■ Axis 클래스의 Logarithmic/Labels 속성을 사용해 커스텀 로그 축을 만드는 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; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 주 레이블 배열 카운트 /// </summary> private const int MAJOR_LABEL_ARRAY_COUNT = 4; /// <summary> /// 주 레이블 배열 /// </summary> private double[] majorLabelArray = new double[MAJOR_LABEL_ARRAY_COUNT]; /// <summary> /// 보조 틱 배열 /// </summary> private double[] minorTickArray = new double[2 * MAJOR_LABEL_ARRAY_COUNT - 2]; /// <summary> /// 라인 /// </summary> private Line line; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); Text = "Axis 클래스 : Logarithmic/Labels 속성을 사용해 커스텀 로그 축 만들기"; this.majorLabelArray[0] = 0.1; this.majorLabelArray[1] = 0.2; this.majorLabelArray[2] = 0.5; this.majorLabelArray[3] = 1.0; this.minorTickArray[0] = 0.12; this.minorTickArray[1] = 0.17; this.minorTickArray[2] = 0.30; this.minorTickArray[3] = 0.38; this.minorTickArray[4] = 0.55; this.minorTickArray[5] = 0.7; this.tChart.Panel.Pen = new ChartPen(Color.Black); this.line = new Line(this.tChart.Chart); for(int i = 0; i < 100; i++) { this.line.Add(i, 2.0E-3 * (5 * i - 50) * (2 * i - 10) + 5.0); } this.logarithmicVerticalAxisCheckBox.CheckedChanged += logarithmicVerticalAxisCheckBox_CheckedChanged; this.customLogAxisIncrementCheckBox.CheckedChanged += customLogAxisIncrementCheckBox_CheckedChanged; this.tChart.BeforeDrawAxes += tChart_BeforeDrawAxes; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 로그 수직 축 체크 박스 체크 변경시 처리하기 - logarithmicVerticalAxisCheckBox_CheckedChanged(sender, e) /// <summary> /// 로그 수직 축 체크 박스 체크 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void logarithmicVerticalAxisCheckBox_CheckedChanged(object sender, EventArgs e) { this.tChart.Axes.Left.Logarithmic = this.logarithmicVerticalAxisCheckBox.Checked; } #endregion #region 커스텀 로그 축 증분 체크 박스 체크 변경시 처리하기 - customLogAxisIncrementCheckBox_CheckedChanged(sender, e) /// <summary> /// 커스텀 로그 축 증분 체크 박스 체크 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void customLogAxisIncrementCheckBox_CheckedChanged(object sender, EventArgs e) { this.tChart.Invalidate(); } #endregion #region TChart 축 그리기 전 처리하기 - tChart_BeforeDrawAxes(sender, graphics3D) /// <summary> /// TChart 축 그리기 전 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="graphics3D">그래픽스 3D</param> private void tChart_BeforeDrawAxes(object sender, Graphics3D graphics3D) { if(this.logarithmicVerticalAxisCheckBox.Checked && this.customLogAxisIncrementCheckBox.Checked) { GenerateAxisLogarithmicLabels ( graphics3D, this.line.GetVertAxis, this.majorLabelArray, this.minorTickArray, this.line.GetHorizAxis.IStartPos, this.line.GetHorizAxis.IEndPos ); this.tChart.Invalidate(); } else { this.line.GetVertAxis.Labels.Items.Clear(); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 십진수 구하기 - GetDecade(value) /// <summary> /// 십진수 구하기 /// </summary> /// <param name="value">값</param> /// <returns>십진수</returns> private int GetDecade(double value) { double absoluteValue = Math.Abs(value); int decade = 0; if(absoluteValue >= 1.0) { while(absoluteValue >= 1.0) { absoluteValue /= 10.0; decade++; } } else { while(absoluteValue < 1.0) { absoluteValue *= 10.0; decade--; } } return decade; } #endregion #region 축 로그 레이블 생성하기 - GenerateAxisLogarithmicLabels(graphics3D, axis, majorLabelArray, minorTickArray, start, end) /// <summary> /// 축 로그 레이블 생성하기 /// </summary> /// <param name="graphics3D">그래픽스 3D</param> /// <param name="axis">축</param> /// <param name="majorLabelArray">주 레이블 배열</param> /// <param name="minorTickArray">보조 틱 배열</param> /// <param name="start">시작 보조 틱</param> /// <param name="end">종료 보조 틱</param> private void GenerateAxisLogarithmicLabels(Graphics3D graphics3D, Axis axis, double[] majorLabelArray, double[] minorTickArray, int start, int end) { axis.Labels.Items.Clear(); int minimumDecade = GetDecade(axis.Minimum); int maximumDecade = GetDecade(axis.Maximum); double currentValue; int tickPosition; start -= axis.MinorTicks.Length; end += axis.MinorTicks.Length; graphics3D.Pen.Style = axis.MinorGrid.Style; graphics3D.Pen.Color = axis.MinorGrid.Color; for(int i = minimumDecade ; i <= maximumDecade; i++) { for(int j = 0; j < majorLabelArray.Length; j++) { currentValue = majorLabelArray[j] * Math.Pow(10, i); if(currentValue >= axis.Minimum && currentValue <= axis.Maximum) { axis.Labels.Items.Add(currentValue); } } for(int k = 0; k < minorTickArray.Length; k++) { currentValue = minorTickArray[k] * Math.Pow(10, i); if(currentValue >= axis.Minimum && currentValue <= axis.Maximum) { tickPosition = axis.CalcPosValue(currentValue); if(axis.Horizontal) { graphics3D.Line(tickPosition, start, tickPosition, end); } else { graphics3D.Line(start, tickPosition, end, tickPosition); } } } } } #endregion } } |
