Graphics.DrawClosedCurve 方法

定义

绘制由 Point 结构的数组定义的闭合基数样条。

重载

DrawClosedCurve(Pen, ReadOnlySpan<Point>, Single, FillMode)
DrawClosedCurve(Pen, PointF[], Single, FillMode)

使用指定的张力绘制由 PointF 结构数组定义的闭合基数样条。

DrawClosedCurve(Pen, Point[], Single, FillMode)

使用指定的张力绘制由 Point 结构数组定义的闭合基数样条。

DrawClosedCurve(Pen, ReadOnlySpan<PointF>, Single, FillMode)
DrawClosedCurve(Pen, ReadOnlySpan<Point>)
DrawClosedCurve(Pen, Point[])

绘制由 Point 结构的数组定义的闭合基数样条。

DrawClosedCurve(Pen, ReadOnlySpan<PointF>)
DrawClosedCurve(Pen, PointF[])

绘制由 PointF 结构的数组定义的闭合基数样条。

DrawClosedCurve(Pen, ReadOnlySpan<Point>, Single, FillMode)

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::Point> points, float tension, System::Drawing::Drawing2D::FillMode fillmode);
public void DrawClosedCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.Point> points, float tension, System.Drawing.Drawing2D.FillMode fillmode);
member this.DrawClosedCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.Point> * single * System.Drawing.Drawing2D.FillMode -> unit
Public Sub DrawClosedCurve (pen As Pen, points As ReadOnlySpan(Of Point), tension As Single, fillmode As FillMode)

参数

pen
Pen
tension
Single
fillmode
FillMode

适用于

DrawClosedCurve(Pen, PointF[], Single, FillMode)

使用指定的张力绘制由 PointF 结构数组定义的闭合基数样条。

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::PointF> ^ points, float tension, System::Drawing::Drawing2D::FillMode fillmode);
public void DrawClosedCurve (System.Drawing.Pen pen, System.Drawing.PointF[] points, float tension, System.Drawing.Drawing2D.FillMode fillmode);
member this.DrawClosedCurve : System.Drawing.Pen * System.Drawing.PointF[] * single * System.Drawing.Drawing2D.FillMode -> unit
Public Sub DrawClosedCurve (pen As Pen, points As PointF(), tension As Single, fillmode As FillMode)

参数

pen
Pen

Pen,它确定曲线的颜色、宽度和高度。

points
PointF[]

PointF 结构数组,这些结构定义样条。

tension
Single

大于或等于 0.0F 的值,该值指定曲线的张力。

fillmode
FillMode

FillMode 枚举的成员,它确定填充曲线的方式。 需要此参数但被忽略。

例外

pennull

pointsnull

示例

下面的代码示例旨在与 Windows 窗体 一起使用,它需要 PaintEventArgse,它是 事件处理程序的Paint一个参数。 此代码执行以下操作:

  • 创建红色和绿色笔。

  • 创建七个点来定义曲线。

  • 在七个点之间绘制七条红色直线以形成多边形。

  • 创建拉力和填充模式设置。

  • 绘制一条穿过七个点的绿色闭合曲线。

方法使用 1.0 的紧张度并将填充模式设置为 FillMode.Alternate

private:
   void DrawClosedCurvePointFTension( PaintEventArgs^ e )
   {
      // Create pens.
      Pen^ redPen = gcnew Pen( Color::Red,3.0f );
      Pen^ greenPen = gcnew Pen( Color::Green,3.0f );

      // Create points that define curve.
      PointF point1 = PointF(50.0F,50.0F);
      PointF point2 = PointF(100.0F,25.0F);
      PointF point3 = PointF(200.0F,5.0F);
      PointF point4 = PointF(250.0F,50.0F);
      PointF point5 = PointF(300.0F,100.0F);
      PointF point6 = PointF(350.0F,200.0F);
      PointF point7 = PointF(250.0F,250.0F);
      array<PointF>^ curvePoints = {point1,point2,point3,point4,point5,point6,point7};

      // Draw lines between original points to screen.
      e->Graphics->DrawLines( redPen, curvePoints );

      // Create tension and fill mode.
      float tension = 1.0F;
      FillMode aFillMode = FillMode::Alternate;

      // Draw closed curve to screen.
      e->Graphics->DrawClosedCurve( greenPen, curvePoints, tension, aFillMode );
   }
private void DrawClosedCurvePointFTension(PaintEventArgs e)
{

