map: fix scale calculation error
authorSung-Taek Hong <sth253.hong@samsung.com>
Fri, 1 May 2015 05:34:11 +0000 (14:34 +0900)
committerCarsten Haitzler (Rasterman) <raster@rasterman.com>
Fri, 1 May 2015 05:34:11 +0000 (14:34 +0900)
commit058fbcca591fa85c29aea43ec4b9ba65366fea58
tree8c704ba02481e7ac1128516827a5c1e5192d373c
parentfb54e83a55e48c684224725c6a5298ac47e770fc
map: fix scale calculation error

Summary:
As the map shows the nearer to the equator,
the scale of the map should be smaller.

In elm_map, the opposite happens because
meters per pixel was miscalculated.
Thus, calculation is corrected
http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Resolution_and_Scale
@fix

Reviewers: seoz, woohyun, Hermet

Differential Revision: https://phab.enlightenment.org/D2426
legacy/elementary/src/lib/elm_map.c