destination = destination || {};

if (source) {

for (var property in source) {

var value = source[property];

if (value !== undefined) {

destination[property] = value;

}

}

/**

/*

var sourceIsEvt = typeof window.Event === "function"

&& source instanceof window.Event;

if (!sourceIsEvt

&& source.hasOwnProperty && source.hasOwnProperty("toString")) {

destination.toString = source.toString;

}

}

return destination;

des = des || {};

var v;

if (soc) {

for (var p in des) {

v = soc[p];

if (typeof v !== 'undefined') {

des[p] = v;

}

}

}

obj = obj || {};

for (var p in obj) {

if (obj.hasOwnProperty(p)) {

if (typeof obj[p] === "object" && obj[p] instanceof Array) {

for (var i in obj[p]) {

if (obj[p][i].destroy) {

obj[p][i].destroy();

}

}

obj[p].length = 0;

} else if (typeof obj[p] === "object" && obj[p] instanceof Object) {

if (obj[p].destroy) {

obj[p].destroy();

}

}

obj[p] = null;

}

}

var elements = [];

for (var i = 0, len = arguments.length; i < len; i++) {

var element = arguments[i];

if (typeof element === 'string') {

element = document.getElementById(element);

}

if (arguments.length === 1) {

return element;

}

elements.push(element);

}

return elements;

for (var i = array.length - 1; i >= 0; i--) {

if (array[i] === item) {

array.splice(i, 1);

//break;more than once??

}

}

return array;

if (array == null) {

return -1;

} else {

// use the build-in function if available.

if (typeof array.indexOf === "function") {

return array.indexOf(obj);

} else {

for (var i = 0, len = array.length; i < len; i++) {

if (array[i] === obj) {

return i;

}

}

return -1;

}

}

border, overflow, opacity) {

if (id) {

element.id = id;

}

if (px) {

element.style.left = px.x + "px";

element.style.top = px.y + "px";

}

if (sz) {

element.style.width = sz.w + "px";

element.style.height = sz.h + "px";

}

if (position) {

element.style.position = position;

}

if (border) {

element.style.border = border;

}

if (overflow) {

element.style.overflow = overflow;

}

if (parseFloat(opacity) >= 0.0 && parseFloat(opacity) < 1.0) {

element.style.filter = 'alpha(opacity=' + (opacity * 100) + ')';

element.style.opacity = opacity;

} else if (parseFloat(opacity) === 1.0) {

element.style.filter = '';

element.style.opacity = '';

}

to = to || {};

/*

var fromIsEvt = typeof window.Event === "function"

&& from instanceof window.Event;

for (var key in from) {

if (to[key] === undefined ||

(!fromIsEvt && from.hasOwnProperty

&& from.hasOwnProperty(key) && !to.hasOwnProperty(key))) {

to[key] = from[key];

}

}

/**

if (!fromIsEvt && from && from.hasOwnProperty

&& from.hasOwnProperty('toString') && !to.hasOwnProperty('toString')) {

to.toString = from.toString;

}

return to;

var paramsArray = [];

for (var key in params) {

var value = params[key];

if ((value != null) && (typeof value !== 'function')) {

var encodedValue;

if (typeof value === 'object' && value.constructor === Array) {

/* value is an array; encode items and separate with "," */

var encodedItemArray = [];

var item;

for (var itemIndex = 0, len = value.length; itemIndex < len; itemIndex++) {

item = value[itemIndex];

encodedItemArray.push(encodeURIComponent(

(item === null || item === undefined) ? "" : item)

);

}

encodedValue = encodedItemArray.join(",");

} else {

/* value is a string; simply encode */

encodedValue = encodeURIComponent(value);

}

paramsArray.push(encodeURIComponent(key) + "=" + encodedValue);

}

}

return paramsArray.join("&");

var newUrl = url;

if (paramStr) {

var parts = (url + " ").split(/[?&]/);

newUrl += (parts.pop() === " " ?

paramStr :

parts.length ? "&" + paramStr : "?" + paramStr);

}

return newUrl;

if (precision == null) {

precision = SuperMap.Util.DEFAULT_PRECISION;

}

if (typeof number !== "number") {

number = parseFloat(number);

}

return precision === 0 ? number :

parseFloat(number.toPrecision(precision));

// if no url specified, take it from the location bar

url = (url === null || url === undefined) ? window.location.href : url;

//parse out parameters portion of url string

var paramsString = "";

if (SuperMap.String.contains(url, '?')) {

var start = url.indexOf('?') + 1;

var end = SuperMap.String.contains(url, "#") ?

url.indexOf('#') : url.length;

paramsString = url.substring(start, end);

}

var parameters = {};

var pairs = paramsString.split(/[&;]/);

for (var i = 0, len = pairs.length; i < len; ++i) {

var keyValue = pairs[i].split('=');

if (keyValue[0]) {

var key = keyValue[0];

try {

key = decodeURIComponent(key);

} catch (err) {

key = unescape(key);

}

// being liberal by replacing "+" with " "

var value = (keyValue[1] || '').replace(/\+/g, " ");

try {

value = decodeURIComponent(value);

} catch (err) {

value = unescape(value);

}

// follow OGC convention of comma delimited values

value = value.split(",");

//if there's only one value, do not return as array

if (value.length == 1) {

value = value[0];

}

parameters[key] = value;

}

}

return parameters;

if (prefix == null) {

prefix = "id_";

}

SuperMap.Util.lastSeqID += 1;

return prefix + SuperMap.Util.lastSeqID;

var resolution;

if (scale) {

if (units == null) {

units = "degrees";

}

var normScale = SuperMap.Util.normalizeScale(scale);

resolution = 1 / (normScale * SuperMap.INCHES_PER_UNIT[units]

* SuperMap.DOTS_PER_INCH);

}

return resolution;

if (units == null) {

units = "degrees";

}

var scale = resolution * SuperMap.INCHES_PER_UNIT[units] *

SuperMap.DOTS_PER_INCH;

return scale;

if (!url) {

return true;

}

var index = url.indexOf("//");

var documentUrl = document.location.toString();

var documentIndex = documentUrl.indexOf("//");

if (index === -1) {

return true;

} else {

var protocol;

var substring = protocol = url.substring(0, index);

var documentSubString = documentUrl.substring(documentIndex + 2);

documentIndex = documentSubString.indexOf("/");

var documentPortIndex = documentSubString.indexOf(":");

var documentDomainWithPort = documentSubString.substring(0, documentIndex);

//var documentPort;

var documentprotocol = document.location.protocol;

if (documentPortIndex !== -1) {

// documentPort = +documentSubString.substring(documentPortIndex, documentIndex);

} else {

documentDomainWithPort += ':' + (documentprotocol.toLowerCase() === 'http:' ? 80 : 443);

}

if (documentprotocol.toLowerCase() !== substring.toLowerCase()) {

return false;

}

substring = url.substring(index + 2);

var portIndex = substring.indexOf(":");

index = substring.indexOf("/");

var domainWithPort = substring.substring(0, index);

var domain;

if (portIndex !== -1) {

domain = substring.substring(0, portIndex);

} else {

domain = substring.substring(0, index);

domainWithPort += ':' + (protocol.toLowerCase() === 'http:' ? 80 : 443);

}

var documentDomain = document.domain;

if (domain === documentDomain && domainWithPort === documentDomainWithPort) {

return true;

}

}

return false;

//10000 是 0.1毫米与米的转换。DPI的计算公式：Viewer / DPI * 0.0254 * 10000 = ViewBounds * scale ，公式中的10000是为了提高计算结果的精度，以下出现的ratio皆为如此。

if (!viewBounds || !viewer || !scale) {

return;

}

var ratio = 10000,

rvbWidth = viewBounds.getWidth(),

rvbHeight = viewBounds.getHeight(),

rvWidth = viewer.w,

rvHeight = viewer.h;

//用户自定义地图的Options时，若未指定该参数的值，则系统默认为6378137米，即WGS84参考系的椭球体长半轴。

datumAxis = datumAxis || 6378137;

coordUnit = coordUnit || "degrees";

var dpi;

if (coordUnit.toLowerCase() === "degree" || coordUnit.toLowerCase() === "degrees" || coordUnit.toLowerCase() === "dd") {

let num1 = rvbWidth / rvWidth,

num2 = rvbHeight / rvHeight,

resolution = num1 > num2 ? num1 : num2;

dpi = 0.0254 * ratio / resolution / scale / ((Math.PI * 2 * datumAxis) / 360) / ratio;

} else {

let resolution = rvbWidth / rvWidth;

dpi = 0.0254 * ratio / resolution / scale / ratio;

}

return dpi;

var objInn = obj;

if (objInn == null) {

return null;

}

switch (objInn.constructor) {

case String:

//s = "'" + str.replace(/(["\\])/g, "\\$1") + "'"; string含有单引号出错

objInn = '"' + objInn.replace(/(["\\])/g, '\\$1') + '"';

objInn = objInn.replace(/\n/g, "\\n");

objInn = objInn.replace(/\r/g, "\\r");

objInn = objInn.replace("<", "&lt;");

objInn = objInn.replace(">", "&gt;");

objInn = objInn.replace(/%/g, "%25");

objInn = objInn.replace(/&/g, "%26");

return objInn;

case Array:

var arr = [];

for (var i = 0, len = objInn.length; i < len; i++) {

arr.push(SuperMap.Util.toJSON(objInn[i]));