svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.file / org.gvsig.fmap.dal.file.shp / src / main / java / org / gvsig / fmap / dal / store / shp / utils / SHPPoint.java @ 40435
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1 | 40435 | jjdelcerro | /* gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | *
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19 | * For more information, contact:
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20 | *
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21 | * Generalitat Valenciana
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22 | * Conselleria d'Infraestructures i Transport
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23 | * Av. Blasco Ib��ez, 50
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24 | * 46010 VALENCIA
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25 | * SPAIN
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26 | *
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27 | * +34 963862235
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28 | * gvsig@gva.es
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29 | * www.gvsig.gva.es
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30 | *
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31 | * or
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32 | *
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33 | * IVER T.I. S.A
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34 | * Salamanca 50
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35 | * 46005 Valencia
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36 | * Spain
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37 | *
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38 | * +34 963163400
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39 | * dac@iver.es
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40 | */
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41 | package org.gvsig.fmap.dal.store.shp.utils; |
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42 | |||
43 | import java.awt.geom.PathIterator; |
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44 | import java.nio.ByteBuffer; |
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45 | import java.nio.MappedByteBuffer; |
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46 | |||
47 | import org.gvsig.fmap.geom.Geometry; |
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48 | import org.gvsig.fmap.geom.GeometryLocator; |
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49 | import org.gvsig.fmap.geom.GeometryManager; |
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50 | import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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51 | import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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52 | import org.gvsig.fmap.geom.primitive.Point; |
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53 | import org.slf4j.Logger; |
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54 | import org.slf4j.LoggerFactory; |
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55 | |||
56 | |||
57 | /**
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58 | * DOCUMENT ME!
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59 | *
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60 | * @author Vicente Caballero Navarro
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61 | */
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62 | public class SHPPoint implements SHPShape { |
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63 | private static final GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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64 | private static final Logger logger = LoggerFactory.getLogger(SHPPoint.class); |
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65 | private int m_type; |
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66 | private Point point; |
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67 | private double z; |
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68 | |||
69 | /**
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70 | * Crea un nuevo SHPPoint.
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71 | *
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72 | * @param type DOCUMENT ME!
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73 | *
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74 | * @throws ShapefileException DOCUMENT ME!
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75 | */
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76 | public SHPPoint(int type) { |
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77 | if ((type != SHP.POINT2D) &&
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78 | (type != SHP.POINTM) && |
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79 | (type != SHP.POINT3D)) { // 2d, 2d+m, 3d+m
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80 | // throw new ShapefileException("No es un punto 1,11 ni 21");
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81 | } |
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82 | |||
83 | m_type = type; |
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84 | } |
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85 | |||
86 | /**
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87 | * Crea un nuevo SHPPoint.
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88 | */
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89 | public SHPPoint() {
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90 | m_type = SHP.POINT2D; //2d
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91 | } |
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92 | |||
93 | /**
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94 | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#getShapeType()
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95 | */
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96 | public int getShapeType() { |
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97 | return m_type;
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98 | } |
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99 | |||
100 | /**
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101 | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#read(MappedByteBuffer, int)
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102 | */
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103 | public Geometry read(MappedByteBuffer buffer, int type) { |
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104 | double x = buffer.getDouble();
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105 | double y = buffer.getDouble();
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106 | double z = Double.NaN; |
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107 | |||
108 | if (m_type == SHP.POINTM) {
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109 | buffer.getDouble(); |
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110 | } |
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111 | |||
112 | if (m_type == SHP.POINT3D) {
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113 | z = buffer.getDouble(); |
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114 | Point point;
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115 | try {
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116 | point = geomManager.createPoint(x, y, SUBTYPES.GEOM3D); |
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117 | point.setCoordinateAt(2, z);
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118 | return point;
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119 | //FIXME que hacems con esto
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120 | } catch (CreateGeometryException e) {
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121 | logger.error("Error creating a point", e);
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122 | } |
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123 | } |
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124 | try {
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125 | return geomManager.createPoint(x, y, SUBTYPES.GEOM2D);
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126 | } catch (CreateGeometryException e) {
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127 | logger.error("Error creating a point", e);
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128 | } |
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129 | return null; |
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130 | } |
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131 | |||
132 | /**
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133 | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#write(ByteBuffer, IGeometry)
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134 | */
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135 | public void write(ByteBuffer buffer, Geometry geometry) { |
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136 | buffer.putDouble(point.getX()); |
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137 | buffer.putDouble(point.getY()); |
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138 | |||
139 | if ((m_type == SHP.POINT3D) || (m_type == SHP.POINTM)){
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140 | if (Double.isNaN(z)) { // nan means not defined |
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141 | buffer.putDouble(0.0);
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142 | } else {
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143 | buffer.putDouble(z); |
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144 | } |
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145 | } |
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146 | } |
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147 | |||
148 | /**
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149 | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#getLength(int)
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150 | */
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151 | public int getLength(Geometry fgeometry) { |
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152 | int length;
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153 | |||
154 | if (m_type == SHP.POINT2D) {
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155 | length = 20;
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156 | } else if (m_type == SHP.POINTM || m_type == SHP.POINT3D) { |
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157 | length = 28;
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158 | } else {
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159 | throw new IllegalStateException("Expected ShapeType of Point, got" + |
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160 | m_type); |
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161 | } |
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162 | |||
163 | return length;
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164 | } |
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165 | |||
166 | /**
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167 | * @see com.iver.cit.gvsig.fmap.drivers.shp.write.SHPShape#obtainsPoints(com.iver.cit.gvsig.fmap.core.GeneralPathXIterator)
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168 | */
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169 | public void obtainsPoints(Geometry g) { |
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170 | if (m_type == SHP.POINTM || m_type == SHP.POINT3D){
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171 | z = ((Point)g).getCoordinateAt(2); |
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172 | } |
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173 | PathIterator theIterator = g.getPathIterator(null); //polyLine.getPathIterator(null, flatness); |
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174 | double[] theData = new double[6]; |
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175 | |||
176 | while (!theIterator.isDone()) {
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177 | //while not done
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178 | // int theType = theIterator.currentSegment(theData);
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179 | theIterator.currentSegment(theData); |
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180 | |||
181 | try {
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182 | point = geomManager.createPoint(theData[0], theData[1], SUBTYPES.GEOM2D); |
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183 | } catch (CreateGeometryException e) {
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184 | logger.error("Error creating a point", e);
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185 | } |
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186 | |||
187 | theIterator.next(); |
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188 | } //end while loop
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189 | } |
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190 | // public void setFlatness(double flatness) {
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191 | // // this.flatness=flatness;
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192 | // }
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193 | } |