[osg-users] osg-conv collada

[Johan Nouvel]

Hello all,

I have the same problem with OSG 2.2.0 or 2.3.6, collada plugin and collada 1.4 dom 1.3.
I've search on collada forum and found 2 things :

1- in the collada_dom source, dae directory, edit the Makefile_PC to add daeRawResolver.cpp and compile as usual.
COLLADA_DOM/src/dae/Makefile_PC:
[...]
# files
SRC                              := dae.cpp \
                                         daeArray.cpp \
                                         daeAtomicType.cpp \
                                         daeDocument.cpp \
                                         daeDom.cpp \
                                         daeElement.cpp \
                                         daeError.cpp \
                                         daeErrorHandler.cpp \
                                         daeIDRef.cpp \
                                         daeMemorySystem.cpp \
                                         daeMetaAny.cpp \
                                         daeMetaAttribute.cpp \
                                         daeMetaChoice.cpp \
                                         daeMetaCMPolicy.cpp \
                                         daeMetaElement.cpp \
                                         daeMetaElementAttribute.cpp \
                                         daeMetaGroup.cpp \
                                         daeMetaSequence.cpp \
======> file to add                     daeRawResolver.cpp \
                                         daeSIDResolver.cpp \
                                         daeStringRef.cpp \
                                         daeStringTable.cpp \
                                         daeURI.cpp \
                                         domAny.cpp

[...]


2- in OpenSceneGraph-build-tree/src/osgPlugins/dae/CMakeFiles/osgdb_dae.dir directory you have a file named
"link.txt". This file contains the link command to produce osgdb_dae.so from all object file. For some reasons all the 
collada the collada libraries are not here. So I modified this file and run it to produce a new osgdb_dae.so which works 
fine (no more undefined symbol).

old build-U7.04_32/src/osgPlugins/dae/CMakeFiles/osgdb_dae.dir/link.txt:
/usr/bin/c++  -fPIC   -O3 -DNDEBUG  -shared -Wl,-soname,osgdb_dae.so -o ../../../lib/osgPlugins-2.3.6/osgdb_dae.so 
"CMakeFiles/osgdb_dae.dir/daeReader.o" "CMakeFiles/osgdb_dae.dir/daeRGeometry.o" 
"CMakeFiles/osgdb_dae.dir/daeRMaterials.o" "CMakeFiles/osgdb_dae.dir/daeRSceneObjects.o" 
"CMakeFiles/osgdb_dae.dir/daeRTransforms.o" "CMakeFiles/osgdb_dae.dir/daeWGeometry.o" 
"CMakeFiles/osgdb_dae.dir/daeWMaterials.o" "CMakeFiles/osgdb_dae.dir/daeWriter.o" 
"CMakeFiles/osgdb_dae.dir/daeWSceneObjects.o" "CMakeFiles/osgdb_dae.dir/daeWTransforms.o" 
"CMakeFiles/osgdb_dae.dir/domSourceReader.o" "CMakeFiles/osgdb_dae.dir/ReaderWriterDAE.o" -LSOMEPATH -lOpenThreads -losg 
-losgDB -losgUtil -lcollada_dom -lcollada_dae -lxml2 -lpcrecpp -Wl,-Bstatic -lcollada_dom -Wl,-Bdynamic -losg -lm 
-lOpenThreads -lpthread -lGLU -lGL -lSM -lICE -lX11 -lXext -Wl,-rpath,SOMEPATH

new command to build osgdb_dae.so:
/usr/bin/c++  -fPIC   -O3 -DNDEBUG  -shared -Wl,-soname,osgdb_dae.so -o osgdb_dae.so *.o -LSOMEPATH -lOpenThreads -losg 
-losgDB -losgUtil -lcollada_dae -lcollada_dom -lcollada_dae -lcollada_STLDatabase -lcollada_stdErrPlugin 
-lcollada_LIBXMLPlugin -lxml2  -Wl,-Bstatic -lcollada_dom -Wl,-Bdynamic -losg -lm -lOpenThreads -lpthread -lGLU -lGL 
-lSM -lICE -lX11 -lXext -Wl,-rpath,SOMEPATH
note that -lcollada_dae is include twice as specified in collada forum.

I'm sure it is possible to modify CMAKE to do the right things, but I'm not CMAKE fluent and it is scheduled that all 
this will die with collada DOM 2.0 and OSG 2.4.

Hope this will work for you,
Johan.

skunkwerk a écrit :
> thanks Jason,
>    here's the output - it seems that it eventually finds the plugin, but 
> dlopen complains about an undefined symbol in the osgdb_dae.so file - 
> how can I fix this?
> 
> RegisterWindowingSystemInterfaceProxy()
> X11WindowingSystemInterface()
> GraphicsContext::setWindowingSystemInterface() 0x8063520        0xb7f44bd0
> itr='/usr/lib/'
> FindFileInPath() : trying /usr/lib/osgdb_dae ...
> itr='/usr/local/lib/'
> FindFileInPath() : trying /usr/local/lib/osgdb_dae ...
> DynamicLibrary::getLibraryHandle( osgdb_dae) - dlopen(): ./osgdb_dae: 
> cannot open shared object file: No such file or directory
> DynamicLibrary::failed loading "osgdb_dae"
> itr='/usr/lib/'
> FindFileInPath() : trying /usr/lib/osgPlugins-2.2.0/osgdb_dae.so ...
> itr='/usr/local/lib/'
> FindFileInPath() : trying /usr/local/lib/osgPlugins-2.2.0/osgdb_dae.so ...
> FindFileInPath() : USING /usr/local/lib/osgPlugins-2.2.0/osgdb_dae.so
> DynamicLibrary::getLibraryHandle( 
> /usr/local/lib/osgPlugins-2.2.0/osgdb_dae.so) - dlopen(): 
> /usr/local/lib/osgPlugins-2.2.0/osgdb_dae.so: undefined symbol: 
> _ZN15daeLIBXMLPluginC1Ev
> DynamicLibrary::failed loading "osgPlugins-2.2.0/osgdb_dae.so"
> Warning: Could not find plugin to read objects from file 
> "/home/imran/3d/3dwarehouse/45/models/45.dae".
> Error no data loaded.
> ~RegisterWindowingSystemInterfaceProxy()
> GraphicsContext::setWindowingSystemInterface() 0        0xb7f44bd0
> 
> appreciate it
> 
> On Mon, Mar 24, 2008 at 8:28 AM, Jason Daly <jdaly at ist.ucf.edu 
> <mailto:jdaly at ist.ucf.edu>> wrote:
> 
>     skunkwerk wrote:
>      > thanks Jason, once I ran ccmake . I was able to configure the
>      > environment variables correctly.
>      > the plugin seems to have been installed to
>      > /usr/local/lib/osgPlugins-2.2.0/osgdb_dae.so
>      > yet I can't get osgconv to find it - i've tried -e dae, -l osgdb_dae,
>      > -l /usr/local/lib/osgPlugins-2.2.0/osgdb_dae.so but none of them
>      > work.  how do i get osgconv to load the library?
> 
>     You might need to set your OSGNOTIFY environment variable to DEBUG and
>     see why osgconv isn't finding it.
> 
>     --"J"
> 
> 
> 
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> 
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Johan Nouvel, R&D Project Manager
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