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▶ MainWindow.xaml
<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>
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▶ MainWindow.xaml.cs
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
}
}
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