Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/sq/SieveArray.java @ 7297:257d72524249
doc fix <3 .
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 11 Oct 2013 12:44:25 +0200 |
parents | af13ceeba52a |
children | 0737573aa9ac |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.artifacts.model.sq; |
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10 |
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11 import java.util.Arrays; |
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12 |
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13 import org.apache.log4j.Logger; |
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14 |
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15 public class SieveArray |
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16 { |
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17 private static final Logger log = |
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18 Logger.getLogger(SieveArray.class); |
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19 |
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20 public static final double EPSILON = 1e-8; |
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21 |
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22 public static final double [] SIEVE_DIAMETERS = { |
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23 100d, 63d, 31.5d, 16d, |
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24 8d, 4d, 2d, 1d, |
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25 0.5d, 0.25d, 0.125d, 0.063d |
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26 }; |
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27 |
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28 protected double [] loads; |
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29 protected double [] normLoads; |
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30 |
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31 public SieveArray() { |
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32 loads = new double[SIEVE_DIAMETERS.length+1]; |
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33 normLoads = new double[SIEVE_DIAMETERS.length+1]; |
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34 } |
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35 |
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36 public void doSieving(Sieve s) { |
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37 |
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38 double diameter = s.getDiameter(); |
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39 |
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40 for (int i = 0; i < SIEVE_DIAMETERS.length; ++i) { |
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41 if (diameter >= SIEVE_DIAMETERS[i]) { |
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42 loads[i] += s.getLoad(); |
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43 return; |
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44 } |
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45 } |
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46 loads[loads.length-1] += s.getLoad(); |
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47 } |
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48 |
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49 public double totalLoad() { |
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50 double sum = 0d; |
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51 for (double load: loads) { |
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52 sum += load; |
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53 } |
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54 return sum; |
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55 } |
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56 |
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57 public void calculateNormLoads() { |
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58 double total = totalLoad(); |
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59 if (Math.abs(total) < EPSILON) { |
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60 System.arraycopy(loads, 0, normLoads, 0, loads.length); |
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61 return; |
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62 } |
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63 total = 1d/total; |
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64 for (int i = 0; i < normLoads.length; ++i) { |
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65 normLoads[i] = total*loads[i]; |
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66 } |
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67 log.debug("calculated norm loads: " + Arrays.toString(normLoads)); |
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68 } |
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69 |
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70 public void adjust(double eight, double four) { |
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71 this.normLoads[4] = eight; |
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72 this.normLoads[5] = four; |
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73 } |
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74 |
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75 /** |
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76 * Gets the loads for this instance. |
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77 * |
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78 * @return The loads. |
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79 */ |
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80 public double[] getLoads() { |
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81 return this.loads; |
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82 } |
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83 |
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84 /** |
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85 * Gets the loads for this instance. |
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86 * |
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87 * @param index The index to get. |
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88 * @return The loads. |
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89 */ |
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90 public double getLoads(int index) { |
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91 return this.loads[index]; |
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92 } |
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93 |
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94 /** |
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95 * Gets the normLoads for this instance. |
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96 * |
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97 * @return The normLoads. |
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98 */ |
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99 public double[] getNormLoads() { |
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100 return this.normLoads; |
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101 } |
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102 |
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103 /** |
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104 * Gets the normLoads for this instance. |
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105 * |
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106 * @param index The index to get. |
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107 * @return The normLoads. |
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108 */ |
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109 public double getNormLoads(int index) { |
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110 return this.normLoads[index]; |
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111 } |
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112 |
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113 public double sandNormFraction() { |
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114 double sum = 0d; |
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115 for (int i = 7; i < normLoads.length; ++i) { |
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116 sum += normLoads[i]; |
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117 } |
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118 return sum; |
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119 } |
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120 |
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121 public double coarseNormFraction() { |
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122 double sum = 0d; |
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123 for (int i = 0; i < 4; ++i) { |
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124 sum += normLoads[i]; |
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125 } |
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126 return sum; |
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127 } |
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128 |
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129 public double gravelNormFraction() { |
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130 double sum = 0d; |
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131 for (int i = 4; i < 7; ++i) { |
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132 sum += normLoads[i]; |
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133 } |
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134 return sum; |
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135 } |
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136 } |
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137 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |