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/* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
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* text of the license. */
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/*********************
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* *
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* PIXEL *
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* *
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*********************/
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/**
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* @class
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*
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* This class represents a screen coordinate, in x and y coordinates
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*/
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OpenLayers.Pixel = Class.create();
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OpenLayers.Pixel.prototype = {
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/** @type float */
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x: 0.0,
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/** @type float */
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y: 0.0,
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/**
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* @constructor
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*
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* @param {float} x
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* @param {float} y
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*/
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initialize: function(x, y) {
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this.x = x;
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this.y = y;
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},
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/**
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* @return string representation of Pixel. ex: "x=200.4,y=242.2"
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* @type str
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*/
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toString:function() {
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return ("x=" + this.x + ",y=" + this.y);
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},
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/**
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* @type OpenLayers.Pixel
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*/
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clone:function() {
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return new OpenLayers.Pixel(this.x, this.y);
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},
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/**
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* @param {OpenLayers.Pixel} px
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*
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* @return whether or not the point passed in as parameter is equal to this
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* note that if px passed in is null, returns false
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* @type bool
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*/
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equals:function(px) {
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var equals = false;
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if (px != null) {
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equals = ((this.x == px.x && this.y == px.y) ||
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(isNaN(this.x) && isNaN(this.y) && isNaN(px.x) && isNaN(px.y)));
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}
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return equals;
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},
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/**
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* @param {int} x
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* @param {int} y
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*
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* @return a new Pixel with this pixel's x&y augmented by the
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* values passed in.
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* @type OpenLayers.Pixel
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*/
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add:function(x, y) {
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return new OpenLayers.Pixel(this.x + x, this.y + y);
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},
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/**
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* @param {OpenLayers.Pixel} px
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*
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* @return a new Pixel with this pixel's x&y augmented by the
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* x&y values of the pixel passed in.
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* @type OpenLayers.Pixel
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*/
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offset:function(px) {
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return this.add(px.x, px.y);
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},
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/** @final @type str */
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CLASS_NAME: "OpenLayers.Pixel"
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};
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/*********************
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* *
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* SIZE *
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* *
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*********************/
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/**
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* @class
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*
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* This class represents a width and height pair
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*/
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OpenLayers.Size = Class.create();
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OpenLayers.Size.prototype = {
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/** @type float */
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w: 0.0,
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/** @type float */
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h: 0.0,
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/**
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* @constructor
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*
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* @param {float} w
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* @param {float} h
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*/
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initialize: function(w, h) {
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this.w = w;
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this.h = h;
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},
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/**
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* @return String representation of OpenLayers.Size object.
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* (ex. <i>"w=55,h=66"</i>)
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* @type String
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*/
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toString:function() {
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return ("w=" + this.w + ",h=" + this.h);
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},
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/**
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* @return New OpenLayers.Size object with the same w and h values
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* @type OpenLayers.Size
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*/
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clone:function() {
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return new OpenLayers.Size(this.w, this.h);
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},
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/**
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* @param {OpenLayers.Size} sz
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* @returns Boolean value indicating whether the passed-in OpenLayers.Size
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* object has the same w and h components as this
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* note that if sz passed in is null, returns false
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*
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* @type bool
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*/
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equals:function(sz) {
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var equals = false;
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if (sz != null) {
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equals = ((this.w == sz.w && this.h == sz.h) ||
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(isNaN(this.w) && isNaN(this.h) && isNaN(sz.w) && isNaN(sz.h)));
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}
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return equals;
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Size"
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};
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/*********************
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* *
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* LONLAT *
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* *
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*********************/
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/**
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* @class
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*
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* This class represents a longitude and latitude pair
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*/
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OpenLayers.LonLat = Class.create();
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OpenLayers.LonLat.prototype = {
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/** @type float */
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lon: 0.0,
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/** @type float */
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lat: 0.0,
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/**
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* @constructor
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*
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* @param {float} lon
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* @param {float} lat
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*/
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initialize: function(lon, lat) {
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this.lon = lon;
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this.lat = lat;
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},
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/**
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* @return String representation of OpenLayers.LonLat object.
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* (ex. <i>"lon=5,lat=42"</i>)
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* @type String
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*/
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toString:function() {
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return ("lon=" + this.lon + ",lat=" + this.lat);
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},
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/**
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* @return Shortened String representation of OpenLayers.LonLat object.
