From 44b9534a0dc3709450e434089b09a6039275d512 Mon Sep 17 00:00:00 2001
From: Eugene Crosser <Eugene.Crosser@ru.ibm.com>
Date: Thu, 2 Feb 2012 18:02:17 +0400
Subject: [PATCH] compute distance (wip)

---
 res/values/arrays.xml                      | 24 ++++++++++++
 src/org/average/whereami/LastLocation.java | 45 ++++++++++++++++++++--
 src/org/average/whereami/PhoneLog.java     |  3 +-
 src/org/average/whereami/WhereAmI.java     |  4 +-
 4 files changed, 70 insertions(+), 6 deletions(-)

diff --git a/res/values/arrays.xml b/res/values/arrays.xml
index 4463e72..1dc3f55 100644
--- a/res/values/arrays.xml
+++ b/res/values/arrays.xml
@@ -10,4 +10,28 @@
     <item>1200000</item>
     <item>3600000</item>
   </string-array>
+  <string-array name="loc_names">
+    <item>дома</item>
+    <item>на работе</item>
+    <item>в Москве</item>
+    <item>в отъезде</item>
+  </string-array>
+  <string-array name="loc_lats">
+    <item>55.79214</item>
+    <item>55.65619</item>
+    <item>55.743</item>
+    <item>0</item>
+  </string-array>
+  <string-array name="loc_lons">
+    <item>37.56634</item>
+    <item>37.5261</item>
+    <item>37.614</item>
+    <item>0</item>
+  </string-array>
+  <string-array name="loc_dists">
+    <item>1</item>
+    <item>1</item>
+    <item>25</item>
+    <item>0</item>
+  </string-array>
 </resources>
diff --git a/src/org/average/whereami/LastLocation.java b/src/org/average/whereami/LastLocation.java
index 230b848..914a615 100644
--- a/src/org/average/whereami/LastLocation.java
+++ b/src/org/average/whereami/LastLocation.java
@@ -2,7 +2,7 @@ package org.average.whereami;
 
 import org.average.whereami.CredentialStore;
 
-//import java.lang.Long;
+import java.lang.Math;
 
 import com.google.api.client.extensions.android2.AndroidHttp;
 import com.google.api.client.auth.oauth2.draft10.AccessTokenResponse;
@@ -18,6 +18,7 @@ import com.google.api.services.latitude.model.Location;
 
 import android.content.Context;
 import android.content.SharedPreferences;
+import android.content.res.Resources;
 import android.util.Log;
 
 public final class LastLocation extends Oracle {
@@ -26,7 +27,17 @@ public final class LastLocation extends Oracle {
 
 	private Latitude latitude;
 
-	public LastLocation(final CredentialStore store) {
+	private String[] loc_names;
+	private String[] loc_lats;
+	private String[] loc_lons;
+	private String[] loc_dists;
+
+	public LastLocation(final Resources res, final CredentialStore store) {
+		loc_names = res.getStringArray(R.array.loc_names);
+		loc_lats = res.getStringArray(R.array.loc_lats);
+		loc_lons = res.getStringArray(R.array.loc_lons);
+		loc_lons = res.getStringArray(R.array.loc_dists);
+
 		HttpTransport transport = AndroidHttp.newCompatibleTransport();
 		JsonFactory jsonFactory = new JacksonFactory();
 		AccessTokenResponse token = store.read();
@@ -85,6 +96,34 @@ public final class LastLocation extends Oracle {
 	private String locationMessage(Double lat, Double lon, Long tsm) {
 		Log.v(TAG, "entering locationMessage(" + lat +
 				"," + lon + "," + tsm + ")");
-		return "Location: " + lat + "N " + lon + "E at " + tsm/1000;
+		String locmsg = "<UNSET>";
+		for (int i = 0; i < loc_names.length; i++) {
+			Double dist = haversine(lat, lon,
+					Double.parseDouble(loc_lats[i]),
+					Double.parseDouble(loc_lons[i]));
+			Log.v(TAG, "Dist from " + loc_names[i] +
+				" is " + dist);
+			//if ((loc_dists[i] == "0") ||
+			//    (dist < Double.parseDouble(loc_dists[i]))) {
+			//	locmsg = loc_names[i];
+			//	break;
+			//}
+		}
+		return locmsg;
+	}
+
+	private Double toRad(Double deg) {
+		return deg * 3.14159265 / 180;
+	}
+
+	private Double haversine(Double lat1, Double lon1,
+				Double lat2, Double lon2) {
+		Double dlat = toRad(lat2 - lat1);
+		Double dlon = toRad(lon2 - lon1);
+		Double a = Math.sin(dlat / 2) * Math.sin(dlat / 2) +
+			Math.sin(dlon / 2) * Math.sin(dlon / 2) *
+			Math.cos(toRad(lat1)) * Math.cos(toRad(lat2));
+		Double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
+		return 6371 * c;
 	}
 }
diff --git a/src/org/average/whereami/PhoneLog.java b/src/org/average/whereami/PhoneLog.java
index 8522e84..dbb7353 100644
--- a/src/org/average/whereami/PhoneLog.java
+++ b/src/org/average/whereami/PhoneLog.java
@@ -22,6 +22,7 @@ import com.google.api.services.calendar.model.Events;
 import com.google.common.collect.Lists;
 
 import android.content.Context;
+import android.content.res.Resources;
 import android.content.SharedPreferences;
 import android.util.Log;
 
@@ -31,7 +32,7 @@ public final class PhoneLog extends Oracle {
 
 	private Calendar calendar;
 
-	public PhoneLog(final CredentialStore store) {
+	public PhoneLog(final Resources res, final CredentialStore store) {
 		HttpTransport transport = AndroidHttp.newCompatibleTransport();
 		JsonFactory jsonFactory = new JacksonFactory();
 		AccessTokenResponse token = store.read();
diff --git a/src/org/average/whereami/WhereAmI.java b/src/org/average/whereami/WhereAmI.java
index e78cb04..959bd0e 100644
--- a/src/org/average/whereami/WhereAmI.java
+++ b/src/org/average/whereami/WhereAmI.java
@@ -213,9 +213,9 @@ public class WhereAmI extends Activity
         tvs = (TextView)findViewById(R.id.timestamp);
 	ut = new UpdateTarget[] {
             new UpdateTarget((TextView)findViewById(R.id.location),
-                             new PhoneLog(store)),
+                             new PhoneLog(res, store)),
             new UpdateTarget((TextView)findViewById(R.id.phonecall),
-                             new LastLocation(store))
+                             new LastLocation(res, store))
         };
         Log.w(TAG, "created UI, about to start update task");
 	mHandler.post(updateClock);
-- 
2.39.2