Graphics.DrawCurve Metodo
Definizione
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
Disegna una spline di tipo Cardinal mediante una matrice di strutture Point specificata.
Overload
DrawCurve(Pen, ReadOnlySpan<PointF>, Single) | |
DrawCurve(Pen, ReadOnlySpan<PointF>, Int32, Int32, Single) | |
DrawCurve(Pen, ReadOnlySpan<Point>, Int32, Int32, Single) | |
DrawCurve(Pen, PointF[], Int32, Int32, Single) |
Disegna una spline di tipo Cardinal mediante una matrice di strutture PointF specificata usando una tensione specificata. Offset di inizio del disegno dall'inizio della matrice. |
DrawCurve(Pen, Point[], Int32, Int32, Single) |
Disegna una spline di tipo Cardinal mediante una matrice di strutture Point specificata usando una tensione specificata. |
DrawCurve(Pen, ReadOnlySpan<PointF>, Int32, Int32) | |
DrawCurve(Pen, PointF[], Int32, Int32) |
Disegna una spline di tipo Cardinal mediante una matrice di strutture PointF specificata. Offset di inizio del disegno dall'inizio della matrice. |
DrawCurve(Pen, PointF[], Single) |
Disegna una spline di tipo Cardinal mediante una matrice di strutture PointF specificata usando una tensione specificata. |
DrawCurve(Pen, Point[], Single) |
Disegna una spline di tipo Cardinal mediante una matrice di strutture Point specificata usando una tensione specificata. |
DrawCurve(Pen, ReadOnlySpan<PointF>) | |
DrawCurve(Pen, ReadOnlySpan<Point>) | |
DrawCurve(Pen, PointF[]) |
Disegna una spline di tipo Cardinal mediante una matrice di strutture PointF specificata. |
DrawCurve(Pen, Point[]) |
Disegna una spline di tipo Cardinal mediante una matrice di strutture Point specificata. |
DrawCurve(Pen, ReadOnlySpan<Point>, Single) |
DrawCurve(Pen, ReadOnlySpan<PointF>, Single)
public:
void DrawCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::PointF> points, float tension);
public void DrawCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.PointF> points, float tension);
member this.DrawCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.PointF> * single -> unit
Public Sub DrawCurve (pen As Pen, points As ReadOnlySpan(Of PointF), tension As Single)
Parametri
- pen
- Pen
- points
- ReadOnlySpan<PointF>
- tension
- Single
Si applica a
DrawCurve(Pen, ReadOnlySpan<PointF>, Int32, Int32, Single)
public:
void DrawCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::PointF> points, int offset, int numberOfSegments, float tension);
public void DrawCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.PointF> points, int offset, int numberOfSegments, float tension);
member this.DrawCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.PointF> * int * int * single -> unit
Public Sub DrawCurve (pen As Pen, points As ReadOnlySpan(Of PointF), offset As Integer, numberOfSegments As Integer, tension As Single)
Parametri
- pen
- Pen
- points
- ReadOnlySpan<PointF>
- offset
- Int32
- numberOfSegments
- Int32
- tension
- Single
Si applica a
DrawCurve(Pen, ReadOnlySpan<Point>, Int32, Int32, Single)
public:
void DrawCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::Point> points, int offset, int numberOfSegments, float tension);
public void DrawCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.Point> points, int offset, int numberOfSegments, float tension);
member this.DrawCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.Point> * int * int * single -> unit
Public Sub DrawCurve (pen As Pen, points As ReadOnlySpan(Of Point), offset As Integer, numberOfSegments As Integer, tension As Single)
Parametri
- pen
- Pen
- points
- ReadOnlySpan<Point>
- offset
- Int32
- numberOfSegments
- Int32
- tension
- Single
Si applica a
DrawCurve(Pen, PointF[], Int32, Int32, Single)
Disegna una spline di tipo Cardinal mediante una matrice di strutture PointF specificata usando una tensione specificata. Offset di inizio del disegno dall'inizio della matrice.
