Mercurial > dive4elements > river
comparison flys-client/src/main/java/org/dive4elements/river/client/shared/DoubleUtils.java @ 5834:f507086aa94b
Repaired internal references.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Thu, 25 Apr 2013 12:31:32 +0200 |
| parents | flys-client/src/main/java/de/intevation/flys/client/shared/DoubleUtils.java@51ed89b754ae |
| children | 821a02bbfb4e |
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| 5833:a2bdc0f524e8 | 5834:f507086aa94b |
|---|---|
| 1 package de.intevation.flys.client.shared; | |
| 2 | |
| 3 | |
| 4 public final class DoubleUtils { | |
| 5 | |
| 6 public static final String DEFAULT_DELIM = " "; | |
| 7 | |
| 8 | |
| 9 private DoubleUtils() { | |
| 10 } | |
| 11 | |
| 12 | |
| 13 public static Double getDouble(String value) { | |
| 14 try { | |
| 15 return Double.valueOf(value); | |
| 16 } | |
| 17 catch (NumberFormatException nfe) { | |
| 18 // do nothing | |
| 19 } | |
| 20 | |
| 21 return null; | |
| 22 } | |
| 23 | |
| 24 | |
| 25 public static double[] getMinMax(String value) { | |
| 26 return getMinMax(value, DEFAULT_DELIM); | |
| 27 } | |
| 28 | |
| 29 | |
| 30 public static double[] getMinMax(String value, String delim) { | |
| 31 if (value == null) { | |
| 32 return null; | |
| 33 } | |
| 34 | |
| 35 String[] values = value.split(delim); | |
| 36 | |
| 37 int len = values != null ? values.length : 0; | |
| 38 double[] mm = new double[] { Double.MAX_VALUE, -Double.MAX_VALUE }; | |
| 39 | |
| 40 for (int i = 0; i < len; i++) { | |
| 41 Double d = getDouble(values[i]); | |
| 42 | |
| 43 if (d != null) { | |
| 44 mm[0] = mm[0] < d ? mm[0] : d; | |
| 45 mm[1] = mm[1] > d ? mm[1] : d; | |
| 46 } | |
| 47 } | |
| 48 | |
| 49 return mm[0] != Double.MAX_VALUE && mm[1] != -Double.MAX_VALUE | |
| 50 ? mm | |
| 51 : null; | |
| 52 } | |
| 53 | |
| 54 /** toIndex is not inclusive, fromIndex is. */ | |
| 55 static void fill(double[] array, int fromIndex, int toIndex, double val) { | |
| 56 for (int i = fromIndex; i < toIndex; i++) { | |
| 57 array[i] = val; | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 /** @see java.util.Arrays.copyOf */ | |
| 62 public static double[] copyOf(double[] toCopy, int newLen) { | |
| 63 double[] nArray = new double[newLen]; | |
| 64 | |
| 65 if (toCopy == null) { | |
| 66 fill(nArray, 0, nArray.length, 0d); | |
| 67 return nArray; | |
| 68 } | |
| 69 | |
| 70 int goTo = (newLen < toCopy.length) | |
| 71 ? newLen | |
| 72 : toCopy.length; | |
| 73 | |
| 74 for (int i = 0; i < goTo; i++) { | |
| 75 nArray[i] = toCopy[i]; | |
| 76 } | |
| 77 fill (nArray, goTo, nArray.length, 0d); | |
| 78 return nArray; | |
| 79 } | |
| 80 } | |
| 81 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |