gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / datastruct / legend / GimpGradients.java @ 162
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1 | 27 | nbrodin | /* gvSIG. Geographic Information System of the Valencian Government
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2 | *
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3 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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4 | * of the Valencian Government (CIT)
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | */
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22 | package org.gvsig.raster.impl.datastruct.legend; |
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23 | |||
24 | import java.awt.Color; |
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25 | import java.io.BufferedReader; |
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26 | import java.io.BufferedWriter; |
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27 | import java.io.File; |
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28 | import java.io.FileReader; |
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29 | import java.io.FileWriter; |
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30 | import java.io.IOException; |
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31 | import java.text.NumberFormat; |
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32 | import java.util.ArrayList; |
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33 | |||
34 | import org.gvsig.fmap.dal.coverage.datastruct.ColorItem; |
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35 | 55 | nbrodin | import org.gvsig.fmap.dal.coverage.store.props.ColorTable; |
36 | 27 | nbrodin | import org.gvsig.raster.impl.datastruct.ColorItemImpl; |
37 | 162 | nbrodin | import org.gvsig.raster.impl.store.properties.DataStoreColorTable; |
38 | 27 | nbrodin | /**
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39 | * Clase GimpGradients sirve para importar y exportar gradientes de Gimp
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40 | * Los ficheros de gradientes de gimp tienen la extension .ggr
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41 | *
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42 | * @version 03/12/2007
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43 | * @author BorSanZa - Borja S?nchez Zamorano (borja.sanchez@iver.es)
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44 | */
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45 | public class GimpGradients extends RasterLegendIO { |
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46 | |||
47 | /**
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48 | * Devuelve el ColorItem asociado a una linea de un fichero de gradientes de
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49 | * Gimp
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50 | * @param strings
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51 | * @param pos
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52 | * @return
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53 | */
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54 | private ColorItem parseColorItem(String[] strings, int pos) { |
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55 | ColorItem item = new ColorItemImpl();
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56 | |||
57 | double pos1 = Double.valueOf(strings[0]).doubleValue(); |
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58 | double pos2 = Double.valueOf(strings[1]).doubleValue(); |
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59 | double pos3 = Double.valueOf(strings[2]).doubleValue(); |
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60 | if (pos == 0) |
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61 | item.setValue(pos1 * 255);
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62 | else
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63 | item.setValue(pos3 * 255);
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64 | if (pos == 0) |
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65 | item.setInterpolated((100 * (pos2 - pos1)) / (pos3 - pos1));
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66 | if (pos == 0) |
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67 | item.setColor(new Color( |
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68 | (int) (Double.valueOf(strings[3]).doubleValue() * 255.0), |
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69 | (int) (Double.valueOf(strings[4]).doubleValue() * 255.0), |
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70 | (int) (Double.valueOf(strings[5]).doubleValue() * 255.0), |
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71 | (int) (Double.valueOf(strings[6]).doubleValue() * 255.0) |
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72 | )); |
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73 | else
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74 | item.setColor(new Color( |
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75 | (int) (Double.valueOf(strings[7]).doubleValue() * 255.0), |
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76 | (int) (Double.valueOf(strings[8]).doubleValue() * 255.0), |
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77 | (int) (Double.valueOf(strings[9]).doubleValue() * 255.0), |
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78 | (int) (Double.valueOf(strings[10]).doubleValue() * 255.0) |
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79 | )); |
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80 | return item;
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81 | } |
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82 | |||
83 | /*
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84 | * (non-Javadoc)
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85 | * @see org.gvsig.raster.datastruct.io.RasterLegendIO#read(java.io.File)
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86 | */
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87 | public ColorTable read(File input) throws IOException { |
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88 | ArrayList<ColorItem> colorItems = new ArrayList<ColorItem>(); |
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89 | 162 | nbrodin | ColorTable colorTable = new DataStoreColorTable();
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90 | 27 | nbrodin | try {
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91 | BufferedReader reader = new BufferedReader(new FileReader(input)); |
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92 | String currentLine;
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93 | int cont = 0; |
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94 | while ((currentLine = reader.readLine()) != null) { |
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95 | if (cont == 1) |
