Re: [osg-users] Hello and a Couple Quick Getting Started Questions
Jan Ciger wrote: On Mon, Apr 13, 2015 at 11:00 AM, Robert Osfield On the other hand, if your goal is a realtime application with relatively lightweight UI using custom graphics elements that is being rendered by the 3D engine itself, such as a simulator or a game, then it is better to use specialized middleware but there are tools like Coherent UI, Scaleform, libRocket, etc. Regards, Jan -- Post generated by Mail2Forum I do indeed wish to create an application with custom graphics elements as you describe, I'll take a look at these middleware components as well. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63370#63370 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hello and a Couple Quick Getting Started Questions
robertosfield wrote: On 12 April 2015 at 14:52, Jacob Moen There is the osgviewerWX example that illustrates how to integrate OSG with wxWidgets. As a general advice, unless you actually need dialog boxes in your applicaiton I would recommend that you stay away from the complexities that Qt, WxWidgets etc. introduce. If you are writing a pure 3D graphics application like a simulator or game you are far better off just using the OSG's native osgViewer's windowing functionality. osgViewer is fully threaded, something that cannot be said of Qt etc, where threading is a messy after thought. Robert. -- Post generated by Mail2Forum I like this advice.. Thank you very much. I'll stay with osgViewer then!! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63369#63369 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hello and a Couple Quick Getting Started Questions
On 12 April 2015 at 14:52, Jacob Moen jacmoe...@gmail.com wrote: I forgot one thing: It looks like Qt and OSG is really good friends (which is great because I personally love Qt!) osgQt is part of the core, however I would be surprised to learn that there isn't at least one integration for wxWidgets out there. ;) There is the osgviewerWX example that illustrates how to integrate OSG with wxWidgets. As a general advice, unless you actually need dialog boxes in your applicaiton I would recommend that you stay away from the complexities that Qt, WxWidgets etc. introduce. If you are writing a pure 3D graphics application like a simulator or game you are far better off just using the OSG's native osgViewer's windowing functionality. osgViewer is fully threaded, something that cannot be said of Qt etc, where threading is a messy after thought. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hello and a Couple Quick Getting Started Questions
On Mon, Apr 13, 2015 at 11:00 AM, Robert Osfield robert.osfi...@gmail.com wrote: ... osgViewer is fully threaded, something that cannot be said of Qt etc, where threading is a messy after thought. That is perhaps a bit harsh. In general, there is no problem with threading in Qt at all and there is a fairly decent threading library included with it. However, you need to be aware that the GUI library itself is not thread safe (pretty much no GUI libraries are) and if you wish to integrate an external library with Qt, it needs to respect that. Normally you should practically never need to use threads to drive the UI, so that shouldn't be an issue in 99.5% of the cases. The rest is covered by various tools provided by the library, such as asynchronous tasks, networking in the background, etc. I have done a lot of integration of both OSG and Ogre3D with Qt for my work and I have worked with wxWidgets in the past as well. I think the far larger problem with Qt (and also wxWidgets and other big framework type UI libraries) is that these are not really GUI libraries but complete application frameworks. Their programming model is very different from what OSG or simulator/game programmers assume and one can't just cherrypick bits and pieces needed by the application. It is an all or nothing proposition - either you design you application following the design principles of hte framework and then everything works like magic, or you don't and then you can't really use it. These frameworks are all event driven (no busy main loop, application is sitting idle waiting for input instead!), expect to have full control of the top level application event loop (weird things happen if this isn't the case) and often they expect to fully manage OpenGL state too if you are using the provided OpenGL support. These impedance mismatches make things difficult when two libraries with such assumptions meet in a single application. Generally speaking, Qt, wxWidgets and similar are great if you are building an UI-centric desktop application, using standard UI elements and an embedded OpenGL/OSG window. Especially the Qt Designer is very hard to beat when it comes to quickly building the application interfaces. A typical application using this could be perhaps something like a CAD program, mesh visualizer/editor or something like Google Earth (uses Qt). On the other hand, if your goal is a realtime application with relatively lightweight UI using custom graphics elements that is being rendered by the 3D engine itself, such as a simulator or a game, then it is better to use specialized middleware. CEGUI is rather primitive, but there are tools like Coherent UI, Scaleform, libRocket, etc. We have tried to use Qt and its new QML system to render a GUI *inside* of an OSG application (render QML to texture and display using OSG) and while it is possible, it requires a lot of non-trivial hacks because the library is simply not written with such use case in mind at all. I certainly don't recommend this approach. Regards, Jan ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hello and a Couple Quick Getting Started Questions
I forgot one thing: It looks like Qt and OSG is really good friends (which is great because I personally love Qt!) osgQt is part of the core, however I would be surprised to learn that there isn't at least one integration for wxWidgets out there. ;) Cheers, Jacob -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63346#63346 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hello and a Couple Quick Getting Started Questions
I am still trying to get my feet wet in the waters of OSG, but you definitely want to check out OSGRecipes: https://github.com/xarray/osgRecipes The 'integrations' directory is a true godsend! However, you can find the old friend CEGUI in the source for chapter 9: https://github.com/xarray/osgRecipes/tree/master/cookbook/chapter9/ch09_04 If you are really interested in OSG, then I guess it wouldn't be a bad idea to get the book itself. :) It is awesome that the author decided to put the code up on Github. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63344#63344 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hello and a Couple Quick Getting Started Questions
Thank you! Good advice on all counts. I'm on it. :) Cheers, Dave -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63345#63345 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hello and a Couple Quick Getting Started Questions
jacmoe wrote: I am still trying to get my feet wet in the waters of OSG, but you definitely want to check out OSGRecipes: https://github.com/xarray/osgRecipes The 'integrations' directory is a true godsend! However, you can find the old friend CEGUI in the source for chapter 9: https://github.com/xarray/osgRecipes/tree/master/cookbook/chapter9/ch09_04 If you are really interested in OSG, then I guess it wouldn't be a bad idea to get the book itself. :) It is awesome that the author decided to put the code up on Github. In case anyone is interested the osgRecipes seem to need this data (though not called out in the readme (https://github.com/xarray/osgRecipes/blob/master/README)): https://github.com/openscenegraph/osg-data -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63348#63348 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hello and a Couple Quick Getting Started Questions
Hi, I've built 75 of the 78 cookbooks/integrations: 3 failed for reasons that I'll investigate later. I'd like to jump right in to running the samples in the debugger. I'm not a cmake expert, and I'm hoping there is a simple way in cmake or in the osgRecipe solution that it created to point the full set of cookbooks and integrations to the runtime libraries. The OSG runtime libraries are installed in C:\Program Files (x86)\OpenSceneGraph\lib, and the includes are installed in C:\Program Files (x86)\OpenSceneGraph\include. I specified the following two cmake tags to point to these locations: OPENSCENEGRAPH_LIB_DIR OPENSCENEGRAPH_INCLUDE_DIR This resulted in a largely successful build (except for the 3 menioned above). I would have thought it would also suffice in order to then select a project and debug the instance. However when I try to do this, the debugger fails to find key DLL's (example osg100-osgd.dll). I know that I can begin to edit each project in visual studio in order to point the project to the runtime libraries. However I'd like to do this solution wide and preferably through cmake. Do you know offhand if there is a cmake option that will do this? Cheers, Dave -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63347#63347 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
