android - Directions between points on map? -


i need in finding directions between path point

the problem can find bearing, distance , angles between points page helped me lot have latitude , longitude of each point on route

http://www.movable-type.co.uk/scripts/latlong.html

but want know how tell user turn "left" or turn "right" using these equations if used same functionality in language tell me

assuming 0 degrees going forward, 180 degrees going backward, , angles go clockwise 0 360 degrees.

340 - 20:  continue forward 20 - 60:   turn right     60 - 120:  turn right 120 - 160: turn sharply right 160 - 200: turn around 200 - 240: turn sharply left 240 - 300: turn left 300 - 340: turn left

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