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)
commit02044396ec93932251ed6c6fc574f7a4d8e1d929
tree9eae63ec8efc121fce966e9d0763141a0767648d
parentd32bb3b69a0e6b22fa3784e72258163c051e3375
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
src/lib/elm_map.c