I have the following code,
basically I have two layers one osm laryer, one vector layers, first I add two feature nodes with id 1 and id 2 into the vector layer by single click at two random locations on the map using ol.interaction.draw, then switch to interaction drag by select 'Drag Point' (top left corner), the idea is when drag either one of the two nodes over the other node, the node being dragged shall turn into green node, I can do this by dragging node id 1 to to node id 2 easily, but when i try to drag node id 2 to node id 1, it demands much higher accuracy than vice versa. The only difference between two nodes is node id 1 is created before node id 2.
The problem I see here is in forEachFeatureAtPixel, it rarely detects(or the call back rarely return node id 1) feature node id 1 when dragging node id 2 over node id 1.
I have spent quite a while on this issue. Still cannot figure out why. Really appreciated any help.
Thanks
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Draw and Modify Features</title>
<link rel="stylesheet" href="https://openlayers.org/en/v3.20.1/css/ol.css" type="text/css">
<!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
<script src="https://openlayers.org/en/v3.20.1/build/ol-debug.js"></script>
</head>
<body>
<form class="form-inline">
<select id="type">
<option value="DrawPoint">Draw Point</option>
<option value="DragPoint">Drag Point</option>
</select>
</form>
<div id="map" class="map"></div>
<script>
var raster = new ol.layer.Tile({
source: new ol.source.OSM()
});
var map = new ol.Map({
layers: [raster],
target: 'map',
view: new ol.View({
center: [-11000000, 4600000],
zoom: 4
})
});
var circle_style = new ol.style.Style({
image: new ol.style.Circle({
radius: 5,
fill: new ol.style.Fill({
color: 'rgba(255, 0, 0, 2)'
})
})
});
var overlap_style = new ol.style.Style({
image: new ol.style.Circle({
radius: 8,
fill: new ol.style.Fill({
color: 'rgba(0, 255, 0, 2)'
})
})
});
var features = new ol.Collection();
var featureOverlay = new ol.layer.Vector({
source: new ol.source.Vector({
features: features
}),
style: circle_style
});
featureOverlay.setMap(map);
window.app = {};
var app = window.app;
/**
* #constructor
* #extends {ol.interaction.Pointer}
*/
app.Drag = function () {
ol.interaction.Pointer.call(this, {
handleDownEvent: app.Drag.prototype.handleDownEvent,
handleDragEvent: app.Drag.prototype.handleDragEvent,
handleMoveEvent: app.Drag.prototype.handleMoveEvent,
handleUpEvent: app.Drag.prototype.handleUpEvent
});
this.coordinate12_ = null;
this.cursor_ = 'pointer';
this.feature_ = null;
this.previousCursor_ = undefined;
};
ol.inherits(app.Drag, ol.interaction.Pointer);
app.Drag.prototype.handleDownEvent = function (evt) {
var map = evt.map;
var feature = map.forEachFeatureAtPixel(evt.pixel,
function (feature, layer) {
return feature;
});
if (feature) {
console.log("down: node_id: " + feature.getProperties()['id']);
this.coordinate12_ = evt.coordinate;
this.feature_ = feature;
}
return !!feature;
};
app.Drag.prototype.handleDragEvent = function (evt) {
var map = evt.map;
fs = featureOverlay.getSource().getFeatures();
var feature = map.forEachFeatureAtPixel(evt.pixel,
function (feature, layer) {
return feature;
});
if (!(feature === undefined)) {
console.log("drag: node_id: " + feature.getProperties()['id']);
// console.log("this:" + this.feature_.getId()+ " o: " + feature.getId());
if (this.feature_.getProperties()['id'] != feature.getProperties()['id']) {
console.log("green: node_id: " + feature.getProperties()['id']);
this.feature_.setStyle(overlap_style);
} else {
this.feature_.setStyle(circle_style);
}
}
var deltaX = evt.coordinate[0] - this.coordinate12_[0];
var deltaY = evt.coordinate[1] - this.coordinate12_[1];
var geometry = /** #type {ol.geom.SimpleGeometry} */
(this.feature_.getGeometry());
geometry.translate(deltaX, deltaY);
this.coordinate12_[0] = evt.coordinate[0];
this.coordinate12_[1] = evt.coordinate[1];
};
app.Drag.prototype.handleMoveEvent = function (evt) {
if (this.cursor_) {
var map = evt.map;
var feature = map.forEachFeatureAtPixel(evt.pixel,
function (feature, layer) {
if (this.feature_ != null)
{
console.log("move forEachFeatureAtPixel: node_id: " + feature.getProperties()['id']);
}
return feature;
});
var element = evt.map.getTargetElement();
if (feature) {
if (this.feature_ != null)
{
console.log("move forEachFeatureAtPixel: node_id: " + feature.getProperties()['id']);
}
if (element.style.cursor != this.cursor_) {
this.previousCursor_ = element.style.cursor;
element.style.cursor = this.cursor_;
}
} else if (this.previousCursor_ !== undefined) {
element.style.cursor = this.previousCursor_;
this.previousCursor_ = undefined;
}
}
};
/**
* #param {ol.MapBrowserEvent} evt Map browser event.
