I haven't had a chance to work with that part yet, but I'd recommend reading the main link I provided so you get a good understanding of what your going to be working with and the relation of your lat/lng to tile and pixel positioning, as well as the mercator projection scheme.
Your going to need a basic understanding of that before you can really approach and understand what you are going to be trying to accomplish from what it seems. After you have that there are several examples around that will help. On Fri, Oct 15, 2010 at 4:03 PM, spyro.boy <spyro....@gmail.com> wrote: > er, what I mean is the creation of the projection object and how to > integrate it with a map object. I'm not sure how to do that. > > On Oct 15, 5:02 pm, "spyro.boy" <spyro....@gmail.com> wrote: > > with regard to the MapCanvasProjection object, I'm not sure how to use > > it. I've seen it used in other posts but I could never get it working. > > mind helping me with that much before I try my hand with what I've > > read in the article you linked? > > > > On Oct 15, 11:01 am, Nathan Raley <nlrale...@gmail.com> wrote: > > > > > And more towards what you are looking for do a serach for: > > > MapCanvasProjection object specification > > > > > In the google documentation. It shows you some of the translation > > > functions. > > > > > On Fri, Oct 15, 2010 at 9:59 AM, Nathan Raley <nlrale...@gmail.com> > wrote: > > > > Also take a look at: > > > > > > > http://code.google.com/apis/maps/documentation/javascript/reference.h... > > > > > > On Fri, Oct 15, 2010 at 9:58 AM, Nathan Raley <nlrale...@gmail.com> > wrote: > > > > > >> I could go very in depth with this but I found an article that more > or > > > >> less sums it up. Take a look here and let me know if you have any > > > >> questions. It is one for bing maps but it uses the same projection > so you > > > >> can use the same code: > > > >>http://msdn.microsoft.com/en-us/library/bb259689.aspx > > > > > >> <http://msdn.microsoft.com/en-us/library/bb259689.aspx>Google's API > has a > > > >> lot of these functions built in to it so you can retrieve them a lot > easier. > > > >> But the math stays the same. > > > > > >> Let me know if you have any questions. > > > > > >> On Fri, Oct 15, 2010 at 9:55 AM, spyro.boy <spyro....@gmail.com> > wrote: > > > > > >>> yes, very much. I've tried all sorts of things and I've pretty much > > > >>> given up, but if you can help, it'd be very much appreciated. > > > > > >>> On Oct 14, 10:33 am, Nathan Raley <nlrale...@gmail.com> wrote: > > > >>> > Are you having problems with the conversion from lat/lng to Pixel > X,Y > > > >>> and > > > >>> > Tile X,Y? If so let me know and I can offer some help. > > > > > >>> > On Wed, Oct 13, 2010 at 4:20 PM, spyro.boy <spyro....@gmail.com> > > > >>> wrote: > > > >>> > > alright so, since posting I've tried my hand at this and the > code > > > >>> > > seems different. I'll just re-establish things in a clearer > way. > > > > > >>> > > I've generated a set of 256x256 tiles from a very large image > > > >>> (approx. > > > >>> > > 7000x3000) . the file naming convention is tile-ZOOM-X-Y.png. > getting > > > >>> > > the google maps api to display these tiles as a base map wasn't > > > >>> > > difficult. > > > > > >>> > > the things I'm trying to accomplish now is figuring out how to > center > > > >>> > > the map based on a pixel coordinate of the original image (i.e. > the > > > >>> > > 7000x3000 unsplit image) mapped to the tiled google map. > > > > > >>> > > a second thing I'd like to figure out is how to stop the map > from > > > >>> > > going into areas that tiles don't exist. if this has to be > controlled > > > >>> > > by a constant, that's fine. i.e. if I have 50 tiles width-wise, > I > > > >>> > > don't want it to move past the 50th tile, or past the 0th tile. > same > > > >>> > > with the vertical. > > > > > >>> > > I've put a conditional in the getTileUrl that just checks if > coord.x > > > >>> > > (or y) is less than 0, but internally the google map still > thinks > > > >>> it's > > > >>> > > in the negative range. I can't imagine moving back into the the > > > >>> > > positives will do any good with that conditional in place. > > > > > >>> > > I've read the API reference and the tutorials and none of it > seems > > > >>> > > very clear to me. > > > > > >>> > > -- > > > >>> > > You received this message because you are subscribed to the > Google > > > >>> Groups > > > >>> > > "Google Maps JavaScript API v3" group. > > > >>> > > To post to this group, send email to > > > >>> > > google-maps-js-api...@googlegroups.com. > > > >>> > > To unsubscribe from this group, send email to > > > >>> > > google-maps-js-api-v3+unsubscr...@googlegroups.com<google-maps-js-api-v3%2bunsubscr...@googlegroups.com> > <google-maps-js-api-v3%2bunsubscr...@googlegroups.com<google-maps-js-api-v3%252bunsubscr...@googlegroups.com> > > > > > >>> <google-maps-js-api-v3%2bunsubscr...@googlegroups.com<google-maps-js-api-v3%252bunsubscr...@googlegroups.com> > <google-maps-js-api-v3%252bunsubscr...@googlegroups.com<google-maps-js-api-v3%25252bunsubscr...@googlegroups.com> > > > > > > > >>> > > . > > > >>> > > For more options, visit this group at > > > >>> > >http://groups.google.com/group/google-maps-js-api-v3?hl=en. > > > > > >>> -- > > > >>> You received this message because you are subscribed to the Google > Groups > > > >>> "Google Maps JavaScript API v3" group. > > > >>> To post to this group, send email to > > > >>> google-maps-js-api...@googlegroups.com. > > > >>> To unsubscribe from this group, send email to > > > >>> google-maps-js-api-v3+unsubscr...@googlegroups.com<google-maps-js-api-v3%2bunsubscr...@googlegroups.com> > <google-maps-js-api-v3%2bunsubscr...@googlegroups.com<google-maps-js-api-v3%252bunsubscr...@googlegroups.com> > > > > > >>> . > > > >>> For more options, visit this group at > > > >>>http://groups.google.com/group/google-maps-js-api-v3?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Google Maps JavaScript API v3" group. > To post to this group, send email to > google-maps-js-api...@googlegroups.com. > To unsubscribe from this group, send email to > google-maps-js-api-v3+unsubscr...@googlegroups.com<google-maps-js-api-v3%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-maps-js-api-v3?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. 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