svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.geometry / org.gvsig.fmap.geometry.impl / src / main / java / org / gvsig / fmap / geom / primitive / impl / DefaultEnvelope.java @ 40435
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1 | 40435 | jjdelcerro | |
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2 | /* gvSIG. Geographic Information System of the Valencian Government
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3 | *
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4 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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5 | * of the Valencian Government (CIT)
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6 | *
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7 | * This program is free software; you can redistribute it and/or
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8 | * modify it under the terms of the GNU General Public License
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9 | * as published by the Free Software Foundation; either version 2
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10 | * of the License, or (at your option) any later version.
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11 | *
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12 | * This program is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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20 | * MA 02110-1301, USA.
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21 | *
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22 | */
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23 | |||
24 | /*
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25 | * AUTHORS (In addition to CIT):
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26 | * ${year} IVER T.I. S.A. {{Task}}
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27 | */
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28 | |||
29 | /* gvSIG. Geographic Information System of the Valencian Government
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30 | *
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31 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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32 | * of the Valencian Government (CIT)
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33 | *
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34 | * This program is free software; you can redistribute it and/or
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35 | * modify it under the terms of the GNU General Public License
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36 | * as published by the Free Software Foundation; either version 2
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37 | * of the License, or (at your option) any later version.
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38 | *
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39 | * This program is distributed in the hope that it will be useful,
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40 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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41 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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42 | * GNU General Public License for more details.
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43 | *
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44 | * You should have received a copy of the GNU General Public License
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45 | * along with this program; if not, write to the Free Software
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46 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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47 | * MA 02110-1301, USA.
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48 | *
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49 | */
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50 | /*
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51 | * AUTHORS (In addition to CIT):
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52 | * ${year} IVER T.I. S.A. {{Task}}
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53 | */
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54 | /* gvSIG. Geographic Information System of the Valencian Government
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55 | *
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56 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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57 | * of the Valencian Government (CIT)
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58 | *
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59 | * This program is free software; you can redistribute it and/or
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60 | * modify it under the terms of the GNU General Public License
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61 | * as published by the Free Software Foundation; either version 2
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62 | * of the License, or (at your option) any later version.
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63 | *
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64 | * This program is distributed in the hope that it will be useful,
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65 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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66 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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67 | * GNU General Public License for more details.
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68 | *
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69 | * You should have received a copy of the GNU General Public License
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70 | * along with this program; if not, write to the Free Software
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71 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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72 | * MA 02110-1301, USA.
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73 | *
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74 | */
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75 | /*
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76 | * AUTHORS (In addition to CIT):
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77 | * ${year} IVER T.I. S.A. {{Task}}
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78 | */
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79 | package org.gvsig.fmap.geom.primitive.impl; |
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80 | |||
81 | import java.text.MessageFormat; |
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82 | |||
83 | import org.slf4j.Logger; |
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84 | import org.slf4j.LoggerFactory; |
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85 | |||
86 | import org.gvsig.fmap.geom.Geometry; |
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87 | import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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88 | import org.gvsig.fmap.geom.Geometry.TYPES; |
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89 | import org.gvsig.fmap.geom.GeometryLocator; |
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90 | import org.gvsig.fmap.geom.GeometryManager; |
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91 | import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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92 | import org.gvsig.fmap.geom.primitive.Envelope; |
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93 | import org.gvsig.fmap.geom.primitive.EnvelopeNotInitializedException; |
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94 | import org.gvsig.fmap.geom.primitive.Point; |
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95 | import org.gvsig.fmap.geom.primitive.Surface; |
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96 | import org.gvsig.tools.ToolsLocator; |
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97 | import org.gvsig.tools.dynobject.DynStruct; |
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98 | import org.gvsig.tools.persistence.PersistenceManager; |
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99 | import org.gvsig.tools.persistence.PersistentState; |
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100 | import org.gvsig.tools.persistence.exception.PersistenceException; |
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101 | |||
102 | |||
103 | /**
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104 | * A minimum bounding box or rectangle. Regardless of dimension, an Envelope
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105 | * can be represented without ambiguity as two direct positions (coordinate
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106 | * points). To encode an Envelope, it is sufficient to encode these two
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107 | * points. This is consistent with all of the data types in this
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108 | * specification, their state is represented by their publicly accessible
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109 | * attributes.
