Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/PolygonSeries.java @ 436:6642ab6c583c

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Added vectorizer rings callback which generates polygon datasets suitable for polygon plots. gnv-artifacts/trunk@484 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sat, 26 Dec 2009 15:32:08 +0000
parents f426f55d4f7a
children 92b7ccbf6163
rev   line source
422
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1 package de.intevation.gnv.jfreechart;
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2
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3 import java.util.Map;
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4 import java.util.HashMap;
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5
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6 import org.jfree.data.Range;
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7 import org.jfree.data.general.Series;
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8
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9 /**
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10 * @author Sascha Teichmann <sascha.teichmann@intevation.de>
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11 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
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12 */
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13 public class PolygonSeries
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14 extends Series
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15 {
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16 protected CompactXYItems [] rings;
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17 protected Map attributes;
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18
436
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19 private static long uniqueKey;
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20
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21 protected synchronized static Long createUniqueKey() {
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22 return new Long(uniqueKey++);
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23 }
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24
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25 public PolygonSeries() {
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26 this(createUniqueKey(), null);
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27 }
422
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28
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29 public PolygonSeries(Comparable key, CompactXYItems [] rings) {
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30 this(key, null, rings, new HashMap());
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31 }
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32
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33 public PolygonSeries(
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34 Comparable key,
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35 String description,
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36 CompactXYItems[] rings
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37 ) {
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38 this(key, description, rings, new HashMap());
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39 }
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40
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41 public PolygonSeries(
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42 Comparable key,
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43 String description,
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44 CompactXYItems [] rings,
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45 Map attributes
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46 ) {
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47 super(key, description);
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48 this.rings = rings;
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49 this.attributes = attributes;
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50 }
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51
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52
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53 public void setRings(CompactXYItems [] rings) {
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54 this.rings = rings;
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55 }
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56
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57 public CompactXYItems [] getRings() {
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58 return rings;
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59 }
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60
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61 public void addRing(CompactXYItems newRing) {
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62 if (rings == null) {
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63 rings = new CompactXYItems [] { newRing };
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64 }
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65 else {
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66 CompactXYItems [] nRings = new CompactXYItems[rings.length + 1];
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67 System.arraycopy(rings, 0, nRings, 0, rings.length);
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68 nRings[rings.length] = newRing;
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69 rings = nRings;
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70 }
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71 }
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72
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73 public void addRings(CompactXYItems [] newRings) {
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74 if (newRings == null || newRings.length == 0) {
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75 return;
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76 }
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77 if (rings == null || rings.length == 0) {
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78 rings = newRings;
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79 }
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80 else {
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81 CompactXYItems [] both =
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82 new CompactXYItems[rings.length + newRings.length];
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83 System.arraycopy(rings, 0, both, 0, rings.length);
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84 System.arraycopy(newRings, 0, both, rings.length, newRings.length);
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85 rings = both;
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86 }
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87 }
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88
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89 public Object getAttribute(Object key) {
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90 return attributes.get(key);
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91 }
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92
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93
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94 public Object setAttribute(Object key, Object value) {
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95 return attributes.put(key, value);
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96 }
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97
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98
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99 public int getItemCount() {
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100 return rings.length;
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101 }
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102
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103
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104 public CompactXYItems getItem(int idx) {
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105 return rings[idx];
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106 }
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107
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108
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109 public Object removeAttribute(Object key) {
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110 return attributes.remove(key);
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111 }
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112
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113
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114 public boolean hasAttribute(Object key) {
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115 return attributes.containsKey(key);
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116 }
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117
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118
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119 public Range getDomainBounds() {
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120 double upper = Double.NEGATIVE_INFINITY;
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121 double lower = Double.POSITIVE_INFINITY;
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122 int count = getItemCount();
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123
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124 for (int i = 0; i < count; i++) {
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125 CompactXYItems items = getItem(i);
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126 double minX = items.getMinX();
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127 double maxX = items.getMaxX();
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128
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129 if (!Double.isNaN(minX)) {
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130 lower = Math.min(lower, minX);
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131 }
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132
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133 if (!Double.isNaN(maxX)) {
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134 upper = Math.max(upper, maxX);
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135 }
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136 }
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137
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138 if (lower > upper) {
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139 return null;
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140 }
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141
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142 return new Range(lower, upper);
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143 }
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144
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145
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146 public Range getRangeBounds() {
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147 double upper = Double.NEGATIVE_INFINITY;
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148 double lower = Double.POSITIVE_INFINITY;
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149 int count = getItemCount();
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150
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151 for (int i = 0; i < count; i++) {
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152 CompactXYItems items = getItem(i);
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153 double minY = items.getMinY();
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154 double maxY = items.getMaxY();
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155
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156 if (!Double.isNaN(minY)) {
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157 lower = Math.min(lower, minY);
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158 }
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159
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160 if (!Double.isNaN(maxY)) {
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161 upper = Math.max(upper, maxY);
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162 }
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163 }
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164
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165 if (lower > upper) {
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166 return null;
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167 }
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168
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169 return new Range(lower, upper);
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170 }
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171 }
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172 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org