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* (ex. <i>"5, 42"</i>)
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* @type String
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*/
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toShortString:function() {
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return (this.lon + ", " + this.lat);
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},
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/**
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* @return New OpenLayers.LonLat object with the same lon and lat values
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* @type OpenLayers.LonLat
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*/
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clone:function() {
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return new OpenLayers.LonLat(this.lon, this.lat);
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},
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/**
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* @param {float} lon
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* @param {float} lat
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*
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* @return A new OpenLayers.LonLat object with the lon and lat passed-in
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* added to this's.
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* @type OpenLayers.LonLat
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*/
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add:function(lon, lat) {
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return new OpenLayers.LonLat(this.lon + lon, this.lat + lat);
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},
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/**
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* @param {OpenLayers.LonLat} ll
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* @returns Boolean value indicating whether the passed-in OpenLayers.LonLat
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* object has the same lon and lat components as this
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* note that if ll passed in is null, returns false
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*
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* @type bool
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*/
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equals:function(ll) {
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var equals = false;
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if (ll != null) {
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equals = ((this.lon == ll.lon && this.lat == ll.lat) ||
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(isNaN(this.lon) && isNaN(this.lat) && isNaN(ll.lon) && isNaN(ll.lat)));
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}
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return equals;
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.LonLat"
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};
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/** Alternative constructor that builds a new OpenLayers.LonLat from a
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* parameter string
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*
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* @constructor
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*
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* @param {String} str Comma-separated Lon,Lat coordinate string.
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* (ex. <i>"5,40"</i>)
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*
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* @returns New OpenLayers.LonLat object built from the passed-in String.
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* @type OpenLayers.LonLat
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*/
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OpenLayers.LonLat.fromString = function(str) {
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var pair = str.split(",");
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return new OpenLayers.LonLat(parseFloat(pair[0]),
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parseFloat(pair[1]));
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};
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/*********************
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* *
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* BOUNDS *
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* *
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*********************/
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/**
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* @class
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*
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* This class represents a bounding box.
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* Data stored as left, bottom, right, top floats
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*/
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OpenLayers.Bounds = Class.create();
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OpenLayers.Bounds.prototype = {
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/** @type float */
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left: 0.0,
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/** @type float */
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bottom: 0.0,
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/** @type float */
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right: 0.0,
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/** @type float */
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top: 0.0,
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/**
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* @constructor
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*
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* @param {float} left
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* @param {float} bottom
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* @param {float} right
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* @param {float} top
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*
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*/
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initialize: function(left, bottom, right, top) {
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this.left = left;
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this.bottom = bottom;
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this.right = right;
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this.top = top;
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},
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/**
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* @returns A fresh copy of the bounds
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* @type OpenLayers.Bounds
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*/
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clone:function() {
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return new OpenLayers.Bounds(this.left, this.bottom,
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this.right, this.top);
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},
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/**
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* @param {OpenLayers.Bounds} bounds
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* @returns Boolean value indicating whether the passed-in OpenLayers.Bounds
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* object has the same left, right, top, bottom components as this
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* note that if bounds passed in is null, returns false
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*
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* @type bool
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*/
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equals:function(bounds) {
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var equals = false;
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if (bounds != null) {
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equals = ((this.left == bounds.left) &&
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(this.right == bounds.right) &&
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(this.top == bounds.top) &&
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(this.bottom == bounds.bottom));
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}
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return equals;
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},
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352
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/**
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* @return String representation of OpenLayers.Bounds object.
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* (ex.<i>"left-bottom=(5,42) right-top=(10,45)"</i>)
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* @type String
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*/
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toString:function(){
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return ( "left-bottom=(" + this.left + "," + this.bottom + ")"
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+ " right-top=(" + this.right + "," + this.top + ")" );
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},
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361
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362
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/**
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* @return Simple String representation of OpenLayers.Bounds object.
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* (ex. <i>"5,42,10,45"</i>)
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365
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* @type String
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*/
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toBBOX:function() {
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368
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return (this.left + "," + this.bottom + ","
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+ this.right + "," + this.top);
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},
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372
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/**
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* @returns The width of the bounds
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* @type float
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*/
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getWidth:function() {
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return (this.right - this.left);
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},
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379
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380
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/**
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* @returns The height of the bounds
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382
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* @type float
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*/
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384
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getHeight:function() {
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385
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return (this.top - this.bottom);
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386
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},
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387
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388
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/**
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* @returns An OpenLayers.Size which represents the size of the box
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390
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* @type OpenLayers.Size
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391
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*/
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392
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getSize:function() {
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393
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return new OpenLayers.Size(this.getWidth(), this.getHeight());
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394
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},
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395
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396
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/**
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397
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* @returns An OpenLayers.Pixel which represents the center of the bounds
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398
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* @type OpenLayers.Pixel
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399
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*/
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400
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getCenterPixel:function() {
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401
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return new OpenLayers.Pixel( (this.left + this.right) / 2,
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402
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(this.bottom + this.top) / 2);
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403
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},
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404
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405
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/**
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406
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* @returns An OpenLayers.LonLat which represents the center of the bounds
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407
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* @type OpenLayers.LonLat
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408
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*/
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409
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getCenterLonLat:function() {
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410
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return new OpenLayers.LonLat( (this.left + this.right) / 2,
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411
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(this.bottom + this.top) / 2);
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412
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},
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413
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414
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/**
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415
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* @param {float} x
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416
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* @param {float} y
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417
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*
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418
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* @returns A new OpenLayers.Bounds whose coordinates are the same as this,
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419
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* but shifted by the passed-in x and y values
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420
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* @type OpenLayers.Bounds
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421
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*/
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422
|
add:function(x, y){
|
|
423
|
return new OpenLayers.Bounds(this.left + x, this.bottom + y,
|
|
424
|
this.right + x, this.top + y);
|
|
425
|
},
|
|
426
|
|
|
427
|
/**
|
|
428
|
* @param {float} x
|
|
429
|
* @param {float} y
|
|
430
|
* @param {Boolean} inclusive Whether or not to include the border.
|
|
431
|
* Default is true
|
|
432
|
*
|
|
433
|
* @return Whether or not the passed-in coordinates are within this bounds
|
|
434
|
* @type Boolean
|
|
435
|
*/
|
|
436
|
contains:function(x, y, inclusive) {
|
|
437
|
|
|
438
|
//set default
|
|
439
|
if (inclusive == null) {
|
|
440
|
inclusive = true;
|
|
441
|
}
|
|
442
|
|
|
443
|
var contains = false;
|
|
444
|
if (inclusive) {
|
|
445
|
contains = ((x >= this.left) && (x <= this.right) &&
|
|
446
|
(y >= this.bottom) && (y <= this.top));
|
|
447
|
} else {
|
|
448
|
contains = ((x > this.left) && (x < this.right) &&
|
|
449
|
(y > this.bottom) && (y < this.top));
|
|
450
|
}
|
|
451
|
return contains;
|
|
452
|
},
|
|
453
|
|
|
454
|
/**
|
|
455
|
* @param {OpenLayers.Bounds} bounds
|
|
456
|
* @param {Boolean} partial If true, only part of passed-in
|
|
457
|
* OpenLayers.Bounds needs be within this bounds.
|
|
458
|
* If false, the entire passed-in bounds must be
|
|
459
|
* within. Default is false
|
|
460
|
* @param {Boolean} inclusive Whether or not to include the border.
|
|
461
|
* Default is true
|
|
462
|
*
|
|
463
|
* @return Whether or not the passed-in OpenLayers.Bounds object is
|
|
464
|
* contained within this bounds.
|
|
465
|
* @type Boolean
|
|
466
|
*/
|
|
467
|
containsBounds:function(bounds, partial, inclusive) {
|
|
468
|
|
|
469
|
//set defaults
|
|
470
|
if (partial == null) {
|
|
471
|
partial = false;
|
|
472
|
}
|
|
473
|
if (inclusive == null) {
|
|
474
|
inclusive = true;
|
|
475
|
}
|
|
476
|
|
|
477
|
var inLeft;
|
|
478
|
var inTop;
|
|
479
|
var inRight;
|
|
480
|
var inBottom;
|
|
481
|
|
|
482
|
if (inclusive) {
|
|
483
|
inLeft = (bounds.left >= this.left) && (bounds.left <= this.right);
|
|
484
|
inTop = (bounds.top >= this.bottom) && (bounds.top <= this.top);
|
|
485
|
inRight= (bounds.right >= this.left) && (bounds.right <= this.right);
|
|
486
|
inBottom = (bounds.bottom >= this.bottom) && (bounds.bottom <= this.top);
|
|
487
|
} else {
|
|
488
|
inLeft = (bounds.left > this.left) && (bounds.left < this.right);
|
|
489
|
inTop = (bounds.top > this.bottom) && (bounds.top < this.top);
|
|
490
|
inRight= (bounds.right > this.left) && (bounds.right < this.right);
|
|
491
|
inBottom = (bounds.bottom > this.bottom) && (bounds.bottom < this.top);
|
|
492
|
}
|
|
493
|
|
|
494
|
return (partial) ? (inTop || inBottom) && (inLeft || inRight )
|
|
495
|
: (inTop && inLeft && inBottom && inRight);
|
|
496
|
},
|
|
497
|
|
|
498
|
/**
|
|
499
|
* @param {OpenLayers.LonLat} lonlat
|
|
500
|
*
|
|
501
|
* @returns The quadrant ("br" "tr" "tl" "bl") of the bounds in which
|
|
502
|
* the coordinate lies.
