terriajs/lib/Core/hashEntity.js

Geospatial data visualization platform.

'use strict';

var hashFromString = require('./hashFromString');
var propertyGetTimeValues = require('./propertyGetTimeValues');
var defaultValue = require('terriajs-cesium/Source/Core/defaultValue');

/**
 * Hashes a Cesium {@link Entity} (used by us for features) by stringifying its properties and name.
 *
 * @param feature The feature to hash
 * @param clock A clock that will be used to resolve the property values.
 * @returns {Number} the hash, as an integer.
 */
module.exports = function hashEntity(feature, clock) {
    return hashFromString(JSON.stringify(propertyGetTimeValues(defaultValue(feature.properties, {}), clock)) + feature.name);
};