[PATCH] Add plugin to load projections supported by Proj4J

[joshdoe]

I've started writing a plugin to enable using projections from the Proj4J library [1]. I had it working for one particular projection, EPSG:2924, but I'm trying to generalize it to load any supported projection (almost 4000 at the moment). Proj4J itself isn't stable yet, doesn't support everything its sister project proj.4 supports, and doesn't even have a release yet, but it seemed to work fine for my case.

The code is very ugly right now, and doesn't even work completely, but I wanted to put it somewhere before I got distracted and never got back to it. Hopefully I'll get it cleaned up and working properly soon.

[1]: ​http://trac.osgeo.org/proj4j/

[bastiK]

Do you have an account for the openstreetmap svn? If not, you should try to get one, so you can continue working on your plugin when it has been released. See also #5532.

[joshdoe]

latest snapshot of plugin, seems to be working okay

[joshdoe]

Plugin seems to be working for me, but definitely needs testing. I didn't want to ask for an svn account since this is my first patch, and am guessing I need to prove my worth first.

I've created a short page on the wiki for this plugin:
​http://wiki.openstreetmap.org/wiki/JOSM/Plugins/Proj4J

[joshdoe]

I've added the plugin as attached to the SVN at changeset ​25450. I've got a number of fixes I'll upload later when I get to the machine which has them.