Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/PolygonSeries.java @ 1115:f953c9a559d8

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Added license file and license headers. gnv-artifacts/trunk@1260 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 02 Nov 2010 17:46:55 +0000
parents 22c18083225e
children
rev   line source
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.gnv.jfreechart;
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10
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11 import java.util.HashMap;
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12 import java.util.Map;
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13
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14 import org.jfree.data.Range;
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15
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16 import org.jfree.data.general.Series;
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17
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18 /**
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19 * This class represents a series of polygon items.
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20 *
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21 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha Teichmann</a>
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22 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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23 */
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24 public class PolygonSeries
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25 extends Series
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26 {
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27 /**
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28 * Polygons.
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29 */
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30 protected CompactXYItems [] rings;
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31
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32 /**
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33 * A map containing attribues.
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34 */
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35 protected Map attributes;
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36
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37 /**
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38 * The unique key of this series.
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39 */
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40 private static long uniqueKey;
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41
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42 /**
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43 *
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44 * @return a unique key.
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45 */
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46 protected synchronized static Long createUniqueKey() {
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47 return new Long(uniqueKey++);
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48 }
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49
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50 /**
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51 * Constructor to create an empty PolygonSeries with a unique key.
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52 */
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53 public PolygonSeries() {
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54 this(createUniqueKey(), null);
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55 }
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56
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57 /**
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58 *
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59 * @param key The key used for this series.
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60 * @param rings Polygons.
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61 */
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62 public PolygonSeries(Comparable key, CompactXYItems [] rings) {
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63 this(key, null, rings, new HashMap());
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64 }
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65
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66 /**
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67 *
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68 * @param key The key used for this series.
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69 * @param description A description of this series.
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70 * @param rings Polygons.
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71 */
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72 public PolygonSeries(
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73 Comparable key,
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74 String description,
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75 CompactXYItems[] rings
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76 ) {
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77 this(key, description, rings, new HashMap());
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78 }
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79
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80 /**
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81 *
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82 * @param key The key used for this series.
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83 * @param description A description of this series.
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84 * @param rings Polygons.
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85 * @param attributes Some attribues.
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86 */
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87 public PolygonSeries(
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88 Comparable key,
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89 String description,
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90 CompactXYItems [] rings,
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91 Map attributes
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92 ) {
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93 super(key, description);
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94 this.rings = rings;
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95 this.attributes = attributes;
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96 }
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97
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98
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99 public void setRings(CompactXYItems [] rings) {
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100 this.rings = rings;
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101 }
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102
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103
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104 public CompactXYItems [] getRings() {
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105 return rings;
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106 }
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107
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108
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109 public void addRing(CompactXYItems newRing) {
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110 if (rings == null) {
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111 rings = new CompactXYItems [] { newRing };
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112 }
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113 else {
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114 CompactXYItems [] nRings = new CompactXYItems[rings.length + 1];
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115 System.arraycopy(rings, 0, nRings, 0, rings.length);
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116 nRings[rings.length] = newRing;
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117 rings = nRings;
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118 }
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119 }
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120
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121
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122 public void addRings(CompactXYItems [] newRings) {
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123 if (newRings == null || newRings.length == 0) {
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124 return;
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125 }
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126 if (rings == null || rings.length == 0) {
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127 rings = newRings;
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128 }
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129 else {
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130 CompactXYItems [] both =
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131 new CompactXYItems[rings.length + newRings.length];
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132 System.arraycopy(rings, 0, both, 0, rings.length);
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133 System.arraycopy(newRings, 0, both, rings.length, newRings.length);
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134 rings = both;
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135 }
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136 }
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137
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138
422
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139 public Object getAttribute(Object key) {
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140 return attributes.get(key);
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141 }
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142
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143
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144 public Object setAttribute(Object key, Object value) {
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145 return attributes.put(key, value);
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146 }
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147
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148
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149 public int getItemCount() {
447
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150 return rings != null ? rings.length : 0;
422
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151 }
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152
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153
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154 public CompactXYItems getItem(int idx) {
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155 return rings[idx];
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156 }
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157
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158
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159 public Object removeAttribute(Object key) {
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160 return attributes.remove(key);
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161 }
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162
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163
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164 public boolean hasAttribute(Object key) {
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165 return attributes.containsKey(key);
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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 *
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171 * @return the range of the x axis.
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172 */
422
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173 public Range getDomainBounds() {
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174 double upper = Double.NEGATIVE_INFINITY;
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175 double lower = Double.POSITIVE_INFINITY;
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176 int count = getItemCount();
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177
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178 for (int i = 0; i < count; i++) {
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179 CompactXYItems items = getItem(i);
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180 double minX = items.getMinX();
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181 double maxX = items.getMaxX();
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182
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183 if (!Double.isNaN(minX)) {
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184 lower = Math.min(lower, minX);
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185 }
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186
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187 if (!Double.isNaN(maxX)) {
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188 upper = Math.max(upper, maxX);
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189 }
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190 }
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191
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192 if (lower > upper) {
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193 return null;
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194 }
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195
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196 return new Range(lower, upper);
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197 }
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198
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199
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200 /**
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201 *
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202 * @return the range of the y axis.
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203 */
422
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204 public Range getRangeBounds() {
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205 double upper = Double.NEGATIVE_INFINITY;
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206 double lower = Double.POSITIVE_INFINITY;
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207 int count = getItemCount();
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208
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209 for (int i = 0; i < count; i++) {
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210 CompactXYItems items = getItem(i);
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211 double minY = items.getMinY();
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212 double maxY = items.getMaxY();
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213
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214 if (!Double.isNaN(minY)) {
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215 lower = Math.min(lower, minY);
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216 }
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217
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218 if (!Double.isNaN(maxY)) {
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219 upper = Math.max(upper, maxY);
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220 }
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221 }
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222
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223 if (lower > upper) {
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224 return null;
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225 }
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226
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227 return new Range(lower, upper);
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228 }
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229 }
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230 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org