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 / SHPMultiPoint.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.awt.geom.Point2D; |
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45 | import java.awt.geom.Rectangle2D; |
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46 | import java.nio.ByteBuffer; |
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47 | import java.nio.MappedByteBuffer; |
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48 | import java.util.ArrayList; |
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49 | |||
50 | import org.gvsig.fmap.geom.Geometry; |
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51 | import org.gvsig.fmap.geom.GeometryLocator; |
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52 | import org.gvsig.fmap.geom.GeometryManager; |
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53 | import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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54 | import org.gvsig.fmap.geom.Geometry.TYPES; |
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55 | import org.gvsig.fmap.geom.aggregate.MultiPoint; |
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56 | import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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57 | import org.gvsig.fmap.geom.primitive.Envelope; |
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58 | import org.slf4j.Logger; |
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59 | import org.slf4j.LoggerFactory; |
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60 | |||
61 | /**
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62 | * Elemento shape de tipo multipunto.
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63 | *
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64 | * @author Vicente Caballero Navarro
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65 | */
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66 | public class SHPMultiPoint implements SHPShape { |
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67 | private static final GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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68 | private static final Logger logger = LoggerFactory.getLogger(SHPMultiPoint.class); |
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69 | private int m_type; |
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70 | private int numpoints; |
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71 | private Point2D[] points; |
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72 | private double[] zs; |
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73 | |||
74 | /**
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75 | * Crea un nuevo SHPMultiPoint.
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76 | */
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77 | public SHPMultiPoint() {
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78 | m_type = SHP.MULTIPOINT2D; |
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79 | } |
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80 | |||
81 | /**
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82 | * Crea un nuevo SHPMultiPoint.
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83 | *
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84 | * @param type Tipo de multipunto.
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85 | *
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86 | * @throws ShapefileException
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87 | */
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88 | public SHPMultiPoint(int type) { |
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89 | if ((type != SHP.MULTIPOINT2D) &&
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90 | (type != SHP.MULTIPOINTM) && |
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91 | (type != SHP.MULTIPOINT3D)) { |
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92 | // throw new ShapefileException("No es de tipo 8, 18, o 28");
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93 | } |
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94 | |||
95 | m_type = type; |
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96 | } |
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97 | |||
98 | /**
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99 | * Devuelve el tipo de multipoint en concreto.
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100 | *
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101 | * @return Tipo de multipoint.
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102 | */
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103 | public int getShapeType() { |
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104 | return m_type;
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105 | } |
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106 | |||
107 | /**
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108 | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#read(MappedByteBuffer, int)
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109 | */
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110 | public Geometry read(MappedByteBuffer buffer, int type) { |
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111 | double minX = buffer.getDouble();
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112 | double minY = buffer.getDouble();
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113 | double maxX = buffer.getDouble();
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114 | double maxY = buffer.getDouble();
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115 | Rectangle2D rec = new Rectangle2D.Double(minX, minY, maxX - minX, |
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116 | maxY - maxY); |
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117 | int numpoints = buffer.getInt();
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118 | org.gvsig.fmap.geom.primitive.Point[] p = new org.gvsig.fmap.geom.primitive.Point[numpoints]; |
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119 | |||
120 | for (int t = 0; t < numpoints; t++) { |
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121 | double x = buffer.getDouble();
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122 | double y = buffer.getDouble();
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123 | try {
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124 | p[t] = geomManager.createPoint(x, y, SUBTYPES.GEOM2D); |
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125 | } catch (CreateGeometryException e) {
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126 | logger.error("Error creating a point", e);
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127 | } |
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128 | } |
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129 | |||
130 | /* if (m_type == FConstant.SHAPE_TYPE_MULTIPOINTZ) {
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131 | buffer.position(buffer.position() + (2 * 8));
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132 | for (int t = 0; t < numpoints; t++) {
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133 | p[t].z = buffer.getDouble(); //z
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134 | }
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135 | }
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136 | */
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137 | MultiPoint multipoint = null;
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138 | try {
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139 | multipoint = (MultiPoint)geomManager.create(TYPES.MULTIPOINT, SUBTYPES.GEOM2D); |
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140 | for (int i=0 ; i<p.length ; i++){ |
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141 | multipoint.addPoint(p[i]); |
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142 | } |
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143 | } catch (CreateGeometryException e) {
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144 | logger.error("Error creating the multipoint", e);
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145 | } |
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146 | return multipoint;
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147 | } |
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148 | |||
149 | /**