    // Create pens.
    Pen redPen = new Pen(Color.Red, 3);
    Pen greenPen = new Pen(Color.Green, 3);

    // Create points that define curve.
    PointF point1 = new PointF(50.0F, 50.0F);
    PointF point2 = new PointF(100.0F, 25.0F);
    PointF point3 = new PointF(200.0F, 5.0F);
    PointF point4 = new PointF(250.0F, 50.0F);
    PointF point5 = new PointF(300.0F, 100.0F);
    PointF point6 = new PointF(350.0F, 200.0F);
    PointF point7 = new PointF(250.0F, 250.0F);
    PointF[] curvePoints = {point1, point2, point3, point4, point5, point6, point7};

    // Draw lines between original points to screen.
    e.Graphics.DrawLines(redPen, curvePoints);

    // Create tension and fill mode.
    float tension = 1.0F;
    FillMode aFillMode = FillMode.Alternate;

    // Draw closed curve to screen.
    e.Graphics.DrawClosedCurve(greenPen, curvePoints, tension, aFillMode);
}
Private Sub DrawClosedCurvePointFTension(ByVal e As PaintEventArgs)

    ' Create pens.
    Dim redPen As New Pen(Color.Red, 3)
    Dim greenPen As New Pen(Color.Green, 3)

    ' Create points that define curve.
    Dim point1 As New PointF(50.0F, 50.0F)
    Dim point2 As New PointF(100.0F, 25.0F)
    Dim point3 As New PointF(200.0F, 5.0F)
    Dim point4 As New PointF(250.0F, 50.0F)
    Dim point5 As New PointF(300.0F, 100.0F)
    Dim point6 As New PointF(350.0F, 200.0F)
    Dim point7 As New PointF(250.0F, 250.0F)
    Dim curvePoints As PointF() = {point1, point2, point3, point4, _
    point5, point6, point7}

    ' Draw lines between original points to screen.
    e.Graphics.DrawLines(redPen, curvePoints)

    ' Create tension and fill mode.
    Dim tension As Single = 1.0F
    Dim aFillMode As FillMode = FillMode.Alternate

    ' Draw closed curve to screen.
    e.Graphics.DrawClosedCurve(greenPen, curvePoints, tension, _
    aFillMode)
End Sub

注解

此方法绘制一条闭合基数样条,该样条通过数组中的每个点。 如果最后一个点与第一个点不匹配,则从最后一个点到第一个点添加额外的曲线段以将其关闭。

点数组必须至少包含四个 PointF 结构。

参数 tension 确定样条的形状。 如果 参数的 tension 值为 0.0F,则此方法绘制直线段以连接点。 通常, tension 参数小于或等于 1.0F。 超过 1.0F 的值会产生异常结果。

适用于

DrawClosedCurve(Pen, Point[], Single, FillMode)

使用指定的张力绘制由 Point 结构数组定义的闭合基数样条。

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::Point> ^ points, float tension, System::Drawing::Drawing2D::FillMode fillmode);
public void DrawClosedCurve (System.Drawing.Pen pen, System.Drawing.Point[] points, float tension, System.Drawing.Drawing2D.FillMode fillmode);
member this.DrawClosedCurve : System.Drawing.Pen * System.Drawing.Point[] * single * System.Drawing.Drawing2D.FillMode -> unit
Public Sub DrawClosedCurve (pen As Pen, points As Point(), tension As Single, fillmode As FillMode)

参数

pen
Pen

Pen,它确定曲线的颜色、宽度和高度。

points
Point[]

Point 结构数组,这些结构定义样条。

tension
Single

大于或等于 0.0F 的值,该值指定曲线的张力。

fillmode
FillMode

FillMode 枚举的成员,它确定填充曲线的方式。 需要此参数但被忽略。

例外

pennull

pointsnull

示例

下面的代码示例旨在与 Windows 窗体 一起使用,它需要 PaintEventArgse,它是 事件处理程序的Paint一个参数。 此代码执行以下操作:

  • 创建红色和绿色笔。

  • 创建七个点来定义曲线。

  • 在七个点之间绘制七条红色直线以形成多边形。

  • 创建拉力和填充模式设置。

  • 绘制一条穿过七个点的绿色闭合曲线。

方法使用 1.0 的紧张度并将填充模式设置为 FillMode.Alternate

private:
   void DrawClosedCurvePointTension( PaintEventArgs^ e )
   {
      // Create pens.
      Pen^ redPen = gcnew Pen( Color::Red,3.0f );
      Pen^ greenPen = gcnew Pen( Color::Green,3.0f );

