■ PolyFitting 클래스의 Coefficient 메소드를 사용해 다항식 계수를 구하는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Drawing; using System.Text; using System.Windows.Forms; using Steema.TeeChart.Drawing; using Steema.TeeChart.Functions; using Steema.TeeChart.Styles; using Steema.TeeChart.Tools; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 패스트 라인 1 시리즈 /// </summary> private FastLine fastLine1; /// <summary> /// 다항식 맞춤 함수 /// </summary> private PolyFitting polyFitting; /// <summary> /// 패스트 라인 2 시리즈 /// </summary> private FastLine fastLine2; /// <summary> /// 커서 도구 /// </summary> private CursorTool cursorTool; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); #region 패스트 라인 1 시리즈를 생성한다. this.fastLine1 = new FastLine(); this.fastLine1.Title = "Data"; this.fastLine1.Color = Color.FromArgb(68, 102, 163); #endregion #region 다항식 맞춤 함수를 생성한다. this.polyFitting = new PolyFitting(); this.polyFitting.PolyDegree = 4; #endregion #region 패스트 라인 2 시리즈를 생성한다. this.fastLine2 = new FastLine(); this.fastLine2.Title = "Poly"; this.fastLine2.Color = Color.FromArgb(243, 156, 53); this.fastLine2.DataSource = this.fastLine1; this.fastLine2.Function = this.polyFitting; #endregion #region 커서 도구를 생성한다. this.cursorTool = new CursorTool(); #endregion #region 티차트를 설정한다. this.tChart.Tools.Add(this.cursorTool); this.tChart.Series.Add(this.fastLine1); this.tChart.Series.Add(this.fastLine2); #endregion Load += Form_Load; this.tChart.MouseMove += tChart_MouseMove; this.tChart.AfterDraw += tChart_AfterDraw; this.fastLine1.FillSampleValues(100); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 폼 로드시 처리하기 - Form_Load(sender, e) /// <summary> /// 폼 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Form_Load(object sender, EventArgs e) { ShowFunction(); } #endregion #region 티차트 마우스 이동시 처리하기 - tChart_MouseMove(sender, e) /// <summary> /// 티차트 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void tChart_MouseMove(object sender, MouseEventArgs e) { double x = this.fastLine2.GetHorizAxis.CalcPosPoint(e.X); double y = this.polyFitting.GetCurveYValue(this.fastLine1, x); this.cursorTool.XValue = x; this.cursorTool.YValue = y; } #endregion #region 티차트 그리기 후 처리하기 - tChart_AfterDraw(sender, graphics) /// <summary> /// 티차트 그리기 후 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="graphics">그래픽스 3D</param> private void tChart_AfterDraw(object sender, Graphics3D graphics) { if(this.cursorTool.XValue > this.tChart.Axes.Bottom.Minimum && this.cursorTool.XValue < this.tChart.Axes.Bottom.Maximum) { graphics.Brush.Color = Color.Red; graphics.Brush.Visible = true; int x = this.cursorTool.GetHorizAxis.CalcPosValue(this.cursorTool.XValue); int y = this.cursorTool.GetVertAxis.CalcPosValue (this.cursorTool.YValue); graphics.Rectangle(x - 5, y + 5, x + 5, y - 5); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 함수 표시하기 - ShowFunction() /// <summary> /// 함수 표시하기 /// </summary> private void ShowFunction() { StringBuilder stringBuilder = new StringBuilder(); stringBuilder.Append("y ="); for(int i = 0; i < this.polyFitting.PolyDegree; i++) { stringBuilder.Append(" "); if(this.polyFitting.Coefficient(i) >= 0.0) { if(i > 0) { stringBuilder.Append("+ "); } } stringBuilder.Append(this.polyFitting.Coefficient(i).ToString("0.00##")); if(i > 0) { stringBuilder.Append("*x"); } if(i > 1) { stringBuilder.Append("^" + i.ToString()); } } this.messageLabel.Text = "Function : " + stringBuilder.ToString().Replace("-", "- ").Replace("*", " * ").Replace("^", " ^ "); } #endregion } } |
