Graphics.DrawClosedCurve Metodo

Definizione

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture Point.

Overload

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

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture PointF usando una tensione specificata.

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

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture Point usando una tensione specificata.

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

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture Point.

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

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture PointF.

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)

Parametri

pen
Pen
tension
Single
fillmode
FillMode

Si applica a

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

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture PointF usando una tensione specificata.

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)

Parametri

pen
Pen

Oggetto Pen che determina il colore, la larghezza e l'altezza della curva.

points
PointF[]

Matrice di strutture PointF che definiscono la spline.

tension
Single

Valore superiore o uguale a 0,0 F che specifica la tensione della curva.

fillmode
FillMode

Membro dell'enumerazione FillMode che determina come viene riempita la curva. Questo parametro è obbligatorio ma viene ignorato.

Eccezioni

pen è null.

-oppure-

points è null.

Esempio

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgse, che è un parametro del Paint gestore eventi. Il codice esegue le azioni seguenti:

  • Crea penne rosse e verdi.

  • Crea sette punti per definire la curva.

  • Disegna sette linee dritte rosse tra i sette punti per formare un poligono.

  • Crea le impostazioni della modalità di tensione e riempimento.

  • Disegna una curva verde chiusa attraverso i sette punti.

Il metodo usa una tensione di 1.0 e imposta la modalità riempimento su 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

Commenti

Questo metodo disegna una spline cardinal chiusa che passa attraverso ogni punto della matrice. Se l'ultimo punto non corrisponde al primo punto, viene aggiunto un segmento di curva aggiuntivo dall'ultimo punto al primo punto per chiuderlo.

La matrice di punti deve contenere almeno quattro PointF strutture.

Il tension parametro determina la forma dello spline. Se il valore del tension parametro è 0,0F, questo metodo disegna segmenti di linea retta per connettere i punti. In genere, il tension parametro è minore o uguale a 1,0F. I valori oltre 1,0F producono risultati insoliti.

Si applica a

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

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture Point usando una tensione specificata.

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)

Parametri

pen
Pen

Oggetto Pen che determina il colore, la larghezza e l'altezza della curva.

points
Point[]

Matrice di strutture Point che definiscono la spline.

tension
Single

Valore superiore o uguale a 0,0 F che specifica la tensione della curva.

fillmode
FillMode

Membro dell'enumerazione FillMode che determina come viene riempita la curva. Questo parametro è obbligatorio ma viene ignorato.

Eccezioni

pen è null.

-oppure-

points è null.

Esempio

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgse, che è un parametro del Paint gestore eventi. Il codice esegue le azioni seguenti:

  • Crea penne rosse e verdi.

  • Crea sette punti per definire la curva.

  • Disegna sette linee dritte rosse tra i sette punti per formare un poligono.

  • Crea le impostazioni della modalità di tensione e riempimento.

  • Disegna una curva verde chiusa attraverso i sette punti.

Il metodo usa una tensione di 1.0 e imposta la modalità riempimento su 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

Commenti

Questo metodo disegna una spline cardinal chiusa che passa attraverso ogni punto della matrice. Se l'ultimo punto non corrisponde al primo punto, viene aggiunto un segmento di curva aggiuntivo dall'ultimo punto al primo punto per chiuderlo.

La matrice di punti deve contenere almeno quattro Point strutture.

Il tension parametro determina la forma dello spline. Se il valore del tension parametro è 0,0F, questo metodo disegna segmenti di linea retta per connettere i punti. In genere, il tension parametro è minore o uguale a 1,0F. I valori oltre 1,0F producono risultati insoliti.

Si applica a

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)

Parametri

pen
Pen
tension
Single
fillmode
FillMode

Si applica a

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))

Parametri

pen
Pen

Si applica a

DrawClosedCurve(Pen, Point[])

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture Point.

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())

Parametri

pen
Pen

Oggetto Pen che determina il colore, la larghezza e l'altezza della curva.

points
Point[]

Matrice di strutture Point che definiscono la spline.

Eccezioni

pen è null.

-oppure-

points è null.

Esempio

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgse, che è un parametro del Paint gestore eventi. Il codice esegue le azioni seguenti:

  • Crea penne rosse e verdi.

  • Crea sette punti per definire una curva.

  • Disegna sette linee dritte rosse tra i sette punti per formare un poligono chiuso.

  • Disegna una curva verde chiusa attraverso i sette punti.

Il metodo usa una tensione predefinita pari a 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

Commenti

Questo metodo disegna una spline cardinal chiusa che passa attraverso ogni punto della matrice. Se l'ultimo punto non corrisponde al primo punto, viene aggiunto un segmento di curva aggiuntivo dall'ultimo punto al primo punto per chiudere la figura.

La matrice di punti deve contenere almeno quattro Point strutture.

Questo metodo usa una tensione predefinita pari a 0,5.

Si applica a

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))

Parametri

pen
Pen

Si applica a

DrawClosedCurve(Pen, PointF[])

Disegna una spline di tipo Cardinal chiusa, definita da una matrice di strutture PointF.

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())

Parametri

pen
Pen

Oggetto Pen che determina il colore, la larghezza e l'altezza della curva.

points
PointF[]

Matrice di strutture PointF che definiscono la spline.

Eccezioni

pen è null.

-oppure-

points è null.

Esempio

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgse, che è un parametro del Paint gestore eventi. Il codice esegue le azioni seguenti:

  • Crea penne rosse e verdi.

  • Crea sette punti per definire una curva.

  • Disegna sette linee dritte rosse tra i sette punti per formare un poligono chiuso.

  • Disegna una curva verde chiusa attraverso i sette punti.

Il metodo usa una tensione predefinita pari a 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

Commenti

Questo metodo disegna una spline cardinal chiusa che passa attraverso ogni punto della matrice. Se l'ultimo punto non corrisponde al primo punto, viene aggiunto un segmento di curva aggiuntivo dall'ultimo punto al primo punto per chiuderlo.

La matrice di punti deve contenere almeno quattro PointF strutture.

Questo metodo usa una tensione predefinita pari a 0,5.

Si applica a