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110 | |||
111 | * @author Vicente Caballero Navarro
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112 | */
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113 | public abstract class DefaultEnvelope implements Envelope, org.gvsig.tools.lang.Cloneable{ |
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114 | private static final Logger LOG = |
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115 | LoggerFactory.getLogger(DefaultEnvelope.class); |
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116 | |||
117 | public static final String PERSISTENCE_DEFINITION_NAME = "Envelope"; |
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118 | |||
119 | protected static final String LOWERCORNER_FIELD = "lowerCorner"; |
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120 | protected static final String UPPERCORNER_FIELD = "upperCorner"; |
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121 | |||
122 | protected Point min; |
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123 | protected Point max; |
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124 | |||
125 | protected boolean isEmpty; |
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126 | |||
127 | protected static GeometryManager manager = GeometryLocator.getGeometryManager(); |
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128 | |||
129 | public DefaultEnvelope(){
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130 | super();
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131 | isEmpty = true;
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132 | } |
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133 | |||
134 | public DefaultEnvelope(Point min, Point max){ |
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135 | super();
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136 | this.min = min;
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137 | this.max = max;
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138 | isEmpty = false;
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139 | } |
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140 | |||
141 | public String toString() { |
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142 | return MessageFormat.format( |
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143 | "Envelop(min={0},max={1})",
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144 | new Object[] { |
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145 | min.toString(), |
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146 | max.toString() |
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147 | } |
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148 | ); |
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149 | } |
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150 | |||
151 | /**
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152 | * Returns the center ordinate along the specified dimension.
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153 | *
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154 | * @param dimension DOCUMENT ME!
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155 | *
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156 | * @return DOCUMENT ME!
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157 | */
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158 | public double getCenter(int dimension) { |
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159 | if (isEmpty){
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160 | throw new EnvelopeNotInitializedException(); |
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161 | } |
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162 | return (min.getCoordinateAt(dimension) + max.getCoordinateAt(dimension)) * 0.5; |
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163 | } |
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164 | |||
165 | /**
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166 | * Returns the envelope length along the specified dimension.
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167 | *
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168 | * @param dimension
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169 | *
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170 | * @return
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171 | */
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172 | public double getLength(int dimension) { |
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173 | if (isEmpty){
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174 | throw new EnvelopeNotInitializedException(); |
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175 | } |
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176 | if (max.getCoordinateAt(dimension) > min.getCoordinateAt(dimension)) {
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177 | return max.getCoordinateAt(dimension) - min.getCoordinateAt(dimension);
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178 | } |
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179 | |||
180 | return min.getCoordinateAt(dimension) - max.getCoordinateAt(dimension);
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181 | } |
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182 | |||
183 | /**
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184 | * A coordinate position consisting of all the minimal ordinates for each
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185 | * dimension for all points within the Envelope.
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186 | *
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187 | * @return
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188 | */
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189 | public Point getLowerCorner() { |
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190 | return min;
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191 | } |
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192 | |||
193 | /**
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194 | * Returns the maximal ordinate along the specified dimension.
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195 | *
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196 | * @param dimension
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197 | *
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198 | * @return
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199 | */
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200 | public double getMaximum(int dimension) { |
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201 | if (isEmpty){
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202 | throw new EnvelopeNotInitializedException(); |
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203 | } |
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204 | return max.getCoordinateAt(dimension);
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205 | } |
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206 | |||
207 | /**
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208 | * Returns the minimal ordinate along the specified dimension.
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209 | *
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210 | * @param dimension
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211 | *
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212 | * @return
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213 | */
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214 | public double getMinimum(int dimension) { |
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215 | if (isEmpty){
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216 | throw new EnvelopeNotInitializedException(); |
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217 | } |
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218 | return min.getCoordinateAt(dimension);
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219 | } |
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220 | |||
221 | /**
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222 | * A coordinate position consisting of all the maximal ordinates for each
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223 | * dimension for all points within the Envelope.
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224 | *
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225 | * @return
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226 | */
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227 | public Point getUpperCorner() { |
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228 | return max;
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229 | } |
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230 | |||
231 | public void add(Envelope envelope) { |
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232 | if (isEmpty){
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233 | setLowerCorner((Point)envelope.getLowerCorner().cloneGeometry());
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234 | setUpperCorner((Point)envelope.getUpperCorner().cloneGeometry());
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235 | }else{
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236 | int maxDimension = Math.min(getDimension(), envelope.getDimension()); |
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237 | int i;
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238 | for (i=0;i<maxDimension;i++){ |
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239 | this.min.setCoordinateAt(i,
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240 | Math.min(this.min.getCoordinateAt(i), envelope.getMinimum(i))); |
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241 | this.max.setCoordinateAt(i,
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242 | Math.max(this.max.getCoordinateAt(i), envelope.getMaximum(i))); |
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243 | } |
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244 | } |
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245 | } |
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246 | |||
247 | public Geometry getGeometry() {
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248 | if (isEmpty){
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249 | throw new EnvelopeNotInitializedException(); |
