Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/shared/DoubleUtils.java @ 5006:769593a84606 dami
Importer: Behold, Logging!
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Fri, 15 Feb 2013 16:22:13 +0100 |
parents | 51ed89b754ae |
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Bugfix: #336 Improved determination of min/max KM values - code moved to ArtifactDescription.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 package de.intevation.flys.client.shared; |
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2 |
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3 |
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4 public final class DoubleUtils { |
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5 |
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Bugfix: #336 Improved determination of min/max KM values - code moved to ArtifactDescription.
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6 public static final String DEFAULT_DELIM = " "; |
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7 |
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8 |
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Bugfix: #336 Improved determination of min/max KM values - code moved to ArtifactDescription.
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9 private DoubleUtils() { |
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10 } |
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11 |
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12 |
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13 public static Double getDouble(String value) { |
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14 try { |
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15 return Double.valueOf(value); |
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16 } |
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17 catch (NumberFormatException nfe) { |
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18 // do nothing |
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19 } |
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20 |
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21 return null; |
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22 } |
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23 |
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24 |
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25 public static double[] getMinMax(String value) { |
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26 return getMinMax(value, DEFAULT_DELIM); |
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27 } |
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28 |
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29 |
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30 public static double[] getMinMax(String value, String delim) { |
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31 if (value == null) { |
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32 return null; |
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33 } |
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34 |
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35 String[] values = value.split(delim); |
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36 |
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37 int len = values != null ? values.length : 0; |
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38 double[] mm = new double[] { Double.MAX_VALUE, -Double.MAX_VALUE }; |
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39 |
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40 for (int i = 0; i < len; i++) { |
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41 Double d = getDouble(values[i]); |
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42 |
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43 if (d != null) { |
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44 mm[0] = mm[0] < d ? mm[0] : d; |
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45 mm[1] = mm[1] > d ? mm[1] : d; |
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46 } |
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47 } |
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48 |
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49 return mm[0] != Double.MAX_VALUE && mm[1] != -Double.MAX_VALUE |
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50 ? mm |
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51 : null; |
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52 } |
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53 |
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54 /** toIndex is not inclusive, fromIndex is. */ |
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55 static void fill(double[] array, int fromIndex, int toIndex, double val) { |
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56 for (int i = fromIndex; i < toIndex; i++) { |
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57 array[i] = val; |
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58 } |
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59 } |
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60 |
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61 /** @see java.util.Arrays.copyOf */ |
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62 public static double[] copyOf(double[] toCopy, int newLen) { |
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63 double[] nArray = new double[newLen]; |
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64 |
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65 if (toCopy == null) { |
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66 fill(nArray, 0, nArray.length, 0d); |
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67 return nArray; |
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68 } |
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69 |
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70 int goTo = (newLen < toCopy.length) |
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71 ? newLen |
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72 : toCopy.length; |
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73 |
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74 for (int i = 0; i < goTo; i++) { |
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75 nArray[i] = toCopy[i]; |
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76 } |
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77 fill (nArray, goTo, nArray.length, 0d); |
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78 return nArray; |
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79 } |
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Bugfix: #336 Improved determination of min/max KM values - code moved to ArtifactDescription.
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80 } |
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81 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |