Thanks Robert,
Robert Osfield wrote:
Hi Hartmut,
On 1/22/07, Hartmut Seichter <[EMAIL PROTECTED]> wrote:
I am currently reworking our osgART project to be more OSG conform. One
path I would like to pursue is to let it load and save AR scenes like
osgSim and/or osgFX. However, I am a bit stuck with getting osgDB
loading my osgdb_osgART.dll part (emptied parts of osgSim in there). It
finds the dll but log messages tell (running osgviewer with a osgART::*
node):
FindFileInPath() : trying C:\Program
Files\OpenSceneGraph\bin/osgdb_osgART.dll ...
FindFileInPath() : USING C:\Program
Files\OpenSceneGraph\bin/osgdb_osgART.dll
DynamicLibrary::failed loading "osgdb_osgART.dll"
The fact that its looking for osgdb_osgART is a good thing, that does
at least suggest the naming is correct. I can't say what it might
have failed though. Best guess would be to check the compile settings
to ensure that they are the same as the OSG's i.e. multi-threaded
dll's etc.
I now also copied the project file from osgSim (converted to VS 2003
.NET) but still same result. The compile setting are the same.
One thing I was wondering is that the DLLs don' t have a DLL entry point
(DLLmain). so how does osgFX or osgSim get loaded through LoadLibrary
when there is no entry point?
The plugins have a global proxy object that is automatically
constructed when the library is loaded, this proxy object registers
the custom ReaderWriter* class with the osgDB::Registry.
Mhh, I am still stuck. Thats what I do (or think I am doing) ... the
only source file in the project:
#include <osgART/GenericVideo>
#include <osgART/VideoManager>
#include <osgDB/Registry>
#include <osgDB/Input>
#include <osgDB/Output>
// forward declare functions to use later.
bool GenericVideo_readLocalData(osg::Object& obj, osgDB::Input& fr);
bool GenericVideo_writeLocalData(const osg::Object& obj, osgDB::Output& fw);
// register the read and write functions with the osgDB::Registry.
osgDB::RegisterDotOsgWrapperProxy VideoContainer_Proxy
(
new osgART::VideoContainer,
"VideoContainer",
"Object VideoContainer",
&GenericVideo_readLocalData,
&GenericVideo_writeLocalData,
osgDB::DotOsgWrapper::READ_AND_WRITE
);
bool GenericVideo_readLocalData(osg::Object& obj, osgDB::Input& fr)
{
bool iteratorAdvanced = false;
/*
load things here
*/
return iteratorAdvanced;
}
bool GenericVideo_writeLocalData(const osg::Object& obj, osgDB::Output& fw)
{
/* implement stuff here :) */
return true;
}
I try to load a .osg file with following content:
Group {
DataVariance DYNAMIC
nodeMask 0xffffffff
cullingActive TRUE
num_children 1
osgART::VideoContainer {
Source "osgart_artoolkit"
}
}
Thanks for any hint in advance,
Hartmut
Robert,
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