/* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for
* full list of contributors). Published under the Clear BSD license.
* See http://svn.openlayers.org/trunk/openlayers/license.txt for the
* full text of the license. */
/**
* @requires OpenLayers/Layer/EventPane.js
* @requires OpenLayers/Layer/FixedZoomLevels.js
*/
/**
* Class: OpenLayers.Layer.MultiMap
* Note that MultiMap does not fully support the sphericalMercator
* option. See Ticket #953 for more details.
*
* Inherits from:
* - <OpenLayers.Layer.EventPane>
* - <OpenLayers.Layer.FixedZoomLevels>
*/
OpenLayers.Layer.MultiMap = OpenLayers.Class(
OpenLayers.Layer.EventPane, OpenLayers.Layer.FixedZoomLevels, {
/**
* Constant: MIN_ZOOM_LEVEL
* {Integer} 1
*/
MIN_ZOOM_LEVEL: 1,
/**
* Constant: MAX_ZOOM_LEVEL
* {Integer} 17
*/
MAX_ZOOM_LEVEL: 17,
/**
* Constant: RESOLUTIONS
* {Array(Float)} Hardcode these resolutions so that they are more closely
* tied with the standard wms projection
*/
RESOLUTIONS: [
9,
1.40625,
0.703125,
0.3515625,
0.17578125,
0.087890625,
0.0439453125,
0.02197265625,
0.010986328125,
0.0054931640625,
0.00274658203125,
0.001373291015625,
0.0006866455078125,
0.00034332275390625,
0.000171661376953125,
0.0000858306884765625,
0.00004291534423828125
],
/**
* APIProperty: type
* {?}
*/
type: null,
/**
* Constructor: OpenLayers.Layer.MultiMap
*
* Parameters:
* name - {String}
* options - {Object}
*/
initialize: function(name, options) {
OpenLayers.Layer.EventPane.prototype.initialize.apply(this, arguments);
OpenLayers.Layer.FixedZoomLevels.prototype.initialize.apply(this,
arguments);
if (this.sphericalMercator) {
OpenLayers.Util.extend(this, OpenLayers.Layer.SphericalMercator);
this.initMercatorParameters();
this.RESOLUTIONS.unshift(10);
}
},
/**
* Method: loadMapObject
*/
loadMapObject:function() {
try { //crash proofing
this.mapObject = new MultimapViewer(this.div);
} catch (e) { }
},
/**
* APIMethod: getWarningHTML
*
* Returns:
* {String} String with information on why layer is broken, how to get
* it working.
*/
getWarningHTML:function() {
return OpenLayers.i18n(
"getLayerWarning", {'layerType':"MM", 'layerLib':"MultiMap"}
);
},
/************************************
* *
* MapObject Interface Controls *
* *
************************************/
// Get&Set Center, Zoom
/**
* APIMethod: setMapObjectCenter
* Set the mapObject to the specified center and zoom
*
* Parameters:
* center - {Object} MapObject LonLat format
* zoom - {int} MapObject zoom format
*/
setMapObjectCenter: function(center, zoom) {
this.mapObject.goToPosition(center, zoom);
},
/**
* APIMethod: getMapObjectCenter
*
* Returns:
* {Object} The mapObject's current center in Map Object format
*/
getMapObjectCenter: function() {
return this.mapObject.getCurrentPosition();
},
/**
* APIMethod: getMapObjectZoom
*
* Returns:
* {Integer} The mapObject's current zoom, in Map Object format
*/
getMapObjectZoom: function() {
return this.mapObject.getZoomFactor();
},
// LonLat - Pixel Translation
/**
* APIMethod: getMapObjectLonLatFromMapObjectPixel
*
* Parameters:
* moPixel - {Object} MapObject Pixel format
*
* Returns:
* {Object} MapObject LonLat translated from MapObject Pixel
*/
getMapObjectLonLatFromMapObjectPixel: function(moPixel) {
moPixel.x = moPixel.x - (this.map.getSize().w/2);
moPixel.y = moPixel.y - (this.map.getSize().h/2);
return this.mapObject.getMapPositionAt(moPixel);
},
/**
* APIMethod: getMapObjectPixelFromMapObjectLonLat
*
* Parameters:
* moLonLat - {Object} MapObject LonLat format
*
* Returns:
* {Object} MapObject Pixel transtlated from MapObject LonLat
*/
getMapObjectPixelFromMapObjectLonLat: function(moLonLat) {
return this.mapObject.geoPosToContainerPixels(moLonLat);
},
/************************************
* *
* MapObject Primitives *
* *
************************************/
// LonLat
/**
* APIMethod: getLongitudeFromMapObjectLonLat
*
* Parameters:
* moLonLat - {Object} MapObject LonLat format
*
* Returns:
* {Float} Longitude of the given MapObject LonLat
*/
getLongitudeFromMapObjectLonLat: function(moLonLat) {
return this.sphericalMercator ?
this.forwardMercator(moLonLat.lon, moLonLat.lat).lon :
moLonLat.lon;
},
/**
* APIMethod: getLatitudeFromMapObjectLonLat
*
* Parameters:
* moLonLat - {Object} MapObject LonLat format
*
* Returns:
* {Float} Latitude of the given MapObject LonLat
*/
getLatitudeFromMapObjectLonLat: function(moLonLat) {
return this.sphericalMercator ?
this.forwardMercator(moLonLat.lon, moLonLat.lat).lat :
moLonLat.lat;
},
/**
* APIMethod: getMapObjectLonLatFromLonLat
*
* Parameters:
* lon - {Float}
* lat - {Float}
*
* Returns:
* {Object} MapObject LonLat built from lon and lat params
*/
getMapObjectLonLatFromLonLat: function(lon, lat) {
var mmLatLon;
if(this.sphericalMercator) {
var lonlat = this.inverseMercator(lon, lat);
mmLatLon = new MMLatLon(lonlat.lat, lonlat.lon);
} else {
mmLatLon = new MMLatLon(lat, lon);
}
return mmLatLon;
},
// Pixel
/**
* APIMethod: getXFromMapObjectPixel
*
* Parameters:
* moPixel - {Object} MapObject Pixel format
*
* Returns:
* {Integer} X value of the MapObject Pixel
*/
getXFromMapObjectPixel: function(moPixel) {
return moPixel.x;
},
/**
* APIMethod: getYFromMapObjectPixel
*
* Parameters:
* moPixel - {Object} MapObject Pixel format
*
* Returns:
* {Integer} Y value of the MapObject Pixel
*/
getYFromMapObjectPixel: function(moPixel) {
return moPixel.y;
},
/**
* APIMethod: getMapObjectPixelFromXY
*
* Parameters:
* x - {Integer}
* y - {Integer}
*
* Returns:
* {Object} MapObject Pixel from x and y parameters
*/
getMapObjectPixelFromXY: function(x, y) {
return new MMPoint(x, y);
},
CLASS_NAME: "OpenLayers.Layer.MultiMap"
});