Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/math/Interpolation3D.java @ 733:18dc6a99f4f4
Fixed NPE will using StateBase without a given Query.
gnv-artifacts/trunk@771 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Mon, 15 Mar 2010 12:34:40 +0000 |
parents | 44415ae01ddb |
children | 9a828e5a2390 |
rev | line source |
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434
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
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parents:
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1 package de.intevation.gnv.math; |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
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parents:
diff
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2 |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
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parents:
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3 import com.vividsolutions.jts.geom.Coordinate; |
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4 import com.vividsolutions.jts.geom.Envelope; |
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5 |
515
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Fixed "Profilschnitte" for gnv/issue153.
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6 import com.vividsolutions.jts.index.strtree.STRtree; |
234d9892e497
Fixed "Profilschnitte" for gnv/issue153.
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7 |
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Fixed "Profilschnitte" for gnv/issue153.
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8 import java.awt.Dimension; |
234d9892e497
Fixed "Profilschnitte" for gnv/issue153.
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9 |
234d9892e497
Fixed "Profilschnitte" for gnv/issue153.
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10 import java.io.Serializable; |
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11 |
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12 import java.util.Arrays; |
234d9892e497
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13 import java.util.List; |
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14 |
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15 import org.apache.log4j.Logger; |
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16 |
445
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Fixed some bugs and create "Profilschnitt" polygons via configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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17 /** |
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18 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de) |
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19 */ |
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20 public class Interpolation3D |
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21 implements Serializable |
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22 { |
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23 private static Logger log = Logger.getLogger(Interpolation3D.class); |
0eed5749fd63
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24 |
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25 public static final int DEFAULT_WIDTH = 1024; |
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26 public static final int DEFAULT_HEIGHT = 768; |
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27 |
515
234d9892e497
Fixed "Profilschnitte" for gnv/issue153.
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parents:
453
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28 public static final double EPS = 1e-6d; |
234d9892e497
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parents:
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29 |
434
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30 protected int width; |
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31 protected int height; |
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32 |
521
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33 protected double cellWidth; |
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34 protected double cellHeight; |
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35 |
434
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36 protected double [] raster; |
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37 protected double [] depths; |
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38 |
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39 public Interpolation3D() { |
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40 this(DEFAULT_WIDTH, DEFAULT_HEIGHT); |
0eed5749fd63
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parents:
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41 } |
0eed5749fd63
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parents:
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42 |
445
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Fixed some bugs and create "Profilschnitt" polygons via configuration.
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parents:
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43 public Interpolation3D(Dimension size) { |
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parents:
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44 this(size.width, size.height); |
f42ed4f10b79
Fixed some bugs and create "Profilschnitt" polygons via configuration.
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parents:
434
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45 } |
f42ed4f10b79
Fixed some bugs and create "Profilschnitt" polygons via configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
434
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46 |
434
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parents:
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47 public Interpolation3D(int width, int height) { |
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48 this.width = width; |
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49 this.height = height; |
0eed5749fd63
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parents:
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50 } |
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51 |
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52 public int getHeight() { |
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53 return height; |
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54 } |
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55 |
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56 public int getWidth() { |
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57 return width; |
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58 } |
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59 |
521
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60 public double getCellWidth() { |
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61 return cellWidth; |
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62 } |
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63 |
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64 public double getCellHeight() { |
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65 return cellHeight; |
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parents:
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66 } |
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parents:
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67 |
434
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68 public double [] getRaster() { |
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69 return raster; |
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70 } |
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71 |
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72 public double [] getDepths() { |
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73 return depths; |
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74 } |
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75 |
445
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76 public double getMaxDepth() { |
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77 double maxDepth = Double.MAX_VALUE; |
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78 for (int i = depths!=null?depths.length-1:0; i >= 0; --i) { |
446
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Connected vertical cross section with chart generation.
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79 double d = depths[i]; |
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80 if (!Double.isNaN(d) && d < maxDepth) { |
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81 maxDepth = d; |
445
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82 } |
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83 } |
f42ed4f10b79
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84 return maxDepth; |
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85 } |
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86 |
434
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87 public boolean interpolate( |
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88 List<? extends Coordinate> path, |
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89 List<? extends XYColumn> points, |
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90 double from, |
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91 double to, |
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92 Metrics metrics, |
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93 XYDepth xyDepth |
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94 ) { |
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95 boolean debug = log.isDebugEnabled(); |
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96 |
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97 int N = path.size(); |
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98 int M = points.size(); |
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99 |
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100 if (debug) { |
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101 log.debug("Size of path: " + N); |
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102 log.debug("Size of points: " + M); |
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103 } |
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104 |
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105 if (M < 1 || N < 2) { // nothing to do |
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106 return false; |
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107 } |
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108 |
518
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Try to cull points from set of input points when generating "Profilschnitte".
