OccJava is a Java wrapper for a small subset of Opencascade libraries
based on swig (www.swig.org).

This library is needed to run the CAD module of jCAE. It require Swig,
CMake, OCCT (http://www.opencascade.org) or OCE (https://github.com/tpaviot/oce).

Swig and CMake can be installed on Debian/ubuntu with:
apt-get install swig cmake

Build OCE from source (https://github.com/tpaviot/oce/wiki/Build) or install OCCT.
If you build OCE you can disable X11 support in CMakeCache.txt:
OCE_DISABLE_X11:BOOL=ON

Then to build occjava:

$ mkdir occjava-linux-build
$ cd occjava-linux-build
$ cmake -DOCE_DIR=/path/to/oce/lib/oce-0.7.0-dev /path/to/occjava (for OCE)
or
$ cmake -DOCC_INCLUDE_PATH=/path/to/occt/inc -DOCC_LIB=/path/to/occt/lib /path/to/occjava
$ make

Build the jcae-sources/jcae/occjava project from netbeans
If you intend to build the occjava netbeans module set path.occ.linux and path.occ.win32
in jcae/nbproject/private/private.properties to /path/to/occjava-linux-build/libOccJava.so
and /path/to/occjava-win32-build/OccJava.dll

About OCE and OCCT
------------------
jCAE developers now use OCE and no longer test OccJava with OCCT. Anyway as OCE and OCCT
are very close OccJava should keep working with both.

Mixing libstdc++5 and libstdc++6 (outdated)
--------------------------------
Starting from version 0.14.1+r1221 (2007-05-10), using the same g++ version for
OpenCASCADE and occjava is required. This is due to the addition of STL iostream
binding. The official binaries of OpenCASCADE 6.2 are built with g++-3.3. If
you get this compilation warning:
ld: warning: libstdc++.so.5, needed by XXXXXX, may conflict with libstdc++.so.6
occjava will crash as soon as you will use the iostream binding.

Note (outdated)
----
The wrapper may not compile properly with -O2. -fno-strict-aliasing
is required with -O2. See:
 http://sourceforge.net/mailarchive/forum.php?thread_id=9715058&forum_id=46758
 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21920

How to add class and methods (draft)
----------------------------
- Find the src/*.i file you want to modify or add a new one (grep ;) )
- Copy method/class definition from Opencascade header
- For Geom_Geometry and Geom2d_Geometry: Change Handle(aType) to Handle_aType

Required OpenCASCADE libraries (probably outdated)
------------------------------
The whole OpenCASCADE bundle is not require to use OccJava. Here is the list
of required libraries.

On Linux:
libTKBO.so
libTKBRep.so
libTKernel.so
libTKFillet.so
libTKG2d.so
libTKG3d.so
libTKGeomAlgo.so
libTKGeomBase.so
libTKIGES.so
libTKMath.so
libTKMesh.so
libTKOffset.so
libTKPrim.so
libTKShHealing.so
libTKSTEP209.so
libTKSTEPAttr.so
libTKSTEPBase.so
libTKSTEP.so
libTKTopAlgo.so
libTKV2d.so
libTKV3d.so
libTKXSBase.so

On Windows:
TKBO.dll
TKBool.dll
TKBRep.dll
TKernel.dll
TKFillet.dll
TKG2d.dll
TKG3d.dll
TKGeomAlgo.dll
TKGeomBase.dll
TKIGES.dll
TKMath.dll
TKMesh.dll
TKOffset.dll
TKPrim.dll
TKShHealing.dll
TKSTEP209.dll
TKSTEPAttr.dll
TKSTEPBase.dll
TKSTEP.dll
TKTopAlgo.dll
TKV2d.dll
TKV3d.dll
TKXSBase.dll