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150 | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#write(ByteBuffer, IGeometry)
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151 | */
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152 | public void write(ByteBuffer buffer, Geometry geometry) { |
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153 | // FMultiPoint2D mp = (FMultiPoint2D) geometry.getShape();
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154 | // int p = buffer.position();
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155 | |||
156 | Envelope env = geometry.getEnvelope(); |
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157 | |||
158 | buffer.putDouble(env.getMinimum(0));
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159 | buffer.putDouble(env.getMinimum(1));
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160 | buffer.putDouble(env.getMaximum(0));
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161 | buffer.putDouble(env.getMaximum(1));
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162 | ///obtainsPoints(geometry.getGeneralPathXIterator());
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163 | buffer.putInt(numpoints); |
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164 | |||
165 | for (int t = 0, tt = numpoints; t < tt; t++) { |
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166 | Point2D point = points[t];
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167 | buffer.putDouble(point.getX()); |
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168 | buffer.putDouble(point.getY()); |
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169 | } |
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170 | |||
171 | if (m_type == SHP.MULTIPOINT3D) {
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172 | double[] zExtreame = SHP.getZMinMax(zs); |
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173 | if (Double.isNaN(zExtreame[0])) { |
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174 | buffer.putDouble(0.0);
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175 | buffer.putDouble(0.0);
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176 | } else {
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177 | buffer.putDouble(zExtreame[0]);
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178 | buffer.putDouble(zExtreame[1]);
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179 | } |
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180 | for (int t = 0; t < numpoints; t++) { |
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181 | double z = zs[t];
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182 | if (Double.isNaN(z)) { |
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183 | buffer.putDouble(0.0);
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184 | } else {
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185 | buffer.putDouble(z); |
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186 | } |
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187 | } |
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188 | } |
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189 | if ((m_type == SHP.MULTIPOINTM) ||
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190 | (m_type == SHP.MULTIPOINT3D)) { |
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191 | buffer.putDouble(-10E40);
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192 | buffer.putDouble(-10E40);
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193 | for (int t = 0; t < numpoints; t++) { |
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194 | buffer.putDouble(-10E40);
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195 | } |
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196 | } |
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197 | |||
198 | } |
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199 | |||
200 | /**
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201 | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#getLength(com.iver.cit.gvsig.core.BasicShape.FGeometry)
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202 | */
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203 | public int getLength(Geometry fgeometry) { |
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204 | //FMultiPoint2D mp = (FMultiPoint2D) fgeometry.getShape();
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205 | ///obtainsPoints(fgeometry.getGeneralPathXIterator());
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206 | |||
207 | int length;
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208 | |||
209 | if (m_type == SHP.MULTIPOINT2D) {
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210 | // two doubles per coord (16 * numgeoms) + 40 for header
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211 | length = (numpoints * 16) + 40; |
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212 | } else if (m_type == SHP.MULTIPOINTM) { |
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213 | // add the additional MMin, MMax for 16, then 8 per measure
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214 | length = (numpoints * 16) + 40 + 16 + (8 * numpoints); |
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215 | } else if (m_type == SHP.MULTIPOINT3D) { |
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216 | // add the additional ZMin,ZMax, plus 8 per Z
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217 | length = (numpoints * 16) + 40 + 16 + (8 * numpoints); |
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218 | } else {
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219 | throw new IllegalStateException("Expected ShapeType of Arc, got " + |
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220 | m_type); |
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221 | } |
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222 | |||
223 | return length;
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224 | } |
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225 | |||
226 | /**
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227 | * @see com.iver.cit.gvsig.fmap.drivers.shp.write.SHPShape#obtainsPoints(com.iver.cit.gvsig.fmap.core.GeneralPathXIterator)
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228 | */
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229 | public void obtainsPoints(Geometry g) { |
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230 | if (SHP.MULTIPOINT3D == m_type){
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231 | MultiPoint multipoint = (MultiPoint)g; |
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232 | zs = new double[multipoint.getPrimitivesNumber()]; |
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233 | for (int i=0 ; i<zs.length ; i++){ |
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234 | zs[i] = multipoint.getPointAt(i).getCoordinateAt(2);
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235 | } |
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236 | } |
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237 | PathIterator theIterator = g.getPathIterator(null); //polyLine.getPathIterator(null, flatness); |
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238 | double[] theData = new double[6]; |
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239 | ArrayList ps=new ArrayList(); |
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240 | while (!theIterator.isDone()) {
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241 | //while not done
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242 | // int theType = theIterator.currentSegment(theData);
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243 | theIterator.currentSegment(theData); |
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244 | |||
245 | ps.add(new Point2D.Double(theData[0], theData[1])); |
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246 | theIterator.next(); |
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247 | } //end while loop
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248 | points=(Point2D[])ps.toArray(new Point2D.Double[0]); |
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249 | numpoints=points.length; |
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250 | } |
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251 | // public void setFlatness(double flatness) {
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252 | // //this.flatness=flatness;
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253 | // }
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254 | } |