* #return {boolean} `false` to stop the drag sequence.
*/
app.Drag.prototype.handleUpEvent = function (evt) {
this.coordinate12_ = null;
this.feature_ = null;
return false;
};
var draw = new ol.interaction.Draw({
features: features,
type: ('Point')
});
var drag = new app.Drag();
var id_count = 0;
draw.on('drawend', function(e) {
e.feature.setProperties({
'id': ++id_count
})
console.log(e.feature, e.feature.getProperties());
});
map.addInteraction(draw);
var typeSelect = document.getElementById('type');
typeSelect.value = 'DrawPoint';
typeSelect.onchange = function () {
if (typeSelect.value == 'DrawPoint')
{
map.removeInteraction(drag);
map.addInteraction(draw);
}else
{
map.removeInteraction(draw);
map.addInteraction(drag);
}
};
</script>
</body>
</html>
Prevent the feature(be it 1st or 2nd) which is being moved to get returned from map.forEachFeatureAtPixel method.
See the below working code snippet.
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Draw and Modify Features</title>
<link rel="stylesheet" href="https://openlayers.org/en/v3.20.1/css/ol.css" type="text/css">
<!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
<script src="https://openlayers.org/en/v3.20.1/build/ol-debug.js"></script>
</head>
<body>
<form class="form-inline">
<select id="type">
<option value="DrawPoint">Draw Point</option>
<option value="DragPoint">Drag Point</option>
</select>
</form>
<div id="map" class="map"></div>
<script>
var raster = new ol.layer.Tile({
source: new ol.source.OSM()
});
var map = new ol.Map({
layers: [raster],
target: 'map',
view: new ol.View({
center: [-11000000, 4600000],
zoom: 4
})
});
var circle_style = new ol.style.Style({
image: new ol.style.Circle({
radius: 5,
fill: new ol.style.Fill({
color: 'rgba(255, 0, 0, 2)'
})
})
});
var overlap_style = new ol.style.Style({
image: new ol.style.Circle({
radius: 8,
fill: new ol.style.Fill({
color: 'rgba(0, 255, 0, 2)'
})
})
});
var features = new ol.Collection();
var featureOverlay = new ol.layer.Vector({
source: new ol.source.Vector({
features: features
}),
style: circle_style
});
featureOverlay.setMap(map);
window.app = {};
var app = window.app;
/**
* #constructor
* #extends {ol.interaction.Pointer}
*/
var dragFeature;
app.Drag = function () {
ol.interaction.Pointer.call(this, {
handleDownEvent: app.Drag.prototype.handleDownEvent,
handleDragEvent: app.Drag.prototype.handleDragEvent,
handleMoveEvent: app.Drag.prototype.handleMoveEvent,
handleUpEvent: app.Drag.prototype.handleUpEvent
});
this.coordinate12_ = null;
this.cursor_ = 'pointer';
this.previousCursor_ = undefined;
};
ol.inherits(app.Drag, ol.interaction.Pointer);
app.Drag.prototype.handleDownEvent = function (evt) {
var map = evt.map;
var feature = map.forEachFeatureAtPixel(evt.pixel,
function (feature, layer) {
return feature;
});
if (feature) {
//console.log("down: node_id: " + feature.getProperties()['id']);
this.coordinate12_ = evt.coordinate;
//this.feature_ = feature;
dragFeature = feature;
}
return !!feature;
};
app.Drag.prototype.handleDragEvent = function (evt) {
var map = evt.map;
fs = featureOverlay.getSource().getFeatures();
// Filter the feature
var feature = map.forEachFeatureAtPixel(evt.pixel,
function (feature, layer) {
if ( feature.getProperties()['id'] != dragFeature.getProperties()['id'] ) {
return feature;
}
});
if (!(feature === undefined)) {
console.log("------------------- drag: node_id: " + feature.getProperties()['id']);
// console.log("this:" + this.feature_.getId()+ " o: " + feature.getId());
if (dragFeature.getProperties()['id'] != feature.getProperties()['id']) {
console.log("green: node_id: " + feature.getProperties()['id']);
dragFeature.setStyle(overlap_style);
}
}
else {
dragFeature.setStyle(circle_style);
}
var deltaX = evt.coordinate[0] - this.coordinate12_[0];
var deltaY = evt.coordinate[1] - this.coordinate12_[1];
var geometry = /** #type {ol.geom.SimpleGeometry} */
(dragFeature.getGeometry());
geometry.translate(deltaX, deltaY);
this.coordinate12_[0] = evt.coordinate[0];
this.coordinate12_[1] = evt.coordinate[1];
};
app.Drag.prototype.handleMoveEvent = function (evt) {
if (this.cursor_) {
var map = evt.map;
var feature = map.forEachFeatureAtPixel(evt.pixel,
function (feature, layer) {
if (dragFeature != null)
{
//console.log("move forEachFeatureAtPixel: node_id: " + feature.getProperties()['id']);
}
return feature;
});
var element = evt.map.getTargetElement();
if (feature) {
if (dragFeature != null)
{
//console.log("move forEachFeatureAtPixel: node_id: " + feature.getProperties()['id']);
}
if (element.style.cursor != this.cursor_) {
this.previousCursor_ = element.style.cursor;
element.style.cursor = this.cursor_;
}
} else if (this.previousCursor_ !== undefined) {
element.style.cursor = this.previousCursor_;
this.previousCursor_ = undefined;
}
}
};
/**
* #param {ol.MapBrowserEvent} evt Map browser event.
* #return {boolean} `false` to stop the drag sequence.
*/
app.Drag.prototype.handleUpEvent = function (evt) {
this.coordinate12_ = null;
//this.feature_ = null;
dragFeature = null;
return false;
};
var draw = new ol.interaction.Draw({
features: features,
type: ('Point')
});
var drag = new app.Drag();
var id_count = 0;
draw.on('drawend', function(e) {
e.feature.setProperties({
'id': ++id_count
})
//console.log(e.feature, e.feature.getProperties());
});
map.addInteraction(draw);
var typeSelect = document.getElementById('type');
typeSelect.value = 'DrawPoint';
typeSelect.onchange = function () {
if (typeSelect.value == 'DrawPoint')
{
map.removeInteraction(drag);
map.addInteraction(draw);
}else
{
map.removeInteraction(draw);
map.addInteraction(drag);
}
};
</script>
</body>
</html>
Related
This question already has answers here:
Google Maps API v3: How to remove all markers?
(32 answers)
Closed 4 years ago.
Could someone be kind enough to share how I can clear the markers in google map before refreshing it with a new set of markers?
In my map, I'm adding markers from an array that contains name, lat and long. The name can be picked from a drop down menu, and then all the markers for that name are added to the page.
Prtoject : Asp.Net Mvc
Link image: https://i.hizliresim.com/V927Py.jpg
When the user adds markers, the previous set of markers remain. I'd like to remove any existing markers before adding the new set.
After reading the documentation, I tried this:
#{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
#model List<Project_Map.Models.KONUM>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Complex Marker Icons</title>
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<style>
#map_wrapper {
height: 700px;
}
#map_canvas {
width: 100%;
height: 100%;
}
</style>
<div id="map_wrapper">
<div class="mapping" id="map_canvas">
</div>
</div>
<div id="map"></div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
jQuery(function ($) {
var script = document.createElement('script');
script.src = "https://maps.googleapis.com/maps/api/js?key=AIzaSyBT56XlfxnK2OB4K93vWdrZci_CKjZyQOM&callback=initMap";
document.body.appendChild(script);
});
</script>
<!-- Google Maps Kodu -->
<script type="text/javascript">
var contentString = '<div id="content">' +
'<div id="siteNotice">' +
'<img src="#IMG_SRC#" />' +
'</div>' +
//'<h2 id="firstHeading" class="firstHeading">#PERSONEL#</h2>' +
'<div id="bodyContent">' +
'<b>Mesafe: </b>#MESAFE# Km<br />' +
'<b>Tarih: </b> #TARIH#' +
'</p>' +
'</div>' +
'</div>';
$(document).ready(function () {
initMap();
});
function initMap() {
var mapCenter = { lat: 39.684536, lng: 35.337094 };
var map = new google.maps.Map(document.getElementById('map_wrapper'), {
zoom: 6,// haritanın yakınlık derecesi
center: mapCenter, // haritanın merkezi
mapTypeId: google.maps.MapTypeId.HYBRID
});
var infoWindow = new google.maps.InfoWindow();
setInterval(function () {
$.ajax({
url: '#Url.Action("GetMapLocations", "Konum")',
type: "POST",
success: function (data) {
var json = JSON.parse(data);
for (var i = 0; i < json.length; i++) {
var position = {
lat: parseFloat(json[i].lat.replace(',', '.')),
lng: parseFloat(json[i].lng.replace(',', '.'))
};
var marker = new google.maps.Marker({
position: position,
animation: google.maps.Animation.BOUNCE,
map: map,
});
// infoWindow içeriğini replace et
var cs = contentString;
cs = cs.replace("#PERSONEL#", json[i].name);
cs = cs.replace("#MESAFE#", json[i].mesafe);
cs = cs.replace("#TARIH#", json[i].tarih);
cs = cs.replace("#IMG_SRC#", json[i].img);
google.maps.event.addListener(marker, 'click', (function (marker, cs, infoWindow) {
return function () {
infoWindow.setContent(cs);
infoWindow.open(map, this);
passive: true;
};
})(marker, cs, infoWindow));
};
},
error: function (data) { alert("Malesef Sunucunuza Ulaşamıyoruz. Lütfen Tekrar Deneyiniz..."); },
});
}, 5000);
};
</script>
</body>
</html>
You have to set up an array, where you can store the added marker
var gmarkers = [];
If you add a marker you have to store the marker object in the array.
gmarkers.push(marker);
If you want to remove these markers you can use something like:
function removeMarker() {
if (gmarkers.length > 0) {
for (var i=0; i<gmarkers.length; i++) {
if (gmarkers[i] != null) {
gmarkers[i].setMap(null);
}
}
}
gmarkers = [];
}
I have a google maps piece of code that gets my current location to a fixed destination but the width and height of the view wont stay the same after i click on the button to get the directions and it looks very unprofessional
The width and height changes once i click on the button. I want the size of the maps to stay the same as before i click the button and once i click the button the size of the maps should remain the same as before and not change
This is the code i have:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<h2>Our Location</h2>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=AIzaSyC6v5-2uaq_wusHDktM9ILcqIrlPtnZgEk&sensor=false">
</script>
<script type="text/javascript">
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(success);
} else {
alert("There is Some Problem on your current browser to get Geo Location!");
}
function success(position) {
var lat = position.coords.latitude;
var long = position.coords.longitude;
var city = position.coords.locality;
var LatLng = new google.maps.LatLng(lat, long);
var mapOptions = {
center: LatLng,
zoom: 12,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("MyMapLOC"), mapOptions);
var marker = new google.maps.Marker({
position: LatLng,
title: "<div style = 'height:60px;width:200px'><b>You Are Here:</b><br />Latitude: "
+ lat + +"<br />Longitude: " + long
});
marker.setMap(map);
var getInfoWindow = new google.maps.InfoWindow({ content: "<b>Your Current Location</b><br/> Latitude:" +
lat + "<br /> Longitude:" + long + ""
});
getInfoWindow.open(map, marker);
}
</script>
<script type="text/javascript">
function SearchRoute() {
document.getElementById("MyMapLOC").style.display = 'none';
var markers = new Array();
var myLatLng;
//Find the current location of the user.
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(p) {
var myLatLng = new google.maps.LatLng(p.coords.latitude, p.coords.longitude);
var m = {};
m.title = "Your Current Location";
m.lat = p.coords.latitude;
m.lng = p.coords.longitude;
markers.push(m);
//Find Destination address location.
var address = document.getElementById("txtDestination").value;
var geocoder = new google.maps.Geocoder();
geocoder.geocode({ 'address': address }, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
m = {};
m.title = address;
m.lat = results[0].geometry.location.lat();
m.lng = results[0].geometry.location.lng();
markers.push(m);
var mapOptions = {
center: myLatLng,
zoom: 4,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("MapRoute"), mapOptions);
var infoWindow = new google.maps.InfoWindow();
var lat_lng = new Array();
var latlngbounds = new google.maps.LatLngBounds();
for (i = 0; i < markers.length; i++) {
var data = markers[i];
var myLatlng = new google.maps.LatLng(data.lat, data.lng);
lat_lng.push(myLatlng);
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: data.title
});
latlngbounds.extend(marker.position);
(function(marker, data) {
google.maps.event.addListener(marker, "click", function(e) {
infoWindow.setContent(data.title);
infoWindow.open(map, marker);
});
})(marker, data);
}
map.setCenter(latlngbounds.getCenter());
map.fitBounds(latlngbounds);
//***********ROUTING****************//
//Initialize the Path Array.
var path = new google.maps.MVCArray();
//Getting the Direction Service.
var service = new google.maps.DirectionsService();
//Set the Path Stroke Color.
var poly = new google.maps.Polyline({ map: map, strokeColor: '#4986E7' });
//Loop and Draw Path Route between the Points on MAP.
for (var i = 0; i < lat_lng.length; i++) {
if ((i + 1) < lat_lng.length) {
var src = lat_lng[i];
var des = lat_lng[i + 1];
path.push(src);
poly.setPath(path);
service.route({
origin: src,
destination: des,
travelMode: google.maps.DirectionsTravelMode.DRIVING
}, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
for (var i = 0, len = result.routes[0].overview_path.length; i < len; i++) {
path.push(result.routes[0].overview_path[i]);
}
} else {
alert("Invalid location.");
window.location.href = window.location.href;
}
});
}
}
} else {
alert("Request failed.")
}
});
});
}
else {
alert('Some Problem in getting Geo Location.');
return;
}
}
</script>
</head>
<body>
<form id="SetDirections">
<p>Directions To Elena's Delicacies</p>
<p>
<b>Elena's Delicacies Address:</b>
<input type="text" id="txtDestination" value="499 Paradise Valey Pinetown" style="width: 300px"disabled readonly />
<input type="button" value="Directions" onclick="SearchRoute()" />
</p>
<div id="MyMapLOC" style="width: 100%; height: 600px">
</div>
<div id="MapRoute" style="width: 500px; height: 500px">
</div>
</form>
</body>
</html>
This is a picture which shows the number of my shops at this place, but why on my map the number 90 is repeated?. I am using a styleFunc to determine the color, the cold is something like:
function styleFunction(feature) {
var destCount = feature.get("destCount");
var originCount = feature.get("originCount");
if (typeof originCount === "undefined") {
originCount = 0;
}
if (typeof destCount === "undefined") {
destCount = 0;
}
totalPointsCount = destCount + originCount;
totalPointsCount = totalPointsCount.toString();
return getStyle(feature.getProperties().type);
}
function styleFunction(feature) {
var destCount = feature.get("destCount");
var originCount = feature.get("originCount");
if (typeof originCount === "undefined") {
originCount = 0;
}
if (typeof destCount === "undefined") {
destCount = 0;
}
totalPointsCount = destCount + originCount;
totalPointsCount = totalPointsCount.toString();
return getStyle(feature.getProperties().type);
}
Code for creating the baseLayer is:
fetch('data/xml/service-meta-data.xml').then(function (response) {
return response.text();
}).then(function (text) {
var result = parser.read(text);
var options = ol.source.WMTS.optionsFromCapabilities(result, {
layer: 'China',
matrixSet: 'EPSG:3857'
});
var baseLayer = new ol.layer.Tile({
opacity: 1,
source: new ol.source.WMTS(options)
});
var map = new ol.Map({
layers: [
baseLayer,
vectorLayer
],
overlays: [infoOverlay],
target: 'map',
view: view
});
})
You can ignore all the data processing, and focus on the stylefunc, can anyone tell me why the number is repeated? Many thxs
Have a look this link Openlayers3 Vector labels.