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109 List<GridCell> cells = GridCell.pointsToGridCells( |
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110 points, Interpolation2D.relevantArea(path, points)); |
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111 |
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112 if (cells.isEmpty()) { |
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113 log.warn("no cells found"); |
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114 return false; |
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115 } |
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116 |
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117 // put into spatial index to speed up finding neighbors. |
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118 STRtree spatialIndex = new STRtree(); |
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119 |
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120 for (GridCell cell: cells) { |
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121 spatialIndex.insert(cell.getEnvelope(), cell); |
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122 } |
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123 |
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124 LinearToMap linearToMap = new LinearToMap( |
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125 path, from, to, metrics); |
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126 |
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127 double [] depths = new double[width]; |
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128 Arrays.fill(depths, Double.NaN); |
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129 |
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130 double cellWidth = (to - from)/width; |
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131 |
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132 double maxDepth = Double.MAX_VALUE; |
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133 |
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134 int i = 0; |
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135 Coordinate center = new Coordinate(); |
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136 for (double p = cellWidth*0.5; i < depths.length; ++i, p += cellWidth) { |
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137 if (linearToMap.locate(p, center)) { |
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138 double depth = xyDepth.depth(center); |
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139 depths[i] = depth; |
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140 if (depth < maxDepth) { |
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141 maxDepth = depth; |
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142 } |
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143 } |
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144 } |
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145 |
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146 if (maxDepth == Double.MAX_VALUE) { |
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147 log.warn("no depth found -> no interpolation"); |
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148 return false; |
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149 } |
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150 |
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151 double cellHeight = Math.abs(maxDepth)/height; |
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152 |
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153 if (debug) { |
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Fixed some bugs and create "Profilschnitt" polygons via configuration.
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154 log.debug("max depth found: " + maxDepth); |
434
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155 log.debug("cell size: " + cellWidth + " x " + cellHeight); |
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156 } |
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157 |
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158 double [] raster = new double[width*height]; |
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159 Arrays.fill(raster, Double.NaN); |
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160 |
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161 Envelope queryBuffer = new Envelope(); |
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162 GridCell.CellFinder finder = new GridCell.CellFinder(); |
434
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163 |
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164 i = 0; |
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165 for (double p = cellWidth*0.5; i < depths.length; ++i, p += cellWidth) { |
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166 double depth = depths[i]; |
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167 if (Double.isNaN(depth) || depth >= 0d) { |
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168 continue; |
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169 } |
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170 linearToMap.locate(p, center); |
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171 |
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172 queryBuffer.init( |
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173 center.x - EPS, center.x + EPS, |
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174 center.y - EPS, center.y + EPS); |
434
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175 |
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176 finder.prepare(center); |
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177 spatialIndex.query(queryBuffer, finder); |
434
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178 |
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179 GridCell found = finder.found; |
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180 |
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181 if (found == null) { |
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182 continue; |
434
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183 } |
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184 |
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185 XYColumn n0 = (XYColumn)found.p1; |
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186 XYColumn n1 = (XYColumn)found.p2; |
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187 XYColumn n2 = (XYColumn)found.p3; |
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188 XYColumn n3 = (XYColumn)found.p4; |
434
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189 |
515
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190 if (n0.prepare(xyDepth) |
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191 && n1.prepare(xyDepth) |
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192 && n2.prepare(xyDepth) |
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193 && n3.prepare(xyDepth) |
434
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194 ) { |
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195 double y1 = Interpolation2D.interpolate( |
515
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196 n0.x, n0.y, |
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197 n1.x, n1.y, |
434
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198 center.x); |
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199 double y2 = Interpolation2D.interpolate( |
515
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200 n2.x, n2.y, |
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201 n3.x, n3.y, |
434
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202 center.x); |
521
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203 double z = -cellHeight*0.5; |
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204 for (int j = i; |
453
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vertical cross section: Fixed problem with running to max depth on every column in interpolation.
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205 j < raster.length && z >= depth; |
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vertical cross section: Fixed problem with running to max depth on every column in interpolation.
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206 z -= cellHeight, j += width) { |
434
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207 |
515
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208 double v0 = n0.value(z); |
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209 double v1 = n1.value(z); |
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210 double v2 = n2.value(z); |
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211 double v3 = n3.value(z); |
434
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212 |
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213 double z1 = Interpolation2D.interpolate( |
515
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214 n0.x, v0, |
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215 n1.x, v1, |
434
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216 center.x); |
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217 double z2 = Interpolation2D.interpolate( |
515
234d9892e497
Fixed "Profilschnitte" for gnv/issue153.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
453
diff
changeset
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218 n2.x, v2, |
234d9892e497
Fixed "Profilschnitte" for gnv/issue153.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
453
diff
changeset
|
219 n3.x, v3, |
434
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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220 center.x); |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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221 double value = Interpolation2D.interpolate( |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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222 y1, z1, |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
223 y2, z2, |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
224 center.y); |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
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225 raster[j] = value; |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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226 } |
521
1bf058f1a2d1
Generate seabed polygon to "Profilschnitte".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
519
diff
changeset
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227 // XXX: Adjusted depth to create no gap |
1bf058f1a2d1
Generate seabed polygon to "Profilschnitte".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
519
diff
changeset
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228 // between last value and ground. |
1bf058f1a2d1
Generate seabed polygon to "Profilschnitte".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
519
diff
changeset
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229 depths[i] = z+0.5d*cellHeight; |
434
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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230 } // down the x/y column |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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231 } // all along the track |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
232 |
521
1bf058f1a2d1
Generate seabed polygon to "Profilschnitte".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
519
diff
changeset
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233 this.depths = depths; |
1bf058f1a2d1
Generate seabed polygon to "Profilschnitte".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
519
diff
changeset
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234 this.raster = raster; |
1bf058f1a2d1
Generate seabed polygon to "Profilschnitte".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
519
diff
changeset
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235 this.cellWidth = cellWidth; |
1bf058f1a2d1
Generate seabed polygon to "Profilschnitte".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
519
diff
changeset
|
236 this.cellHeight = cellHeight; |
434
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
237 |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
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238 return true; |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
239 } |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
240 } |
0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
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|
241 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: |