1
vote
1answer
630 views

Creating a openstreetmap renderer in android

I am trying to learn how the openstreetmap is rendered in android. There are already some tools out there that are rendering the maps. Specially I am focusing on offline maps renderer. There is one ...
3
votes
3answers
806 views

GPS device taking pictures and saving heading + HDOP?

I'm looking for a device that can do all of the following: Take picture Save lat-long GPS position + heading (angle to North) of picture [so need tilt-compensated 3D compass], in exif or other ...
6
votes
3answers
2k views

How to find a point half way between two other points?

I'm working on implementing the OSM Mobile Binary format for map data, and because it uses a 16 bit delta for each point along a way, it cannot represent a way if there is a large distance between two ...