Tile layers create duplicate labels when you start zooming in. So create it has ImageWMS layer.
var baseLayer = new ol.layer.Image({
opacity: 1,
source: new ol.source.ImageWMS(options)
});
I tried to get a map image from a wms server using the following code.
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Playing with fis broker berlin</title>
<link rel="stylesheet" href="../../libs/ol3/css/ol.css"/>
<link rel="stylesheet" href="../../css/samples.css"/>
</head>
<body>
<div id="map" class="map"></div>
<script src="../../libs/ol3/js/ol.js"></script>
<script>
var imageSource = new ol.source.ImageWMS({
url: 'http://fbinter.stadt-berlin.de/fb/wms/senstadt/k_dtk50',
params: {
'LAYERS': '0',
'REQUEST': 'GetMap',
'STYLES': ['default'],
'SRS': 'EPSG:4326',
'BBOX': [13.079, 52.3284, 13.7701, 52.6877],
'WIDTH': '256',
'HEIGT': '256',
'FORMAT': 'jpeg'
}
})
imageSource.on('imageloaderror', function (event) {
var imageState = event.target.getState()
var request = event.image.n
console.log('imageloaderror, state = ' + imageState)
console.log('request: ' + request)
})
var imageLayer = new ol.layer.Image({
opacity: 0,
source: imageSource
})
var view = new ol.View({
center: [13.4297269, 52.4594867],
zoom: 10
})
var map = new ol.Map({
target: 'map',
layers: [imageLayer],
view: view
})
</script>
</body>
</html>
ol3 fails to show the image, because the wms sends backs a xml exception report instead of jpeg data meaning
crs is not permitted: EPSG:3857.
On the java console we see the message
Resource interpreted as Image but transferred with MIME type text/xml ...
I understand, that the image source is not set up correctly. This needs further investigaton by me. But My question is:
How can I catch the message crs is not permitted: EPSG:3857 and any other error messages from the wms server by the ol script?
You will need to use XHR to load the image and get the exception text, see this thread for some inspiration:
https://groups.google.com/d/msg/ol3-dev/39tX1fSeSc0/KGURE6NrexIJ
imageLoadFunction: function(image, src) {
progress('start');
var img = image.getImage();
if (typeof window.btoa == 'function') {
var xhr = new XMLHttpRequest();
xhr.open('GET', src, true);
xhr.responseType = 'arraybuffer';
xhr.onload = function(e) {
if (this.status == 200) {
var uInt8Array = new Uint8Array(this.response);
var i = uInt8Array.length;
var binaryString = new Array(i);
while (i--) {
binaryString[i] = String.fromCharCode(uInt8Array[i]);
}
var data = binaryString.join('');
var type = xhr.getResponseHeader('content-type');
if (type.indexOf('image') === 0) {
img.src = 'data:' + type + ';base64,' + window.btoa(data);
} else {
error($.parseJSON(data));
}
} else {
error(this.statusText);
}
progress('end');
};
xhr.send();
} else {
img.onload = function() {
progress('end');
};
img.onerror = function() {
progress('end');
error();
};
img.src = src;
}
}
})
I'm not a developer and i'm trying to learn javascript step by step. Now, I need to add a simple infobox in the gmaps that I'm working on. The problem is that, I add the code as explained in the google reference but it doesn't work: in the beginning i was using infowindow wich worked well but wasn't so customized. I also put the infobox.js link in that page and it is the last release.
