Mouse movement parallax on Google Map? - javascript

Is it possible to add something like this to Google Maps?
This demo has parallax with multiple layers, I would need only one
for map itself.
I don't nessessarily need the code because there are few tutorials how to achieve mouse movement parallax. Im more interested how to apply this to Google Maps.
My current ideas / questions?
Would it be somehow possible to move map tiles in the background without moving Google logo?
If not, how to make map bigger (out of browser viewport) without messing up tiles so that I could move whole map and use overflow { hidden; }?
Don't worry about hiding Google's credentials or messing up controls, I could add all the divs, controls and logo myself via JS.
I would be very grateful if you used my provided jsFiddle example to make your point.

You can do this using the panTo() function. I gave it some default numbers for the scroll effect that you can change to meet your needs.
$( "#map-cover" ).on( "mousemove", function( event ) {
var newLatlng = new google.maps.LatLng(
myLatlng.lat() + event.pageY / 1000,
myLatlng.lng() + event.pageX / 1000)
map.panTo(newLatlng);
});
Make sure to add a div above the map and disable the controls on the map
Updated JSFiddle
Upon, getting additional clarification, you can add a listener to check if the map is being dragged.
map.addListener("drag", function() {
dragging = true;
});
map.addListener("dragend", function() {
dragging = false;
});
Draggable map with mouse scroll

Related

Scroll control in jVectorMap

I am using jVectorMap, everything works fine without zooming.
But when a user zoomed in the page I need to allow the user to scroll the the map using a vertical and horizontal scroll bar.
I have tried to add overflow-y: scroll; And other many options to do the scrolling but nothing works perfectly.
I can set the width and height of div to get the scroll bar but it is not related with map zoom in and zoom out.
So I am expecting a scroll bar horizontally and vertically which using that user can see the full map if even it is zoomed.
I have seen a map with below image in the internet
But No idea how can I add a scroll button control like this in jVector map.
Can someone help me to resolve this issue.?
You need two steps:
To understand how the map is translated inside the container, initialize the Map with the onViewportChange event:
$("#map").vectorMap({
map: "world_mill",
// set map properties, series, and so on
//...
onViewportChange: function(event, scaleFactor,transX,transY){
// look at the values here:
console.log("Viewport changed",scaleFactor,transX,transY);
}
});
To the point:
to apply a map translation, set your desired X and Y panning, at the end invoke the applyTransform function:
Example:
var worldMap = $("#map").vectorMap("get", "mapObject");
worldMap.transX = -100;
worldMap.applyTransform();
Additional information:
Luckily, jVectorMap will do the range checking for you, so for your pan buttons you can also simply use somethng like:
worldMap.transX -= (10 * worldMap.scale); // move left
worldMap.transX += (10 * worldMap.scale); // move right
worldMap.transY -= (10 * worldMap.scale); // move up
worldMap.transY += (10 * worldMap.scale); // move down
You will find the range check in the applyTransform function in jVectorMap source code.
Credits: Kirill Lebedev, the great author of jVectorMap.
Lastly, the re-center button:
You can get the center of the map as follows:
var mapCX = (worldMap.width / 2) * worldMap.scale + worldMap.transX * worldMap.scale;
var mapCY = (worldMap.height / 2) * worldMap.scale + worldMap.transY * worldMap.scale;
As you haven't provide any source code, I can't help further, but if you have understand the concept, the transformation between your scrollbar range and the map translation is trivial easy.

D3+Leaflet map.on() issue - running function during (or after) drag event

I'm working with D3+leaflet and have a question - my SVG elements seem to disappear outside the scope of the map frame when I zoom in. Meaning, that when I zoom in the map, and then drag to a different frame, the SVG elements aren't loaded. So i'd like to execute a map.on( ) function for drag events but I'm having trouble.
So for when you zoom in, replotting the SVGs work fine with the map.on("viewreset") - but map.on("drag") or map.on("dragend") seems to have no effect.
var cheat_function = function() { reset(data); drawHour( orderedColumns[currentFrame] )};
map.on("viewreset", cheat_function);
map.on("dragend", cheat_function)
The contents inside cheat_function just do stuff like recalculating the coordinates and redrawing the SVGs.
Any ideas or hacks? thanks guys.
Try with the moveend event:
Fired when the view of the map stops changing (e.g. user stopped
dragging the map).

The mouse scroll wheel event in Openlayers 3

I develop a web site that has two parts: the display by list and the map display.
I have many markers on my map. Now I need to get the marker's coordinates of my map when the mouse scroll wheel zoom in or zoom out. It's possible by moveend. I am not able to do it despite my searches. Anybody can help me please.
Thanks in advance.
It is unclear what you're trying to do as well as what these markers are; Are they ol.geom.Point? If so, you can do something like:
map.getView().on('change:resolution', function(evt){
//layerFeatures is a reference of a ol.layer.Vector
layerFeatures.getSource().forEachFeature(function(feature){
var geom = feature.getGeometry();
var coord = geom.getCoordinates(); //this is valid for a ol.geom.Point
console.info(coord);
});
});

is there a way to resize marker icons depending on zoom level in leaflet?