public:
void DrawCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::PointF> ^ points, int offset, int numberOfSegments, float tension);
public void DrawCurve (System.Drawing.Pen pen, System.Drawing.PointF[] points, int offset, int numberOfSegments, float tension);
member this.DrawCurve : System.Drawing.Pen * System.Drawing.PointF[] * int * int * single -> unit
Public Sub DrawCurve (pen As Pen, points As PointF(), offset As Integer, numberOfSegments As Integer, tension As Single)
Parametri
- offset
- Int32
Offset dal primo elemento della matrice del parametro points
al punto iniziale della curva.
- numberOfSegments
- Int32
Numero di segmenti successivi al punto iniziale da includere nella curva.
- tension
- Single
Valore superiore o uguale a 0,0 F che specifica la tensione della curva.
Eccezioni
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 sei linee rette rosse tra i sette punti per formare un poligono incompleto.
Definisce l'offset del punto iniziale e il numero di segmenti.
Definisce la tensione.
Disegna una curva verde aperta (a partire dal terzo punto) negli ultimi cinque punti.
Il metodo imposta la tensione su 1,0.
private:
void DrawCurvePointFSegmentTension( 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 offset, number of segments, and tension.
int offset = 2;
int numSegments = 4;
float tension = 1.0F;
// Draw curve to screen.
e->Graphics->DrawCurve( greenPen, curvePoints, offset, numSegments, tension );
}
private void DrawCurvePointFSegmentTension(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 offset, number of segments, and tension.
int offset = 2;
int numSegments = 4;
float tension = 1.0F;
// Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, offset, numSegments, tension);
}
Private Sub DrawCurvePointFSegmentTension(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 offset, number of segments, and tension.
Dim offset As Integer = 2
Dim numSegments As Integer = 4
Dim tension As Single = 1.0F
' Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, offset, numSegments, _
tension)
End Sub
Commenti
Questo metodo disegna una spline cardinale che passa attraverso ogni punto della matrice.
La matrice di punti deve contenere almeno tre PointF strutture per disegnare la curva.
Il valore del offset
parametro specifica il numero di elementi da ignorare nella matrice. Il primo elemento dopo gli elementi ignorati rappresenta il punto iniziale della curva.
Il valore del numberOfSegments
parametro specifica il numero di segmenti, dopo il punto iniziale, da disegnare nella curva. Il valore del numberOfSegments
parametro deve essere almeno 1. Il valore del offset
parametro più il valore del numberOfSegments
parametro deve essere minore del numero di elementi nella matrice del points
parametro.
Il tension
parametro determina la forma della 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 superiori a 1,0F producono risultati insoliti.
Si applica a
DrawCurve(Pen, Point[], Int32, Int32, Single)
Disegna una spline di tipo Cardinal mediante una matrice di strutture Point specificata usando una tensione specificata.
public:
void DrawCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::Point> ^ points, int offset, int numberOfSegments, float tension);
public void DrawCurve (System.Drawing.Pen pen, System.Drawing.Point[] points, int offset, int numberOfSegments, float tension);
member this.DrawCurve : System.Drawing.Pen * System.Drawing.Point[] * int * int * single -> unit
Public Sub DrawCurve (pen As Pen, points As Point(), offset As Integer, numberOfSegments As Integer, tension As Single)
Parametri
- offset
- Int32
Offset dal primo elemento della matrice del parametro points
al punto iniziale della curva.
- numberOfSegments
- Int32
Numero di segmenti successivi al punto iniziale da includere nella curva.
- tension
- Single
Valore superiore o uguale a 0,0 F che specifica la tensione della curva.
Eccezioni
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 sei linee rette rosse tra i sette punti per formare un poligono incompleto.
Definisce l'offset del punto iniziale e il numero di segmenti.
Definisce la tensione.
Disegna una curva verde aperta (a partire dal terzo punto) negli ultimi cinque punti.
