Last change
on this file since 10891 was
7128,
checked in by epitzer, 13 years ago
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#1696 Integrate fitness landscape analysis plugins from Heureka! repository.
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File size:
1.4 KB
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Rev | Line | |
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[7128] | 1 | using System;
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| 2 | using System.Collections.Generic;
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| 3 | using System.Drawing;
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| 4 | using System.Linq;
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| 5 |
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| 6 | namespace HeuristicLab.Analysis.FitnessLandscape {
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| 7 |
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| 8 | public class ColorGradient {
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| 9 |
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| 10 | private SortedList<double, Color> colors;
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| 11 |
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| 12 | public ColorGradient() {
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| 13 | Clear();
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| 14 | }
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| 15 |
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| 16 | public void Clear() {
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| 17 | colors = new SortedList<double, Color>();
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| 18 | }
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| 19 |
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| 20 | public Color this[double index] {
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| 21 | get {
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| 22 | if (colors.Count == 0)
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| 23 | throw new KeyNotFoundException();
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| 24 | KeyValuePair<double, Color> lower = colors.First();
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| 25 | if (index < lower.Key)
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| 26 | return lower.Value;
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| 27 | foreach (var upper in colors) {
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| 28 | if (upper.Key == index)
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| 29 | return upper.Value;
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| 30 | if (upper.Key > index) {
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| 31 | double alpha = (index - lower.Key) / (upper.Key - lower.Key);
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| 32 | return Color.FromArgb(
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| 33 | (int)Math.Round(upper.Value.A * alpha + lower.Value.A * (1 - alpha)),
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| 34 | (int)Math.Round(upper.Value.R * alpha + lower.Value.R * (1 - alpha)),
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| 35 | (int)Math.Round(upper.Value.G * alpha + lower.Value.G * (1 - alpha)),
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| 36 | (int)Math.Round(upper.Value.B * alpha + lower.Value.B * (1 - alpha)));
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| 37 | }
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| 38 | lower = upper;
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| 39 | }
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| 40 | return colors.Last().Value;
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| 41 | }
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| 42 | set {
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| 43 | colors[index] = value;
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| 44 | }
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| 45 | }
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| 46 | }
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| 47 | }
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