1 == Halcyon and Potlatch 2.0 - ActionScript 3 renderer and editor ==
3 Potlatch 2.0 is the new version of the OpenStreetMap online editor.
5 Halcyon is its rendering engine. It's rules-based (like, say, Mapnik) and does dotted lines, text on a path, casing, icons for POIs, all of that.
7 Both are written in ActionScript 3. Potlatch 2.0 additionally uses the Flex framework.
9 Many icons used in halcyon/potlatch2 are based on the awesome CC0-licensed SJJB icons project. http://www.sjjb.co.uk/mapicons/
11 === What you'll need ===
14 ** Product page: http://www.adobe.com/products/flex/
15 ** Flex 3 Download page: http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+3 (free, OS X/Windows/Linux)
16 * AS3 docs - http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/
17 * Flash debug player - http://www.adobe.com/support/flashplayer/downloads.html
18 * Basically you might as well just sell your soul to Adobe
21 ***Do not use FlexSDK <= 3.3 or > 4***. There are compatibility errors with version 4, and 3.3
22 and earlier have this bug: http://bugs.adobe.com/jira/browse/SDK-16705 which is a major issue for the
25 If you happen to have Adobe Flex Builder 3/Flash Builder 4, you can create a project and import files into it.
26 See http://wiki.openstreetmap.org/wiki/Potlatch_2/Developer_Documentation for details.
28 You'll only need OSM Rails port installed on your local machine if you are doing hard-core
29 server-communication coding, but if generally you can use the dev server at api06.dev.openstreetmap.org
30 for development and testing.
33 === How to compile and run ===
37 1) Copy the properties template file
38 cp build.properties.template build.properties
40 2) Edit the FLEX_HOME variable in build.properties
41 eg, FLEX_HOME=c:/flex_sdk/3.5.0.12683
45 The following command will compile potlatch2 in debug configuration
46 The result is put at resources/potlatch2.swf
50 The following command will compile potlatch2 in release configuration
54 Compiling Halcyon as standalone viewer:
58 You can create class documentation (in resources/docs) using asdoc
62 You can create and run the unit tests (not that there are that many) using flexunit
66 If you're using Mac OS X, you may need to tell ant to use more memory, by
67 typing export ANT_OPTS=-Xmx500M beforehand (you can put this in your .profile).
70 Compiling during development:
72 Compiling optimized versions from scratch takes a _long_ time. There are
73 several ways to make it faster during development and also add useful
74 debug stack traces and enable the commandline debugger (at the expense
75 of a much larger swf file.. but we're developing so that doesn't matter!).
78 - launches the Flex Compiler SHell -- stops the compiler having to
79 bootstrap itself each time you invoke it. You don't /need/ this, but it
80 does make things slightly faster (about a second a shot for me)
82 * mxmlc -load-config+=debug-config.xml potlatch2.mxml
83 - compile potlatch2 in debug configuration -- build is incremental so you
84 can run it again and mxmlc will only compile changes. Output has debug
85 enabled along with decent stack traces.
86 (you can substitute halcyon_viewer.as in the above to compile that)
89 - when using fcsh recompile the first command
92 - type it again to compile again. You'll really wish that up-arrow,enter
93 worked, but Adobe is laughing at you RIGHT NOW.
96 - if you have it on your system (e.g. linux), rlwrap is a godsend. Launch
97 fcsh with 'rlwrap path/to/fcsh' and up arrows will work, even persistantly
98 across one fcsh session to the next.
102 * Flash security model sucks. If you want to use internet resource (e.g. map calls to the dev
103 server) the binary must have been served from "teh internets". Run resources/server.rb to launch a local
104 server, then go to http://localhost:3333/potlatch2.html to get started (or if you're already running e.g.
105 Apache locally, feel free to use that instead.)
107 Alternatively, you can update your global Flash security settings to "always trust files" in your local dev area:
108 http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04.html
109 Then you can run the swf file directly.
111 * If you are doing offline development, you will need a rails_port install. You
112 will need to add an OAuth application by going to
113 http://rails-port.local/user/<username>/oauth_clients/new
114 Enter the following details (assuming the above point):
115 * Name (Required): Potlatch2 (local)
116 * Main Application URL (Required): http://localhost:3333/resources/potlatch2.html
117 And then update resources/potlatch2.html replacing the domains.
119 === Some other stuff you might need to know ===
121 * Flex compiler runs at about the speed of a tortoise soaked in molasses which happens also to be dead.
122 * Running the debug player helps when coding, since it'll pop up the runtime errors. You don't see them
123 with the normal player.