Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/WKTUtils.java @ 482:64e65daa65e9

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Fixed some bugs with calculating "Horizontalschnitte". gnv-artifacts/trunk@557 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 17 Jan 2010 21:26:21 +0000
parents 211cad2fb5ba
children 45be952a3215
rev   line source
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1 package de.intevation.gnv.utils;
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2
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3 import com.vividsolutions.jts.geom.Coordinate;
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4 import com.vividsolutions.jts.geom.Point;
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5 import com.vividsolutions.jts.geom.Polygon;
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6 import com.vividsolutions.jts.geom.LineString;
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7 import com.vividsolutions.jts.io.ParseException;
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8
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9 import com.vividsolutions.jts.io.WKTReader;
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10
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11 import de.intevation.gnv.geobackend.base.Result;
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12 import de.intevation.gnv.geobackend.base.query.QueryExecutor;
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13 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory;
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14 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
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15
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16 import de.intevation.gnv.math.LinearFunction;
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17
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18 import java.util.ArrayList;
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19 import java.util.Collection;
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20 import java.util.List;
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21
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22 import org.apache.commons.math.optimization.OptimizationException;
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23 import org.apache.commons.math.optimization.fitting.CurveFitter;
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24 import org.apache.commons.math.optimization.general.GaussNewtonOptimizer;
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25 import org.apache.commons.math.FunctionEvaluationException;
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26
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27 import org.apache.log4j.Logger;
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28
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29 public abstract class WKTUtils {
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30
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31 private static Logger log = Logger.getLogger(WKTUtils.class);
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32
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33 public static final double NAUTICAL_MILE = 1852.216d;
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34 public static final double KILOMETER = 1000d;
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35
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36 public static final String I_NAME = "MEDIAN.MESHPOINT.IPOSITION";
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37 public static final String J_NAME = "MEDIAN.MESHPOINT.JPOSITION";
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38
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39 public static final String TRUE_EXPRESSION = "FEATUREID=FEATUREID";
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40
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41 public static boolean different(Result a, Result b, int [] indices) {
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42 for (int i = 0; i < indices.length; ++i) {
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43 String oa = a.getString(indices[i]);
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44 String ob = b.getString(indices[i]);
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45
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46 if (oa == null && ob == null) {
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47 continue;
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48 }
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49
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50 if (oa == null || ob == null) {
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51 return true;
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52 }
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53
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54 if (!oa.equals(ob)) {
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55 return true;
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56 }
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57 }
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58 return false;
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59 }
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60
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61 public static Coordinate toCoordinate(String shape) {
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62 try {
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63 return shape != null
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64 ? ((Point)(new WKTReader().read(shape))).getCoordinate()
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65 : null;
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66 }
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67 catch (ParseException pe) {
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68 log.error(pe);
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69 }
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70 catch (ClassCastException cce) {
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71 log.error("cannot read WKT point", cce);
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72 }
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73 return null;
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74 }
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75
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76 public static Polygon toPolygon(String shape) {
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77 try {
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78 return (Polygon)new WKTReader().read(shape);
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79 }
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80 catch (ParseException pe) {
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81 log.error(pe);
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82 }
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83 catch (ClassCastException cce) {
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84 log.error("cannot read WKT polygon", cce);
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85 }
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86 return null;
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87 }
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88
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89 public static final double toKM(double distance) {
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90 return (distance * NAUTICAL_MILE) / KILOMETER;
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91 }
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92
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93
