Time for Action – using Geometry class methods

Let's demonstrate some of the methods we just talked about. These methods can be applied to any geometry subclass—Point, Polygon, etc.

1. Open up the first example from this chapter. We'll use Firebug again to demonstrate the functions.

2. Before we can do anything we need some geometry objects. We won't use the Feature class here—we'll just demonstrate some geometry object methods. Because we aren't associating the Geometry objects with Feature objects this time, we won't see anything getting added to the map, as a Geometry object alone is not necessarily tied to any layer or feature. Let's create two geometry point objects with random coordinates:

   var geom_1 = new OpenLayers.Geometry.Point(
     (Math.floor(Math.random() * 180) - 90),
     (Math.floor(Math.random() * 180) - 90)
   );
   var geom_2 = new OpenLayers.Geometry.Point(
     (Math.floor(Math.random() * 180) - 90),
     (Math.floor(Math.random() * 180) - 90)
   );

3. Now we have two geometry point objects. Let's use...