I am new to this mailing list and this is my first post to this list.
I am working on the Ruby on Rails application (OpenStreetView).I need a help
in the following issue.
There are 5 copies of the same images are placed in a folder i.e.
large(1024*768),medium(500*
375),small(240*180),thu mnail(75*75),square(100*50) in size.
The following code upload number of Geocoded images(square size) when the
page loads.I want when someone click on the any Geocoded image on the page
,it should show the large image(1024*768) of the same.And further click on
the large image it must show again the square size image of the same.
Following is the actual code.It is in .js file.Hope for reply from you very
soo
var epsg4326 = new OpenLayers.Projection("EPSG:4326");
var OSVMain = (function() {
var map, markers, map_move_timeout;
var photos = {};
function mapChange() {
if( map_move_timeout )
clearTimeout(map_move_timeout);
map_move_timeout = setTimeout(mapChangeTimeout, 500);
updateLinks();
}
function updateLinks() {
var center = OSV.getMapCenter(map);
var zoom = map.getZoom();
$('#permalink').attr('href',OSV.getURLBase()+'?lat
='+center.lat+'&lon='+center.lon+'&zoom='+zoom);
$('#kmllink').attr('href',getLocateLink('kml'));
}
function getLocateLink(format) {
var extent = OSV.getMapExtent(map);
var url = OSV.getURLBase()+'/api/photos/locate.'+format+'?bbox=';
url += [ extent.left, extent.bottom, extent.right, extent.top].join(',');
return url;
}
function mapChangeTimeout() {
map_move_timeout = null;
var url = getLocateLink('json');
$.get( url, null, photosLoaded, 'json' );
}
function photosLoaded(json) {
var new_photos = {};
var size = new OpenLayers.Size(50, 50);
var offset = new OpenLayers.Pixel(-25, -25);
for( var i = 0, l = json.length; i < l; ++i ) {
var p = new OSVPhoto(json[i]);
if( photos[p.data.id] ) {
new_photos[p.data.id] = photos[p.data.id];
photos[p.data.id] = null;
} else {
var position = new OpenLayers.LonLat(p.data.lon,p.data.lat);
var icon = new OpenLayers.Icon(p.url('square'), size, offset);
p.marker = new OpenLayers.Marker(position.clone().transform(epsg4 326,
map.getProjectionObject()), icon);
new_photos[p.data.id] = p;
markers.addMarker(p.marker);
}
}
for( var k in photos ) {
var p = photos[k];
if( p && p.marker )
markers.removeMarker(p.marker);
}
photos = new_photos;
}
function setup() {
var vectors;
var popup;
map = new OpenLayers.Map($('#map').get(0), {
controls: [
new OpenLayers.Control.ArgParser(),
new OpenLayers.Control.Attribution(),
new OpenLayers.Control.LayerSwitcher(),
new OpenLayers.Control.Navigation(),
new OpenLayers.Control.PanZoomBar()
],
units: "m",
maxResolution: 156543.0339,
numZoomLevels: 20,
displayProjection: new OpenLayers.Projection("EPSG:4326")
});
var mapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik", {
displayOutsideMaxExtent: true,
wrapDateLine: true
});
map.addLayer(mapnik);
var osmarender = new OpenLayers.Layer.OSM.Osmarender("Osmarender", {
displayOutsideMaxExtent: true,
wrapDateLine: true
});
map.addLayer(osmarender);
var numZoomLevels = Math.max(mapnik.numZoomLevels,
osmarender.numZoomLevels);
var start = OSV.getStartLocation();
var numzoom = map.getNumZoomLevels();
if (start.zoom >= numzoom) start.zoom = numzoom - 1;
map.setCenter(start.pos.clone().transform(epsg4326 ,
map.getProjectionObject()), start.zoom);
OSV.setupMapEventHandlers(map);
map.events.register("moveend", map, mapChange);
map.events.register("zoomend", map, mapChange);
mapChange();
markers = new OpenLayers.Layer.Markers("Markers", {
displayInLayerSwitcher: false,
numZoomLevels: numZoomLevels,
maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508),
maxResolution: 156543,
units: "m",
projection: "EPSG:900913"
});
map.addLayer(markers);
}
return {
setup: setup,
1:1
};
})();
$(function(){
OSVMain.setup();
});
Regards
Amrit pal
http://amritpalpathakgne.wordpress.com/
