1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.layer.imagery;
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3 |
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4 | import static org.junit.Assert.assertEquals;
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5 | import static org.junit.Assert.assertTrue;
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6 |
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7 | import java.awt.Color;
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8 | import java.awt.Graphics2D;
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9 | import java.awt.image.BufferedImage;
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10 | import java.awt.image.DataBuffer;
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11 | import java.awt.image.IndexColorModel;
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12 |
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13 | import org.junit.Rule;
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14 | import org.junit.Test;
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15 | import org.openstreetmap.josm.testutils.JOSMTestRules;
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16 |
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17 | import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
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18 |
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19 | /**
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20 | * Tests for the {@link ColorfulImageProcessor} class.
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21 | * @author Michael Zangl
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22 | */
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23 | public class ColorfulImageProcessorTest {
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24 |
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25 | private static final int TEST_IMAGE_SIZE = 5;
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26 |
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27 | private static final int[] PALETTE = {
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28 | Color.BLACK.getRGB(),
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29 | Color.WHITE.getRGB(),
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30 | Color.GRAY.getRGB(),
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31 | Color.GREEN.getRGB(),
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32 | Color.RED.getRGB(),
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33 | Color.BLUE.getRGB(),
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34 | 0xff908050,
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35 | 0xff908070,
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36 | 0xff908070,
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37 | 0xff908070,
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38 | 0xfff02080,
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39 | };
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40 |
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41 | private static final IndexColorModel COLOR_MODEL = new IndexColorModel(8, PALETTE.length, PALETTE, 0, true, 255, DataBuffer.TYPE_BYTE);
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42 |
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43 | /**
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44 | * No special rules
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45 | */
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46 | @Rule
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47 | @SuppressFBWarnings(value = "URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD")
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48 | public JOSMTestRules test = new JOSMTestRules();
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49 |
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50 | /**
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51 | * Test {@link ColorfulImageProcessor#setColorfulness(double)} and {@link ColorfulImageProcessor#getColorfulness()}
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52 | */
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53 | @Test
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54 | public void testSetGet() {
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55 | ColorfulImageProcessor processor = new ColorfulImageProcessor();
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56 |
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57 | assertEquals(1, processor.getColorfulness(), 0.001);
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58 |
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59 | processor.setColorfulness(2);
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60 | assertEquals(2, processor.getColorfulness(), 0.001);
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61 |
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62 | processor.setColorfulness(0);
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63 | assertEquals(0, processor.getColorfulness(), 0.001);
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64 |
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65 | processor.setColorfulness(0.78);
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66 | assertEquals(0.78, processor.getColorfulness(), 0.001);
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67 |
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68 | processor.setColorfulness(1);
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69 | assertEquals(1, processor.getColorfulness(), 0.001);
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70 |
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71 | processor.setColorfulness(-1);
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72 | assertEquals(0, processor.getColorfulness(), 0.001);
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73 |
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74 | processor.setColorfulness(5);
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75 | assertEquals(5, processor.getColorfulness(), 0.001);
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76 | }
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77 |
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78 | /**
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79 | *
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80 | */
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81 | @Test
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82 | public void testProcessing() {
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83 | for (ConversionData data : new ConversionData[] {
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84 | new ConversionData(Color.BLACK, 1.5, Color.BLACK),
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85 | new ConversionData(Color.WHITE, 0.5, Color.WHITE),
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86 | new ConversionData(Color.GRAY, 0, Color.GRAY),
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87 | new ConversionData(Color.GREEN, 1, Color.GREEN),
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88 | new ConversionData(Color.RED, 1, Color.RED),
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89 | new ConversionData(Color.BLUE, 1, Color.BLUE),
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90 | new ConversionData(0x908050, 0, 0x808080),
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91 | new ConversionData(0x908070, 1, 0x908070),
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92 | new ConversionData(0x908070, 2, 0x9c7c5c),
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93 | new ConversionData(0x908070, 2, 0x9c7c5c),
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94 | new ConversionData(0xf02080, 2, 0xff00ac),
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95 | }) {
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96 | for (int type : new int[] {
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97 | BufferedImage.TYPE_3BYTE_BGR,
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98 | BufferedImage.TYPE_4BYTE_ABGR,
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99 | BufferedImage.TYPE_4BYTE_ABGR_PRE,
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100 | BufferedImage.TYPE_BYTE_INDEXED }) {
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101 | assertTrue(runProcessing(data, type));
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102 | }
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103 | }
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104 | }
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105 |
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106 | private boolean runProcessing(ConversionData data, int type) {
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107 | BufferedImage image = createImage(data.getOldColor(), type);
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108 |
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109 | ColorfulImageProcessor processor = new ColorfulImageProcessor();
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110 | processor.setColorfulness(data.getFactor());
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111 | image = processor.process(image);
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112 |
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113 | for (int x = 0; x < TEST_IMAGE_SIZE; x++) {
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114 | for (int y = 0; y < TEST_IMAGE_SIZE; y++) {
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115 | Color color = new Color(image.getRGB(x, y));
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116 | assertEquals(data + ":" + type + ": red", data.getExpectedColor().getRed(), color.getRed(), 1.05);
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117 | assertEquals(data + ":" + type + ": green", data.getExpectedColor().getGreen(), color.getGreen(), 1.05);
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118 | assertEquals(data + ":" + type + ": blue", data.getExpectedColor().getBlue(), color.getBlue(), 1.05);
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119 | }
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120 | }
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121 | return true;
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122 | }
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123 |
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124 | private BufferedImage createImage(Color color, int type) {
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125 | BufferedImage image = type == BufferedImage.TYPE_BYTE_INDEXED
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126 | ? new BufferedImage(TEST_IMAGE_SIZE, TEST_IMAGE_SIZE, type, COLOR_MODEL)
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127 | : new BufferedImage(TEST_IMAGE_SIZE, TEST_IMAGE_SIZE, type);
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128 | Graphics2D graphics = image.createGraphics();
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129 | graphics.setColor(color);
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130 | graphics.fillRect(0, 0, TEST_IMAGE_SIZE, TEST_IMAGE_SIZE);
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131 | assertEquals(color.getRGB(), image.getRGB(1, 1));
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132 | return image;
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133 | }
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134 |
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135 | private static class ConversionData {
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136 | private final Color oldColor;
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137 | private final double factor;
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138 | private final Color expectedColor;
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139 |
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140 | ConversionData(Color oldColor, double factor, Color expectedColor) {
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141 | super();
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142 | this.oldColor = oldColor;
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143 | this.factor = factor;
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144 | this.expectedColor = expectedColor;
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145 | }
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146 |
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147 | ConversionData(int oldColor, double factor, int expectedColor) {
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148 | this(new Color(oldColor), factor, new Color(expectedColor));
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149 | }
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150 |
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151 | Color getOldColor() {
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152 | return oldColor;
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153 | }
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154 |
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155 | double getFactor() {
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156 | return factor;
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157 | }
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158 |
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159 | Color getExpectedColor() {
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160 | return expectedColor;
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161 | }
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162 |
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163 | @Override
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164 | public String toString() {
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165 | return "ConversionData [oldColor=" + oldColor + ", factor=" + factor + "]";
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166 | }
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167 | }
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168 |
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169 | /**
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170 | * Test {@link ColorfulImageProcessor#toString()}
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171 | */
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172 | @Test
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173 | public void testToString() {
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174 | ColorfulImageProcessor processor = new ColorfulImageProcessor();
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175 | assertEquals("ColorfulImageProcessor [colorfulness=1.0]", processor.toString());
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176 | }
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177 | }
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