Il metodo imposta la tensione su 1,0.
private:
void DrawCurvePointSegmentTension( 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 offset, number of segments, and tension.
int offset = 2;
int numSegments = 4;
float tension = 1.0F;
// Draw curve to screen.
e->Graphics->DrawCurve( greenPen, curvePoints, offset, numSegments, tension );
}
private void DrawCurvePointSegmentTension(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 offset, number of segments, and tension.
int offset = 2;
int numSegments = 4;
float tension = 1.0F;
// Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, offset, numSegments, tension);
}
Private Sub DrawCurvePointSegmentTension(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 offset, number of segments, and tension.
Dim offset As Integer = 2
Dim numSegments As Integer = 4
Dim tension As Single = 1.0F
' Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, offset, numSegments, _
tension)
End Sub
Commenti
Questo metodo disegna una spline cardinale che passa attraverso ogni punto della matrice.
La matrice di punti deve contenere almeno tre Point strutture per disegnare una curva.
Il valore del offset
parametro specifica il numero di elementi da ignorare nella matrice. Il primo elemento dopo gli elementi ignorati rappresenta il punto iniziale della curva.
Il valore del numberOfSegments
parametro specifica il numero di segmenti, dopo il punto iniziale, da disegnare nella curva. Il valore del numberOfSegments
parametro deve essere almeno 1. Il valore del offset
parametro più il valore del numberOfSegments
parametro deve essere minore del numero di elementi nella matrice del points
parametro.
Il tension
parametro determina la forma della 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 superiori a 1,0F producono risultati insoliti.
Si applica a
DrawCurve(Pen, ReadOnlySpan<PointF>, Int32, Int32)
public:
void DrawCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::PointF> points, int offset, int numberOfSegments);
public void DrawCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.PointF> points, int offset, int numberOfSegments);
member this.DrawCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.PointF> * int * int -> unit
Public Sub DrawCurve (pen As Pen, points As ReadOnlySpan(Of PointF), offset As Integer, numberOfSegments As Integer)
Parametri
- pen
- Pen
- points
- ReadOnlySpan<PointF>
- offset
- Int32
- numberOfSegments
- Int32
Si applica a
DrawCurve(Pen, PointF[], Int32, Int32)
Disegna una spline di tipo Cardinal mediante una matrice di strutture PointF specificata. Offset di inizio del disegno dall'inizio della matrice.
public:
void DrawCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::PointF> ^ points, int offset, int numberOfSegments);
public void DrawCurve (System.Drawing.Pen pen, System.Drawing.PointF[] points, int offset, int numberOfSegments);
member this.DrawCurve : System.Drawing.Pen * System.Drawing.PointF[] * int * int -> unit
Public Sub DrawCurve (pen As Pen, points As PointF(), offset As Integer, numberOfSegments As Integer)
Parametri
- offset
- Int32
Offset dal primo elemento della matrice del parametro points
al punto iniziale della curva.
- numberOfSegments
- Int32
Numero di segmenti successivi al punto iniziale da includere nella curva.
Eccezioni
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 sei linee rette rosse tra i sette punti per formare un poligono incompleto.
Definisce l'offset del punto iniziale e il numero di segmenti.
Disegna una curva verde aperta (a partire dal terzo punto) negli ultimi cinque punti.
Il metodo usa una tensione predefinita pari a 0,5.
private:
void DrawCurvePointFSegments( 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 offset and number of segments.
int offset = 2;
int numSegments = 4;
// Draw curve to screen.
e->Graphics->DrawCurve( greenPen, curvePoints, offset, numSegments );
}
private void DrawCurvePointFSegments(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 offset and number of segments.
int offset = 2;
int numSegments = 4;
// Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, offset, numSegments);
}
Private Sub DrawCurvePointFSegments(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 offset and number of segments.
Dim offset As Integer = 2
Dim numSegments As Integer = 4
' Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, offset, numSegments)
End Sub
Commenti
Questo metodo disegna una spline cardinale che passa attraverso ogni punto della matrice.
