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source: trunk/sources/HeuristicLab.Charting/3.2/Primitives/Axis.cs @ 2716

Last change on this file since 2716 was 2, checked in by swagner, 17 years ago

Added HeuristicLab 3.0 sources from former SVN repository at revision 52

File size: 5.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Text;
25using System.Drawing;
26
27namespace HeuristicLab.Charting {
28  public class Axis : AxisPrimitiveBase {
29    public Axis(IChart chart, PointD point, AxisType axisType)
30      : base(chart, point, axisType) {
31    }
32    public Axis(IChart chart, double x, double y, AxisType axisType)
33      : this(chart, new PointD(x, y), axisType) {
34    }
35    public Axis(IChart chart, PointD point, AxisType axisType, Pen pen, Brush brush)
36      : base(chart, point, axisType, pen, brush) {
37    }
38    public Axis(IChart chart, double x, double y, AxisType axisType, Pen pen, Brush brush)
39      : this(chart, new PointD(x, y), axisType, pen, brush) {
40    }
41
42    public override void Draw(Graphics graphics) {
43      int pixelsPerInterval = 100;
44      Font axisValuesFont = new Font(FontFamily.GenericSansSerif, 10, FontStyle.Regular, GraphicsUnit.Pixel);
45      Font axisLabelsFont = new Font(FontFamily.GenericSansSerif, 14, FontStyle.Regular, GraphicsUnit.Pixel);
46
47      if ((AxisType & AxisType.Horizontal) == AxisType.Horizontal) {
48        int intervals = Chart.SizeInPixels.Width / pixelsPerInterval;
49
50        if (intervals > 0) {
51          double step = (Chart.UpperRight.X - Chart.LowerLeft.X) / intervals;
52          step = Math.Pow(10, Math.Floor(Math.Log10(step)));
53          if ((Chart.UpperRight.X - Chart.LowerLeft.X) / (step * 5) > intervals)
54            step = step * 5;
55          else if ((Chart.UpperRight.X - Chart.LowerLeft.X) / (step * 2) > intervals)
56            step = step * 2;
57
58          double x = Math.Floor(Chart.LowerLeft.X / step) * step;
59          PointD current = new PointD(x, Point.Y);
60          while (current.X <= Chart.UpperRight.X) {
61            Point p = Chart.TransformWorldToPixel(current);
62            if (ShowGrid)
63              graphics.DrawLine(Pens.LightGray, p.X, 0, p.X, Chart.SizeInPixels.Height);
64            graphics.DrawLine(Pen, p.X, p.Y - 3, p.X, p.Y + 3);
65            graphics.DrawString(current.X.ToString(),
66                                axisValuesFont,
67                                Brush,
68                                p.X,
69                                p.Y + 5,
70                                StringFormat.GenericDefault);
71            current.X = current.X + step;
72          }
73          if ((HorizontalLabel != null) && (HorizontalLabel != "")) {
74            Point p = Chart.TransformWorldToPixel(Point);
75            graphics.DrawString(HorizontalLabel,
76                                axisLabelsFont,
77                                Brush,
78                                Chart.SizeInPixels.Width - 20,
79                                p.Y + 20,
80                                new StringFormat(StringFormatFlags.DirectionRightToLeft));
81          }
82        }
83      }
84      if ((AxisType & AxisType.Vertical) == AxisType.Vertical) {
85        int intervals = Chart.SizeInPixels.Height / pixelsPerInterval;
86
87        if (intervals > 0) {
88          double step = (Chart.UpperRight.Y - Chart.LowerLeft.Y) / intervals;
89          step = Math.Pow(10, Math.Floor(Math.Log10(step)));
90          if ((Chart.UpperRight.Y - Chart.LowerLeft.Y) / (step * 5) > intervals)
91            step = step * 5;
92          else if ((Chart.UpperRight.Y - Chart.LowerLeft.Y) / (step * 2) > intervals)
93            step = step * 2;
94
95          double y = Math.Floor(Chart.LowerLeft.Y / step) * step;
96          PointD current = new PointD(Point.X, y);
97          while (current.Y <= Chart.UpperRight.Y) {
98            Point p = Chart.TransformWorldToPixel(current);
99            if (ShowGrid)
100              graphics.DrawLine(Pens.LightGray, 0, p.Y, Chart.SizeInPixels.Width, p.Y);
101            graphics.DrawLine(Pen, p.X - 3, p.Y, p.X + 3, p.Y);
102            graphics.DrawString(current.Y.ToString(),
103                                axisValuesFont,
104                                Brush,
105                                p.X + 5,
106                                p.Y,
107                                StringFormat.GenericDefault);
108            current.Y = current.Y + step;
109          }
110          if ((VerticalLabel != null) && (VerticalLabel != "")) {
111            Point p = Chart.TransformWorldToPixel(Point);
112            graphics.DrawString(VerticalLabel,
113                                axisLabelsFont,
114                                Brush,
115                                p.X - 20,
116                                20,
117                                new StringFormat(StringFormatFlags.DirectionRightToLeft | StringFormatFlags.DirectionVertical));
118          }
119        }
120      }
121      if ((AxisType & AxisType.Horizontal) == AxisType.Horizontal) {
122        Point p = Chart.TransformWorldToPixel(Point);
123        graphics.DrawLine(Pen, 0, p.Y, Chart.SizeInPixels.Width, p.Y);
124      }
125      if ((AxisType & AxisType.Vertical) == AxisType.Vertical) {
126        Point p = Chart.TransformWorldToPixel(Point);
127        graphics.DrawLine(Pen, p.X, 0, p.X, Chart.SizeInPixels.Height);
128      }
129      base.Draw(graphics);
130    }
131  }
132}
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