Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / data / UnitSetLibrary.java

diff --git a/src/tim/prune/data/UnitSetLibrary.java b/src/tim/prune/data/UnitSetLibrary.java
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+++ b/src/tim/prune/data/UnitSetLibrary.java
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+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);
+       }
+}