"use strict";
define(["backbone"], function (Backbone) {
/**
* @class GeoScale
* @classdesc The GeoScale model stores the relative scale of the map in
* meters vs. pixels. This can be used to convert between the two.
* @classcategory Models/Maps
* @name GeoScale
* @since 2.27.0
* @extends Backbone.Model
*/
var GeoScale = Backbone.Model.extend(
/** @lends GeoScale.prototype */ {
/**
* The type of model this is.
* @type {String}
*/
type: "GeoScale",
/**
* Overrides the default Backbone.Model.defaults() function to specify
* default attributes for the GeoScale.
*/
defaults: function () {
return {
pixel: 1,
meters: null,
};
},
// /**
// * Run when a new GeoScale is created.
// * @param {Object} attrs - An object specifying configuration options
// * for the GeoScale. If any config option is not specified, the default will be
// * used instead (see {@link GeoScale#defaults}).
// */
// initialize: function (attrs, options) {
// try {
// // ...
// } catch (e) {
// console.log("Error initializing a GeoScale model", e);
// }
// },
/**
* Validate the model attributes
* @param {Object} attrs - The model's attributes
*/
validate: function (attrs, options) {
if (attrs.pixel < 0) {
return "Invalid pixel scale. Must be greater than 0.";
}
if (attrs.meters < 0) {
return "Invalid meters scale. Must be greater than 0.";
}
},
}
);
return GeoScale;
});