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96 | colorTable.setName(currentLine.substring(6));
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97 | |||
98 | if (cont > 1) { |
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99 | String[] strings = currentLine.split("\\s+"); |
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100 | |||
101 | if (strings.length < 13) |
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102 | continue;
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103 | |||
104 | colorItems.add(parseColorItem(strings, 0));
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105 | colorItems.add(parseColorItem(strings, 1));
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106 | } |
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107 | cont++; |
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108 | } |
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109 | reader.close(); |
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110 | } catch (IOException ex) { |
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111 | throw new IOException(); |
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112 | } |
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113 | |||
114 | colorTable.createPaletteFromColorItems(colorItems, true);
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115 | return colorTable;
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116 | } |
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117 | |||
118 | /*
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119 | * (non-Javadoc)
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120 | * @see org.gvsig.raster.datastruct.io.RasterLegendIO#write(org.gvsig.raster.datastruct.ColorTable, java.io.File)
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121 | */
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122 | public void write(ColorTable colorTable, File output) throws IOException { |
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123 | ArrayList<ColorItem> colorItems = colorTable.getColorItems();
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124 | try {
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125 | BufferedWriter writer = new BufferedWriter(new FileWriter(output)); |
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126 | writer.write("GIMP Gradient\n");
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127 | writer.write("Name: " + colorTable.getName() + "\n"); |
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128 | writer.write((colorItems.size() - 1) + "\n"); |
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129 | String line;
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130 | |||
131 | for (int i = 1; i < colorItems.size(); i++) { |
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132 | double min = ((ColorItem) colorItems.get(0)).getValue(); |
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133 | double max = ((ColorItem) colorItems.get(colorItems.size() - 1)).getValue(); |
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134 | |||
135 | line = "";
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136 | ColorItem item1 = (ColorItem) colorItems.get(i - 1);
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137 | ColorItem item2 = (ColorItem) colorItems.get(i); |
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138 | |||
139 | double pos1 = (item1.getValue() - min) / (max - min);
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140 | double pos2 = (item2.getValue() - min) / (max - min);
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141 | |||
142 | NumberFormat format = NumberFormat.getNumberInstance(); |
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143 | format.setMaximumFractionDigits(6);
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144 | format.setMinimumFractionDigits(6);
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145 | line += format.format(pos1).replaceAll(",", ".") + " "; |
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146 | double interp = pos1 + (((pos2 - pos1) * item1.getInterpolated()) / 100.0); |
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147 | line += format.format(interp).replaceAll(",", ".") + " "; |
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148 | line += format.format(pos2).replaceAll(",", ".") + " "; |
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149 | |||
150 | Color color = item1.getColor();
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151 | line += format.format(color.getRed() / 255.0).replaceAll(",", ".") + " "; |
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152 | line += format.format(color.getGreen() / 255.0).replaceAll(",", ".") + " "; |
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153 | line += format.format(color.getBlue() / 255.0).replaceAll(",", ".") + " "; |
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154 | line += format.format(color.getAlpha() / 255.0).replaceAll(",", ".") + " "; |
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155 | |||
156 | color = item2.getColor(); |
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157 | line += format.format(color.getRed() / 255.0).replaceAll(",", ".") + " "; |
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158 | line += format.format(color.getGreen() / 255.0).replaceAll(",", ".") + " "; |
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159 | line += format.format(color.getBlue() / 255.0).replaceAll(",", ".") + " "; |
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160 | line += format.format(color.getAlpha() / 255.0).replaceAll(",", ".") + " "; |
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161 | |||
162 | line += "0 0\n";
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163 | writer.write(line); |
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164 | } |
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165 | writer.close(); |
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166 | } catch (IOException ex) { |
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167 | throw new IOException(); |
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168 | } |
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169 | } |
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170 | |||
171 | /*
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172 | * (non-Javadoc)
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173 | * @see org.gvsig.raster.datastruct.io.RasterLegendIO#getDescription()
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174 | */
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175 | public String getDescription() { |
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176 | return "Gimp Gradients"; |
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177 | } |
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178 | } |