1 files changed, 73 insertions, 0 deletions
diff --git a/main/src/cgeo/geocaching/geopoint/Units.java b/main/src/cgeo/geocaching/geopoint/Units.java
new file mode 100644
index 0000000..3da3ad9
--- /dev/null
+++ b/main/src/cgeo/geocaching/geopoint/Units.java
@@ -0,0 +1,73 @@
+package cgeo.geocaching.geopoint;
+
+import cgeo.geocaching.Settings;
+
+import org.apache.commons.lang3.tuple.ImmutablePair;
+
+public class Units {
+
+    public static ImmutablePair<Double, String> scaleDistance(final double distanceKilometers) {
+        double distance;
+        String units;
+        if (Settings.isUseMetricUnits()) {
+            if (distanceKilometers >= 1) {
+                distance = distanceKilometers;
+                units = "km";
+            } else {
+                distance = distanceKilometers * 1000;
+                units = "m";
+            }
+        } else {
+            distance = distanceKilometers / IConversion.MILES_TO_KILOMETER;
+            if (distance >= 0.1) {
+                units = "mi";
+            } else {
+                distance *= 5280;
+                units = "ft";
+            }
+        }
+        return new ImmutablePair<Double, String>(distance, units);
+    }
+
+    public static String getDistanceFromKilometers(final Float distanceKilometers) {
+        if (distanceKilometers == null) {
+            return "?";
+        }
+
+        final ImmutablePair<Double, String> scaled = scaleDistance(distanceKilometers);
+        String formatString;
+        if (scaled.left >= 100) {
+            formatString = "%.0f";
+        } else if (scaled.left >= 10) {
+            formatString = "%.1f";
+        } else {
+            formatString = "%.2f";
+        }
+
+        return String.format(formatString + " %s", scaled.left, scaled.right);
+    }
+
+    /**
+     * Get human readable elevation, depending on settings for metric units.
+     * Result is rounded to full meters/feet, as the sensors don't have that precision anyway.
+     *
+     * @param meters
+     * @return
+     */
+    public static String getElevation(float meters) {
+        final ImmutablePair<Double, String> scaled = scaleDistance(meters / 1000f);
+        return (meters >= 0 ? "↥ " : "↧ ") + String.format("%d %s", Math.abs(Math.round(scaled.left)), scaled.right);
+    }
+
+    public static String getDistanceFromMeters(float meters) {
+        return getDistanceFromKilometers(meters / 1000f);
+    }
+
+    public static String getSpeed(float kilometersPerHour) {
+        final String speed = getDistanceFromKilometers(kilometersPerHour);
+        if (speed.endsWith("mi")) {
+            return speed.substring(0, speed.length() - 2) + "mph";
+        }
+        return speed + (Settings.isUseMetricUnits() ? "/h" : "ph");
+    }
+}