' 导入命名空间
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes

Namespace SDKSample
    Partial Public Class PolyQuadraticBezierSegmentExample
        Inherits Page
        Public Sub New()

            ' Create a PathFigure to be used for the PathGeometry of myPath.
            Dim myPathFigure As New PathFigure()

            ' Set the starting point for the PathFigure specifying that the
            ' geometry starts at point 10,100.
            myPathFigure.StartPoint = New Point(10, 100)

            ' Create a PointCollection that holds the Points used to specify 
            ' the points of the PolyQuadraticBezierSegment below.
            Dim myPointCollection As New PointCollection(4)
            myPointCollection.Add(New Point(200, 200))
            myPointCollection.Add(New Point(300, 100))
            myPointCollection.Add(New Point(0, 200))
            myPointCollection.Add(New Point(30, 400))

            ' The PolyQuadraticBezierSegment specifies two Bezier curves.
            ' The first curve is from 10,100 (start point specified above)
            ' to 300,100 with a control point of 200,200. The second curve
            ' is from 200,200 (end of the last curve) to 30,400 with a 
            ' control point of 0,200.
            Dim myBezierSegment As New PolyQuadraticBezierSegment()
            myBezierSegment.Points = myPointCollection

            Dim myPathSegmentCollection As New PathSegmentCollection()
            myPathSegmentCollection.Add(myBezierSegment)

            myPathFigure.Segments = myPathSegmentCollection

            Dim myPathFigureCollection As New PathFigureCollection()
            myPathFigureCollection.Add(myPathFigure)

            Dim myPathGeometry As New PathGeometry()
            myPathGeometry.Figures = myPathFigureCollection

            ' Create a path to draw a geometry with.
            Dim myPath As New Path()
            myPath.Stroke = Brushes.Black
            myPath.StrokeThickness = 1

            ' specify the shape (quadratic Bezier curve) of the path using the StreamGeometry.
            myPath.Data = myPathGeometry

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