Graphics.DrawClosedCurve 方法

定義

命名空間:: System.Drawing

組件:: System.Drawing.Common.dll

組件:: System.Drawing.dll

套件:: System.Drawing.Common v11.0.0-rc.1.26425.128

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

繪製一個由一組 Point 結構陣列定義的封閉基數樣條。

多載

名稱	Description
DrawClosedCurve(Pen, ReadOnlySpan<Point>, Single, FillMode)	繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。
DrawClosedCurve(Pen, PointF[], Single, FillMode)	繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。
DrawClosedCurve(Pen, Point[], Single, FillMode)	繪製一個封閉基數樣條，由一組 Point 結構組成，並使用指定的張力。
DrawClosedCurve(Pen, ReadOnlySpan<PointF>, Single, FillMode)	繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。
DrawClosedCurve(Pen, ReadOnlySpan<Point>)	繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。
DrawClosedCurve(Pen, Point[])	繪製一個由一組 Point 結構陣列定義的封閉基數樣條。
DrawClosedCurve(Pen, ReadOnlySpan<PointF>)	繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。
DrawClosedCurve(Pen, PointF[])	繪製一個由一組 PointF 結構陣列定義的封閉基數樣條。

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

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。

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)

參數

pen: Pen

Pen 這決定了曲線的顏色、寬度和高度。

points: ReadOnlySpan<Point>

定義樣條的結構陣列 PointF 。

tension: Single

值大於或等於0.0F，表示曲線張力。

fillmode: FillMode

決定曲線填充方式的列舉成員 FillMode 。此參數為必要條件，但被忽略。

適用於

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

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。

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)

參數

pen: Pen

Pen 這決定了曲線的顏色、寬度和高度。

points: PointF[]

定義樣條的結構陣列 PointF 。

tension: Single

值大於或等於0.0F，表示曲線張力。

fillmode: FillMode

決定曲線填充方式的列舉成員 FillMode 。此參數為必要條件，但被忽略。

例外狀況

ArgumentNullException

pen 是 null。

-或-

points 是 null。

範例

以下程式碼範例是為 Windows Forms 設計的，並需要 PaintEventArgse，這是 Paint 事件處理程序的參數。此程式碼會執行下列動作：

會產生紅色和綠色的筆。
產生七個點來定義曲線。
在七個點之間畫出七條紅色直線，形成一個多邊形。
建立張力和填充模式設定。
在七個點上畫出一條綠色封閉曲線。

此方法使用張力為 1.0，並將填充模式設定為 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

備註

此方法繪製一條閉基數樣條，通過陣列中的每個點。如果最後一個點與第一個點不匹配，則會從最後一個點到第一個的點再加一條曲線段來封閉它。

點陣列必須包含至少四個 PointF 結構。

參數 tension 決定了樣條的形狀。若參數值 tension 為 0.0F，此方法會繪製直線段連接點。通常，該 tension 參數小於或等於1.0F。超過1.0華氏度的數值會產生異常結果。

適用於

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

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

繪製一個封閉基數樣條，由一組 Point 結構組成，並使用指定的張力。

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)

參數

pen: Pen

Pen 這決定了曲線的顏色、寬度和高度。

points: Point[]

定義樣條的結構陣列 Point 。

tension: Single

值大於或等於0.0F，表示曲線張力。

fillmode: FillMode

決定曲線填充方式的列舉成員 FillMode 。這個參數是必須的，但通常會忽略。

例外狀況

ArgumentNullException

pen 是 null。

-或-

points 是 null。

範例

以下程式碼範例是為 Windows Forms 設計的，並需要 PaintEventArgse，這是 Paint 事件處理程序的參數。此程式碼會執行下列動作：

會產生紅色和綠色的筆。
產生七個點來定義曲線。
在七個點之間畫出七條紅色直線，形成一個多邊形。
建立張力和填充模式設定。
在七個點上畫出一條綠色封閉曲線。

此方法使用張力為 1.0，並將填充模式設定為 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

備註

此方法繪製一條閉基數樣條，通過陣列中的每個點。如果最後一個點與第一個點不匹配，則會從最後一個點到第一個的點再加一條曲線段來封閉它。

點陣列必須包含至少四個 Point 結構。

適用於

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

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。

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)

