Thank you for your response. I am doing something similar for determining when a waypoint is reached. I was hoping for something simpler, that is all. On Nov 29, 2011 10:46 PM, "Spiral123" <[email protected]> wrote:
> well.... > > 2. is just geometry and math. Assuming that your http requests > results in some kml that includes a polyline then personally I would > build an array containing each line and then just work out the closest > distance to each one from my current location every x seconds or y > feet travelled. > > If you are further than a certain distance (which you have to decide) > from ALL of the lines then you know that the user has taken a detour > and you should simply resubmit a new routing request starting at your > current location and ending at the original location. > > unless your kml has hundreds of polylines I'm not sure I'd even bother > optimize the algorithm - just brute force it. > > > I would be a little careful of what your app does though: you might > want to read the Maps TOS license restrictions carefully to make sure > you stay within them. > > > On Nov 29, 9:49 pm, James Black <[email protected]> wrote: > > Hello, > > I am working on a navigation program and I have two things that could > > make my program better. > > > > 1. How can I find alternate routes. > > > > I use this url currently: > http://maps.google.com/maps?f=d&hl=en&saddr=xxx,zzz&daddr=yyy,www&ie=... > > > > 2. How can I tell when the user takes a detour from the path on the > > MathOverlay, so I can get a new route for them? > > > > Thank you. > > > > -- > > "I know that you believe you understand what you think I said, but I'm > not > > sure you realize that what you heard is not what I meant." > > - Robert McCloske > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" 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/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" 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/android-developers?hl=en
