Remove unused sphere.initialBearing() method

src/ol/sphere/sphere.js

@@ -126,24 +126,6 @@ ol.Sphere.prototype.interpolate = function(c1, c2, fraction) {
 };
 
 
-/**
- * Returns the initial bearing from c1 to c2.
- *
- * @param {ol.Coordinate} c1 Coordinate 1.
- * @param {ol.Coordinate} c2 Coordinate 2.
- * @return {number} Initial bearing.
- */
-ol.Sphere.prototype.initialBearing = function(c1, c2) {
-  var lat1 = goog.math.toRadians(c1[1]);
-  var lat2 = goog.math.toRadians(c2[1]);
-  var deltaLon = goog.math.toRadians(c2[0] - c1[0]);
-  var y = Math.sin(deltaLon) * Math.cos(lat2);
-  var x = Math.cos(lat1) * Math.sin(lat2) -
-      Math.sin(lat1) * Math.cos(lat2) * Math.cos(deltaLon);
-  return goog.math.toDegrees(Math.atan2(y, x));
-};
-
-
 /**
  * Returns the maximum latitude of the great circle defined by bearing and
  * latitude.

test/spec/ol/sphere/sphere.test.js

@@ -13,105 +13,90 @@ describe('ol.Sphere', function() {
       c1: [0, 0],
       c2: [0, 0],
       haversineDistance: 0,
-      initialBearing: 0,
       midpoint: [0, 0]
     },
     {
       c1: [0, 0],
       c2: [45, 45],
       haversineDistance: 6671.695598673525,
-      initialBearing: 35.264389682754654,
       midpoint: [18.434948822922006, 24.0948425521107]
     },
     {
       c1: [0, 0],
       c2: [-45, 45],
       haversineDistance: 6671.695598673525,
-      initialBearing: -35.264389682754654,
       midpoint: [-18.434948822922006, 24.0948425521107]
     },
     {
       c1: [0, 0],
       c2: [-45, -45],
       haversineDistance: 6671.695598673525,
-      initialBearing: -144.73561031724535,
       midpoint: [-18.434948822922006, -24.0948425521107]
     },
     {
       c1: [0, 0],
       c2: [45, -45],
       haversineDistance: 6671.695598673525,
-      initialBearing: 144.73561031724535,
       midpoint: [18.434948822922006, -24.0948425521107]
     },
     {
       c1: [45, 45],
       c2: [45, 45],
       haversineDistance: 0,
-      initialBearing: 0,
       midpoint: [45.00000000000005, 45]
     },
     {
       c1: [45, 45],
       c2: [-45, 45],
       haversineDistance: 6671.695598673525,
-      initialBearing: -54.73561031724535,
       midpoint: [0, 54.735610317245346]
     },
     {
       c1: [45, 45],
       c2: [-45, -45],
       haversineDistance: 13343.391197347048,
-      initialBearing: -125.26438968275465,
       midpoint: [0, 0]
     },
     {
       c1: [45, 45],
       c2: [45, -45],
       haversineDistance: 10007.543398010286,
-      initialBearing: 180,
       midpoint: [45.00000000000005, 0]
     },
     {
       c1: [-45, 45],
       c2: [-45, 45],
       haversineDistance: 0,
-      initialBearing: 0,
       midpoint: [-45.00000000000005, 45]
     },
     {
       c1: [-45, 45],
       c2: [-45, -45],
       haversineDistance: 10007.543398010286,
-      initialBearing: 180,
       midpoint: [-45.00000000000005, 0]
     },
     {
       c1: [-45, 45],
       c2: [45, -45],
       haversineDistance: 13343.391197347048,
-      initialBearing: 125.26438968275465,
       midpoint: [0, 0]
     },
     {
       c1: [-45, -45],
       c2: [-45, -45],
       haversineDistance: 0,
-      initialBearing: 0,
       midpoint: [-45.00000000000005, -45]
     },
     {
       c1: [-45, -45],
       c2: [45, -45],
       haversineDistance: 6671.695598673525,
-      initialBearing: 125.26438968275465,
       midpoint: [0, -54.735610317245346]
     },
     {
       c1: [45, -45],
       c2: [45, -45],
       haversineDistance: 0,
-      initialBearing: 0,
       midpoint: [45.00000000000005, -45]
     }
   ];
@@ -129,19 +114,6 @@ describe('ol.Sphere', function() {
 
   });
 
-  describe('initialBearing', function() {
-
-    it('results match Chris Veness\'s reference implementation', function() {
-      var e, i;
-      for (i = 0; i < expected.length; ++i) {
-        e = expected[i];
-        expect(sphere.initialBearing(e.c1, e.c2)).to.roughlyEqual(
-            e.initialBearing, 1e-9);
-      }
-    });
-
-  });
-
   describe('interpolate', function() {
 
     it('results match at the start, midpoint, and end', function() {