Graphics.DrawClosedCurve 方法

定义

命名空间:

System.Drawing

程序集:

System.Drawing.Common.dll

包:

System.Drawing.Common v9.0.0-preview.6.24327.6

绘制由 Point 结构数组定义的封闭基样线。

重载

DrawClosedCurve(Pen, PointF[], Single, FillMode)	绘制由使用指定紧张的 PointF 结构数组定义的封闭基样线。
DrawClosedCurve(Pen, Point[], Single, FillMode)	绘制由使用指定紧张的 Point 结构数组定义的封闭基样线。
DrawClosedCurve(Pen, Point[])	绘制由 Point 结构数组定义的封闭基样线。
DrawClosedCurve(Pen, PointF[])	绘制由 PointF 结构数组定义的封闭基样线。

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

Source:

Graphics.cs

绘制由使用指定紧张的 PointF 结构数组定义的封闭基样线。

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

确定曲线的颜色、宽度和高度的 Pen。

points

PointF[]

定义样条的 PointF 结构的数组。

tension

Single

大于或等于 0.0F 的值，该值指定曲线的紧张度。

fillmode

FillMode

确定曲线填充方式的 FillMode 枚举的成员。 此参数是必需的，但将被忽略。

例外

ArgumentNullException

pen null。

-或-

points null。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。 该代码执行以下操作：

• 创建红色和绿色笔。

• 创建七个点来定义曲线。

• 绘制七个点之间的七条红色直线以形成多边形。

• 创建紧张和填充模式设置。

• 通过七点绘制绿色封闭曲线。

该方法使用 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

此方法绘制一个闭合的基样线，该线通过数组中的每个点。 如果最后一个点与第一个点不匹配，则会将一个额外的曲线段从最后一个点添加到第一个点以关闭它。

点数组必须至少包含四个 PointF 结构。

tension 参数确定样条的形状。 如果 tension 参数的值为 0.0F，此方法将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。

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

Source:

Graphics.cs

绘制由使用指定紧张的 Point 结构数组定义的封闭基样线。

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

确定曲线的颜色、宽度和高度的 Pen。

points

Point[]

定义样条的 Point 结构的数组。

tension

Single

大于或等于 0.0F 的值，该值指定曲线的紧张度。

fillmode

FillMode

确定曲线填充方式的 FillMode 枚举的成员。 此参数是必需的，但将被忽略。

例外

ArgumentNullException

pen null。

-或-

points null。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。 该代码执行以下操作：

• 创建红色和绿色笔。

• 创建七个点来定义曲线。

• 绘制七个点之间的七条红色直线以形成多边形。

• 创建紧张和填充模式设置。

• 通过七点绘制绿色封闭曲线。

该方法使用 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

此方法绘制一个闭合的基样线，该线通过数组中的每个点。 如果最后一个点与第一个点不匹配，则会将一个额外的曲线段从最后一个点添加到第一个点以关闭它。

点数组必须至少包含四个 Point 结构。

tension 参数确定样条的形状。 如果 tension 参数的值为 0.0F，此方法将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。

DrawClosedCurve(Pen, Point[])

Source:

Graphics.cs

绘制由 Point 结构数组定义的封闭基样线。

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, ... cli::array <System::Drawing::Point> ^ points);

public void DrawClosedCurve (System.Drawing.Pen pen, params System.Drawing.Point[] points);

member this.DrawClosedCurve : System.Drawing.Pen * System.Drawing.Point[] -> unit

Public Sub DrawClosedCurve (pen As Pen, ParamArray points As Point())

参数

pen

Pen

确定曲线的颜色、宽度和高度的 Pen。

points

Point[]

定义样条的 Point 结构的数组。

例外

ArgumentNullException

pen null。

-或-

points null。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。 该代码执行以下操作：

• 创建红色和绿色笔。

• 创建七个点来定义曲线。

• 绘制七个点之间的七条红色直线，形成封闭多边形。

• 通过七点绘制绿色封闭曲线。

该方法使用默认的 0.5 紧张。

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

此方法绘制一个闭合的基样线，该线通过数组中的每个点。 如果最后一个点与第一个点不匹配，则会从最后一个点添加到第一个点以关闭该图。

点数组必须至少包含四个 Point 结构。

此方法使用默认的 0.5 紧张。

DrawClosedCurve(Pen, PointF[])

Source:

Graphics.cs

绘制由 PointF 结构数组定义的封闭基样线。

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, ... cli::array <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, ParamArray points As PointF())

参数

pen

Pen

确定曲线的颜色、宽度和高度的 Pen。

points

PointF[]

定义样条的 PointF 结构的数组。

例外

ArgumentNullException

pen null。

-或-

points null。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。 该代码执行以下操作：

• 创建红色和绿色笔。

• 创建七个点来定义曲线。

• 绘制七个点之间的七条红色直线，形成封闭多边形。

• 通过七点绘制绿色封闭曲线。

该方法使用默认的 0.5 紧张。

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

此方法绘制一个闭合的基样线，该线通过数组中的每个点。 如果最后一个点与第一个点不匹配，则会将一个额外的曲线段从最后一个点添加到第一个点以关闭它。

点数组必须至少包含四个 PointF 结构。

此方法使用默认的 0.5 紧张。