MatrixAnimationUsingPath.IsAdditive 属性

public:
 property bool IsAdditive { bool get(); void set(bool value); };

public bool IsAdditive { get; set; }

member this.IsAdditive : bool with get, set

Public Property IsAdditive As Boolean

属性值

true 如果目标属性的当前值应添加到此动画的起始值，否则，为 false. 默认值为 false。

示例

以下示例使用两个类似的 MatrixAnimationUsingPath 动画对同一矩形进行动画处理。 第一个动画 IsAdditive 的属性设置为 false，因此它始终从 （0,0）， 动画的起始值对矩形进行动画处理。 第二个动画具有相同的目标值（其 PathGeometry 设置相同），但其 IsAdditive 属性设置为 true;因此，它将从应用动画时所处的任何位置对矩形进行动画处理。

<Page 
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  
  xmlns:PresentationOptions="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options" 
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  mc:Ignorable="PresentationOptions">
  <StackPanel>
      
    <!-- The Rectangle that is animated across the screen by animating
         the MatrixTransform applied to the button. -->
    <Rectangle 
      Width="50" Height="20"
      Fill="Blue"
      HorizontalAlignment="Left"
      VerticalAlignment="Top">
      <Rectangle.RenderTransform>
        <MatrixTransform x:Name="myMatrixTransform">
          <MatrixTransform.Matrix >
            <Matrix OffsetX="10" OffsetY="100"/>
          </MatrixTransform.Matrix>
        </MatrixTransform>
      </Rectangle.RenderTransform>
    </Rectangle>
    
    <StackPanel Margin="0,200,0,0" Orientation="Horizontal">
    <Button Content="Animate with IsAdditive set to False"
      HorizontalAlignment="Left" Padding="5">
      <Button.Triggers>
        <EventTrigger RoutedEvent="Button.Click">
          <BeginStoryboard>
            <Storyboard>
            
              <!-- This animation always moves the 
                   rectangle back to (0,0). -->
              <MatrixAnimationUsingPath
                Storyboard.TargetName="myMatrixTransform"
                Storyboard.TargetProperty="Matrix"
                Duration="0:0:2" 
                DoesRotateWithTangent="True" 
                IsAdditive="False">
                <MatrixAnimationUsingPath.PathGeometry>
                  <PathGeometry 
                    Figures="M 0,0 C 35,0 135,0 160,100 180,190 285,200 310,100" />
                </MatrixAnimationUsingPath.PathGeometry>
              </MatrixAnimationUsingPath>
            </Storyboard>
          </BeginStoryboard>
        </EventTrigger>
      </Button.Triggers>   
    </Button>
    
     <Button Content="Animate with IsAdditive set to True"
      HorizontalAlignment="Left" 
      Padding="5">
      <Button.Triggers>
        <EventTrigger RoutedEvent="Button.Click">
          <BeginStoryboard>
            <Storyboard>
            
              <!-- This animation moves the rectangle from 
                   its current position. -->
              <MatrixAnimationUsingPath
                Storyboard.TargetName="myMatrixTransform"
                Storyboard.TargetProperty="Matrix"
                Duration="0:0:2" 
                DoesRotateWithTangent="True"
                IsAdditive="True">
                <MatrixAnimationUsingPath.PathGeometry>
                  <PathGeometry 
                    Figures="M 0,0 C 35,0 135,0 160,100 180,190 285,200 310,100" />
                </MatrixAnimationUsingPath.PathGeometry>
              </MatrixAnimationUsingPath>
            </Storyboard>
          </BeginStoryboard>
        </EventTrigger>
      </Button.Triggers>   
    </Button>   
    </StackPanel>
    
    
  </StackPanel>
</Page>

注解

Dependency 属性信息