■ NearestPoint 클래스의 Direction 속성을 사용해 최근접 포인트를 구하는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Drawing; using System.Windows.Forms; using Steema.TeeChart; using Steema.TeeChart.Drawing; using Steema.TeeChart.Styles; using Steema.TeeChart.Tools; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 수직 축 /// </summary> private Axis vertAxis; /// <summary> /// 수평 축 /// </summary> private Axis horizAxis; /// <summary> /// 상단 라인 /// </summary> private Line topLine; /// <summary> /// 하단 라인 /// </summary> private HorizLine bottomLine; /// <summary> /// 상단 라인 최근접 포인트 /// </summary> private NearestPoint topLineNearestPoint; /// <summary> /// 하단 라인 최근접 포인트 /// </summary> private NearestPoint bottomLineNearestPoint; /// <summary> /// 주석 1 /// </summary> private Annotation topLineAnnotation; /// <summary> /// 주석 2 /// </summary> private Annotation bottomLineAnnotation; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.topLineDirectionComboBox.DropDownStyle = ComboBoxStyle.DropDownList; this.topLineDirectionComboBox.Items.Add("수평" ); this.topLineDirectionComboBox.Items.Add("수직" ); this.topLineDirectionComboBox.Items.Add("수평/수직"); this.topLineDirectionComboBox.SelectedIndex = 0; this.bottomLineDirectionComboBox.DropDownStyle = ComboBoxStyle.DropDownList; this.bottomLineDirectionComboBox.Items.Add("수평" ); this.bottomLineDirectionComboBox.Items.Add("수직" ); this.bottomLineDirectionComboBox.Items.Add("수평/수직"); this.bottomLineDirectionComboBox.SelectedIndex = 1; Text = "NearestPoint 클래스 : Direction 속성을 사용해 최근접 포인트 구하기"; this.tChart.Panel.Pen = new ChartPen(Color.Black); this.tChart.Axes.Bottom.Grid.Visible = false; this.tChart.Axes.Left.StartPosition = 0; this.tChart.Axes.Left.EndPosition = 45; this.horizAxis = new Axis(true, false, this.tChart.Chart); this.horizAxis.PositionUnits = PositionUnits.Percent; this.horizAxis.RelativePosition = 55; this.horizAxis.Grid.Visible = false; this.tChart.Axes.Custom.Add(horizAxis); this.vertAxis = new Axis(false, false, this.tChart.Chart); this.vertAxis.StartPosition = 55; this.vertAxis.EndPosition = 100; this.tChart.Axes.Custom.Add(vertAxis); this.topLine = new Line(this.tChart.Chart); this.topLine.HorizAxis = HorizontalAxis.Custom; this.topLine.CustomHorizAxis = horizAxis; this.topLine.VertAxis = VerticalAxis.Left; this.topLine.FillSampleValues(); this.bottomLine = new HorizLine(this.tChart.Chart); this.bottomLine.HorizAxis = HorizontalAxis.Bottom; this.bottomLine.VertAxis = VerticalAxis.Custom; this.bottomLine.CustomVertAxis = vertAxis; this.bottomLine.FillSampleValues(); this.topLineNearestPoint = new NearestPoint(this.tChart.Chart); this.topLineNearestPoint.Size = 5; this.topLineNearestPoint.Brush.Color = bottomLine.Color; this.topLineNearestPoint.Direction = NearestPointDirection.Horizontal; this.topLineNearestPoint.DrawLine = false; this.topLineNearestPoint.Series = this.topLine; this.bottomLineNearestPoint = new NearestPoint(this.tChart.Chart); this.bottomLineNearestPoint.Size = 5; this.bottomLineNearestPoint.Brush.Color = topLine.Color; this.bottomLineNearestPoint.Direction = NearestPointDirection.Vertical; this.bottomLineNearestPoint.DrawLine = false; this.bottomLineNearestPoint.Series = bottomLine; this.topLineAnnotation = new Annotation(this.tChart.Chart); this.topLineAnnotation.Position = AnnotationPositions.LeftTop; this.topLineAnnotation.Active = false; this.bottomLineAnnotation = new Annotation(this.tChart.Chart); this.bottomLineAnnotation.Position = AnnotationPositions.RightBottom; this.bottomLineAnnotation.Active = false; this.topLineDirectionComboBox.SelectedIndexChanged += topLineDirectionComboBox_SelectedIndexChanged; this.bottomLineDirectionComboBox.SelectedIndexChanged += bottomLineDirectionComboBox_SelectedIndexChanged; this.tChart.MouseMove += tChart_MouseMove; this.topLineNearestPoint.Change += topLineNearestPoint_Change; this.bottomLineNearestPoint.Change += bottomLineNearestPoint_Change; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 상단 라인 방향 콤보 박스 선택 인덱스 변경시 처리하기 - topLineDirectionComboBox_SelectedIndexChanged(sender, e) /// <summary> /// 상단 라인 방향 콤보 박스 선택 인덱스 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void topLineDirectionComboBox_SelectedIndexChanged(object sender, EventArgs e) { this.topLineNearestPoint.Direction = (NearestPointDirection)this.topLineDirectionComboBox.SelectedIndex; } #endregion #region 하단 라인 방향 콤보 박스 선택 인덱스 변경시 처리하기 - bottomLineDirectionComboBox_SelectedIndexChanged(sender, e) /// <summary> /// 하단 라인 방향 콤보 박스 선택 인덱스 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void bottomLineDirectionComboBox_SelectedIndexChanged(object sender, EventArgs e) { this.bottomLineNearestPoint.Direction = (NearestPointDirection)this.bottomLineDirectionComboBox.SelectedIndex; } #endregion #region TChart 마우스 이동시 처리하기 - tChart_MouseMove(sender, e) /// <summary> /// TChart 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void tChart_MouseMove(object sender, MouseEventArgs e) { this.bottomLineNearestPoint.Active = e.Y > this.vertAxis.IStartPos && e.Y < this.vertAxis.IEndPos; this.topLineNearestPoint.Active = !this.bottomLineNearestPoint.Active; this.topLineAnnotation.Active = this.topLineNearestPoint.Active; this.bottomLineAnnotation.Active = this.bottomLineNearestPoint.Active; } #endregion #region 상단 라인 최근접 포인트 변경시 처리하기 - topLineNearestPoint_Change(sender, e) /// <summary> /// 상단 라인 최근접 포인트 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void topLineNearestPoint_Change(object sender, EventArgs e) { if(this.topLineNearestPoint.Point > -1) { this.topLineAnnotation.Text = $"상단 라인 Y 값 : {this.topLine.YValues[this.topLineNearestPoint.Point]}"; } } #endregion #region 하단 라인 최근접 포인트 변경시 처리하기 - bottomLineNearestPoint_Change(sender, e) /// <summary> /// 하단 라인 최근접 포인트 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void bottomLineNearestPoint_Change(object sender, EventArgs e) { if(this.bottomLineNearestPoint.Point > -1) { this.bottomLineAnnotation.Text = $"하단 라인 Y 값 : {this.bottomLine.YValues[this.bottomLineNearestPoint.Point]}"; } } #endregion } } |
