PolyBezierSegment 类

定义

命名空间:

Windows.UI.Xaml.Media

表示一条或多条三次方贝塞尔曲线。

public ref class PolyBezierSegment sealed : PathSegment

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.UI.Xaml.Markup.ContentProperty(Name="Points")]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
class PolyBezierSegment final : PathSegment

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.UI.Xaml.Markup.ContentProperty(Name="Points")]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
public sealed class PolyBezierSegment : PathSegment

Public NotInheritable Class PolyBezierSegment
Inherits PathSegment

<PolyBezierSegment .../>

继承

Object Platform::Object IInspectable DependencyObject PathSegment PolyBezierSegment

属性

ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute ContentPropertyAttribute

Windows 要求

设备系列	Windows 10 (在 10.0.10240.0 中引入)
API contract	Windows.Foundation.UniversalApiContract (在 v1.0 中引入)

示例

此示例演示如何使用 PolyBezierSegment 创建一系列曲线。

<Canvas Width="500" Height="100">
  <Path Stroke="Red" StrokeThickness="2">
    <Path.Data>
      <PathGeometry>
        <PathGeometry.Figures>
          <PathFigureCollection>

            <!-- The StartPoint specifies the starting point of the first curve. -->
            <PathFigure StartPoint="10,100">
              <PathFigure.Segments>
                <PathSegmentCollection>

                  <!-- The PolyBezierSegment specifies two cubic Bezier curves.
                   The first curve is from 10,100 (start point specified above)
                   to 300,100 with a control point of 0,0 and another control
                   point of 200,0. The second curve is from 300,100 
                   (end of the last curve) to 600,100 with a control point of 300,0
                   and another control point of 400,0. -->
                  <PolyBezierSegment Points="0,0 200,0 300,100 300,0 400,0 600,100" />
                </PathSegmentCollection>
              </PathFigure.Segments>
            </PathFigure>
          </PathFigureCollection>
        </PathGeometry.Figures>
      </PathGeometry>
    </Path.Data>
  </Path>
</Canvas>

构造函数

PolyBezierSegment()

初始化 PolyBezierSegment 类的新实例。

属性

Dispatcher	获取与此 对象关联的 CoreDispatcher 。 CoreDispatcher 表示可以访问 UI 线程上的 DependencyObject 的工具，即使代码是由非 UI 线程启动的。 (继承自 DependencyObject)
Points	获取或设置定义此 PolyBezierSegment 对象的 Point 集合。
PointsProperty	标识 Points 依赖属性。

方法

ClearValue(DependencyProperty)	清除依赖属性的本地值。 (继承自 DependencyObject)
GetAnimationBaseValue(DependencyProperty)	返回为依赖属性建立的任何基值，该基值适用于动画未处于活动状态的情况。 (继承自 DependencyObject)
GetValue(DependencyProperty)	从 DependencyObject 返回依赖属性的当前有效值。 (继承自 DependencyObject)
ReadLocalValue(DependencyProperty)	如果设置了本地值，则返回依赖属性的本地值。 (继承自 DependencyObject)
RegisterPropertyChangedCallback(DependencyProperty, DependencyPropertyChangedCallback)	注册一个通知函数，用于侦听此 DependencyObject 实例上特定 DependencyProperty 的更改。 (继承自 DependencyObject)
SetValue(DependencyProperty, Object)	设置 DependencyObject 上依赖属性的本地值。 (继承自 DependencyObject)
UnregisterPropertyChangedCallback(DependencyProperty, Int64)	取消以前通过调用 RegisterPropertyChangedCallback 注册的更改通知。 (继承自 DependencyObject)

另请参阅

• PathSegment
• Path
• PathGeometry
• 基于 XAML 矢量的绘图示例
• 绘制图形