svn-gvsig-desktop / tags / v1_1_Build_1003 / libraries / libFMap / src / com / iver / cit / gvsig / fmap / drivers / shp / write / SHPPolygon.java @ 12271
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1 | 1132 | vcaballero | /* 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 com.iver.cit.gvsig.fmap.drivers.shp.write; |
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42 | |||
43 | import com.iver.cit.gvsig.fmap.core.FPoint2D; |
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44 | import com.iver.cit.gvsig.fmap.core.FPolygon2D; |
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45 | import com.iver.cit.gvsig.fmap.core.IGeometry; |
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46 | import com.iver.cit.gvsig.fmap.core.v02.FConstant; |
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47 | 2196 | vcaballero | import com.iver.cit.gvsig.fmap.drivers.shp.SHP; |
48 | 1132 | vcaballero | |
49 | import java.awt.geom.Rectangle2D; |
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50 | |||
51 | import java.nio.ByteBuffer; |
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52 | import java.nio.MappedByteBuffer; |
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53 | |||
54 | |||
55 | /**
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56 | 1154 | vcaballero | * Elemento shape de tipo Pol?gono.
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57 | 1132 | vcaballero | *
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58 | * @author Vicente Caballero Navarro
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59 | */
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60 | public class SHPPolygon extends SHPMultiLine { |
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61 | |||
62 | /**
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63 | * Crea un nuevo SHPPolygon.
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64 | */
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65 | public SHPPolygon() {
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66 | m_type = FConstant.SHAPE_TYPE_POLYGON; |
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67 | } |
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68 | |||
69 | /**
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70 | * Crea un nuevo SHPPolygon.
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71 | *
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72 | 1154 | vcaballero | * @param type Tipo de shape.
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73 | 1132 | vcaballero | *
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74 | 6475 | caballero | * @throws ShapefileException
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75 | 1132 | vcaballero | */
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76 | public SHPPolygon(int type) throws ShapefileException { |
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77 | if ((type != FConstant.SHAPE_TYPE_POLYGON) &&
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78 | (type != FConstant.SHAPE_TYPE_POLYGONM) && |
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79 | (type != FConstant.SHAPE_TYPE_POLYGONZ)) { |
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80 | throw new ShapefileException("No es de tipo 5, 15, o 25"); |
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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 | 1154 | vcaballero | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#getShapeType()
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88 | 1132 | vcaballero | */
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89 | public int getShapeType() { |
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90 | return m_type;
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91 | } |
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92 | |||
93 | /**
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94 | 1154 | vcaballero | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#read(MappedByteBuffer, int)
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95 | 1132 | vcaballero | */
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96 | 6475 | caballero | public synchronized IGeometry read(MappedByteBuffer buffer, int type) { |
97 | 1132 | vcaballero | double minX = buffer.getDouble();
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98 | double minY = buffer.getDouble();
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99 | double maxX = buffer.getDouble();
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100 | double maxY = buffer.getDouble();
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101 | Rectangle2D rec = new Rectangle2D.Double(minX, minY, maxX - minX, |
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102 | maxY - maxY); |
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103 | int numParts = buffer.getInt();
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104 | int numPoints = buffer.getInt();
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105 | |||
106 | int[] partOffsets = new int[numParts]; |
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107 | |||
108 | for (int i = 0; i < numParts; i++) { |
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109 | partOffsets[i] = buffer.getInt(); |
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110 | } |
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111 | |||
112 | FPoint2D[] points = readPoints(buffer, numPoints);
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113 | |||
114 | /* if (m_type == FConstant.SHAPE_TYPE_POLYGONZ) {
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115 | //z
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116 | buffer.position(buffer.position() + (2 * 8));
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117 | for (int t = 0; t < numPoints; t++) {
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118 | points[t].z = buffer.getDouble();
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119 | }
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120 | }
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121 | */
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122 | int offset = 0; |
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123 | int start;
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124 | int finish;
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125 | int length;
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126 | |||
127 | for (int part = 0; part < numParts; part++) { |
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128 | start = partOffsets[part]; |
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129 | |||
130 | if (part == (numParts - 1)) { |
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131 | finish = numPoints; |
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132 | } else {
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133 | finish = partOffsets[part + 1];
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134 | } |
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135 | |||
136 | length = finish - start; |
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137 | |||
138 | FPoint2D[] pointsPart = new FPoint2D[length]; |
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139 | |||
140 | for (int i = 0; i < length; i++) { |
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141 | pointsPart[i] = points[offset++]; |
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142 | } |
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143 | } |
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144 | |||
145 | return (IGeometry) new FPolygon2D(getGeneralPathX(points, partOffsets)); |
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146 | } |
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147 | |||
148 | /**
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149 | 1154 | vcaballero | * Lee los puntos del buffer.
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150 | 1132 | vcaballero | *
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151 | 6475 | caballero | * @param buffer
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152 | 1154 | vcaballero | * @param numPoints N?mero de puntos.
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153 | 1132 | vcaballero | *
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154 | 1154 | vcaballero | * @return Vector de Puntos.