|
|
503
|
* @type String
|
|
504
|
*/
|
|
505
|
determineQuadrant: function(lonlat) {
|
|
506
|
|
|
507
|
var quadrant = "";
|
|
508
|
var center = this.getCenterLonLat();
|
|
509
|
|
|
510
|
quadrant += (lonlat.lat < center.lat) ? "b" : "t";
|
|
511
|
quadrant += (lonlat.lon < center.lon) ? "l" : "r";
|
|
512
|
|
|
513
|
return quadrant;
|
|
514
|
},
|
|
515
|
|
|
516
|
/** @final @type String */
|
|
517
|
CLASS_NAME: "OpenLayers.Bounds"
|
|
518
|
};
|
|
519
|
|
|
520
|
/** Alternative constructor that builds a new OpenLayers.Bounds from a
|
|
521
|
* parameter string
|
|
522
|
*
|
|
523
|
* @constructor
|
|
524
|
*
|
|
525
|
* @param {String} str Comma-separated bounds string. (ex. <i>"5,42,10,45"</i>)
|
|
526
|
*
|
|
527
|
* @returns New OpenLayers.Bounds object built from the passed-in String.
|
|
528
|
* @type OpenLayers.Bounds
|
|
529
|
*/
|
|
530
|
OpenLayers.Bounds.fromString = function(str) {
|
|
531
|
var bounds = str.split(",");
|
|
532
|
return OpenLayers.Bounds.fromArray(bounds);
|
|
533
|
};
|
|
534
|
|
|
535
|
/** Alternative constructor that builds a new OpenLayers.Bounds
|
|
536
|
* from an array
|
|
537
|
*
|
|
538
|
* @constructor
|
|
539
|
*
|
|
540
|
* @param {Array} bbox Array of bounds values (ex. <i>[5,42,10,45]</i>)
|
|
541
|
*
|
|
542
|
* @returns New OpenLayers.Bounds object built from the passed-in Array.
|
|
543
|
* @type OpenLayers.Bounds
|
|
544
|
*/
|
|
545
|
OpenLayers.Bounds.fromArray = function(bbox) {
|
|
546
|
return new OpenLayers.Bounds(parseFloat(bbox[0]),
|
|
547
|
parseFloat(bbox[1]),
|
|
548
|
parseFloat(bbox[2]),
|
|
549
|
parseFloat(bbox[3]));
|
|
550
|
};
|
|
551
|
|
|
552
|
/** Alternative constructor that builds a new OpenLayers.Bounds
|
|
553
|
* from an OpenLayers.Size
|
|
554
|
*
|
|
555
|
* @constructor
|
|
556
|
*
|
|
557
|
* @param {OpenLayers.Size} size
|
|
558
|
*
|
|
559
|
* @returns New OpenLayers.Bounds object built with top and left set to 0 and
|
|
560
|
* bottom right taken from the passed-in OpenLayers.Size.
|
|
561
|
* @type OpenLayers.Bounds
|
|
562
|
*/
|
|
563
|
OpenLayers.Bounds.fromSize = function(size) {
|
|
564
|
return new OpenLayers.Bounds(0,
|
|
565
|
size.h,
|
|
566
|
size.w,
|
|
567
|
0);
|
|
568
|
};
|
|
569
|
/**
|
|
570
|
* @param {String} quadrant
|
|
571
|
*
|
|
572
|
* @returns The opposing quadrant ("br" "tr" "tl" "bl"). For Example, if
|
|
573
|
* you pass in "bl" it returns "tr", if you pass in "br" it
|
|
574
|
* returns "tl", etc.
|
|
575
|
* @type String
|
|
576
|
*/
|
|
577
|
OpenLayers.Bounds.oppositeQuadrant = function(quadrant) {
|
|
578
|
var opp = "";
|
|
579
|
|
|
580
|
opp += (quadrant.charAt(0) == 't') ? 'b' : 't';
|
|
581
|
opp += (quadrant.charAt(1) == 'l') ? 'r' : 'l';
|
|
582
|
|
|
583
|
return opp;
|
|
584
|
};
|
|
585
|
|
|
586
|
|
|
587
|
|
|
588
|
|
|
589
|
/*********************
|
|
590
|
* *
|
|
591
|
* STRING *
|
|
592
|
* *
|
|
593
|
*********************/
|
|
594
|
|
|
595
|
|
|
596
|
|
|
597
|
/**
|
|
598
|
* @param {String} sStart
|
|
599
|
*
|
|
600
|
* @returns Whether or not this string starts with the string passed in.
