How might I divide a Google Maps display into an equal number of parts?

Question

I want to divide the map display area into a number of equal parts. For example: 10 parts horizontally and 15 parts vertically, resulting in 150 equal parts.

I do not know if Google Maps support such a thing...

map.getBounds() return the total visible area; so ,

  var bounds = map.getBounds();
alert("main: "+bounds.isEmpty());
  var southWest = bounds.getSouthWest();
  var northEast = bounds.getNorthEast();
  var tileWidth  = (northEast.lng() - southWest.lng()) / 10;
  var tileHeight = (northEast.lat() - southWest.lat()) / 2;

  for (var x=0; x < 10 ; x++)
{
  for (var y=0; y < 2 ; y++)
   {
 var northLat = bounds.getNorthEast().lat () + (tileHeight * y);
 var westLng = bounds.getSouthWest().lng () + (tileWidth * x);
 var southLat = northLat + tileHeight;
 var eastLng = westLng + tileHeight;

            var tileBounds = new GLatLngBounds(new GLatLng(southLat, westLng), new GLatLng(northLat, eastLng));
 alert(tileBounds.isEmpty());

     }
 }

now the problem is tileBounds.isEmpty() returns TRUE !!

I cant able to find where I am missing something !! Any Help !!

Answer 1

I am assuming you are after the region coordinates for the 150 smaller tiles?

map.getBounds () returns a GLatLngBounds object. This includes getSouthWest () and getNorthEast () methods. So from the latitude/longitude values for the bottom left and top right hand corners of the visible map you could derive the coordinates of the set of 150 smaller regions:

• Divide the width (longitude of getNorthEast () - longitude of getSouthWest ()) by 15, to determine tile width.
• Divide the height (latitude of getNorthEast () - latitude of getSouthWest ()) by 10, to determine tile height.
• calculate the coordinates for a particular cell based on it's offset in x and y multiplied by the width and height.

So to instantiate a GLatLngBounds(sw?:GLatLng, ne?:GLatLng) for a particular cell index (x, y):

// bounds is the map.getBounds () result
northLat = bounds.getNorthEast().lat () + (tileHeight * y);
westLng = bounds.getSouthWest().lng () + (tileWidth * x);
southLat = northLat + tileHeight;
eastLng = westLng + tileHeight;

tileBounds = new GLatLngBounds (new GLatLng (southLat, westLng), new GLatLng (northLat, eastLng));