相关疑难解决方法(0)

为什么Storyboard.SetTargetName可以正常工作,但Storyboard.SetTarget却没有？在这里xaml -

    <Grid Grid.Row="0" ClipToBounds="True">
        <X:SmartContentControl  x:Name="smartContent"  Content="{Binding Path=MainContent}" ContentChanging="smartContent_ContentChanging">
            <X:SmartContentControl.RenderTransform>
                <TranslateTransform x:Name="translateTransformNew" X="0" Y="0"/>
            </X:SmartContentControl.RenderTransform>
        </X:SmartContentControl>
        <ContentControl Content="{Binding ElementName=smartContent, Path=LastImage}">
            <ContentControl.RenderTransform>
                <TranslateTransform x:Name="translateTransformLast" X="0" Y="0"/>
            </ContentControl.RenderTransform>
        </ContentControl>
    </Grid>

在这里C#

private void smartContent_ContentChanging(object sender, RoutedEventArgs e)
{
    Storyboard storyBoard = new Storyboard();
    DoubleAnimation doubleAnimation1 = new DoubleAnimation(0.0, -smartContent.RenderSize.Width, new Duration(new TimeSpan(0, 0, 0, 0, 500)));
    DoubleAnimation doubleAnimation2 = new DoubleAnimation(smartContent.RenderSize.Width, 0.0, new Duration(new TimeSpan(0, 0, 0, 0, 500)));

    doubleAnimation1.AccelerationRatio = 0.5;
    doubleAnimation2.DecelerationRatio = 0.5;
    storyBoard.Children.Add(doubleAnimation1);
    storyBoard.Children.Add(doubleAnimation2);
    Storyboard.SetTarget(doubleAnimation1, this.translateTransformLast); //--- this …

任何人都可以帮我试图找出为什么这不起作用.

Brush变量包含一个预先填充的画笔列表.如果我尝试BeginAnimation在迭代期间直接应用它,它可以正常工作.但是每个动画分别开始有很大的开销......

所以我试图将所有动画放在一个故事板中,然后立即将它们全部解开......

var storyBoard = new Storyboard();           
var duration = new Duration(TimeSpan.FromMilliseconds(time));
foreach (Brush brush in brushes) 
{
    var animation = new DoubleAnimation(toValue, duration);

    storyBoard.Children.Add(animation);

    Storyboard.SetTargetProperty(animation, new PropertyPath(Brush.OpacityProperty));
    Storyboard.SetTarget(animation, brush);
}

storyBoard.Begin();

这段代码什么都不做(我可以看到......).

谢谢!!

编辑:仍然不确定SetTarget方法有什么问题,要么是一个bug,要么我只是不应该使用它.无论如何,我解决了在运行时为我的画笔生成唯一名称并使用SetTargetName方法的问题.

再次感谢所有的建议.

我有我的自定义 3D 模型类 (Model)，它包含 Visual3D 元素和一个Storyboard(sb) 来保存与该模型相关的动画。我正在尝试使用 旋转 Visual3D 元素，Storyboard但不幸的是它不起作用。

这是代码片段

public void AnimationRotate(Model model, double duration, double startTime, RepeatBehavior behaviour)
    {

        //Rotate transform 3D
        RotateTransform3D rotateTransform = new RotateTransform3D();

        //assign transform to the model
        model.Visual3D.Transform = Transform3DHelper.CombineTransform(model.Visual3D.Transform, rotateTransform);

        //define the rotation axis
        AxisAngleRotation3D rotateAxis = new AxisAngleRotation3D(new Vector3D(0, 0, 1), 180);

        //create 3D rotation animation
        Rotation3DAnimation rotateAnimation = new Rotation3DAnimation(rotateAxis, TimeSpan.FromSeconds(0.5));

        //rotation behaviour
        rotateAnimation.RepeatBehavior = behaviour;

        //start animation from time
        rotateAnimation.BeginTime = TimeSpan.FromSeconds(startTime);

        //begin animation …