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250 | } |
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251 | try {
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252 | Surface surface = (Surface)manager.create(TYPES.SURFACE, SUBTYPES.GEOM2D); |
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253 | surface.addMoveToVertex((Point)min.cloneGeometry());
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254 | surface.addVertex(manager.createPoint(getMaximum(0),getMinimum(1), SUBTYPES.GEOM2D)); |
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255 | surface.addVertex((Point)max.cloneGeometry());
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256 | surface.addVertex(manager.createPoint(getMinimum(0),getMaximum(1), SUBTYPES.GEOM2D)); |
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257 | surface.closePrimitive(); |
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258 | return surface;
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259 | } catch (CreateGeometryException e) {
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260 | LOG.error("Error creting the surface", e);
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261 | } |
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262 | return null; |
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263 | } |
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264 | |||
265 | public boolean contains(Envelope envelope) { |
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266 | if (isEmpty){
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267 | return false; |
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268 | } |
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269 | if((envelope == null) || (envelope.isEmpty())) { |
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270 | return false; |
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271 | } |
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272 | for (int i = 0; i < getDimension(); i++) { |
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273 | if (getMinimum(i) > envelope.getMinimum(i)
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274 | || getMaximum(i) < envelope.getMaximum(i)) { |
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275 | return false; |
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276 | } |
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277 | } |
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278 | return true; |
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279 | } |
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280 | |||
281 | public boolean intersects(Envelope envelope) { |
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282 | if (isEmpty){
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283 | return false; |
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284 | } |
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285 | if((envelope == null) || (envelope.isEmpty())) { |
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286 | return false; |
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287 | } |
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288 | int dimension = getDimension();
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289 | for (int i = 0; i < dimension; i++) { |
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290 | if (getMinimum(i)>envelope.getMaximum(i)){
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291 | return false; |
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292 | } else if (getMaximum(i)<envelope.getMinimum(i)){ |
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293 | return false; |
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294 | } |
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295 | } |
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296 | return true; |
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297 | } |
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298 | |||
299 | public boolean equals(Object other) { |
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300 | if (!(other == null || other instanceof Envelope)) { |
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301 | return false; |
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302 | } |
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303 | Envelope otherEnv = (Envelope) other; |
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304 | if (isEmpty && otherEnv.isEmpty()){
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305 | return true; |
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306 | } |
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307 | if (otherEnv.getDimension() != this.getDimension()) { |
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308 | return false; |
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309 | } |
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310 | for (int i = 0; i < this.getDimension(); i++) { |
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311 | if (otherEnv.getMinimum(i) != this.getMinimum(i)) { |
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312 | return false; |
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313 | } |
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314 | if (otherEnv.getMaximum(i) != this.getMaximum(i)) { |
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315 | return false; |
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316 | } |
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317 | } |
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318 | return true; |
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319 | } |
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320 | |||
321 | /* (non-Javadoc)
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322 | * @see org.gvsig.fmap.geom.primitive.Envelope#setLowerCorner(org.gvsig.fmap.geom.primitive.Point)
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323 | */
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324 | public void setLowerCorner(Point lowerCorner) { |
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325 | this.min = lowerCorner;
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326 | if (max != null){ |
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327 | isEmpty = false;
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328 | } |
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329 | } |
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330 | |||
331 | /* (non-Javadoc)
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332 | * @see org.gvsig.fmap.geom.primitive.Envelope#setUpperCorner(org.gvsig.fmap.geom.primitive.Point)
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333 | */
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334 | public void setUpperCorner(Point upperCorner) { |
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335 | this.max = upperCorner;
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336 | if (min != null){ |
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337 | isEmpty = false;
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338 | } |
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339 | } |
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340 | |||
341 | public static void registerPersistent() { |
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342 | PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
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343 | if( manager.getDefinition(PERSISTENCE_DEFINITION_NAME)==null ) { |
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344 | DynStruct definition = manager.addDefinition( |
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345 | DefaultEnvelope.class, |
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346 | PERSISTENCE_DEFINITION_NAME, |
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347 | "DefaultEnvelope persistence definition",
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348 | null,
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349 | null
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350 | ); |
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351 | |||
352 | definition.addDynFieldObject(LOWERCORNER_FIELD).setClassOfValue(Point.class).setMandatory(true); |
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353 | definition.addDynFieldObject(UPPERCORNER_FIELD).setClassOfValue(Point.class).setMandatory(true); |
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354 | } |
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355 | } |
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356 | |||
357 | public void loadFromState(PersistentState state) |
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358 | throws PersistenceException {
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359 | setLowerCorner((Point)state.get(LOWERCORNER_FIELD));
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360 | setUpperCorner((Point)state.get(UPPERCORNER_FIELD));
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361 | } |
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362 | |||
363 | public void saveToState(PersistentState state) throws PersistenceException { |
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364 | state.set(LOWERCORNER_FIELD, min); |
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365 | state.set(UPPERCORNER_FIELD, max); |
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366 | } |
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367 | |||
368 | public Object clone() throws CloneNotSupportedException { |
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369 | DefaultEnvelope other = (DefaultEnvelope) super.clone();
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370 | if (!isEmpty){
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371 | other.max = (Point) max.cloneGeometry();
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372 | other.min = (Point) min.cloneGeometry();
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373 | } |
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374 | return other;
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375 | } |
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376 | |||
377 | public boolean isEmpty() { |
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378 | return isEmpty;
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379 | } |
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380 | } |