Question

I need to draw a circle in google Maps V3 but I have 2 coordinates, the center and the outter position. Problem is the API expects center and “radius”.
For example:

var myCirclePath = [];
myCirclePath.push(new google.maps.LatLng(18.111111,66.111111));
myCirclePath.push(new google.maps.LatLng(18.223344,66.222222));

var myCircle = new google.maps.Circle({
    center: myCirclePath[0],
    radius: // what do I put here????
    map: map
});

I searched around the web and find a lot of stuff about radians, degrees, sin, atan, and what not… however, I’m not good at math and I’m totally lost.

So, the questions are:

a) What should I put in the “radius:” option?

b) How can I center the zoom around the circle? “Bounds.Extend” will not do it

Answer 1

So, the questions are:

a) What should I put in the "radius:" option?

Use the geometry library computeDistanceBetween() to find the radius (passing in your two points)

b) How can I center the zoom around the circle? "Bounds.Extend" will not do it

Once you have created the circle, you can call the getBounds() method on it to get its bounds