Silverlight 动画之平移

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原文链接：http://www.cnblogs.com/caok168/archive/2012/09/16/2687260.html

本文介绍了一个使用WPF和Storyboard实现矩形平移动画的例子。通过前后台代码结合的方式，详细展示了如何定义动画路径、设置动画时长及目标位置等关键步骤。

前台页面：

View Code

<UserControl x:Class="SLPianYi.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    d:DesignHeight="600" d:DesignWidth="800">

    <Canvas>
        <Rectangle x:Name="rect" Fill="Blue" Height="100" Canvas.Left="103" Stroke="Black" Canvas.Top="112" Width="100">
            <!--<Rectangle.RenderTransform>
                <CompositeTransform/>
            </Rectangle.RenderTransform>-->
        </Rectangle>
        <Button Content="Button" Canvas.Left="504" Canvas.Top="215" Width="75" Click="Button_Click_1"/>

    </Canvas>
</UserControl>

后台代码：

View Code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace SLPianYi
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
            
        }

        private void CreateStoryboary()
        {
            //元素当前所在的坐标点
            Point currentPoint = new Point(Canvas.GetLeft(rect), Canvas.GetTop(rect));         
            //目标点坐标
            Point point = new Point(280, 245);

            //为目标控件（rect）添加此属性 (如果前台页面没有此属性的话)
            rect.RenderTransform = new CompositeTransform();

            //创建动画容器时间线
            Storyboard storyboard = new Storyboard();
            DoubleAnimation doubleAnimation = new DoubleAnimation();
            
            //创建X轴方向动画
            doubleAnimation.From = currentPoint.X;
            doubleAnimation.To = point.X;
            doubleAnimation.Duration = new Duration(new TimeSpan(0, 0, 1));
            Storyboard.SetTarget(doubleAnimation, rect);
            Storyboard.SetTargetProperty(doubleAnimation,
                new PropertyPath("(UIElement.RenderTransform).(CompositeTransform.TranslateX)"));
            storyboard.Children.Add(doubleAnimation);

            //创建Y轴方向动画
            doubleAnimation = new DoubleAnimation();
            doubleAnimation.SetValue(DoubleAnimation.FromProperty, currentPoint.Y);
            doubleAnimation.SetValue(DoubleAnimation.ToProperty, point.Y);
            doubleAnimation.SetValue(DoubleAnimation.DurationProperty, new Duration(new TimeSpan(0, 0, 1)));
            Storyboard.SetTarget(doubleAnimation, rect);
            Storyboard.SetTargetProperty(doubleAnimation, new PropertyPath("(UIElement.RenderTransform).(CompositeTransform.TranslateY)"));
            storyboard.Children.Add(doubleAnimation);

            storyboard.Begin();
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            CreateStoryboary();
        }

    }
}

在Blend中需要这样：

View Code

<UserControl
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"
    x:Class="SLPianYiDemo.MainPage"
    Width="640" Height="480">
    <UserControl.Resources>
        <Storyboard x:Name="Storyboard1">
            <DoubleAnimation Duration="0:0:0.6" To="280" Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.TranslateX)" Storyboard.TargetName="rectangle" d:IsOptimized="True"/>
            <DoubleAnimation Duration="0:0:0.6" To="280" Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.TranslateY)" Storyboard.TargetName="rectangle" d:IsOptimized="True"/>
        </Storyboard>
    </UserControl.Resources>

    <Grid x:Name="LayoutRoot" Background="White">
        <Rectangle x:Name="rectangle" Fill="#FF1010E2" HorizontalAlignment="Left" Height="76" Margin="61,116,0,0" Stroke="Black" VerticalAlignment="Top" Width="155" RenderTransformOrigin="0.5,0.5">
            <Rectangle.RenderTransform>
                <CompositeTransform/>
            </Rectangle.RenderTransform>
        </Rectangle>
    </Grid>
</UserControl>

转载于:https://www.cnblogs.com/caok168/archive/2012/09/16/2687260.html

Silverlight 动画 之 平移

Silverlight 动画之平移