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94 public static String toWKT(Coordinate coordinate) {
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95 StringBuilder sb = new StringBuilder("POINT(");
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96 sb.append(coordinate.x)
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97 .append(' ')
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98 .append(coordinate.y)
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99 .append(')');
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100 return sb.toString();
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101 }
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102
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103 public static final String indexBox(
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104 java.awt.Point a,
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105 java.awt.Point b,
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106 String iName,
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107 String jName
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108 ) {
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109 int minI = Math.min(a.x, b.x) - 1;
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110 int maxI = Math.max(a.x, b.x) + 1;
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111 int minJ = Math.min(a.y, b.y) - 1;
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112 int maxJ = Math.max(a.y, b.y) + 1;
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113 StringBuilder sb = new StringBuilder("(")
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114 .append(iName).append(" >= ").append(minI)
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115 .append(" AND ").append(iName).append(" <= ").append(maxI)
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116 .append(" AND ").append(jName).append(" >= ").append(minJ)
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117 .append(" AND ").append(jName).append(" <= ").append(maxJ)
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118 .append(')');
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119 return sb.toString();
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120 }
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121
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122 public static final String diagonalBox(List<java.awt.Point> points) {
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123
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124 if (points.get(0) != null && points.get(2) != null) {
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125 return indexBox(
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126 points.get(0), points.get(2),
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127 I_NAME,
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128 J_NAME);
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129 }
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diff changeset
130
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131 if (points.get(1) != null && points.get(3) != null) {
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132 return indexBox(
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diff changeset
133 points.get(1), points.get(3),
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diff changeset
134 I_NAME,
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diff changeset
135 J_NAME);
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136 }
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137
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138 return null;
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139 }
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140
468
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141 public static String worldEnvelopeCoordinatesToIndex(
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142 Coordinate [] coords,
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diff changeset
143 String meshid,
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parents: 440
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144 String ijkQueryID
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diff changeset
145 )
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diff changeset
146 throws QueryException
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diff changeset
147 {
471
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diff changeset
148 List<java.awt.Point> points =
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149 new ArrayList<java.awt.Point>(coords.length);
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150
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diff changeset
151 ArrayList<Object []> missingPoints =
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152 new ArrayList<Object []>();
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153
468
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154 createIJKPoints(coords, meshid, ijkQueryID, points, missingPoints);
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155
471
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156 String additionWhere = null;
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157
468
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158 if (missingPoints.size() == coords.length) {
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159 log.debug("cannot create index buffer");
471
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160 }
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161 else {
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162 additionWhere = diagonalBox(points);
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163
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164 if (additionWhere == null) {
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165 // 3 Points are missing or are on one side of the envelope
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166 boolean remainsMissingPoints = calculateIJ4MissingPoints(
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167 coords, points, missingPoints);
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168
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169 if (!remainsMissingPoints) {
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170 additionWhere = diagonalBox(points);
468
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171 }
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172 }
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173 }
471
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174
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175 return additionWhere != null
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176 ? additionWhere
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177 : TRUE_EXPRESSION;
468
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178 }
471
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179
423
2402173a1490 Moved some methods back to old place.
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180 public static String worldCoordinatesToIndex(
440
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parents: 423
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181 Coordinate [] coords,
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parents: 423
diff changeset
182 Collection<Result> result,
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parents: 423
diff changeset
183 String meshid,
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parents: 423
diff changeset
184 String ijkQueryID
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parents: 423
diff changeset
185 )
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parents: 423
diff changeset
186 throws QueryException
