add PathLayer example

vtm-android-example/AndroidManifest.xml

@@ -33,6 +33,11 @@
       android:label="@string/title_activity_map" >
     </activity>
     
+     <activity
+      android:name="org.oscim.android.test.PathOverlayActivity"
+      android:label="@string/title_activity_map" >
+    </activity>
+    
   </application>
 
 </manifest>

vtm-android-example/src/org/oscim/android/test/BaseMapActivity.java

@@ -28,6 +28,8 @@ import android.view.Menu;
 
 public class BaseMapActivity extends MapActivity {
 
+	private final static boolean USE_CACHE = false;
+
 	MapView mMapView;
 	VectorTileLayer mBaseLayer;
 	TileSource mTileSource;
@@ -44,18 +46,20 @@ public class BaseMapActivity extends MapActivity {
 		mTileSource = new OSciMap4TileSource();
 		mTileSource.setOption("url", "http://opensciencemap.org/tiles/vtm");
 
-
-		mCache = new TileCache(this, "cachedir", "testdb");
-		mCache.setCacheSize(512 * (1 << 10));
-		mTileSource.setCache(mCache);
-
+		if (USE_CACHE) {
+			mCache = new TileCache(this, "cachedir", "testdb");
+			mCache.setCacheSize(512 * (1 << 10));
+			mTileSource.setCache(mCache);
+		}
 		mBaseLayer = mMap.setBaseMap(mTileSource);
 	}
 
 	@Override
 	protected void onDestroy() {
-	    super.onDestroy();
-	    mCache.dispose();
+		super.onDestroy();
+
+		if (USE_CACHE)
+			mCache.dispose();
 	}
 
 	@Override

vtm-android-example/src/org/oscim/android/test/PathOverlayActivity.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2014 Hannes Janetzek
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.android.test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.oscim.android.MapActivity;
+import org.oscim.android.MapView;
+import org.oscim.core.GeoPoint;
+import org.oscim.layers.PathLayer;
+
+import android.graphics.Color;
+import android.os.Bundle;
+
+public class PathOverlayActivity extends MapActivity {
+
+	MapView mMapView;
+
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.activity_map);
+
+		mMapView = (MapView) findViewById(R.id.mapView);
+
+
+		for (double lon = -180; lon <= 180; lon += 10) {
+			PathLayer pathLayer = new PathLayer(mMap, Color.CYAN);
+			pathLayer.addGreatCircle(new GeoPoint(-90, lon), new GeoPoint(90, lon));
+			mMap.getLayers().add(pathLayer);
+
+		}
+
+		for (double lat = -90; lat <= 90; lat += 10) {
+			List<GeoPoint> pts = new ArrayList<GeoPoint>();
+
+			for (double lon = -180; lon <= 180; lon += 10)
+				pts.add(new GeoPoint(lat, lon));
+
+			PathLayer pathLayer = new PathLayer(mMap, Color.CYAN);
+			pathLayer.setPoints(pts);
+
+			mMap.getLayers().add(pathLayer);
+		}
+
+
+		for (double lat = -90; lat <= 90; lat += 10) {
+			PathLayer pathLayer = new PathLayer(mMap, Color.LTGRAY, 4);
+			pathLayer.addGreatCircle(new GeoPoint(lat, -90), new GeoPoint(lat, 0));
+			mMap.getLayers().add(pathLayer);
+		}
+
+		for (double lat = -90; lat <= 90; lat += 10) {
+			PathLayer pathLayer = new PathLayer(mMap, Color.LTGRAY, 4);
+			mMap.getLayers().add(pathLayer);
+		}
+	}
+}

vtm-android-example/src/org/oscim/android/test/Samples.java

@@ -36,6 +36,7 @@ public class Samples extends Activity {
 		setContentView(R.layout.activity_samples);
 		LinearLayout linearLayout = (LinearLayout) findViewById(R.id.samples);
 		linearLayout.addView(createButton(SimpleMapActivity.class));
+		linearLayout.addView(createButton(PathOverlayActivity.class));
 	}
 
 	private Button createButton(final Class<?> clazz) {