Google Maps tool for accurately positioning image overlay? -


i hoping can point me in right direction.

i have google map loads markers xml file, along various other map elements, works great. need overlay png image onto map.

i have tried hours correctly align png on top of site cannot find exact 2 co-ordinates need (south-west , north-east). there tool doing this? ideally upload image , drag corners fit, , outputs 2 co-ordinates (lat/lng) need?

i have tried using tool: http://overlay-tiler.googlecode.com/svn/trunk/upload.html - has 3 contact points.

i have tried using tool: http://www.birdtheme.org/useful/customoverlay.html - cannot resize image once uploaded map , 1 chance @ clicking south-west marker!

i can use google earth align png perfectly, can't see way of outputting lat/lng points.

any advice appreciated.

heres working example of andré dion's explanation.

http://jsfiddle.net/4cwcw/3/

var overlay;  debugoverlay.prototype = new google.maps.overlayview();  function initialize() {   var mapoptions = {     zoom: 15,     center: new google.maps.latlng(40.743388,-74.007592)   };    var map = new google.maps.map(document.getelementbyid('map-canvas'), mapoptions);   var swbound = new google.maps.latlng(40.73660837340877, -74.01852328);   var nebound = new google.maps.latlng(40.75214181, -73.99661518216243);   var bounds = new google.maps.latlngbounds(swbound, nebound);     console.log(map);   var srcimage = 'http://robincwillis.com/top/splash/04.jpg';    overlay = new debugoverlay(bounds, srcimage, map);    var markera = new google.maps.marker({             position: swbound,             map: map,             draggable:true         });      var markerb = new google.maps.marker({         position: nebound,         map: map,         draggable:true     });      google.maps.event.addlistener(markera,'drag',function(){          var newpointa = markera.getposition();         var newpointb = markerb.getposition();         var newbounds =  new google.maps.latlngbounds(newpointa, newpointb);         overlay.updatebounds(newbounds);     });    google.maps.event.addlistener(markerb,'drag',function(){        var newpointa = markera.getposition();       var newpointb = markerb.getposition();       var newbounds =  new google.maps.latlngbounds(newpointa, newpointb);       overlay.updatebounds(newbounds);   });      google.maps.event.addlistener(markera, 'dragend', function () {          var newpointa = markera.getposition();         var newpointb = markerb.getposition();         console.log("point1"+ newpointa);         console.log("point2"+ newpointb);     });      google.maps.event.addlistener(markerb, 'dragend', function () {         var newpointa = markera.getposition();         var newpointb = markerb.getposition();         console.log("point1"+ newpointa);         console.log("point2"+ newpointb);     });  }  function debugoverlay(bounds, image, map) {    this.bounds_ = bounds;   this.image_ = image;   this.map_ = map;   this.div_ = null;   this.setmap(map); }  debugoverlay.prototype.onadd = function() {    var div = document.createelement('div');   div.style.borderstyle = 'none';   div.style.borderwidth = '0px';   div.style.position = 'absolute';   var img = document.createelement('img');   img.src = this.image_;   img.style.width = '100%';   img.style.height = '100%';   img.style.opacity = '0.5';   img.style.position = 'absolute';   div.appendchild(img);   this.div_ = div;   var panes = this.getpanes();   panes.overlaylayer.appendchild(div); };  debugoverlay.prototype.draw = function() {   var overlayprojection = this.getprojection();   var sw = overlayprojection.fromlatlngtodivpixel(this.bounds_.getsouthwest());   var ne = overlayprojection.fromlatlngtodivpixel(this.bounds_.getnortheast());   var div = this.div_;   div.style.left = sw.x + 'px';   div.style.top = ne.y + 'px';   div.style.width = (ne.x - sw.x) + 'px';   div.style.height = (sw.y - ne.y) + 'px'; };   debugoverlay.prototype.updatebounds = function(bounds){     this.bounds_ = bounds;     this.draw(); };  debugoverlay.prototype.onremove = function() {   this.div_.parentnode.removechild(this.div_);   this.div_ = null; };  initialize();

Comments

Post a Comment

Popular posts from this blog

php - Why I am getting the Error "Commands out of sync; you can't run this command now" -

the documentation of error mentioned in title says if commands out of sync; can't run command now in client code, calling client functions in wrong order. this can happen, example, if using mysql_use_result() , try execute new query before have called mysql_free_result(). can happen if try execute 2 queries return data without calling mysql_use_result() or mysql_store_result() in between. from here: http://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html but in first query not fetching data mysql database, inserting. , in second query getting data database. here code $connection = mysqli_connect("localhost","username","password","tbl_msgs"); if(mysqli_connect_errno($connection)) { die("failed connect mysql: " . mysqli_connect_error()); } $query = "insert users (total_comments, total_views) values ({$total_comments}, {$total_views});"; $query .= "insert msgs (no...
Read more

linux - Does gcc have any options to add version info in ELF binary file? -

i mean whether gcc can insert source code version infor elf binary section or similar. not want change source file, add info gcc option in makefile. you can emit version info text file, turn text file object file statically link executable. the first step simple have write code: script or write version info in format plain text file. write makefile rule produce version.o version.txt, using objcopy . you'll have object file 2 useful symbols defined in it: beginning , end of textual version info. add generated object executable, , you'll able access version 2 ways: running strings on binary, or writing code in application print version string (you'll need declare start , end symbols variables in header file).
Read more

java - Are there any classes that implement javax.persistence.Parameter<T>? -

i'm using named queries fetch entities database using jpa , hibernate , came across puzzling me: how come there no default implementations of javax.persistence.parameter interface? i rather impressed how @staticmetamodel used criteriabuilder in jpa2 meaning type safety , don't have mess around setting string names. wanted apply similar of jpa1 ejb's i'm working on: dealergroup_.class: public dealergroup_ { public parameter<integer> id = new parameterimpl<integer>("id"); /// etc... } dealergroupfacade.class: // ... public dealergroup fetch(integer id) { typedquery<dealergroup> query = em.createnamedquery("dealergroup.fetchbyid", dealergroup.class); query.setparameter(dealergroup_.id, query); return query.getsingleresult(); } // ... i surprised find there no implementations of parameter interface - of course, implement myself absence makes me suspicious may mistake using in way? should implementing parameter...
Read more