X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fdata%2FUnitSetLibrary.java;fp=src%2Ftim%2Fprune%2Fdata%2FUnitSetLibrary.java;h=37f3cfc5f4a8f54f94eef9311ee97cf925390a4e;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/data/UnitSetLibrary.java b/src/tim/prune/data/UnitSetLibrary.java
new file mode 100644
index 0000000..37f3cfc
--- /dev/null
+++ b/src/tim/prune/data/UnitSetLibrary.java
@@ -0,0 +1,75 @@
+package tim.prune.data;
+
+/**
+ * List of all possible unit sets, for example
+ * metric, imperial, nautical
+ */
+public abstract class UnitSetLibrary
+{
+	// Distance units - all conversion factors are from metres
+	/** Units for feet (used for loading and converting values) */
+	public static final Unit UNITS_FEET       = new Unit("feet", 3.2808);
+	/** Units for metres */
+	public static final Unit UNITS_METRES     = new Unit("metres");
+	/** Units for km */
+	public static final Unit UNITS_KILOMETRES = new Unit("kilometres", 1/1000.0);
+	/** Units for miles */
+	public static final Unit UNITS_MILES      = new Unit("miles", 1/1609.3);
+	/** Units for nautical miles */
+	public static final Unit UNITS_NAUTICAL_MILES = new Unit("nauticalmiles", 1/1852.0);
+
+	// Speed units - all conversion factors from metres per second
+	public static final Unit SPEED_UNITS_METRESPERSEC = new Unit(UNITS_METRES, "persec");
+	public static final Unit SPEED_UNITS_FEETPERSEC   = new Unit(UNITS_FEET, "persec");
+	public static final Unit SPEED_UNITS_MILESPERHOUR = new Unit(UNITS_MILES, "perhour", 60.0 * 60.0);
+	public static final Unit SPEED_UNITS_KNOTS        = new Unit(UNITS_NAUTICAL_MILES, "perhour", 60.0 * 60.0);
+	public static final Unit SPEED_UNITS_KMPERHOUR    = new Unit(UNITS_KILOMETRES, "perhour", 60.0 * 60.0);
+	public static final Unit[] ALL_SPEED_UNITS = {SPEED_UNITS_METRESPERSEC, SPEED_UNITS_KMPERHOUR,
+		SPEED_UNITS_FEETPERSEC, SPEED_UNITS_MILESPERHOUR};
+
+	/** Array of available unit sets */
+	private static UnitSet[] _sets =
+	{
+		new UnitSet("unitset.kilometres", UNITS_KILOMETRES, UNITS_METRES, SPEED_UNITS_KMPERHOUR, SPEED_UNITS_METRESPERSEC),
+		new UnitSet("unitset.miles", UNITS_MILES, UNITS_FEET, SPEED_UNITS_MILESPERHOUR, SPEED_UNITS_FEETPERSEC),
+		new UnitSet("unitset.nautical", UNITS_NAUTICAL_MILES, UNITS_FEET, SPEED_UNITS_KNOTS, SPEED_UNITS_FEETPERSEC)
+	};
+
+	/**
+	 * @return number of available unit sets
+	 */
+	public static int getNumUnitSets() {
+		return _sets.length;
+	}
+
+	/**
+	 * Get the specified unit set
+	 * @param inIndex index of set starting from 0
+	 * @return specified unit set or the default one if index out of range
+	 */
+	public static UnitSet getUnitSet(int inIndex)
+	{
+		if (inIndex >= 0 && inIndex < getNumUnitSets()) {
+			return _sets[inIndex];
+		}
+		return _sets[0];
+	}
+
+	/**
+	 * Get the unit set specified by the given key
+	 * @param inKey key to look for
+	 * @return unit set with given key, or default set if key not found
+	 */
+	public static UnitSet getUnitSet(String inKey)
+	{
+		// Loop over all available unit sets
+		for (UnitSet set : _sets)
+		{
+			if (set.getNameKey().equals(inKey)) {
+				return set;
+			}
+		}
+		// Not found in list, so just return the first one
+		return getUnitSet(0);
+	}
+}