GraphicsPath.Reverse メソッド
アセンブリ: System.Drawing (system.drawing.dll 内)


次のコード例は、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 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。
2 番目の点のリストでは、順序が最初のリストと逆になります。
Public Sub GraphicsPathReverseExample(ByVal e As PaintEventArgs) ' Create a path and add a line, ellipse, and arc. Dim myPath As New GraphicsPath myPath.AddLine(New Point(0, 0), New Point(100, 100)) myPath.AddEllipse(100, 100, 200, 250) myPath.AddArc(300, 250, 100, 100, 0, 90) ' Draw the first set of points to the screen. DrawPointsHelper2(e, myPath.PathPoints, 20) ' Call GraphicsPath.Reverse. myPath.Reverse() ' Draw the reversed set of points to the screen. DrawPointsHelper2(e, myPath.PathPoints, 150) End Sub ' A helper function used by GraphicsPathReverseExample to draw points. Public Sub DrawPointsHelper2(ByVal e As PaintEventArgs, _ ByVal pathPoints() As PointF, ByVal xOffset As Integer) Dim y As Integer = 20 Dim myFont As New Font("Arial", 8) Dim i As Integer For i = 0 To pathPoints.Length - 1 e.Graphics.DrawString(pathPoints(i).X.ToString() + _ ", " + pathPoints(i).Y.ToString(), myFont, Brushes.Black, _ xOffset, y) y += 20 Next i End Sub
public void GraphicsPathReverseExample(PaintEventArgs e) { // Create a path and add a line, ellipse, and arc. GraphicsPath myPath = new GraphicsPath(); myPath.AddLine(new Point(0, 0), new Point(100, 100)); myPath.AddEllipse(100, 100, 200, 250); myPath.AddArc(300, 250, 100, 100, 0, 90); // Draw the first set of points to the screen. DrawPoints2(e, myPath.PathPoints, 20); // Call GraphicsPath.Reverse. myPath.Reverse(); // Draw the reversed set of points to the screen. DrawPoints2(e, myPath.PathPoints, 150); } //End GraphicsPathReverseExample. // A helper function GraphicsPathReverseExample is used to draw the // points to the screen. public void DrawPoints2(PaintEventArgs e, PointF[] pathPoints, int xOffset) { int y = 20; Font myFont = new Font("Arial", 8); for(int i=0;i < pathPoints.Length; i++) { e.Graphics.DrawString(pathPoints[i].X.ToString() + ", " + pathPoints[i].Y.ToString(), myFont, Brushes.Black, xOffset, y); y += 20; } } // End DrawPoints
void GraphicsPathReverseExample( PaintEventArgs^ e ) { // Create a path and add a line, ellipse, and arc. GraphicsPath^ myPath = gcnew GraphicsPath; myPath->AddLine( Point(0,0), Point(100,100) ); myPath->AddEllipse( 100, 100, 200, 250 ); myPath->AddArc( 300, 250, 100, 100, 0, 90 ); // Draw the first set of points to the screen. DrawPoints2( e, myPath->PathPoints, 20 ); // Call GraphicsPath.Reverse. myPath->Reverse(); // Draw the reversed set of points to the screen. DrawPoints2( e, myPath->PathPoints, 150 ); } //End GraphicsPathReverseExample. // A helper function GraphicsPathReverseExample is used to draw the // points to the screen. void DrawPoints2( PaintEventArgs^ e, array<PointF>^ pathPoints, int xOffset ) { int y = 20; System::Drawing::Font^ myFont = gcnew System::Drawing::Font( "Arial",8 ); for ( int i = 0; i < pathPoints->Length; i++ ) { e->Graphics->DrawString( String::Concat( pathPoints[ i ].X, ", ", pathPoints[ i ].Y ), myFont, Brushes::Black, (float)xOffset, (float)y ); y += 20; } } // End DrawPoints
public void GraphicsPathReverseExample(PaintEventArgs e) { // Create a path and add a line, ellipse, and arc. GraphicsPath myPath = new GraphicsPath(); myPath.AddLine(new Point(0, 0), new Point(100, 100)); myPath.AddEllipse(100, 100, 200, 250); myPath.AddArc(300, 250, 100, 100, 0, 90); // Draw the first set of points to the screen. DrawPoints2(e, myPath.get_PathPoints(), 20); // Call GraphicsPath.Reverse. myPath.Reverse(); // Draw the reversed set of points to the screen. DrawPoints2(e, myPath.get_PathPoints(), 150); } //GraphicsPathReverseExample //End GraphicsPathReverseExample. // A helper function GraphicsPathReverseExample is used to draw the // points to the screen. public void DrawPoints2(PaintEventArgs e, PointF pathPoints[], int xOffset) { int y = 20; Font myFont = new Font("Arial", 8); for (int i = 0; i < pathPoints.length; i++) { e.get_Graphics().DrawString(System.Convert.ToString( pathPoints[i].get_X()) + ", " + System.Convert.ToString(pathPoints[i].get_Y()), myFont, Brushes.get_Black(), xOffset, y); y += 20; } } //DrawPoints2 // End DrawPoints

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
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