On Oct 17, 11:16 pm, rednoise <[email protected]> wrote: > > I am new here, and I wondering about intersecting routes. What I would > like to do is figure out if different routes intersect each other. I > don't want to see this visually; rather I want to receive an answer > via an API call....
If you are getting your routes via GDirections, you need something visual to comply with the Terms; either a map, or the text directions. > Is this possible? If so, where should I get started for a newbie like > myself? Are there any examples out there? I haven't seen any examples. The API doesn't do this by itself. You need to test each straight-line segment of one route against each straight-line segment of the other. You can do this by finding the graph of both (y=mx+c) and solving the equations simultaneously to give the value of x and y which satisfies both equations. You should be able to speed things up by only testing segments where there is some likelihood they cross -- say where the bounding boxes of each overlap. It's not trivial. -- You received this message because you are subscribed to the Google Groups "Google Maps API V2" 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.