I'm making a project for the school and I need to resize the marker icons depending on zoom level in a leaflet map, Is there an easy way to accomplish this? Any tutorial on the web? Thanks in advance for the help!!!
In order to change the size of the markers when you zoom in/out, you'll need to handle the event.
map.on('zoomend', function() { });
The zoomend event will be called whenever the map has finished zooming in or out. See the API here.
Now, inside this function, you can call your custom code in order to change the size of the markers. For example, let's say you wanted to take a simple approach and set the size of a circle marker equal to the size of the maps zoom level. See the API for a CircleMarker here
// Create some marker that will be resized on the map zooming
var myMarker = new L.CircleMarker([10,10], { /* Options */ });
map.on('zoomend', function() {
var currentZoom = map.getZoom();
myMarker.setRadius(currentZoom);
});
Now whenever the map zooms in or out, the size of the marker will change.
I'm not sure what Stophace is referring to regarding circleMarkers not changing size, but, adding to the approved answer... if you want to resize circleMakers or change any other styling options (I find it helpful to change the weight along with radius), you can use the following approach:
map.on('zoomend', function() {
var currentZoom = map.getZoom();
var myRadius = currentZoom*(1/2); //or whatever ratio you prefer
var myWeight = currentZoom*(1/5); //or whatever ratio you prefer
layername.setStyle({radius: myRadius, weight: setWeight});
});
layername will be replaced with the name of whatever layer you have which contains circleMarkers... and of course you can change the fractions to your liking to suit your needs.
I'm guessing the OP's school project is finished, but I hope this helps others who have the same question!

Google Maps custom content boxes?

I can't seem to find andthing in the Google Maps V3 docs about creating custom content boxes for Google maps.
Below is an example of a custom content box:
http://www.apple.com/retail/alamoana/map/
My question is... how do you go about changing the default white balloon popup?
Cheers!
Look at the InfoBox toolkit in the v3 utility libraries. I'm using them on dev.mapfaire.com, if you want to take a look.
Personally, i don't use any of google's custom overlay scripts and such. I made a custom php page which hold the iframe, where I can load custom css files, and also I create custom DIVs that go over top of the map, which are then repositioned while dragging when opened.
You can use the "Drag,Dragstart,Dragend" events to help you reposition elements that you have created.
If you have custom markers set onto you page you can get their pixel position with this function:
getPosition: function (marker) {
var map = this.map /* Your map, in my case is part of my controller object linked to this.map */;
var scale = Math.pow(2, map.getZoom());
var nw = new google.maps.LatLng(
map.getBounds().getNorthEast().lat(),
map.getBounds().getSouthWest().lng()
);
var worldCoordinateNW = map.getProjection().fromLatLngToPoint(nw);
var worldCoordinate = map.getProjection().fromLatLngToPoint(marker.getPosition());
var pixelOffset = new google.maps.Point(
Math.floor((worldCoordinate.x - worldCoordinateNW.x) * scale),
Math.floor((worldCoordinate.y - worldCoordinateNW.y) * scale)
);
return pixelOffset; /* Returns the top left pixel of the specified marker on the specified map */
}
And then I use a setPosition function which is used when the window is dragging, it sets your custom element's position to the marker's position.
The dragging event can be set in such manner:
google.maps.addEventListener(map,'drag',function () { setPosition(marker,element); });
The setPosition Function simply gathers the width,height of the element, and the pixel offset associated to the marker using the getPosition(marker) function:
setPosition: function (marker,element) {
var p = this.getPosition(marker),
s = {width:element.offsetWidth,height:element.offsetHeight},
markerOffset = {width:58,height:58};
element.style.left = p.x - (s.width/2) + (markerOffset.width/2) + "px"; /* We set the element's left position to the marker's position + half of our element's width + half of the marker's width's so it is centered */
element.style.top = p.y - s.height - (markerOffset.height) + 10 + "px"; /* We set the element's top position to the marker's position + our element's height + markers height so it is 10px above our marker vertically */
},
Sometimes you just have to think a bit outside the box
That example is using the second version of google maps. That features might not be available in the 3rd one.
But you can add any html code in the infowindows and personalize them. I'm not sure if you can change how they look directly, but you can definitely change how the content looks like.
Edit: I found some sample code: http://gmaps-samples-v3.googlecode.com/svn/trunk/infowindow_custom/infowindow-custom.html
Take a look at gmaps-utility-library-dev and more specific in the ExtInfoWindow utility and PopupMarker utility
As Sudhir pointed out, the Infobox Plugin is one way to do what you want. I've recently answered a similar question about using the infobox plugin for google maps api 3 and provided a complete example.

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