|
|
601
|
* @type Boolean
|
|
602
|
*/
|
|
603
|
String.prototype.startsWith = function(sStart){
|
|
604
|
return (this.substr(0,sStart.length) == sStart);
|
|
605
|
};
|
|
606
|
|
|
607
|
/**
|
|
608
|
* @param {String} str
|
|
609
|
*
|
|
610
|
* @returns Whether or not this string contains with the string passed in.
|
|
611
|
* @type Boolean
|
|
612
|
*/
|
|
613
|
String.prototype.contains = function(str){
|
|
614
|
return (this.indexOf(str) != -1);
|
|
615
|
};
|
|
616
|
|
|
617
|
/**
|
|
618
|
* @returns A trimmed version of the string - all leading and
|
|
619
|
* trailing spaces removed
|
|
620
|
* @type String
|
|
621
|
*/
|
|
622
|
String.prototype.trim = function() {
|
|
623
|
|
|
624
|
var b = 0;
|
|
625
|
while(this.substr(b,1) == " ") {
|
|
626
|
b++;
|
|
627
|
}
|
|
628
|
|
|
629
|
var e = this.length - 1;
|
|
630
|
while(this.substr(e,1) == " ") {
|
|
631
|
e--;
|
|
632
|
}
|
|
633
|
|
|
634
|
return this.substring(b, e+1);
|
|
635
|
};
|
|
636
|
|
|
637
|
|
|
638
|
|
|
639
|
|
|
640
|
/*********************
|
|
641
|
* *
|
|
642
|
* ARRAY *
|
|
643
|
* *
|
|
644
|
*********************/
|
|
645
|
|
|
646
|
|
|
647
|
|
|
648
|
/** Remove an object from an array. Iterates through the array
|
|
649
|
* to find the item, then removes it.
|
|
650
|
*
|
|
651
|
* @param {Object} item
|
|
652
|
*
|
|
653
|
* @returns A reference to the array
|
|
654
|
* @type Array
|
|
655
|
*/
|
|
656
|
Array.prototype.remove = function(item) {
|
|
657
|
for(var i=0; i < this.length; i++) {
|
|
658
|
if(this[i] == item) {
|
|
659
|
this.splice(i,1);
|
|
660
|
//break;more than once??
|
|
661
|
}
|
|
662
|
}
|
|
663
|
return this;
|
|
664
|
}
|
|
665
|
|
|
666
|
/**
|
|
667
|
* @returns A fresh copy of the array
|
|
668
|
* @type Array
|
|
669
|
*/
|
|
670
|
Array.prototype.clone = function() {
|
|
671
|
var clone = new Array();
|
|
672
|
for (var i = 0; i < this.length; i++) {
|
|
673
|
clone[i] = this[i];
|
|
674
|
}
|
|
675
|
return clone;
|
|
676
|
};
|
|
677
|
|
|
678
|
/**
|
|
679
|
*/
|
|
680
|
Array.prototype.clear = function() {
|
|
681
|
this.length = 0;
|
|
682
|
};
|
|
683
|
|
|
684
|
|
|
685
|
/*********************
|
|
686
|
* *
|
|
687
|
* NUMBER *
|
|
688
|
* *
|
|
689
|
*********************/
|
|
690
|
|
|
691
|
|
|
692
|
|
|
693
|
/** NOTE: Works only with integer values does *not* work with floats!
|
|
694
|
*
|
|
695
|
* @param {int} sig
|
|
696
|
*
|
|
697
|
* @returns The number, rounded to the specified number of significant digits.
|
|
698
|
* If null, 0, or negaive value passed in, returns 0
|
|
699
|
* @type int
|
|
700
|
*/
|
|
701
|
Number.prototype.limitSigDigs = function(sig) {
|
|
702
|
var number = (sig > 0) ? this.toString() : 0;
|
|
703
|
if (sig < number.length) {
|
|
704
|
var exp = number.length - sig;
|
|
705
|
number = Math.round( this / Math.pow(10, exp)) * Math.pow(10, exp);
|
|
706
|
}
|
|
707
|
return parseInt(number);
|
|
708
|
}
|