420
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parents:
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187 {
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188 List<java.awt.Point> points = new ArrayList<java.awt.Point>(coords.length);
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parents:
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189
468
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190 ArrayList<Object []> missingPoints = new ArrayList<Object []>();
420
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parents:
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191
468
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192 createIJKPoints(coords, meshid, ijkQueryID, points, missingPoints);
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diff changeset
193
471
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194 String additionWhere = TRUE_EXPRESSION;
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diff changeset
195
468
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diff changeset
196 if (missingPoints.size() == coords.length) {
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diff changeset
197 log.debug("cannot create index buffer");
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diff changeset
198 }
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199 else { // generate index filter
471
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diff changeset
200 boolean remainsMissingPoints = calculateIJ4MissingPoints(
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diff changeset
201 coords, points, missingPoints);
420
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diff changeset
202
468
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diff changeset
203 if (!remainsMissingPoints) {
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diff changeset
204 // TODO: Make Tablenames and Columns Configurable
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diff changeset
205 IndexBuffer ib = new IndexBuffer(
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parents: 440
diff changeset
206 points,
471
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diff changeset
207 I_NAME,
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diff changeset
208 J_NAME );
468
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diff changeset
209 additionWhere = ib.toWhereClause();
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diff changeset
210 log.debug("Additional Where Clause = "+additionWhere);
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diff changeset
211 }
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parents: 440
diff changeset
212 } // if generate index filter
420
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parents:
diff changeset
213
468
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diff changeset
214 return additionWhere;
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diff changeset
215 }
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parents: 440
diff changeset
216
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diff changeset
217
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parents: 440
diff changeset
218 /**
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parents: 440
diff changeset
219 * @param coords
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parents: 440
diff changeset
220 * @param points
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parents: 440
diff changeset
221 * @param missingPoints
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parents: 440
diff changeset
222 * @return
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parents: 440
diff changeset
223 */
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parents: 440
diff changeset
224 private static boolean calculateIJ4MissingPoints(
471
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diff changeset
225 Coordinate [] coords,
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diff changeset
226 List<java.awt.Point> points,
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parents: 468
diff changeset
227 ArrayList<Object[]> missingPoints
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parents: 468
diff changeset
228 ) {
468
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diff changeset
229 boolean remainsMissingPoints = !missingPoints.isEmpty();
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parents: 440
diff changeset
230
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parents: 440
diff changeset
231 if (remainsMissingPoints) {
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parents: 440
diff changeset
232 // try to guess the missing (i, j)
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parents: 440
diff changeset
233 CurveFitter iFitter = new CurveFitter(new GaussNewtonOptimizer(true));
7ba4c7222265 Added ij-Index determination for horizontal-cross-sections.
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parents: 440
diff changeset
234 CurveFitter jFitter = new CurveFitter(new GaussNewtonOptimizer(true));
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parents: 440
diff changeset
235
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parents: 440
diff changeset
236 for (int i = 0, N = points.size(); i < N; ++i) {
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parents: 440
diff changeset
237 java.awt.Point p = (java.awt.Point)points.get(i);
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parents: 440
diff changeset
238 if (p != null) {
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parents: 440
diff changeset
239 Coordinate coord = coords[i];
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parents: 440
diff changeset
240 iFitter.addObservedPoint(coord.x, p.x);
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parents: 440
diff changeset
241 jFitter.addObservedPoint(coord.y, p.y);
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parents: 440
diff changeset
242 }
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Tim Englich <tim.englich@intevation.de>
parents: 440
diff changeset
243 }
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Tim Englich <tim.englich@intevation.de>
parents: 440
diff changeset
244 try {
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parents: 440
diff changeset
245 // XXX: Assumption: (i, j) are created by componentwise linear function.
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parents: 440
diff changeset
246 // This is surely not correct because (x, y) are in a ellipsoid projection.
7ba4c7222265 Added ij-Index determination for horizontal-cross-sections.
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parents: 440
diff changeset
247 // TODO: use ellipsoid functions and fit with Levenberg Marquardt.
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parents: 440
diff changeset
248 double [] iParams = iFitter.fit(
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parents: 440
diff changeset
249 LinearFunction.INSTANCE, new double [] { 1d, 1d });
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parents: 440
diff changeset
250
7ba4c7222265 Added ij-Index determination for horizontal-cross-sections.
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parents: 440
diff changeset
251 double [] jParams = jFitter.fit(
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parents: 440
diff changeset
252 LinearFunction.INSTANCE, new double [] { 1d, 1d });
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parents: 440
diff changeset
253
7ba4c7222265 Added ij-Index determination for horizontal-cross-sections.
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parents: 440
diff changeset
254 for (int i = missingPoints.size()-1; i >= 0; --i) {
7ba4c7222265 Added ij-Index determination for horizontal-cross-sections.