La matrice di punti deve contenere almeno tre PointF strutture per disegnare una curva.
Il valore del offset
parametro specifica il numero di elementi da ignorare nella matrice. Il primo elemento dopo gli elementi ignorati rappresenta il punto iniziale della curva.
Il valore del numberOfSegments
parametro specifica il numero di segmenti, dopo il punto iniziale, da disegnare nella curva. Il valore del numberOfSegments
parametro deve essere almeno 1. Il valore del offset
parametro più il valore del numberOfSegments
parametro deve essere minore del numero di elementi nella matrice del points
parametro.
Questo metodo usa una tensione predefinita pari a 0,5.
Si applica a
DrawCurve(Pen, PointF[], Single)
Disegna una spline di tipo Cardinal mediante una matrice di strutture PointF specificata usando una tensione specificata.
public:
void DrawCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::PointF> ^ points, float tension);
public void DrawCurve (System.Drawing.Pen pen, System.Drawing.PointF[] points, float tension);
member this.DrawCurve : System.Drawing.Pen * System.Drawing.PointF[] * single -> unit
Public Sub DrawCurve (pen As Pen, points As PointF(), tension As Single)
Parametri
- tension
- Single
Valore superiore o uguale a 0,0 F che specifica la tensione della curva.
Eccezioni
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 sei linee dritte rosse tra i sette punti per formare un poligono incompleto.
Crea un'impostazione di tensione.
Disegna una curva verde aperta chiusa attraverso i sette punti.
Il metodo usa una tensione di 1,0.
private:
void DrawCurvePointFTension( 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.
float tension = 1.0F;
// Draw curve to screen.
e->Graphics->DrawCurve( greenPen, curvePoints, tension );
}
private void DrawCurvePointFTension(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.
float tension = 1.0F;
// Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, tension);
}
Private Sub DrawCurvePointFTension(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.
Dim tension As Single = 1.0F
' Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, tension)
End Sub
Commenti
Questo metodo disegna una spline cardinal che passa attraverso ogni punto della matrice.
La matrice di punti deve contenere almeno tre PointF strutture per disegnare una curva.
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
DrawCurve(Pen, Point[], Single)
Disegna una spline di tipo Cardinal mediante una matrice di strutture Point specificata usando una tensione specificata.
public:
void DrawCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::Point> ^ points, float tension);
public void DrawCurve (System.Drawing.Pen pen, System.Drawing.Point[] points, float tension);
member this.DrawCurve : System.Drawing.Pen * System.Drawing.Point[] * single -> unit
Public Sub DrawCurve (pen As Pen, points As Point(), tension As Single)
Parametri
- tension
- Single
Valore superiore o uguale a 0,0 F che specifica la tensione della curva.
Eccezioni
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 sei linee dritte rosse tra i sette punti per formare un poligono incompleto.
Crea un'impostazione di tensione.
Disegna una curva verde aperta chiusa attraverso i sette punti.
Il metodo usa una tensione di 1,0.
private:
void DrawCurvePointTension( 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.
float tension = 1.0F;
// Draw curve to screen.
e->Graphics->DrawCurve( greenPen, curvePoints, tension );
}
private void DrawCurvePointTension(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.
float tension = 1.0F;
// Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, tension);
}
Private Sub DrawCurvePointTension(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.
Dim tension As Single = 1.0F
' Draw curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints, tension)
End Sub
Commenti
Questo metodo disegna una spline cardinal che passa attraverso ogni punto della matrice.
La matrice di punti deve contenere almeno tre Point strutture per disegnare una curva.
