Clean up UnitConversionUtils.

2012-02-16 16:30:04 -08:00
parent 81dfdb5bda
commit cd1a99727a
19 changed files with 152 additions and 128 deletions
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2008 Google Inc.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.android.apps.mytracks.util;
+
+/**
+ * Utilities for converting units.
+ *
+ * @author Sandor Dornbush
+ */
+public class UnitConversionUtils {
+
+  private UnitConversionUtils() {}
+  
+  // multiplication factor to convert kilometers to miles
+  public static final double KM_TO_MI = 0.621371192;
+
+  // multiplication factor to convert miles to kilometers
+  public static final double MI_TO_KM = 1 / KM_TO_MI;
+
+  // multiplication factor to convert miles to feet
+  public static final double MI_TO_FT = 5280.0;
+
+  // multiplication factor to convert feet to miles
+  public static final double FT_TO_MI = 1 / MI_TO_FT;
+
+  // multiplication factor to convert meters to kilometers
+  public static final double M_TO_KM = 1 / 1000.0;
+
+  // multiplication factor to convert meters per second to kilometers per hour
+  public static final double MS_TO_KMH = M_TO_KM * 60 * 60;
+
+  // multiplication factor to convert meters to miles
+  public static final double M_TO_MI = M_TO_KM * KM_TO_MI;
+
+  // multiplication factor to convert meters to feet
+  public static final double M_TO_FT = M_TO_MI * MI_TO_FT;
+
+  // multiplication factor to convert degrees to radians
+  public static final double DEG_TO_RAD = Math.PI / 180.0;
+}