I noticed that the entities displayed on the globe will be redrawn/rendered if I open a dialog within my app, close the dialog, and then move the globe around. Is there something in cesium that resets the globe after regaining focus?
Related
I've encountered this with Chrome on maps using the Javascript API. I don't see this bug (a) on the regular Google Maps page or (b) using Safari.
I can replicate this on Google's basic demo page:
https://developers.google.com/maps/documentation/javascript/examples/map-simple
The problem occurs whenever I spin the mouse wheel quickly. At that point, the mouse wheel zoom stops working (mostly).
Zooming by clicking on the +/- buttons still works fine.
On the demo page above, if you spin the mouse wheel without holding the alt or ⌘ key, it will show a message like "Use ⌘ + scroll to zoom the map". This still appears, so the map doesn't appear to be losing the mouse wheel event itself. (The problem is not limited to maps that require holding down a key, though.)
The mouse wheel zoom also doesn't stop working entirely, it just looks like it's dropping 90% (or more) of the events. If I spin the mouse wheel quickly, the map will usually respond (but will zoom an unpredictable number of levels). If I spin the wheel one tick at a time, eventually one of the ticks will trigger a zoom.
No error or diagnostic messages appear in the console.
The Google map info window will not appear when I click on a marker using the iphone. The same code works on the desktop on Android.
I need the map hidden by default and then loaded in only when the user clicks the view map button as I want to keep the weight of the page down as this is for a mobile site.
The click event handler is being fired as I put an alert on it and it worked. I think it might be something to do with the order of the code when I attacked the click handlers, but thats a guess. Also, when I add draggable: true to the markers the bubble appears but I dont want the markers to be draggable.
I have set up a test page http://www.clawg.co.uk/nearby/testmap.html
A run through of this is:
I scan the DOM for data attributes values which I use to create an array of data that will be used for info windows.
I create a button on the fly that will make the map appear when clicked
When the button is clicked the map api is loaded in if its not already available
The map is then loaded
The markers are positioned on the map
The default marker icons are too small for iphone 4 making them unclickable, so I used a custom marker that was 42x42 in size.
Any ideas on how to bind a click event to an OverlayView in v3 of the GMaps API? The overlays seem to be buried under the map's panes so clicking on the overlay results in just a zoom. I'd ultimately like to bind an infowindow to the overlay but just being able to click it would be a fine start.
Would just changing the z-index be the way to go? I tried this for a little while but couldn't get through all of the nested divs loaded by the map.
This is the demo I'm playing with: dutrack.com/markerShapes.php.
Edit: The overlays on the demo map are the large 'teardrop' icons and the paths. The smaller blue icons are Markers at the moment.
Consider placing your overlays in a different pane so that their z-Index is higher than. According to the documentation, getPanes().floatPane will get you the pane which is above all other map panes.
Also give your overlays a high z-Index so that they appear above other content in this frame.
Then use google.maps.event.addDomListener(..) to attach a click listener to your custom overlay.
I have a web application that needs to display 30,000 markers on a map at the same time. I don't want to use any kind of clustering. I need them to all be displayed.
I also need them to be clickable. The user can click on each point and a popup will come up with information about that point. Even at a low zoom level when there are thousands of markers in a single 256x256 square, the user needs to be able to click on them. It may be cumbersome for the user to click on a point thats bunched up with hundreds of other points, but if there happens to be one marker in the middle of nowhere, I want the user to be able to click on it right there instead of having to zoom in.
How do I do this? I know it's possible because I watched a video on google video where this guy creates a GTileLayerOverlay app that had clickable markers. He didn't explain how it was done though.
Is my only option to just remove the GTileLayerOverlay at high zoom levels and replace it with a true GMarker layer? I really don't want to do that. It seems over engineering to me.
If you were me, how would you go about this?
I found this example is in the Google Maps API Demo Gallery:
Clickable Tile Layer
This example creates a custom map type (GMapType) that shows regional borders and squares for county centers. When the squares are clicked, an info window opens with information about that county. The clickability is accomplished by passing in information about clickable pixel bounds in the cookies attached to the tiles, and doing a client-side check on mouseover for whether the mouse position was within the pixel bounds.
Here's some commentary on his method.
I don't have any experience with GTileLayOverlays, but I believe it is possible to accomplish what you're trying to do without using GMarkers.
Would it be possible to utilize clustering if each cluster could bring up a list of the markers it represents? It seems like having 30,000 markers visible at once would be visually confusing and difficult to navigate .
I am using the Google Maps API to code a campus map for my university. On the main map, when it is being viewed in the "Map" maptype, there is a custom overlay of the campus, which is set (by using GEvent.addDomListener) to be removed when the map is viewed in Satellite or Hybrid mode. When the user gets directions, through my map, to and from the campus, a polyline and 2 markers show up, like normal. When the marker is clicked, a small popup map is display, focused on the area of campus around that particular marker.
I was wondering if anyone knew of a way to set attributes of these mini-popup-maps. I need to extend the event listener to make sure that the overlay gets taken off when the mini map is clicked out of "Map" mode. I also need to be able to set the zoom level for these maps.
Any ideas?
(code can be provided as needed, wasn't really sure what parts would be needed and didn't want to post the whole f'n thing up here.)
Doesn't look like there are any built in options to modify the infoWindow you get from the GDirection markers, but you can explicitly replace the markers once you get them back.
This post describes the process.