screen.
      j = 20;
      for ( i = 0; i < numSubpaths; i++ )
      {
         myPathIterator->NextSubpath( myStartIndex, myEndIndex, myIsClosed );
         String^ s = String::Format( "Subpath {0}:  Start: {1}", i, myStartIndex );
         s = s + String::Format( "  End: {0}  IsClosed: {1}", myEndIndex, myIsClosed );
         e->Graphics->DrawString( s, myFont, myBrush, 200, j );
         j += 20;
      }

      // Draw the total number of Subpaths to the screen.
      j += 20;
      e->Graphics->DrawString( String::Format( "Number Subpaths = {0}", numSubpaths ), myFont, myBrush, 200, j );
   }
private void NextSubpathExample(PaintEventArgs e)
{
             
    // Create the GraphicsPath.
    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);
             
    // Add 3 lines, a rectangle, an ellipse, and 2 markers.
    myPath.AddLines(myPoints);
    myPath.AddRectangle(myRect);
    myPath.AddEllipse(220, 220, 100, 100);
             
    // Get the total number of points for the path,
             
    // and the arrays of the points and types.
    int myPathPointCount = myPath.PointCount;
    PointF[] myPathPoints = myPath.PathPoints;
    byte[] myPathTypes = myPath.PathTypes;
             
    // Set up variables for drawing the array of
             
    // points to the screen.
    int i;
    float j = 20;
    Font myFont = new Font("Arial", 8);
    SolidBrush myBrush = new SolidBrush(Color.Black);
             
    // Draw the set of path points and types to the screen.
    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.
    GraphicsPathIterator myPathIterator = new
        GraphicsPathIterator(myPath);
    int myStartIndex;
    int myEndIndex;
    bool myIsClosed;
             
    // get the number of Subpaths.
    int numSubpaths = myPathIterator.NextSubpath(myPath,
        out myIsClosed);
    numSubpaths -= 1;
             
    // Rewind the Iterator.
    myPathIterator.Rewind();
             
    // List the Subpaths to the screen.
    j=20;
    for(i=0;i<numSubpaths;i++)
    {
        myPathIterator.NextSubpath(out myStartIndex,
            out myEndIndex,
            out myIsClosed);
        e.Graphics.DrawString("Subpath " + i.ToString() +
            ":  Start: " + myStartIndex.ToString()+
            "  End: " + myEndIndex.ToString() +
            "  IsClosed: " + myIsClosed.ToString(),
            myFont,
            myBrush,
            200,
            j);
        j += 20;
    }
             
    // Draw the total number of Subpaths to the screen.
    j += 20;
    e.Graphics.DrawString("Number Subpaths = " +
        numSubpaths.ToString(),
        myFont,
        myBrush,
        200,
        j);
}
Public Sub NextSubpathExample(ByVal e As PaintEventArgs)

    ' Create the GraphicsPath.
    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)

    ' Add 3 lines, a rectangle, an ellipse, and 2 markers.
    myPath.AddLines(myPoints)
    myPath.AddRectangle(myRect)
    myPath.AddEllipse(220, 220, 100, 100)

    ' Get the total number of points for the path,
    ' and the 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 drawing the array of points to 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)

    ' Draw the set of path points and types to the screen.
    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.
    Dim myPathIterator As New GraphicsPathIterator(myPath)
    Dim myStartIndex As Integer
    Dim myEndIndex As Integer
    Dim myIsClosed As Boolean

    ' get the number of Subpaths.
    Dim numSubpaths As Integer = myPathIterator.NextSubpath(myPath, _
        myIsClosed)
    numSubpaths -= 1

    ' Rewind the Iterator.
    myPathIterator.Rewind()

    ' List the Subpaths to the screen.
    j = 20
    For i = 0 To numSubpaths - 1
        myPathIterator.NextSubpath(myStartIndex, myEndIndex, _
        myIsClosed)
        e.Graphics.DrawString("Subpath " + i.ToString() + _
            ":  Start: " + myStartIndex.ToString() + "  End: " + _
            myEndIndex.ToString() + "  IsClosed: " + _
            myIsClosed.ToString(), myFont, myBrush, 200, j)
        j += 20
    Next i

    ' Draw the total number of Subpaths to the screen.
    j += 20
    e.Graphics.DrawString("Number Subpaths = " + _
        numSubpaths.ToString(), myFont, myBrush, 200, j)
End Sub

적용 대상