Add ol.geom.{de,in}flateCoordinatess

src/ol/geom/geometry.js

@@ -264,6 +264,30 @@ ol.geom.deflateCoordinates =
 };
 
 
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<Array.<ol.Coordinate>>} coordinatess Coordinatess.
+ * @param {number} stride Stride.
+ * @param {Array.<number>=} opt_ends Ends.
+ * @return {Array.<number>} Ends.
+ */
+ol.geom.deflateCoordinatess =
+    function(flatCoordinates, offset, coordinatess, stride, opt_ends) {
+  var ends = goog.isDef(opt_ends) ? opt_ends : [];
+  var i = 0;
+  var j, jj;
+  for (j = 0, jj = coordinatess.length; j < jj; ++j) {
+    var end = ol.geom.deflateCoordinates(
+        flatCoordinates, offset, coordinatess[j], stride);
+    ends[i++] = end;
+    offset = end;
+  }
+  ends.length = i;
+  return ends;
+};
+
+
 /**
  * @param {Array.<number>} flatCoordinates Flat coordinates.
  * @param {number} offset Offset.
@@ -283,3 +307,27 @@ ol.geom.inflateCoordinates =
   coordinates.length = i;
   return coordinates;
 };
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array.<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @param {Array.<Array.<ol.Coordinate>>=} opt_coordinatess Coordinatess.
+ * @return {Array.<Array.<ol.Coordinate>>} Coordinatess.
+ */
+ol.geom.inflateCoordinatess =
+    function(flatCoordinates, offset, ends, stride, opt_coordinatess) {
+  var coordinatess = goog.isDef(opt_coordinatess) ? opt_coordinatess : [];
+  var i = 0;
+  var j, jj;
+  for (j = 0, jj = ends.length; j < jj; ++j) {
+    var end = ends[j];
+    coordinatess[i++] = ol.geom.inflateCoordinates(
+        flatCoordinates, offset, end, stride, coordinatess[i]);
+    offset = end;
+  }
+  coordinatess.length = i;
+  return coordinatess;
+};

test/spec/ol/geom/geom.test.js

@@ -19,6 +19,21 @@ describe('ol.geom', function() {
 
   });
 
+  describe('ol.geom.deflateCoordinatess', function() {
+
+    var flatCoordinates;
+    beforeEach(function() {
+      flatCoordinates = [];
+    });
+
+    it('flattens arrays of coordinates', function() {
+      var ends = ol.geom.deflateCoordinatess(flatCoordinates, 0,
+          [[[1, 2], [3, 4]], [[5, 6], [7, 8]]], 2);
+      expect(ends).to.eql([4, 8]);
+      expect(flatCoordinates).to.eql([1, 2, 3, 4, 5, 6, 7, 8]);
+    });
+  });
+
   describe('ol.geom.inflateCoordinates', function() {
 
     it('inflates coordinates', function() {
@@ -28,4 +43,13 @@ describe('ol.geom', function() {
 
   });
 
+  describe('ol.geom.inflateCoordinatess', function() {
+
+    it('inflates arrays of coordinates', function() {
+      var coordinatess = ol.geom.inflateCoordinatess([1, 2, 3, 4, 5, 6, 7, 8],
+          0, [4, 8], 2);
+      expect(coordinatess).to.eql([[[1, 2], [3, 4]], [[5, 6], [7, 8]]]);
+    });
+  });
+
 });