How can I encode a circle in android maps?

Question

I know that we can encode a polygon in android like this:

  encoded_string = polyutil.encode(polygon.getPoints());

But how can we get a encoded string for a circle?

Answer 1

I don't know what polyutil is or what its encode method does, but a circle's equivalent of a polygon's points is the center and radius. It shouldn't be too hard to call getCenter() and getRadius() on the circle and make a string with that data in it.

https://developer.android.com/reference/com/google/android/gms/maps/model/Circle.html

Answer 2

You may be able to use Java Topology Suite to do it. http://mvnrepository.com/artifact/com.vividsolutions/jts/1.11

    Coordinate center = new Coordinate(entity.getLongitude(), entity.getLatitude());
    GeometricShapeFactory gsf = new GeometricShapeFactory();

    gsf.setCentre(center);
    gsf.setNumPoints(20);
    gsf.setSize(10.2);

    Polygon poly = gsf.createCircle();

    Coordinate[] coordArray = poly.getCoordinates();

Not sure if this is what you want, but it'll give you an array of Coordinates on the perimeter of the circle, so it may be worth playing around with.