Mercurial > dive4elements > river
view 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 |
children |
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package de.intevation.flys.client.shared; public final class DoubleUtils { public static final String DEFAULT_DELIM = " "; private DoubleUtils() { } public static Double getDouble(String value) { try { return Double.valueOf(value); } catch (NumberFormatException nfe) { // do nothing } return null; } public static double[] getMinMax(String value) { return getMinMax(value, DEFAULT_DELIM); } public static double[] getMinMax(String value, String delim) { if (value == null) { return null; } String[] values = value.split(delim); int len = values != null ? values.length : 0; double[] mm = new double[] { Double.MAX_VALUE, -Double.MAX_VALUE }; for (int i = 0; i < len; i++) { Double d = getDouble(values[i]); if (d != null) { mm[0] = mm[0] < d ? mm[0] : d; mm[1] = mm[1] > d ? mm[1] : d; } } return mm[0] != Double.MAX_VALUE && mm[1] != -Double.MAX_VALUE ? mm : null; } /** toIndex is not inclusive, fromIndex is. */ static void fill(double[] array, int fromIndex, int toIndex, double val) { for (int i = fromIndex; i < toIndex; i++) { array[i] = val; } } /** @see java.util.Arrays.copyOf */ public static double[] copyOf(double[] toCopy, int newLen) { double[] nArray = new double[newLen]; if (toCopy == null) { fill(nArray, 0, nArray.length, 0d); return nArray; } int goTo = (newLen < toCopy.length) ? newLen : toCopy.length; for (int i = 0; i < goTo; i++) { nArray[i] = toCopy[i]; } fill (nArray, goTo, nArray.length, 0d); return nArray; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :