StreamGeometryContext.PolyLineTo(IList<Point>, Boolean, Boolean) Yöntem

  • Başvuru

Tanım

Ad Alanı:
System.Windows.Media
Bütünleştirilmiş Kod:
PresentationCore.dll

Bir veya daha fazla bağlı düz çizgi çizer.

public:
 abstract void PolyLineTo(System::Collections::Generic::IList<System::Windows::Point> ^ points, bool isStroked, bool isSmoothJoin);
public abstract void PolyLineTo (System.Collections.Generic.IList<System.Windows.Point> points, bool isStroked, bool isSmoothJoin);
abstract member PolyLineTo : System.Collections.Generic.IList<System.Windows.Point> * bool * bool -> unit
Public MustOverride Sub PolyLineTo (points As IList(Of Point), isStroked As Boolean, isSmoothJoin As Boolean)

Parametreler

points
IList<Point>

Bir veya daha fazla bağlı düz çizgi için hedef noktaları belirten nokta koleksiyonu.

isStroked
Boolean

true , segmenti işlemek için kullanıldığında segmentin konturlu Pen olmasını sağlamak için; aksi takdirde , false.

isSmoothJoin
Boolean

truebu segment ile önceki segment arasındaki birleştirmeyi, bir Penile vuruş yapıldığında köşe olarak ele almak için ; aksi takdirde . false

Özel durumlar

InvalidOperationException

yöntemi çağrılarak bir şekil başlatılmadan bir segment ekleme girişiminde bulunuldu BeginFigure(Point, Boolean, Boolean) .

Örnekler

Aşağıdaki örnekte yöntemini kullanarak üçgen çizme gösterilmektedir PolyLineTo .

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Collections.Generic;

namespace SDKSample
{
    public partial class StreamGeometryPolyLineToExample : Page
    {
        public StreamGeometryPolyLineToExample()
        {
            // Create a path to draw a geometry with.
            Path myPath = new Path();
            myPath.Stroke = Brushes.Black;
            myPath.StrokeThickness = 1;

            // Create a StreamGeometry to use to specify myPath.
            StreamGeometry geometry = new StreamGeometry();

            // Open a StreamGeometryContext that can be used to describe this StreamGeometry 
            // object's contents. 
            using (StreamGeometryContext ctx = geometry.Open())
            {
                // Begin the triangle at the point specified.
                ctx.BeginFigure(new Point(10, 100), true /* is filled */, true /* is closed */);

                // Create a collection of Point structures that will be used with the PolyLineTo 
                // Method to create a triangle.
                List<Point> pointList = new List<Point>();

                // Two Points are added to the collection. The PolyLineTo method will draw lines
                // between the Points of the collection.
                pointList.Add(new Point(100, 100));
                pointList.Add(new Point(100, 50));

                // Create a triangle using the collection of Point Structures.
                ctx.PolyLineTo(pointList, true /* is stroked */, false /* is smooth join */);
            }

            // Freeze the geometry (make it unmodifiable)
            // for additional performance benefits.
            geometry.Freeze();
            
            // specify the shape (triangle) of the path using the StreamGeometry.
            myPath.Data = geometry;

            // Add path shape to the UI.
            StackPanel mainPanel = new StackPanel();
            mainPanel.Children.Add(myPath);
            this.Content = mainPanel;
        }
    }
}


Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes
Imports System.Collections.Generic

Namespace SDKSample
    Partial Public Class StreamGeometryPolyLineToExample
        Inherits Page
        Public Sub New()
            ' Create a path to draw a geometry with.
            Dim myPath As New Path()
            myPath.Stroke = Brushes.Black
            myPath.StrokeThickness = 1

            ' Create a StreamGeometry to use to specify myPath.
            Dim geometry As New StreamGeometry()

            ' Open a StreamGeometryContext that can be used to describe this StreamGeometry 
            ' object's contents. 
            Using ctx As StreamGeometryContext = geometry.Open()
                ' Begin the triangle at the point specified.
                ctx.BeginFigure(New Point(10, 100), True, True) ' is closed  -  is filled 

                ' Create a collection of Point structures that will be used with the PolyLineTo 
                ' Method to create a triangle.
                Dim pointList As New List(Of Point)()

                ' Two Points are added to the collection. The PolyLineTo method will draw lines
                ' between the Points of the collection.
                pointList.Add(New Point(100, 100))
                pointList.Add(New Point(100, 50))

                ' Create a triangle using the collection of Point Structures.
                ctx.PolyLineTo(pointList, True, False) ' is smooth join  -  is stroked 

            End Using

            ' Freeze the geometry (make it unmodifiable)
            ' for additional performance benefits.
            geometry.Freeze()

            ' specify the shape (triangle) of the path using the StreamGeometry.
            myPath.Data = geometry

            ' Add path shape to the UI.
            Dim mainPanel As New StackPanel()
            mainPanel.Children.Add(myPath)
            Me.Content = mainPanel
        End Sub
    End Class
End Namespace

Açıklamalar

Bu yöntem, başlangıç noktası olarak önceki segmentin bitiş noktasını kullanır. Bu şekildeki ilk segmentse, yöntemi tarafından BeginFigure başlangıç noktası olarak belirtilen noktayı kullanır.

A StreamGeometry , bir veya herhangi bir Transform vuruşsuz veya doldurulmamış kesim içeriyorsa seri hale getirilemez.

Şunlara uygulanır

Ayrıca bkz.