WPF 故事板动画不工作 [英] WPF Storyboard Animation Not Working
问题描述
我有我的自定义 3D 模型类 (Model),其中包含 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 Storyboard
旋转 Visual3D 元素,但不幸的是它不起作用.
I have my custom 3D model class (Model) which contains Visual3D element and a Storyboard
(sb) to hold animations related to that model. I'm trying to rotate the Visual3D element using the Storyboard
but unfortunately it's not working.
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 - THIS WORKS FINE
// rotateTransform.BeginAnimation(RotateTransform3D.RotationProperty, rotateAnimation);
Storyboard.SetTargetProperty(rotateAnimation, new PropertyPath(RotateTransform3D.RotationProperty));
Storyboard.SetTarget(rotateAnimation, rotateTransform);
//add animation to the storyboard of the model
model.sb.Children.Add(rotateAnimation);
//BUT THIS APPROACH IS NOT WOKRING
model.sb.Begin();
}
推荐答案
这个答案中描述了该问题.
您需要为转换注册一个名称并调用 Storyboard.SetTargetName
,而不是使用 Storyboard.SetTarget
.此外,您必须调用 Storyboard.Begin(FrameworkElement) 并传递 FrameworkElement使用适当的名称范围作为参数(this
此处).
Instead of using Storyboard.SetTarget
you need to register a name for the transform and call Storyboard.SetTargetName
. Furthermore you must call Storyboard.Begin(FrameworkElement) and pass a FrameworkElement with the appropriate name scope as parameter (this
here).
RegisterName("RotateTransform", rotateTransform);
Storyboard.SetTargetName(rotateAnimation, "RotateTransform");
...
model.sb.Begin(this);
<小时>
另外,我猜您需要在某处清除 Storyboard's Children,或者在动画开始时创建一个新的 Storyboard.
Also I guess you need to clear the Storyboard's Children somewhere, or create a new Storyboard whenever the animation is started.
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