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
DrawCurve(Pen, ReadOnlySpan<PointF>)
public:
void DrawCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::PointF> points);
public void DrawCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.PointF> points);
member this.DrawCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.PointF> -> unit
Public Sub DrawCurve (pen As Pen, points As ReadOnlySpan(Of PointF))
Parametri
- pen
- Pen
- points
- ReadOnlySpan<PointF>
Si applica a
DrawCurve(Pen, ReadOnlySpan<Point>)
public:
void DrawCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::Point> points);
public void DrawCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.Point> points);
member this.DrawCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.Point> -> unit
Public Sub DrawCurve (pen As Pen, points As ReadOnlySpan(Of Point))
Parametri
- pen
- Pen
- points
- ReadOnlySpan<Point>
Si applica a
DrawCurve(Pen, PointF[])
Disegna una spline di tipo Cardinal mediante una matrice di strutture PointF specificata.
public:
void DrawCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::PointF> ^ points);
public:
void DrawCurve(System::Drawing::Pen ^ pen, ... cli::array <System::Drawing::PointF> ^ points);
public void DrawCurve (System.Drawing.Pen pen, System.Drawing.PointF[] points);
public void DrawCurve (System.Drawing.Pen pen, params System.Drawing.PointF[] points);
member this.DrawCurve : System.Drawing.Pen * System.Drawing.PointF[] -> unit
Public Sub DrawCurve (pen As Pen, points As PointF())
Public Sub DrawCurve (pen As Pen, ParamArray points As PointF())
Parametri
Eccezioni
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 sei linee dritte rosse tra i sette punti per formare un poligono incompleto.
Disegna una curva verde aperta attraverso i sette punti.
Il metodo usa una tensione predefinita pari a 0,5.
private:
void DrawCurvePointF( 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 curve to screen.
e->Graphics->DrawCurve( greenPen, curvePoints );
}
private void DrawCurvePointF(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 curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints);
}
Private Sub DrawCurvePointF(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 curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints)
End Sub
Commenti
Questo metodo disegna una spline cardinal che passa attraverso ogni punto della matrice.
La matrice di punti deve contenere almeno tre PointF strutture per disegnare una curva.
Questo metodo usa una tensione predefinita pari a 0,5.
Si applica a
DrawCurve(Pen, Point[])
Disegna una spline di tipo Cardinal mediante una matrice di strutture Point specificata.
public:
void DrawCurve(System::Drawing::Pen ^ pen, cli::array <System::Drawing::Point> ^ points);
public:
void DrawCurve(System::Drawing::Pen ^ pen, ... cli::array <System::Drawing::Point> ^ points);
public void DrawCurve (System.Drawing.Pen pen, System.Drawing.Point[] points);
public void DrawCurve (System.Drawing.Pen pen, params System.Drawing.Point[] points);
member this.DrawCurve : System.Drawing.Pen * System.Drawing.Point[] -> unit
Public Sub DrawCurve (pen As Pen, points As Point())
Public Sub DrawCurve (pen As Pen, ParamArray points As Point())
Parametri
Eccezioni
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 sei linee dritte rosse tra i sette punti per formare un poligono incompleto.
Disegna una curva verde aperta attraverso i sette punti.
Il metodo usa una tensione predefinita pari a 0,5.
private:
void DrawCurvePoint( 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 curve to screen.
e->Graphics->DrawCurve( greenPen, curvePoints );
}
private void DrawCurvePoint(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 curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints);
}
Private Sub DrawCurvePoint(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 curve to screen.
e.Graphics.DrawCurve(greenPen, curvePoints)
End Sub
Commenti
Questo metodo disegna una spline cardinal che passa attraverso ogni punto della matrice.
La matrice di punti deve contenere almeno tre Point strutture per disegnare una curva.
Questo metodo usa una tensione predefinita pari a 0,5.
Si applica a
DrawCurve(Pen, ReadOnlySpan<Point>, Single)
public:
void DrawCurve(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::Point> points, float tension);
public void DrawCurve (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.Point> points, float tension);
member this.DrawCurve : System.Drawing.Pen * ReadOnlySpan<System.Drawing.Point> * single -> unit
Public Sub DrawCurve (pen As Pen, points As ReadOnlySpan(Of Point), tension As Single)
Parametri
- pen
- Pen
- points
- ReadOnlySpan<Point>
- tension
- Single
Si applica a
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