Refactored 'Providers' into library 'vmanip-core', where they are ren…

…amed to 'Layers'. Layers are based on Backbone.Models, so the code had to be adjusted to convert from Backbone.Models to plain-old Javascript objects where necessary.

Gruntfile.js

@@ -13,12 +13,7 @@ module.exports = function(grunt) {
 			dist: {
 				files: {
 					'dist/<%= pkg.name %>.debug.js': ['src/viewer.js', 'src/**/*.js'],
-					'dist/<%= pkg.name %>-deps.debug.js': [
-						'deps/*.js',
-						'vendor/underscore/underscore.js',
-						'vendor/backbone/backbone.js',
-						'vendor/backbone.wreqr/lib/backbone.wreqr.js'
-					]
+					'dist/<%= pkg.name %>-deps.debug.js': ['deps/*.js']
 				}
 			}
 		},

bower.json

@@ -11,12 +11,9 @@
   "ignore": [
     "**/.*",
     "node_modules",
-    "bower_components",
+    "vendor",
     "test",
     "tests"
   ],
-  "dependencies": {
-    "backbone": "~1.1.1",
-    "backbone.wreqr": "~1.0.0"
-  }
+  "dependencies": {}
 }

src/lib/Model_DemWithOverlays.js

@@ -33,6 +33,10 @@ RBV.Models.DemWithOverlays.prototype.setDemProvider = function(provider) {
  */
 RBV.Models.DemWithOverlays.prototype.addImageryProvider = function(provider) {
     this.imageryProviders.push(provider);
+
+    // this.listenTo(provider, 'opacity:change', function(model, value) {
+    //     console.log('Provider "' + model.id + '" changed opacity to "' + value + '"');
+    // });
 };
 
 /**
@@ -71,9 +75,17 @@ RBV.Models.DemWithOverlays.prototype.createModel = function(root, cubeSizeX, cub
     this.root = root;
     this.createPlaceHolder();
 
+    // Convert the original Backbone.Model layers to 'plain-old-data' javascript objects:
+    var podImageryProviders = [];
+    _.each(this.imageryProviders, function(layer, idx) {
+        podImageryProviders.push(layer.toJSON());
+    });
+
+    var podDemProvider = this.demRequest.toJSON();
+
     EarthServerGenericClient.getDEMWithOverlays(this, {
-        dem: this.demRequest,
-        imagery: this.imageryProviders,
+        dem: podDemProvider,
+        imagery: podImageryProviders,
         bbox: bbox,
         timespan: this.timespan,
         resX: this.XResolution,