Add sample showing MapPosition animations not merge (#252)

vtm-android-example/AndroidManifest.xml

@@ -47,6 +47,9 @@
         <activity
             android:name=".MapFragmentActivity"
             android:configChanges="keyboardHidden|orientation|screenSize" />
+        <activity
+            android:name=".MapPositionActivity"
+            android:configChanges="keyboardHidden|orientation|screenSize" />
         <activity
             android:name=".MapsforgeMapActivity"
             android:configChanges="keyboardHidden|orientation|screenSize" />

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

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2016 Mathieu De Brito
+ *
+ * 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 android.os.Bundle;
+import android.util.Log;
+
+import org.oscim.core.MapPosition;
+import org.oscim.core.MercatorProjection;
+
+public class MapPositionActivity extends SimpleMapActivity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        runTest();
+    }
+
+    void runTest() {
+
+        // 1 - ask for a bearing
+        int bearing = 180;
+        animateToBearing(bearing);
+
+        // 2 - ask for a new location
+        double latitude = Math.random() * 60;
+        double longitude = Math.random() * 180;
+        animateToLocation(latitude, longitude);
+
+        // If animations have merged, final bearing should 180
+        checkThatAnimationsHaveMerged(bearing);
+    }
+
+    void animateToLocation(final double latitude, final double longitude) {
+        mMapView.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                MapPosition p = mMapView.map().getMapPosition();
+                p.setX(MercatorProjection.longitudeToX(longitude));
+                p.setY(MercatorProjection.latitudeToY(latitude));
+                mMapView.map().animator().animateTo(1000, p);
+            }
+        }, 1000);
+    }
+
+    void animateToBearing(final int bearing) {
+        mMapView.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                MapPosition p = mMapView.map().getMapPosition();
+                p.setBearing(bearing);
+                mMapView.map().animator().animateTo(1000, p);
+            }
+        }, 500);
+    }
+
+    void checkThatAnimationsHaveMerged(final int bearing) {
+        mMapView.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                MapPosition p = mMapView.map().getMapPosition();
+                if (p.getBearing() != bearing) {
+                    Log.e(MapPositionActivity.class.getName(), "Bearing is not correct (expected:" + bearing + ", actual:" + p.getBearing() + ")");
+                }
+            }
+        }, 3000);
+    }
+}

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

@@ -63,6 +63,7 @@ public class Samples extends Activity {
 
         linearLayout.addView(createLabel("Experiments"));
         linearLayout.addView(createButton(LayerGroupActivity.class));
+        linearLayout.addView(createButton(MapPositionActivity.class));
         linearLayout.addView(createButton(S3DBMapActivity.class));
         linearLayout.addView(createButton(ThemeStylerActivity.class));
         linearLayout.addView(createButton(JeoIndoorMapActivity.class));