■ TChart 클래스의 BeforeDrawSeries 이벤트를 사용해 파이 차트에서 커스텀 그림자를 그리는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Drawing; using System.Windows.Forms; using Steema.TeeChart.Drawing; using Steema.TeeChart.Styles; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 타이머 /// </summary> private Timer timer; /// <summary> /// 파이 /// </summary> private Pie pie; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); Text = "TChart 클래스 : BeforeDrawSeries 이벤트를 사용해 파이 차트에서 커스텀 그림자 그리기"; #region 애니메이션 콤보 박스를 설정한다. this.animationComboBox.DropDownStyle = ComboBoxStyle.DropDownList; this.animationComboBox.Items.Add("정지"); this.animationComboBox.Items.Add("저속"); this.animationComboBox.Items.Add("고속"); this.animationComboBox.SelectedIndex = 0; #endregion #region 티차트를 설정한다. this.tChart.Panel.Pen = new ChartPen(Color.Black); this.tChart.Legend.Visible = false; #endregion #region 파이 시리즈를 설정한다. this.pie = new Pie(); this.pie.Circled = false; this.pie.FillSampleValues(); this.tChart.Series.Add(this.pie); #endregion #region 타이머를 설정한다. this.timer = new Timer(); this.timer.Interval = 200; #endregion #region 이벤트를 설정한다. this.showShadowCheckBox.CheckedChanged += showShadowCheckBox_CheckedChanged; this.animationComboBox.SelectedIndexChanged += animationComboBox_SelectedIndexChanged; this.tChart.BeforeDrawSeries += tChart_BeforeDrawSeries; this.timer.Tick += timer_Tick; #endregion } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 그림자 표시 체크 박스 체크 변경시 처리하기 - showShadowCheckBox_CheckedChanged(sender, e) /// <summary> /// 그림자 표시 체크 박스 체크 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void showShadowCheckBox_CheckedChanged(object sender, EventArgs e) { this.tChart.Refresh(); } #endregion #region 애니메이션 콤보 박스 선택 인덱스 변경시 처리하기 - animationComboBox_SelectedIndexChanged(sender, e) /// <summary> /// 애니메이션 콤보 박스 선택 인덱스 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void animationComboBox_SelectedIndexChanged(object sender, EventArgs e) { switch(this.animationComboBox.SelectedIndex) { case 0 : this.timer.Stop(); break; case 1 : this.timer.Interval = 200; this.timer.Start(); break; case 2 : this.timer.Interval = 1; this.timer.Start(); break; } } #endregion #region TChart 시리즈 그리기 전 처리하기 - tChart_BeforeDrawSeries(sender, graphics3D) /// <summary> /// TChart 시리즈 그리기 전 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="graphics3D">그래픽스 3D</param> private void tChart_BeforeDrawSeries(object sender, Graphics3D graphics3D) { Rectangle rectangle; if(this.showShadowCheckBox.Checked) { rectangle = this.tChart.Chart.ChartRect; rectangle = Rectangle.FromLTRB ( rectangle.Left + 80, rectangle.Bottom - 40, rectangle.Right - 80, rectangle.Bottom ); DrawEllipseShadow(graphics3D, this.tChart.Panel.Color, rectangle); } } #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.pie.RotationAngle = this.pie.RotationAngle + 1; } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 타원 그림자 그리기 - DrawEllipseShadow(graphics3D, color, rectangle) /// <summary> /// 타원 그림자 그리기 /// </summary> /// <param name="graphics3D">그래픽스 3D</param> /// <param name="color">색상</param> /// <param name="rectangle">사각형</param> private void DrawEllipseShadow(Graphics3D graphics3D, Color color, Rectangle rectangle) { int x; int y; int StepCount; double temporaryWidth; double temporaryHeight; graphics3D.Pen.Visible = false; graphics3D.Brush.Solid = true; graphics3D.Brush.Visible = true; graphics3D.Brush.Color = color; x = (rectangle.Left + rectangle.Right ) / 2; y = (rectangle.Top + rectangle.Bottom) / 2; StepCount = Math.Min(x, y) / 10; temporaryWidth = 0.5 * (rectangle.Right - rectangle.Left) / StepCount; temporaryHeight = 0.5 * (rectangle.Bottom - rectangle.Top ) / StepCount; for(int i = StepCount; i > 0; --i) { Graphics3D.ApplyDark(ref color, 8); graphics3D.Brush.Color = color; rectangle = Rectangle.FromLTRB ( x - Convert.ToInt32(i * temporaryWidth ), y - Convert.ToInt32(i * temporaryHeight), x + Convert.ToInt32(i * temporaryWidth ), y + Convert.ToInt32(i * temporaryHeight) ); graphics3D.Ellipse(rectangle); } } #endregion } } |
