hi, I already told you my problem (see the third post). At the moment, I'm developing local, so I can't give you a link - sorry.
But what about this: I would need the following: Imagine, I start my application, with default zoom level 13 (let's call this setting area1). I make my first requests to the server, erverything works fine. Now the user zooms out. As a result he sees "more", ok less details, but more (let's call this area2). How can I determine the amount of pixel between area1 and area2? On Aug 25, 1:09 pm, Marcelo <[email protected]> wrote: > On Aug 25, 11:46 am, "in.gogle.i.trust" <[email protected]> > wrote: > > > ok, thanks, now it seems to be a little bit clearer. but how can that > > help me? > > How can I know how it can help you? I'm only answering your questions. > > Please follow the group's posting > guidelines:http://groups.google.com/group/Google-Maps-API/web/suggested-posting-...http://groups.google.com/group/Google-Maps-API/web/why-including-a-li... > > Post a link, (NOT code)! Long explanations are a waste of time. > > -- > Marcelo -http://maps.forum.nu > -- > > > My first thought after reading your explanation was, that I simply > > subtract the values > > calculated from fromLatLngToPixel(ne, 13) and fromLatLngToPixel(ne, > > 12). but that > > don't worked. The result is still to big. > > > because if I would know, how many pixel are now "more" on the map that > > would solve > > my problem. > > > On Aug 25, 11:32 am, Marcelo <[email protected]> wrote: > > > > The values you get are *map* pixel values, as opposed to *div* pixel > > > values. > > > > At zoom level 0, the entire world fits in one tile of 256x256 pixels. > > > At zoom level 1, 2x2 tiles of 256x256 each, so the world has 512x512 > > > pixels. > > > At zoom level 3, 4x4 tiles, so the world has 1024x1024 pixels. > > > ... and so on. > > > > At zoom level 13, the world has Math.pow(2,13) * Math.pow(2,13), which > > > is 8192 x 8192 pixels. > > > > -- > > > Marcelo -http://maps.forum.nu > > > -- > > > > On Aug 25, 9:35 am, "in.gogle.i.trust" <[email protected]> > > > wrote: > > > > > Hi, > > > > ok I need help with your advice. I don't understand what the method > > > > really does. I arranged to get a GProjection instance of my currently > > > > used map. > > > > something like: > > > > var mapType = map.getCurrentMapType(); > > > > var proj = mapType.getProjection(); > > > > > ok, now I get the acutal lat/lng bounds of the visible area with > > > > map.getBounds(). > > > > > var ne = bounds.getNorthEast(); > > > > and when I call proj.fromLatLngToPixel(ne, 13); I get rather big > > > > return values. Maybe they are right, but I have no idea what they mean > > > > or the function calucaltes. The API explanation for this is not > > > > overwhelming. > > > > > On Aug 25, 7:08 am, "in.gogle.i.trust" <[email protected]> > > > > wrote: > > > > > > hi, > > > > > thank you, that was exactly what I need! > > > > > best regards > > > > > > On Aug 24, 5:58 pm, Marcelo <[email protected]> wrote: > > > > > > > On Aug 24, 4:59 pm, "in.gogle.i.trust" <[email protected]> > > > > > > wrote: > > > > > > > > Now when I don't zoom, just drag the map, everything works fine. > > > > > > > But > > > > > > > when I change the zoom level (e.g. I zoom out) => I see "more" on > > > > > > > the > > > > > > > screen. But the function > > > > > > > fromDivPixelToLatLng doesn't change the output, because I don't > > > > > > > move > > > > > > > the card, just zoom. However now the wrong areas are affected and > > > > > > > the > > > > > > > wrong thing will be drawn to the map. > > > > > > > Aha! :-) > > > > > > ... but that's because you're using *DIV* pixels, and the <div> > > > > > > holding the map does not change. > > > > > > What you probably want is fromLatLngToPixel(latlng,zoom) and > > > > > > fromPixelToLatLng(pixel,zoom), without the 'DIV' part: > > > > > > >http://code.google.com/apis/maps/documentation/reference.html#GMercat... > > > > > > > -- > > > > > > Marcelo -http://maps.forum.nu > > > > > > -- > > > > > > > > So I need to a function fromDivPixelToLatLng(point, zoomLevel). > > > > > > > Is it > > > > > > > now clear to you? > > > > > > > > On Aug 24, 4:22 pm, Marcelo <[email protected]> wrote: > > > > > > > > > I'd suggest that you describe the goal, not the > > > > > > > > step:http://www.catb.org/%7Eesr/faqs/smart-questions.html#goal > > > > > > > > > I can't imagine what you possibly could want that for. > > > > > > > > > -- > > > > > > > > Marcelo -http://maps.forum.nu > > > > > > > > -- > > > > > > > > > On Aug 24, 3:57 pm, "in.gogle.i.trust" > > > > > > > > <[email protected]> > > > > > > > > wrote: > > > > > > > > > > Hi > > > > > > > > > I have a question. I would need the function > > > > > > > > > "fromDivPixelToLatLng" > > > > > > > > > but with an additional parameter, namely the zoom-level of > > > > > > > > > the card. > > > > > > > > > Can anybody help me? > > > > > > > > > In other words, something like fromDivPixelToLatLng(point, > > > > > > > > > zoomLevel) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
