Erlang binding for geometry libraries
Erlang C Perl
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README.md

Build it with:

make

Run tests with:

make check

Here's an example session in the erlang shell. See the src/erlgeom.erl file for more examples.

$ erl -pa ebin
Erlang R14B03 (erts-5.8.4) [source] [64-bit] [smp:4:4] [rq:4] [async-threads:0] [kernel-poll:false]

Eshell V5.8.4  (abort with ^G)
1> Geom1 = erlgeom:to_geom({'Point',[5,5]}).
geom: POINT (5.0000000000000000 5.0000000000000000)
<<>>
2> Geom2 = erlgeom:to_geom({'LineString', [[1,1],[14,14]]}).
geom: LINESTRING (1.0000000000000000 1.0000000000000000, 14.0000000000000000 14.0000000000000000)
<<>>
3> erlgeom:disjoint(Geom1, Geom2).
false
4> Geom3 = erlgeom:to_geom({'Point', [2.5,65.7]}).
geom: POINT (2.5000000000000000 65.7000000000000028)
<<>>
5> erlgeom:disjoint(Geom1, Geom3).
true
6>

On Windows

You need to have GEOS installed, let's say it was installed to C:\cygwin\opt\couchbase.

Open a shell which has all compilers and the MSVC environment set up (e.g. the Windows SDK 7.1 Command Prompt).

Now set it up so that GEOS and Erlang can be found:

SET INCLUDE=%INCLUDE%;C:\cygwin\opt\couchbase\include
SET LIB=%LIB%;C:\cygwin\opt\couchbase\lib
SET PATH=%PATH%;C:\cygwin\opt\couchbase\bin;C:\erl5.9.1\bin

And finally compile the whole thing:

rebar compile