On Feb 15, 2:31 pm, Philip <philip-goo...@gladstonefamily.net> wrote: > My site isn't that (although I used the idea). Mine > ishttp://pskreporter.info/pskmap.html > > The difference is that I do a gray slope between day and night (the > level of gray depends on the height of the sun above/below the > horizon).
The twilight zone. (nice!) Still, I think you could achieve the same visual effect with GPolygons, perhaps two instead of one, being one for night and another for twilight, or with four GPolygons you could have each of the three twilight zones, (astronomical, nautical and civilian), and another one for night. If you use canvas, IE cannot show it. The city lights are expensive, yes. Other than that, in the API V3, with the MapType object, you write your own .getTile() method: http://code.google.com/apis/maps/documentation/v3/reference.html#MapType Sample: http://maps.forum.nu/v3/gm_customTiles.html -- Marcelo - http://maps.forum.nu -- Also, my client side getTileUrl figures out which tiles are > entirely day or night and uses a single 'day' or 'night' image for > those locations. > > I also can do the same city lights as daylightmap.com, but those tiles > really burn up the bandwidth (well, only the tiles which have the day/ > night terminator running through them). The all-day tiles are still > clear, and the all-night tiles are static (although each one is > different). If I could use a CANVAS in a tile layer, then I suspect > that I could copy the citylight image tile into the canvas first, and > then do the day/night processing. Since the citylight tiles are static > and can have a long expires set, this won't use nearly as much > bandwidth. > > Philip > > On Feb 15, 5:31 am, Marcelo <marcelo...@hotmail.com> wrote: > > > > > Is this your site?http://www.daylightmap.com/index.php > > That's some strange (nice) tiles! :-) > > > -- > > Marcelo -http://maps.forum.nu > > -- > > > On Feb 15, 11:27 am, Marcelo <marcelo...@hotmail.com> wrote: > > > > On Feb 15, 6:04 am, Philip <philip-goo...@gladstonefamily.net> wrote: > > > > > What I want to be able to do is to render a day/night overlay. I can > > > > do this with tiles but the tiles change every five minutes which means > > > > that the server uses a lot of bandwidth. My goal is to render the day/ > > > > night terminator layer entirely on the client side. > > > > I think I'd just use a GPolygon for that, not tiles, but I haven't > > > given it too much thought. There may be some issues to handle with > > > wrapping at low zoom levels. > > > > -- > > > Marcelo -http://maps.forum.nu > > > -- > > > > > I suspect that > > > > today's PCs are fast enough to make this not too bad. Of course a good > > > > Javascript implementation will help! > > > > > Anyway, the GGroundOverlay allows you to place an image onto the > > > > ground. I want to be able to place tiled canvas objects ..... > > > > > Philip > > > > > On Feb 14, 8:07 pm, Rossko <ros...@culzean.clara.co.uk> wrote: > > > > > > > I'm looking for a class just like GTileLayer that allows me to place > > > > > > arbitrary objects instead of image tiles. > > > > > > What doesn't GGroundOverlay do that you > > > > > need?http://code.google.com/apis/maps/documentation/overlays.html#Ground_O... -- You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to google-maps-...@googlegroups.com. To unsubscribe from this group, send email to google-maps-api+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-maps-api?hl=en.
