[osg-users] META_OBJECT
Hi forum,
I am extending a osg::Object as follows:
Code:
class LIBRARY_EXPORT osgOpenCLContext : public osg::Object
{
public:
osgOpenCLContext();
META_OBJECT(osgOpenCL,osgOpenCLContext);
bool setupOsgOpenCLAndViewer(osgViewer::ViewerBase
viewer,
int ctxID = -1);
~osgOpenCLContext();
};
And i am getting the following error among many others:
Code:
[ 62%] Building CXX object
src/osgOpenCL/CMakeFiles/osgOpenCL.dir/osgOpenCLContext.cpp.o
In file included from
/home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:7:0:
/home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:22:16:
error: ‘osgOpenCL’ is not a type
/home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:22:42:
error: ISO C++ forbids declaration of ‘META_OBJECT’ with no type [-fpermissive]
Any idea folks ? i used to know that META_Object and META_Node are just
convenience macro's that help streamline
the writing of subclasses, have a look at their definition to see what they
do. The methods that these macros implement are useful for implementing IO
and other ops that require richer RTTI info that C++ provides by default.
Please fill out if i miss anything in the process
Thank you!
Cheers,
Sajjadul
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[osg-users] osgSim::LighPoint radius
Hi Community, I have faced a problem with the _radius from LighPoint. The showcase is to control all of the LightPoint attributes in run tim (dynamiclly change intensity, color ...these work just fine). However the radius can be changed on LightPoint re-creation,only and its can not be changed in run-time. Some hints? Thanks a bunch. Nick -- trajce nikolov nick ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Exporting HeightFields in OSG
Hi Martin, try exporting to OpenFlight (there are various 3d content creation tools like LightWave, 3D Max, Creator ) that support this format. I am not sure the obj plugin has exporting function although I think I have seen some submissions (from Cedric I think) for the obj format. The extension is flt Hope this helps, Nick On Sat, Apr 27, 2013 at 6:33 PM, Martin Záleta zal...@atlas.sk wrote: Hi, I was hoping I could export a terrain geometry represented by a procedurally generated HeightField into an .obj file or similar, so I could open it as a polygonal mesh in some modelling program or whatever, but sadly, it doesn't seem to work that way. This line Code: writeNodeFile(*terrainTileGeode, ..\\res\\export\\terrain_groundtile.obj); just returns me a rather empty object file, while other geometry I use seems to be exporting just fine. So, is there any way to export HeightFields as polygonal meshes in OSG? My aim is to import these procedural terrains in other rendering engines afterwards, so it would be rather convenient for me. Thank you! Cheers, Martin -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53844#53844 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- trajce nikolov nick ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] META_OBJECT
I'm not sure what META_OBJECT (all caps) is, or where it's defined. Did
you intend to use META_Object from include/osg/Object instead?
One other possible issue I noted: Assuming you intended to use META_Object,
I believe you are required to implement the copy constructor, and I don't
see that in your code...
On Sun, Apr 28, 2013 at 6:38 AM, Sajjadul Islam dosto.wa...@gmail.comwrote:
Hi forum,
I am extending a osg::Object as follows:
Code:
class LIBRARY_EXPORT osgOpenCLContext : public osg::Object
{
public:
osgOpenCLContext();
META_OBJECT(osgOpenCL,osgOpenCLContext);
bool setupOsgOpenCLAndViewer(osgViewer::ViewerBase
viewer,
int ctxID = -1);
~osgOpenCLContext();
};
And i am getting the following error among many others:
Code:
[ 62%] Building CXX object
src/osgOpenCL/CMakeFiles/osgOpenCL.dir/osgOpenCLContext.cpp.o
In file included from
/home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:7:0:
/home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:22:16:
error: ‘osgOpenCL’ is not a type
/home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:22:42:
error: ISO C++ forbids declaration of ‘META_OBJECT’ with no type
[-fpermissive]
Any idea folks ? i used to know that META_Object and META_Node are just
convenience macro's that help streamline
the writing of subclasses, have a look at their definition to see what they
do. The methods that these macros implement are useful for implementing IO
and other ops that require richer RTTI info that C++ provides by default.
Please fill out if i miss anything in the process
Thank you!
Cheers,
Sajjadul
--
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http://forum.openscenegraph.org/viewtopic.php?p=53846#53846
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Skew Matrix Software LLC
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Re: [osg-users] META_OBJECT
Hi,
If you take a look into the Resource of osgCompute you will also find that they
have declared META_OBJECT as all caps and they have the declared the copy
constructor in the private scope and they are not defined in the source, i find
this strange though.But It compiled fine.
Now i am extending the this plugin and i am having error while trying to
compile the following class. (Now i am including the while class definition).
Code:
#ifndef OSGOPENCL_CONTEXT
#define OSGOPENCL_CONTEXT 1
#include osgOpenCL/osgOpenCLDefines
#include osg/GL
#include osg/ref_ptr
#include osg/Referenced
#include osgViewer/ViewerBase
#include osgCompute/Export
#include osgCompute/Callback
namespace osgOpenCL
{
class LIBRARY_EXPORT osgOpenCLContext : public osg::Object
{
public:
osgOpenCLContext();
META_OBJECT(osgOpenCL,osgOpenCLContext);
bool setupOsgOpenCLAndViewer(osgViewer::ViewerBase
viewer,
int ctxID = -1);
~osgOpenCLContext();
public:
//typedef the list of the device within the context
//IN THIS INITIAL VERSION WE ARE ONLY CONSIDERING ONE
DEVICE ON ONE CONTEXT
//SO COMMENT THE FOLLOWING
//typedef
std::vectorosg::ref_ptrosgOpenCL::osgOpenCLDevice osgOpenCLDeviceList;
//declare the device list
//osgOpenCLDeviceList m_osgOpenCLDeviceList;
//hold the current OpenCL context
cl_context m_clContext;
//hold the current platform id
cl_platform_id m_clPlatform;
//hold the current device id
cl_device_id m_clDevice;
//hold the command queue for the device
cl_command_queue m_clCommandQueue;
private:
// Copy constructor and operator should not be called
osgOpenCLContext(const osgOpenCLContext ,const
osg::CopyOp ) {}
osgOpenCLContext operator=(const osgOpenCLContext) {
return *this; }
};
}
#endif
Any more idea to get around this issue?
