■ DispatcherTimer 클래스를 사용해 원 형태로 이동시키는 방법을 보여준다.
▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="800" Height="600" Title="DispatcherTimer 클래스 : 원 형태으로 이동시키기" FontFamily="나눔고딕코딩" FontSize="16"> <Canvas Name="canvas" Margin="10"> <Ellipse Name="ellipse" Width="30" Height="30" Fill="Orange" /> <Button Name="button" Canvas.Right="10" Canvas.Bottom="10" Width="100" Height="30" Content="실행" /> </Canvas> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Windows; using System.Windows.Controls; using System.Windows.Threading; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 타이머 /// </summary> private DispatcherTimer timer; /// <summary> /// 캔버스 중심 X /// </summary> private double canvasCenterX; /// <summary> /// 캔버스 중심 Y /// </summary> private double canvasCenterY; /// <summary> /// 타원 1/2 너비 /// </summary> private double ellipseHalfWidth; /// <summary> /// 타원 1/2 높이 /// </summary> private double ellipseHalfHeight; /// <summary> /// 반지름 /// </summary> private double radius = 250; /// <summary> /// 각도 /// </summary> private double angle = 0; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); this.timer = new DispatcherTimer(); this.timer.Interval = TimeSpan.FromMilliseconds(100); SizeChanged += Window_SizeChanged; Loaded += Window_Loaded; this.timer.Tick += timer_Tick; this.button.Click += button_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 윈도우 크기 변경시 처리하기 - Window_SizeChanged(sender, e) /// <summary> /// 윈도우 크기 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Window_SizeChanged(object sender, SizeChangedEventArgs e) { this.canvasCenterX = this.canvas.ActualWidth / 2; this.canvasCenterY = this.canvas.ActualHeight / 2; } #endregion #region 윈도우 로드시 처리하기 - Window_Loaded(sender, e) /// <summary> /// 윈도우 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Window_Loaded(object sender, RoutedEventArgs e) { this.ellipseHalfWidth = this.ellipse.Width / 2; this.ellipseHalfHeight = this.ellipse.Height / 2; double ellipseLeft = this.canvasCenterX - this.ellipseHalfWidth; double ellipseTop = this.canvasCenterY + this.radius - this.ellipseHalfHeight; Canvas.SetLeft(this.ellipse, ellipseLeft); Canvas.SetTop (this.ellipse, ellipseTop ); } #endregion #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { this.angle = this.angle + 10; if(this.angle > 360) { this.angle = 0; } double radian = this.angle * Math.PI / 180; double ellipseLeft = this.canvasCenterX + this.radius * Math.Sin(radian) - this.ellipseHalfWidth; double ellipseTop = this.canvasCenterY + this.radius * Math.Cos(radian) - this.ellipseHalfHeight; Canvas.SetLeft(this.ellipse, ellipseLeft); Canvas.SetTop (this.ellipse, ellipseTop ); } #endregion #region 실행 버튼 클릭시 처리하기 - button_Click(sender, e) /// <summary> /// 실행 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void button_Click(object sender, RoutedEventArgs e) { this.angle = 0; double ellipseLeft = this.canvasCenterX - this.ellipseHalfWidth; double ellipseTop = this.canvasCenterY + this.radius - this.ellipseHalfHeight; Canvas.SetLeft(this.ellipse, ellipseLeft); Canvas.SetTop (this.ellipse, ellipseTop ); this.timer.Start(); } #endregion } } |