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155 | 1132 | vcaballero | */
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156 | 6475 | caballero | private synchronized FPoint2D[] readPoints(final MappedByteBuffer buffer, |
157 | 1132 | vcaballero | final int numPoints) { |
158 | FPoint2D[] points = new FPoint2D[numPoints]; |
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159 | |||
160 | for (int t = 0; t < numPoints; t++) { |
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161 | points[t] = new FPoint2D(buffer.getDouble(), buffer.getDouble());
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162 | } |
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163 | |||
164 | return points;
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165 | } |
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166 | |||
167 | /**
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168 | 1154 | vcaballero | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#write(ByteBuffer, IGeometry)
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169 | 1132 | vcaballero | */
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170 | 6475 | caballero | public synchronized void write(ByteBuffer buffer, IGeometry geometry) { |
171 | 1132 | vcaballero | //FPolygon2D polyLine;
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172 | //polyLine = (FPolygon2D) geometry.getShape();
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173 | Rectangle2D rec = geometry.getBounds2D();
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174 | buffer.putDouble(rec.getMinX()); |
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175 | buffer.putDouble(rec.getMinY()); |
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176 | buffer.putDouble(rec.getMaxX()); |
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177 | buffer.putDouble(rec.getMaxY()); |
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178 | |||
179 | //////
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180 | 1137 | vcaballero | ///obtainsPoints(geometry.getGeneralPathXIterator());
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181 | 1132 | vcaballero | |
182 | //int[] parts=polyLine.getParts();
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183 | //FPoint2D[] points=polyLine.getPoints();
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184 | int nparts = parts.length;
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185 | int npoints = points.length;
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186 | |||
187 | //////
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188 | ///int npoints = polyLine.getNumPoints();
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189 | ///int nparts = polyLine.getNumParts();
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190 | buffer.putInt(nparts); |
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191 | buffer.putInt(npoints); |
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192 | |||
193 | int count = 0; |
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194 | |||
195 | for (int t = 0; t < nparts; t++) { |
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196 | ///buffer.putInt(polyLine.getPart(t));
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197 | buffer.putInt(parts[t]); |
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198 | } |
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199 | |||
200 | ///FPoint[] points = polyLine.getPoints();
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201 | for (int t = 0; t < points.length; t++) { |
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202 | ///buffer.putDouble(points[t].x);
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203 | ///buffer.putDouble(points[t].y);
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204 | buffer.putDouble(points[t].getX()); |
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205 | buffer.putDouble(points[t].getY()); |
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206 | } |
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207 | |||
208 | 2196 | vcaballero | if (m_type == FConstant.SHAPE_TYPE_POLYGONZ) {
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209 | double[] zExtreame = SHP.getZMinMax(zs); |
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210 | 1132 | vcaballero | if (Double.isNaN(zExtreame[0])) { |
211 | buffer.putDouble(0.0);
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212 | buffer.putDouble(0.0);
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213 | } else {
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214 | buffer.putDouble(zExtreame[0]);
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215 | buffer.putDouble(zExtreame[1]);
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216 | } |
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217 | for (int t = 0; t < npoints; t++) { |
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218 | 2196 | vcaballero | double z = zs[t];
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219 | 1132 | vcaballero | if (Double.isNaN(z)) { |
220 | buffer.putDouble(0.0);
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221 | } else {
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222 | buffer.putDouble(z); |
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223 | } |
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224 | } |
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225 | } |
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226 | 6475 | caballero | |
227 | 1132 | vcaballero | if ((m_type == FConstant.SHAPE_TYPE_POLYGONM) ||
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228 | (m_type == FConstant.SHAPE_TYPE_POLYGONZ)) { |
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229 | buffer.putDouble(-10E40);
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230 | buffer.putDouble(-10E40);
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231 | |||
232 | for (int t = 0; t < npoints; t++) { |
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233 | buffer.putDouble(-10E40);
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234 | } |
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235 | } |
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236 | } |
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237 | |||
238 | /**
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239 | * @see com.iver.cit.gvsig.fmap.shp.SHPShape#getLength(com.iver.cit.gvsig.core.BasicShape.FGeometry)
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240 | */
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241 | 6475 | caballero | public synchronized int getLength(IGeometry fgeometry) { |
242 | 1132 | vcaballero | // FPolygon2D multi;
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243 | //multi = (FPolygon2D) fgeometry.getShape();
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244 | ///int nrings = 0;
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245 | 1137 | vcaballero | ///obtainsPoints(fgeometry.getGeneralPathXIterator());
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246 | 1132 | vcaballero | |
247 | //int[] parts=multi.getParts();
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248 | //FPoint2D[] points;
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249 | /////////
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250 | //points = multi.getPoints();
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251 | int npoints = points.length;
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252 | |||
253 | ///////////
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254 | ///nrings = multi.getNumParts();
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255 | ///int npoints = multi.getNumPoints();
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256 | int length;
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257 | |||
258 | if (m_type == FConstant.SHAPE_TYPE_POLYGONZ) {
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259 | length = 44 + (4 * parts.length) + (16 * npoints) + (8 * npoints) + |
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260 | 16 + (8 * npoints) + 16; |
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261 | } else if (m_type == FConstant.SHAPE_TYPE_POLYGONM) { |
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262 | length = 44 + (4 * parts.length) + (16 * npoints) + (8 * npoints) + |
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263 | 16;
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264 | } else if (m_type == FConstant.SHAPE_TYPE_POLYGON) { |
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265 | length = 44 + (4 * parts.length) + (16 * npoints); |
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266 | } else {
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267 | throw new IllegalStateException( |
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268 | "Expected ShapeType of Polygon, got " + m_type);
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269 | } |
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270 | |||
271 | return length;
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272 | } |
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273 | } |