Cheers,
Sajjadul
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Re: [osg-users] META_OBJECT
Hi again, I should have posted the whole compilation error in the previous post. Here it goes: Code: sajjad@sajjad-G74Sx:~/Downloads/OpenSceneGraph/osgCompute/osgCompute$ make [ 15%] Built target osgCompute [ 25%] Built target osgCuda [ 32%] Built target osgCudaUtil [ 55%] Built target osgdb_serializers_osgCuda [ 57%] Built target osgCudaStats [ 60%] Built target osgCudaInit [ 62%] Building CXX object src/osgOpenCL/CMakeFiles/osgOpenCL.dir/osgOpenCLContext.cpp.o In file included from /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:10:0: /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:23:16: error: ‘osgOpenCL’ is not a type /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:23:42: error: ISO C++ forbids declaration of ‘META_OBJECT’ with no type [-fpermissive] /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:23:4: error: cannot declare parameter ‘anonymous’ to be of abstract type ‘osgOpenCL::osgOpenCLContext’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:18:23: note: because the following virtual functions are pure within ‘osgOpenCL::osgOpenCLContext’: /usr/local/include/osg/Object:71:25: note: virtual osg::Object* osg::Object::cloneType() const /usr/local/include/osg/Object:75:25: note: virtual osg::Object* osg::Object::clone(const osg::CopyOp) const /usr/local/include/osg/Object:82:29: note: virtual const char* osg::Object::libraryName() const /usr/local/include/osg/Object:86:29: note: virtual const char* osg::Object::className() const /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp: In member function ‘bool osgOpenCL::osgOpenCLContext::setupOsgOpenCLAndViewer(osgViewer::ViewerBase, int)’: /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:103:26: error: expected type-specifier before ‘GraphicsWindowX11’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:103:26: error: expected ‘’ before ‘GraphicsWindowX11’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:103:26: error: expected ‘(’ before ‘GraphicsWindowX11’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:103:26: error: ‘GraphicsWindowX11’ was not declared in this scope /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:103:26: note: suggested alternative: /usr/local/include/osgViewer/api/X11/GraphicsWindowX11:30:24: note: ‘osgViewer::GraphicsWindowX11’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:103:44: error: expected primary-expression before ‘’ token /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:103:50: error: expected ‘)’ before ‘;’ token /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:121:51: error: ‘class osg::GraphicsContext’ has no member named ‘getGLXContext’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgOpenCL/osgOpenCLContext.cpp:122:39: error: ‘class osg::GraphicsContext’ has no member named ‘getDisplay’ make[2]: *** [src/osgOpenCL/CMakeFiles/osgOpenCL.dir/osgOpenCLContext.cpp.o] Error 1 make[1]: *** [src/osgOpenCL/CMakeFiles/osgOpenCL.dir/all] Error 2 make: *** [all] Error 2 Thank you! Cheers, Sajjadul -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53851#53851 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] META_OBJECT
Ah. I see now that you're asking about how to use a macro that is defined in a project external to OSG. Sorry for my confusion. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Exporting HeightFields in OSG
Hi, Sadly, exporting a HeightField geometry into .flt likewise produces just an almost empty file. I kinda suppose it's because the geometry in HeightFields isn't represented by polygonal meshes, so OSG can't really do anything to export this data straight away other that maybe except save those values into an image file like a heightmap. Still, it's just a guess though, so if there's any other way, just let me know. Thanks anyway! Cheers, Martin -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53853#53853 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] META_OBJECT
hi Posting what META_OBJECT defines will help, but the clue is here /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:23:4: error: cannot declare parameter ?anonymous? to be of abstract type ?osgOpenCL::osgOpenCLContext? /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:18:23: note: because the following virtual functions are pure within ?osgOpenCL::osgOpenCLContext?: You have some pure virtual functions somewhere, then other code is trying to allocate an instance of a class with pure virtual functions which is not allowed. Tom -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53855#53855 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] META_OBJECT
Hi all, Those methods are defined by the META_Object macro ( osg/Object header ) Not completely sure because I do not have a great experience with osgCompute, but I used the find utility and can't find META_OBJECT (all capitals) in the osgCompute trunk dir Regards, Martino 2013/4/29 Thomas Hogarth thomas.hoga...@gmail.com hi Posting what META_OBJECT defines will help, but the clue is here /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:23:4: error: cannot declare parameter ?anonymous? to be of abstract type ?osgOpenCL::osgOpenCLContext? /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/include/osgOpenCL/osgOpenCLContext:18:23: note: because the following virtual functions are pure within ?osgOpenCL::osgOpenCLContext?: You have some pure virtual functions somewhere, then other code is trying to allocate an instance of a class with pure virtual functions which is not allowed. Tom -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53855#53855 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
