It's all about conversion of units. If the map represents from the left to
right 7.65 to 9.34 and the width of the map is 200, than each pixel is
0.00845 units. Of course with Flash's poor floating point math, you might
want to convert it to whole numbers before you perform your calculations.
!k
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Marcelo
Volmaro
Sent: March 10, 2006 2:28 PM
To: FlashCoders
Subject: [Flashcoders] Math, Maps and problems...
Hi,
I have to make an app that, given a bitmap of a Map (a photo of a city),
and given the georeferences of the upper-left corner and lower-right
corner of that photo, take any group of latitudes/longitudes and draw on
the map that coordinates.
I´ve tried using the Mercator projection formula, but for some reason it
doesn´t work. Probably because i need to interpolate the whole world
size from the given map.
Ideas? Formulas?
Thanks in advance!,
--
_
Marcelo Volmaro
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