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parents: 440
diff changeset
255 Object [] a = (Object [])missingPoints.get(i);
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parents: 440
diff changeset
256 Coordinate coord = (Coordinate)a[1];
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parents: 440
diff changeset
257 int pi = (int)Math.round(iParams[0]*coord.x + iParams[1]);
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parents: 440
diff changeset
258 int pj = (int)Math.round(jParams[0]*coord.y + jParams[1]);
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parents: 440
diff changeset
259 points.set(
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parents: 440
diff changeset
260 ((Integer)a[0]).intValue(),
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parents: 440
diff changeset
261 new java.awt.Point(pi, pj));
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parents: 440
diff changeset
262 }
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parents: 440
diff changeset
263
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parents: 440
diff changeset
264 remainsMissingPoints = false; // we filled the gaps
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parents: 440
diff changeset
265 }
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266 catch (FunctionEvaluationException fee) {
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267 log.error(fee);
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268 }
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269 catch (OptimizationException oe) {
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270 log.error(oe);
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271 }
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272 }
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273 return remainsMissingPoints;
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274 }
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275
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276
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277 /**
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278 * @param coords
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279 * @param meshid
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280 * @param ijkQueryID
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281 * @param points
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282 * @param missingPoints
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283 * @throws QueryException
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284 */
471
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285 private static void createIJKPoints(
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286 Coordinate[] coords,
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287 String meshid,
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288 String ijkQueryID,
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289 List<java.awt.Point> points,
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290 ArrayList<Object []> missingPoints
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291 )
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292 throws QueryException
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293 {
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294 boolean debug = log.isDebugEnabled();
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295
468
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296 QueryExecutor queryExecutor = QueryExecutorFactory
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297 .getInstance()
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298 .getQueryExecutor();
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299
420
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300 for (int i = 0; i < coords.length; i++) {
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301
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302 String wkt = toWKT(coords[i]);
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303
471
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304 Collection<Result> result = queryExecutor.executeQuery(
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305 ijkQueryID,
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306 new String [] {meshid, wkt});
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307
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308 if (!result.isEmpty()) {
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309 Result resultValue = result.iterator().next();
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310 int iPos = resultValue.getInteger(1);
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311 int jPos = resultValue.getInteger(0);
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312 if (debug) {
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313 log.debug("Found Pos "+iPos+"/"+jPos +" for "+wkt);
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314 }
420
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315 points.add(i, new java.awt.Point(iPos,jPos));
471
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316 }
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317 else {
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318 if (debug) {
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319 log.debug("No i/j Pos found for "+wkt);
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320 }
420
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321 missingPoints.add(new Object [] { Integer.valueOf(i), coords[i] });
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322 points.add(i, null);
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323 // Special Case no i,j found for Coordinate
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324 }
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325 }
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326 }
440
eb2ac62e853a Cleaned up messy code a bit in "Horizontales Schnittprofil" and "Profilschnitt".
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327
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328 public static Coordinate [] toCoordinates(String wkt) {
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329 try {
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330 LineString ls = (LineString)new WKTReader().read(wkt);
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331 return ls.getCoordinates();
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diff changeset
332 }
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parents: 423
diff changeset
333 catch (ParseException pe) {
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parents: 423
diff changeset
334 log.error("cannot read WKT line string", pe);
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parents: 423
diff changeset
335 }
eb2ac62e853a Cleaned up messy code a bit in "Horizontales Schnittprofil" and "Profilschnitt".
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parents: 423
diff changeset
336 catch (ClassCastException cce) {
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parents: 423
diff changeset
337 log.error("cannot read WKT line string", cce);
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parents: 423
diff changeset
338 }
eb2ac62e853a Cleaned up messy code a bit in "Horizontales Schnittprofil" and "Profilschnitt".
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parents: 423
diff changeset
339 return null;
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diff changeset
340 }
420
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341 }
http://dive4elements.wald.intevation.org