/**
* DO NOT MANUALLY EDIT THIS FILE
*
* This file is auto-generated by the build.gradle copyMapsApiV2Classes task based on the map
* classes in the Google build flavor (src/google/java/org/onebusaway/android/map/googlemapsv2).
* If you want to change something in this file, please edit the sources in
* src/google/java/org/onebusaway/android/map/googlemapsv2 and rebuild the project. Gradle will
* detect that the files in the the Google build flavor changed and will re-generate the Amazon
* build flavor map classes. See Github Issues #158 and #254 for details.
*/
/* Copyright 2013 Google Inc.
Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0.html
Source - https://gist.github.com/broady/6314689
Video - https://www.youtube.com/watch?v=WKfZsCKSXVQ&feature=youtu.be
*/
package org.onebusaway.android.map.googlemapsv2;
import com.amazon.geo.mapsv2.model.LatLng;
import com.amazon.geo.mapsv2.model.Marker;
import android.animation.ObjectAnimator;
import android.animation.TypeEvaluator;
import android.animation.ValueAnimator;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Handler;
import android.os.SystemClock;
import android.util.Property;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.Interpolator;
/**
* Animation utilities for markers with Maps API.
*
* Note - this class must remain in this .map.googleMapsv2 package so that the Google and Amazon
* build flavors work correctly.
*/
public class AnimationUtil {
/**
* Animates a marker from it's current position to the provided finalPosition
*
* @param marker marker to animate
* @param finalPosition the final position of the marker after the animation
*/
public static void animateMarkerTo(final Marker marker, final LatLng finalPosition) {
// Use the appropriate implementation per API Level
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
animateMarkerToICS(marker, finalPosition);
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1) {
animateMarkerToHC(marker, finalPosition);
} else {
animateMarkerToGB(marker, finalPosition);
}
}
private static void animateMarkerToGB(final Marker marker, final LatLng finalPosition) {
final LatLngInterpolator latLngInterpolator = new LatLngInterpolator.Linear();
final LatLng startPosition = marker.getPosition();
final Handler handler = new Handler();
final long start = SystemClock.uptimeMillis();
final Interpolator interpolator = new AccelerateDecelerateInterpolator();
final float durationInMs = 3000;
handler.post(new Runnable() {
long elapsed;
float t;
float v;
@Override
public void run() {
// Calculate progress using interpolator
elapsed = SystemClock.uptimeMillis() - start;
t = elapsed / durationInMs;
v = interpolator.getInterpolation(t);
marker.setPosition(latLngInterpolator.interpolate(v, startPosition, finalPosition));
// Repeat till progress is complete.
if (t < 1) {
// Post again 16ms later.
handler.postDelayed(this, 16);
}
}
});
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR1)
private static void animateMarkerToHC(final Marker marker, final LatLng finalPosition) {
final LatLngInterpolator latLngInterpolator = new LatLngInterpolator.Linear();
final LatLng startPosition = marker.getPosition();
ValueAnimator valueAnimator = new ValueAnimator();
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
float v = animation.getAnimatedFraction();
LatLng newPosition = latLngInterpolator
.interpolate(v, startPosition, finalPosition);
marker.setPosition(newPosition);
}
});
valueAnimator.setFloatValues(0, 1); // Ignored.
valueAnimator.setDuration(3000);
valueAnimator.start();
}
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private static void animateMarkerToICS(Marker marker, LatLng finalPosition) {
final LatLngInterpolator latLngInterpolator = new LatLngInterpolator.Linear();
TypeEvaluator<LatLng> typeEvaluator = new TypeEvaluator<LatLng>() {
@Override
public LatLng evaluate(float fraction, LatLng startValue, LatLng endValue) {
return latLngInterpolator.interpolate(fraction, startValue, endValue);
}
};
Property<Marker, LatLng> property = Property.of(Marker.class, LatLng.class, "position");
ObjectAnimator animator = ObjectAnimator
.ofObject(marker, property, typeEvaluator, finalPosition);
animator.setDuration(3000);
animator.start();
}
/**
* For other LatLngInterpolator interpolators, see https://gist.github.com/broady/6314689
*/
interface LatLngInterpolator {
LatLng interpolate(float fraction, LatLng a, LatLng b);
class Linear implements LatLngInterpolator {
@Override
public LatLng interpolate(float fraction, LatLng a, LatLng b) {
double lat = (b.latitude - a.latitude) * fraction + a.latitude;
double lngDelta = b.longitude - a.longitude;
// Take the shortest path across the 180th meridian.
if (Math.abs(lngDelta) > 180) {
lngDelta -= Math.signum(lngDelta) * 360;
}
double lng = lngDelta * fraction + a.longitude;
return new LatLng(lat, lng);
}
}
}
}