On 26 Dec 2013, at 10:58, Yuriy Tymchuk <yuriy.tymc...@me.com> wrote:
> If no one has nothing agains it, I will move this Q/A on StackOverflow. With proper attribution, please do. > Uko > > On 26 Dec 2013, at 11:35, Sven Van Caekenberghe <s...@stfx.eu> wrote: > >> Hi Esteban, >> >> On 26 Dec 2013, at 02:23, Esteban A. Maringolo <emaring...@gmail.com> wrote: >> >>> Answering myself... >>> >>> I found a solution and transcribed it: http://pastebin.com/ThKDXCKK >> >> This is the formula that we have been using for years in Pharo, >> Java[Script], Common Lisp: >> >> distanceBetween: firstPosition and: secondPosition >> "T3GeoTools distanceBetween: 5.33732@50.926 and: 5.49705@50.82733" >> >> | c | >> c := (firstPosition y degreeSin * secondPosition y degreeSin) >> + (firstPosition y degreeCos * secondPosition y degreeCos >> * (secondPosition x degreesToRadians - firstPosition x >> degreesToRadians) cos). >> c := c >= 0 ifTrue: [ 1 min: c ] ifFalse: [ -1 max: c ]. >> ^ c arcCos * 6371000 >> >> This is between WGS84 coordinates. It seems simpler than yours. We have been >> using this page as reference: >> >> http://www.movable-type.co.uk/scripts/latlong.html >> >> Regards, >> >> Sven >> >>> Esteban A. Maringolo >>> >>> >>> 2013/12/25 Esteban A. Maringolo <emaring...@gmail.com>: >>>> Has anybody implemented basic methods/classes to calculate distance >>>> between two points (lat, long) and similar operations? >>>> >>>> Regards, >>>> >>>> Esteban A. Maringolo >>> >> >> > >