This is test page: http://www.squassabia.com/aree_espositive_prova2.asp
What i need to do is to display the message you see in the code (boxText.innerHTML), just to understand it step by step and to keep things simple. After that I'm going to style it and add data from xml (which I think is not going to be that difficult).
As i didn't fint any solution in any of the old posts, if anyone of you can give me a clue on how to solve the problem, would be very appreciated, I've tried everything and put infobox stuff pretty much everywhere :(
Cheers
I give you the initialize() code:
//icone custom
var customIcons = {
negozio: {icon: '/images/gmaps/mc.png'},
outlet: {icon: '/images/gmaps/pin_fuc_outlet.png'},
sede: {icon: '/images/gmaps/pin_fuc_home.png'}
};
var clusterStyles = [
{
textColor: 'white',
url: '/images/gmaps/mc.png',
height: 48,
width: 48
}];
function initialize() {
//creo una istanza della mappa
var map = new google.maps.Map(document.getElementById("mapp"), {
center: new google.maps.LatLng(45.405, 9.867),
zoom: 9,
mapTypeId: 'roadmap',
saturation: 20, //scrollwheel: false
});
//stile della mappa
var pinkroad = [ //creo un array di proprietà
{
featureType: "all", //seleziono la feature
stylers: [{gamma: 0.8 },{ lightness: 50 },{ saturation: -100}]
},
{
featureType: "road.highway.controlled_access",
stylers: [{ hue: "#FF3366" },{ saturation: 50 },{ lightness: -5 }]
}
];
map.setOptions({styles: pinkroad});
var name;
//Creates content and style
var boxText = document.createElement("div");
boxText.style.cssText = "border: 1px solid black; margin-top: 8px; background: yellow; padding: 5px;";
boxText.innerHTML = "Prova Infobox<br >Successo!!Test Text";
var myOptions = {
content: boxText
,disableAutoPan: false
,maxWidth: 0
,pixelOffset: new google.maps.Size(-140, 0)
,zIndex: null
,boxStyle: {background: "url('tipbox.gif') no-repeat", opacity: 0.75, width: "280px"}
,closeBoxMargin: "10px 2px 2px 2px"
,closeBoxURL: "http://www.google.com/intl/en_us/mapfiles/close.gif"
,infoBoxClearance: new google.maps.Size(1, 1)
,isHidden: false
,pane: "floatPane"
,enableEventPropagation: false
};
var ib = new InfoBox(myOptions);
//creo il marker
downloadUrl("xml/negozi.xml", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++)
{
var type = markers[i].getAttribute("tipo");
var address = markers[i].getElementsByTagName("indirizzo")[0].childNodes[0].nodeValue;
var city = markers[i].getElementsByTagName("citta")[0].childNodes[0].nodeValue;
var phone = markers[i].getElementsByTagName("telefono")[0].childNodes[0].nodeValue;
name = markers[i].getElementsByTagName("nome")[0].childNodes[0].nodeValue;
var point = new google.maps.LatLng(parseFloat(markers[i].getAttribute("lat")), parseFloat(markers[i].getAttribute("lng")));
var html = name + '<br />' + address + '<br />' + city + '<br />' + phone;
var icon = '/images/gmaps/pin_fuc.png';
var marker = new google.maps.Marker({map: map, position: point, icon :'/images/gmaps/pin_fuc.png'});
/*google.maps.event.addListener(marker,"click", function(){
map.panTo(this.position);
});*/
createMarkerButton(marker);
google.maps.event.addListener(marker, "click", function (e) {
ib.open(map);
});
}
});
function createMarkerButton(marker) {
//Creates a sidebar button
var ul = document.getElementById("list");
var li = document.createElement("li");
li.appendChild(document.createTextNode(name));
ul.appendChild(li);
//Trigger a click event to marker when the button is clicked.
google.maps.event.addDomListener(li, "mouseover", function(){
marker.setAnimation(google.maps.Animation.BOUNCE);
setTimeout (function (){marker.setAnimation(null);}, 750);
});
google.maps.event.addDomListener(li, "mouseout", function(){
google.maps.event.trigger(marker, "mouseout");
});
}
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}