      // Create points that define curve.
      Point point1 = Point(50,50);
      Point point2 = Point(100,25);
      Point point3 = Point(200,5);
      Point point4 = Point(250,50);
      Point point5 = Point(300,100);
      Point point6 = Point(350,200);
      Point point7 = Point(250,250);
      array<Point>^ curvePoints = {point1,point2,point3,point4,point5,point6,point7};

      // Draw lines between original points to screen.
      e->Graphics->DrawLines( redPen, curvePoints );

      // Create tension and fill mode.
      float tension = 1.0F;
      FillMode aFillMode = FillMode::Alternate;

      // Draw closed curve to screen.
      e->Graphics->DrawClosedCurve( greenPen, curvePoints, tension, aFillMode );
   }
private void DrawClosedCurvePointTension(PaintEventArgs e)
{

    // Create pens.
    Pen redPen = new Pen(Color.Red, 3);
    Pen greenPen = new Pen(Color.Green, 3);

    // Create points that define curve.
    Point point1 = new Point(50, 50);
    Point point2 = new Point(100, 25);
    Point point3 = new Point(200, 5);
    Point point4 = new Point(250, 50);
    Point point5 = new Point(300, 100);
    Point point6 = new Point(350, 200);
    Point point7 = new Point(250, 250);
    Point[] curvePoints = {point1, point2, point3, point4, point5, point6, point7};

    // Draw lines between original points to screen.
    e.Graphics.DrawLines(redPen, curvePoints);

    // Create tension and fill mode.
    float tension = 1.0F;
    FillMode aFillMode = FillMode.Alternate;

    // Draw closed curve to screen.
    e.Graphics.DrawClosedCurve(greenPen, curvePoints, tension, aFillMode);
}
Private Sub DrawClosedCurvePointTension(ByVal e As PaintEventArgs)

    ' Create pens.
    Dim redPen As New Pen(Color.Red, 3)
    Dim greenPen As New Pen(Color.Green, 3)

    ' Create points that define curve.
    Dim point1 As New Point(50, 50)
    Dim point2 As New Point(100, 25)
    Dim point3 As New Point(200, 5)
    Dim point4 As New Point(250, 50)
    Dim point5 As New Point(300, 100)
    Dim point6 As New Point(350, 200)
    Dim point7 As New Point(250, 250)
    Dim curvePoints As Point() = {point1, point2, point3, point4, _
    point5, point6, point7}

    ' Draw lines between original points to screen.
    e.Graphics.DrawLines(redPen, curvePoints)

    ' Create tension and fill mode.
    Dim tension As Single = 1.0F
    Dim aFillMode As FillMode = FillMode.Alternate

    ' Draw closed curve to screen.
    e.Graphics.DrawClosedCurve(greenPen, curvePoints, tension, _
    aFillMode)
End Sub

注解

此方法绘制一条闭合基数样条,该样条通过数组中的每个点。 如果最后一个点与第一个点不匹配,则从最后一个点到第一个点添加额外的曲线段以将其关闭。

点数组必须至少包含四个 Point 结构。

参数 tension 确定样条的形状。 如果 参数的 tension 值为 0.0F,则此方法绘制直线段以连接点。 通常, tension 参数小于或等于 1.0F。 超过 1.0F 的值会产生异常结果。

适用于

DrawClosedCurve(Pen, ReadOnlySpan<PointF>, Single, FillMode)

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::PointF> points, float tension, System::Drawing::Drawing2D::FillMode fillmode);
public void DrawClosedCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.PointF> points, float tension, System.Drawing.Drawing2D.FillMode fillmode);
member this.DrawClosedCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.PointF> * single * System.Drawing.Drawing2D.FillMode -> unit
Public Sub DrawClosedCurve (pen As Pen, points As ReadOnlySpan(Of PointF), tension As Single, fillmode As FillMode)

参数

pen
Pen
tension
Single
fillmode
FillMode

适用于

DrawClosedCurve(Pen, ReadOnlySpan<Point>)

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::Point> points);
public void DrawClosedCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.Point> points);
member this.DrawClosedCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.Point> -> unit
Public Sub DrawClosedCurve (pen As Pen, points As ReadOnlySpan(Of Point))

参数

pen
Pen

适用于

DrawClosedCurve(Pen, Point[])

