I am working with a map that displays several circles, each with its own radius. When the page loads, I capture the user's position and show it on the map. Initially, all circles are red. My goal is to determine if the user's current position falls within any of these circles, and if so, change that specific circle's color to green instead of red. What would be the most effective approach to achieving this?
Utilizing the resources from Google Maps API, you have the ability to leverage the geometry library in order to determine the distance between the center of a circle and the latitude/longitude coordinates that represent the location of your user. You can then compare this distance with the radius of the circle.
An example implementation could look like the following:
var isPointInsideCircle = google.maps.geometry.spherical.computeDistanceBetween(circle.getCenter(), point) <= circle.getRadius();
If isPointInsideCircle evaluates to true, you can proceed to modify the color of your circle accordingly.
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