Google Maps Marker Animation - Overview

Sometimes you need more than place a Marker📍 at map canvas 🌍, you need to smoothly move through Google Maps.

This package will help you to animate Markers' position changes and more.

This version v3.0.0-alpha includes many useful features, namely:

• Marker's position animation
• Multiple markers' animations at the same time
• Null-safety compatible
• Ripple effect over marker position
• Marker's rotation or bearing/heading of direction
• Multipoint linear animation (Piecewise Linear Approximation Algorithm)
• Support animation curves and duration
• Widget-based with fully customized behaviors
• Animation warm-up for improving performance
• Useful LocationTween, AngleTween and PolynomialLocationInterpolator core logic

Note

This package only animate the marker's changes. Both Geolocation and Google Maps configuration are out of the scope of this package. So, before trying this package to ensure that you place a marker you Google Map or get location updates.

Screenshots

Example

//Setting dummies values
const kStartPosition = LatLng(18.488213, -69.959186);
const kSantoDomingo = CameraPosition(target: kStartPosition, zoom: 15);
const kMarkerId = MarkerId('MarkerId1');
const kDuration = Duration(seconds: 2);
const kLocations = [
  kStartPosition,
  LatLng(18.488101, -69.957995),
  LatLng(18.489210, -69.952459),
  LatLng(18.487307, -69.952759),
];

class SimpleMarkerAnimationExample extends StatefulWidget {
  @override
  SimpleMarkerAnimationExampleState createState() => SimpleMarkerAnimationExampleState();
}

class SimpleMarkerAnimationExampleState extends State<SimpleMarkerAnimationExample> {
  final markers = <MarkerId, Marker>{};
  final controller = Completer<GoogleMapController>();
  final stream = Stream.periodic(kDuration, (count) => kLocations[count]).take(kLocations.length);

  @override
  void initState() {
    stream.forEach((value) => newLocationUpdate(value));

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Google Maps Markers Animation Example',
      home: Animarker(
        curve: Curves.ease,
        mapId: controller.future.then<int>((value) => value.mapId), //Grab Google Map Id
        markers: markers.values.toSet(),
        child: GoogleMap(
          mapType: MapType.normal,
          initialCameraPosition: kSantoDomingo,
          onMapCreated: (gController) =>
              controller.complete(gController), //Complete the future GoogleMapController
        ),
      ),
    );
  }

  void newLocationUpdate(LatLng latLng) {
     var marker = RippleMarker(
       markerId: kMarkerId,
       position: latLng,
       ripple: true,
     );
     setState(() => markers[kMarkerId] = marker);
  }
}

Using Ripple Effect

You only need to use the marker wrapper class RippleMarker, and set the ripple flag in order you can the ripple state.

Animarker(
 // Other properties
 rippleRadius: 0.5,  //[0,1.0] range, how big is the circle
 rippleColor: Colors.teal, // Color of fade ripple circle
 rippleDuration: Duration(milliseconds: 2500), //Pulse ripple duration
 markers: <Marker>{
  //Ripple Marker
  RippleMarker(
	  markerId: MarkerId('MarkerId1'),
	  position: LatLng(0, 0),
	  ripple: true,  //Ripple state
 ),
 //Non-ripple marker
 Marker(
	 markerId: MarkerId('MarkerId2'),
	 position: LatLng(0, 0), )
 },
 // Other properties
)

So, Let's it rip!

Using Rotation

The Marker rotation can be useful for Uber-like or delivery apps. The bearing or heading is the angle of direction which the Marker is moving toward to over the earth.

Animarker(
 // Other properties
 useRotation : true, // Actived by default
 markers: <Marker>{
 Marker(
	 markerId: MarkerId('MarkerId2'),
	 position: LatLng(0, 0), )
 },
 // Other properties
)

This way useRotation = true, you control globally if Marker should rotate or not.

Using Curves and Duration

Just like a normal Flutter animation, you can set a Curve o Duration to get the desire effect or result. So flexible, right?

Animarker(
 // Other properties
 curve: Curves.bounceInOut,
 duration: Duration(milliseconds: 2000),
 markers: <Marker>{
 Marker(
	 markerId: MarkerId('MarkerId2'),
	 position: LatLng(0, 0), )
 },
 // Other properties
)

## License

BSD-3-Clause License Copyright 2020 Gauris Javier. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.```