绘制由 Point 结构的数组定义的闭合基数样条。

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::Point> ^ points);
public void DrawClosedCurve (System.Drawing.Pen pen, System.Drawing.Point[] points);
member this.DrawClosedCurve : System.Drawing.Pen * System.Drawing.Point[] -> unit
Public Sub DrawClosedCurve (pen As Pen, points As Point())

参数

pen
Pen

Pen,它确定曲线的颜色、宽度和高度。

points
Point[]

Point 结构数组,这些结构定义样条。

例外

pennull

pointsnull

示例

下面的代码示例旨在与 Windows 窗体 一起使用,它需要 PaintEventArgse,它是 事件处理程序的Paint一个参数。 此代码执行以下操作:

  • 创建红色和绿色笔。

  • 创建七个点来定义曲线。

  • 在七个点之间绘制七条红色直线,形成一个闭合多边形。

  • 绘制一条穿过七个点的绿色闭合曲线。

方法使用默认的紧张度为 0.5。

private:
   void DrawClosedCurvePoint( PaintEventArgs^ e )
   {

      // Create pens.
      Pen^ redPen = gcnew Pen( Color::Red,3.0f );
      Pen^ greenPen = gcnew Pen( Color::Green,3.0f );

      // Create points that define curve.
      Point point1 = Point(50,50);
      Point point2 = Point(100,25);
      Point point3 = Point(200,5);
      Point point4 = Point(250,50);
      Point point5 = Point(300,100);
      Point point6 = Point(350,200);
      Point point7 = Point(250,250);
      array<Point>^ curvePoints = {point1,point2,point3,point4,point5,point6,point7};

      // Draw lines between original points to screen.
      e->Graphics->DrawLines( redPen, curvePoints );

      // Draw closed curve to screen.
      e->Graphics->DrawClosedCurve( greenPen, curvePoints );
   }
private void DrawClosedCurvePoint(PaintEventArgs e)
{
    // Create pens.
    Pen redPen   = new Pen(Color.Red, 3);
    Pen greenPen = new Pen(Color.Green, 3);
             
    // Create points that define curve.
    Point point1 = new Point(50,  50);
    Point point2 = new Point(100,  25);
    Point point3 = new Point(200,   5);
    Point point4 = new Point(250,  50);
    Point point5 = new Point(300, 100);
    Point point6 = new Point(350, 200);
    Point point7 = new Point(250, 250);
    Point[] curvePoints =
             {
                 point1,
                 point2,
                 point3,
                 point4,
                 point5,
                 point6,
                 point7
             };
             
    // Draw lines between original points to screen.
    e.Graphics.DrawLines(redPen, curvePoints);
             
    // Draw closed curve to screen.
    e.Graphics.DrawClosedCurve(greenPen, curvePoints);
}
Private Sub DrawClosedCurvePoint(ByVal e As PaintEventArgs)

    ' Create pens.
    Dim redPen As New Pen(Color.Red, 3)
    Dim greenPen As New Pen(Color.Green, 3)

    ' Create points that define curve.
    Dim point1 As New Point(50, 50)
    Dim point2 As New Point(100, 25)
    Dim point3 As New Point(200, 5)
    Dim point4 As New Point(250, 50)
    Dim point5 As New Point(300, 100)
    Dim point6 As New Point(350, 200)
    Dim point7 As New Point(250, 250)
    Dim curvePoints As Point() = {point1, point2, point3, point4, _
    point5, point6, point7}

    ' Draw lines between original points to screen.
    e.Graphics.DrawLines(redPen, curvePoints)

    ' Draw closed curve to screen.
    e.Graphics.DrawClosedCurve(greenPen, curvePoints)
End Sub

注解

此方法绘制一条闭合基数样条,该样条通过数组中的每个点。 如果最后一个点与第一个点不匹配,则会从最后一个点到第一个点添加一个额外的曲线段以结束图形。

点数组必须至少包含四个 Point 结构。

此方法使用默认的紧张度为 0.5。

适用于

DrawClosedCurve(Pen, ReadOnlySpan<PointF>)

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::PointF> points);
public void DrawClosedCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.PointF> points);
member this.DrawClosedCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.PointF> -> unit
Public Sub DrawClosedCurve (pen As Pen, points As ReadOnlySpan(Of PointF))

参数

pen
Pen

适用于

DrawClosedCurve(Pen, PointF[])