參數

pen: Pen

Pen 這決定了曲線的顏色、寬度和高度。

points: ReadOnlySpan<PointF>

定義樣條的結構陣列 PointF 。

tension: Single

值大於或等於0.0F，表示曲線張力。

fillmode: FillMode

決定曲線填充方式的列舉成員 FillMode 。此參數為必要條件，但被忽略。

適用於

DrawClosedCurve(Pen, ReadOnlySpan<Point>)

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。

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

public void DrawClosedCurve(System.Drawing.Pen pen, scoped 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))

參數

pen: Pen

Pen 這決定了曲線的顏色、寬度和高度。

points: ReadOnlySpan<Point>

定義樣條的結構陣列 PointF 。

適用於

DrawClosedCurve(Pen, Point[])

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

繪製一個由一組 Point 結構陣列定義的封閉基數樣條。

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

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);

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, ParamArray points As Point())

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

參數

pen: Pen

Pen 這決定了曲線的顏色、寬度和高度。

points: Point[]

定義樣條的結構陣列 Point 。

例外狀況

ArgumentNullException

pen 是 null。

-或-

points 是 null。

範例

以下程式碼範例是為 Windows Forms 設計的，並需要 PaintEventArgse，這是 Paint 事件處理程序的參數。此程式碼會執行下列動作：

會產生紅色和綠色的筆。
創造七個點來定義曲線。
在這七個點之間畫出七條紅色直線，形成一個閉合多邊形。
在七個點上畫出一條綠色封閉曲線。

此方法使用預設張力為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

備註

此方法繪製一條閉基數樣條，通過陣列中的每個點。如果最後一點與第一個點不符，則會從最後一點到第一個點再加一條曲線段來封閉該圖。

點陣列必須包含至少四個 Point 結構。

此方法使用預設張力為0.5。

適用於

DrawClosedCurve(Pen, ReadOnlySpan<PointF>)

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

繪製一個封閉基數樣條，由一組 PointF 結構組成，並使用指定的張力。

public:
 void DrawClosedCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::PointF> points);

public void DrawClosedCurve(System.Drawing.Pen pen, scoped 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))

參數

pen: Pen

Pen 這決定了曲線的顏色、寬度和高度。

points: ReadOnlySpan<PointF>

定義樣條的結構陣列 PointF 。

適用於

DrawClosedCurve(Pen, PointF[])

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

來源:: Graphics.cs

繪製一個由一組 PointF 結構陣列定義的封閉基數樣條。

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, params System.Drawing.PointF[] points);

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

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

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

Public Sub DrawClosedCurve (pen As Pen, points As PointF())

參數

pen: Pen

Pen 這決定了曲線的顏色、寬度和高度。

points: PointF[]

定義樣條的結構陣列 PointF 。

例外狀況

ArgumentNullException

pen 是 null。

-或-

points 是 null。

範例

以下程式碼範例是為 Windows Forms 設計的，並需要 PaintEventArgse，這是 Paint 事件處理程序的參數。此程式碼會執行下列動作：

會產生紅色和綠色的筆。
創造七個點來定義曲線。
在這七個點之間畫出七條紅色直線，形成一個閉合多邊形。
在七個點上畫出一條綠色封閉曲線。

此方法使用預設張力為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

備註

此方法繪製一條閉基數樣條，通過陣列中的每個點。如果最後一個點與第一個點不匹配，則會從最後一個點到第一個的點再加一條曲線段來封閉它。

點陣列必須包含至少四個 PointF 結構。

此方法使用預設張力為0.5。

適用於

意見反應

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