绘制由 PointF 结构的数组定义的闭合基数样条。

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::PointF> ^ points);
public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, ... cli::array <System::Drawing::PointF> ^ points);
public void DrawClosedCurve (System.Drawing.Pen pen, System.Drawing.PointF[] points);
public void DrawClosedCurve (System.Drawing.Pen pen, params System.Drawing.PointF[] points);
member this.DrawClosedCurve : System.Drawing.Pen * System.Drawing.PointF[] -> unit
Public Sub DrawClosedCurve (pen As Pen, points As PointF())
Public Sub DrawClosedCurve (pen As Pen, ParamArray points As PointF())

参数

pen
Pen

Pen,它确定曲线的颜色、宽度和高度。

points
PointF[]

PointF 结构数组,这些结构定义样条。

例外

pennull

pointsnull

示例

下面的代码示例旨在与 Windows 窗体 一起使用,它需要 PaintEventArgse,它是 事件处理程序的Paint一个参数。 此代码执行以下操作:

  • 创建红色和绿色笔。

  • 创建七个点来定义曲线。

  • 在七个点之间绘制七条红色直线,形成一个闭合多边形。

  • 绘制一条穿过七个点的绿色闭合曲线。

方法使用默认的紧张度为 0.5。

private:
   void DrawClosedCurvePointF( PaintEventArgs^ e )
   {
      // Create pens.
      Pen^ redPen = gcnew Pen( Color::Red,3.0f );
      Pen^ greenPen = gcnew Pen( Color::Green,3.0f );

      // Create points that define curve.
      PointF point1 = PointF(50.0F,50.0F);
      PointF point2 = PointF(100.0F,25.0F);
      PointF point3 = PointF(200.0F,5.0F);
      PointF point4 = PointF(250.0F,50.0F);
      PointF point5 = PointF(300.0F,100.0F);
      PointF point6 = PointF(350.0F,200.0F);
      PointF point7 = PointF(250.0F,250.0F);
      array<PointF>^ curvePoints = {point1,point2,point3,point4,point5,point6,point7};

      // Draw lines between original points to screen.
      e->Graphics->DrawLines( redPen, curvePoints );

      // Draw closed curve to screen.
      e->Graphics->DrawClosedCurve( greenPen, curvePoints );
   }
private void DrawClosedCurvePointF(PaintEventArgs e)
{

    // Create pens.
    Pen redPen = new Pen(Color.Red, 3);
    Pen greenPen = new Pen(Color.Green, 3);

    // Create points that define curve.
    PointF point1 = new PointF(50.0F, 50.0F);
    PointF point2 = new PointF(100.0F, 25.0F);
    PointF point3 = new PointF(200.0F, 5.0F);
    PointF point4 = new PointF(250.0F, 50.0F);
    PointF point5 = new PointF(300.0F, 100.0F);
    PointF point6 = new PointF(350.0F, 200.0F);
    PointF point7 = new PointF(250.0F, 250.0F);
    PointF[] curvePoints = {point1, point2, point3, point4, point5, point6, point7};

    // Draw lines between original points to screen.
    e.Graphics.DrawLines(redPen, curvePoints);

    // Draw closed curve to screen.
    e.Graphics.DrawClosedCurve(greenPen, curvePoints);
}
Private Sub DrawClosedCurvePointF(ByVal e As PaintEventArgs)

    ' Create pens.
    Dim redPen As New Pen(Color.Red, 3)
    Dim greenPen As New Pen(Color.Green, 3)

    ' Create points that define curve.
    Dim point1 As New PointF(50.0F, 50.0F)
    Dim point2 As New PointF(100.0F, 25.0F)
    Dim point3 As New PointF(200.0F, 5.0F)
    Dim point4 As New PointF(250.0F, 50.0F)
    Dim point5 As New PointF(300.0F, 100.0F)
    Dim point6 As New PointF(350.0F, 200.0F)
    Dim point7 As New PointF(250.0F, 250.0F)
    Dim curvePoints As PointF() = {point1, point2, point3, point4, _
    point5, point6, point7}

    ' Draw lines between original points to screen.
    e.Graphics.DrawLines(redPen, curvePoints)

    ' Draw closed curve to screen.
    e.Graphics.DrawClosedCurve(greenPen, curvePoints)
End Sub

注解

此方法绘制一条闭合基数样条,该样条通过数组中的每个点。 如果最后一个点与第一个点不匹配,则从最后一个点到第一个点添加额外的曲线段以将其关闭。

点数组必须至少包含四个 PointF 结构。

此方法使用默认的紧张度为 0.5。

适用于