Re: [osg-users] [osgPlugins] Collada dae plugin for Android OSG
Dear Jorge and Jan, Thanks for your replies... Coincidentally, I initially argued the same point you are both making to my software lead (who is monitoring this thread) that it would be better to export assets to OpenSceneGraph's native data format. He argued in turn that it is important for our platform to be able to load Collada files so that 3rd parties can easily load their own assets without having to export them to .ive or .osgb. Hope you both enjoy the weekend. Oren Jorge Izquierdo Ciges wrote: Jan I agree totally with you. For mobile devices, Android specifically binary file formats tend to work a lot better than plain text derivates that's one of the reason collada was not in my to do list whe we worked on making OSG work in Android. Still, there are projects where you can't take smart optimal decisions and would be cool to know that teorical is works xD Happy weekend!. 2012/9/21 Jan Ciger () On Fri, Sep 21, 2012 at 9:35 AM, Jorge Izquierdo Ciges () wrote: I can't recommend none of them, it's a specific case that wasn't in the things to do list. If there is already a version ported or prepared to be used in Android then maybe just for the sake of your own sanity I would test it. If it works cool, if not... well look into other possibilities. In the root Android is a hyped/javaticed linux with a like for tough compilings but still compatible with the vast majority of the C/C++ source code of open libraries. In the end it's just a matter of time, work and study of the platform, except rare cases. So... as some books say, Have a go hero! And check out with the mail list with your results. While it should be possible to compile the COLLADA DOM for Android, I think Oren would be better off with using another data format. COLLADA is quite a mess of a format, intended for exchange of data between modelling tools, not as an end-user deployment format. You get huge XML files, not something I would want on a mobile device. Use COLLADA to export your stuff from 3DS Max/Blender/Maya (native OSG exporters are better, though) and convert it to e.g. .ive or .osgb for use on the mobile. Smaller files, everything included (textures, shaders, etc.), faster loading - a win-win situation. Regards, Jan ___ osg-users mailing list () http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org (http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org) -- Post generated by Mail2Forum -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50235#50235 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [osgPlugins] Collada dae plugin for Android OSG
Hey everyone, I want to use the collada plugin for my Android app. So I started here: http://www.openscenegraph.org/projects/osg/wiki/Support/KnowledgeBase/Collada This page, which seems a bit outdated, pointed me to use the DOM project here (which is at version 2.2): http://sourceforge.net/projects/collada-dom/files/Collada%20DOM/Collada%20DOM%202.2/ The problem is that this library has a directory with prebuilt binaries for almost every platform except Android. I suppose this means I would have to build these libraries for Android before I use this version of Collada... However, over at https://android.googlesource.com/ there is a version of Collada that already has an Android.mk. My question: What should I do? spend time on trying to build the prereq libs in Collada DOM and get the standard version working OR try to integrate the version of Collada DOM that is provided by the Android git repo's? Thanks! TL;DR: what is easier? trying to build prereq libs OR trying to integrate different lib into plugin? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50215#50215 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Real3D on LG Optimus with OpenSceneGraph 3.0.0
Thanks Robert and Rafa, Looks I had set the display settings on the viewer correctly but I was not actually rendering with the main camera in the scene graph, I only had an ortho2d camera rendering a HUD underneath the root node. Once I had placed some geometry underneath the root node to be rendered by the perspective camera, the stereoscopic display worked properly. When I set the display settings for the ortho2d camera to do stereo, it still did not work. Is that because ortho cameras do not support stereo? thinking about it hurts my head a bit, since ortho does not have a focal point... I ended up creating another camera for the HUD that simply renders everything into the other half of the viewport. Thanks -Oren Ps. Thanks Rafa for referring me to your interesting project, I will definitely check out! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49938#49938 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Real3D on LG Optimus with OpenSceneGraph 3.0.0
I am trying to enable stereoscopic rendering in the osg display settings in order to use the stereoscopic display on the LG optimus. The LG Real3D API expects the framebuffer to be split horizontally so I am enabling stereo rendering like this: Code: osg::DisplaySettings::instance()-setStereo(true); osg::DisplaySettings::instance()-setStereoMode(osg::DisplaySettings::HORIZONTAL_SPLIT); but it doesn't seem to be working. What could be the reason for it not working? Are there any caveats to using the DisplaySettings to enable stereo at a low level? Should I go the way of using two slave cameras and render in two separate viewports in the framebuffer? thanks! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49848#49848 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Real3D on LG Optimus with OpenSceneGraph 3.0.0
well, I stepped through the code in DisplaySettings.cpp and setting those environment variables does the exact same thing as the function calls. also, I am not sure how to set environment variables in android so I don't know how to test it. I want to understand how the rendering changes at the low level when display settings have stereo enabled. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49856#49856 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Framerate Capping in 2.8.2
Hi all,
Here we use osg 2.8.2 and have a requirement to cap the framerate in certain
cases. We found that doing the following caused us to barely reach the
framerate limit, so instead of hitting 30 fps it was around 28.X fps.
Code:
while(!viewer.done())
{
osg::Timer_t startFrameTick = osg::Timer::instance()-tick();
viewer.frame();
osg::Timer_t endFrameTick = osg::Timer::instance()-tick();
double frameTime = osg::Timer::instance()-delta_s(startFrameTick,
endFrameTick);
OpenThreads::Thread::microSleep(static_castunsigned
int(0.95*100.0*(minFrameTime-frameTime)));
if (frameTime minFrameTime)
OpenThreads::Thread::microSleep(static_castunsigned
int(100.0*(minFrameTime-frameTime)));
}
however the following code lets us hit exactly 30.0 fps or whatever we ask:
Code:
void CustomViewer::frame(double simulationTime)
{
if (_done) return;
float fpsLimit = 30.0;
osg::Timer_t currentTime = osg::Timer::instance()-tick();
if (osg::Timer::instance()-delta_s(lastFrameTime, currentTime) (1.0 /
fpsLimit))
return;
lastFrameTime = currentTime;
if (_firstFrame)
{
viewerInit();
if (!isRealized()) realize();
_firstFrame = false;
}
advance(simulationTime);
eventTraversal();
updateTraversal();
renderingTraversals();
}
any thoughts or comments about why this is the case? Also, does the constant
spinning in the second example mess with OSG multithreading?
thank you!
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=45919#45919
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Fixing Z-Fighting in Far Field...
Howdy everyone, I have objects under a group node called Objects that are rendered. When the objects get too far away, Z-fighting occurs. Would it be possible to fix the Z-fighting by instead of adding the objects as a child of Objects, create two camera nodes as children to Objects (farCam and NearCam) and adding the objects to either camera based on its range to the eyepoint? the farCam and nearCam would be identical except zNear and zFar for the projection. Would I need to make any additional settings in the cameras for this to work? Thanks! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=41741#41741 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::ProxyNode and osg::ComputeBoundsVisitor
Hey Sebastian! Thanks for the interesting reply. So, I guess that explains why the dimensions of my bounding box are tending to infinity! I have some questions though: 1) what do you mean by load the proxy node at least once? does that mean to add the proxy node as a child in the scene or just to add a reference to that node? 2) what do you mean by hook up in the load callbacks? 3) what does your database compiler do? Thanks so much! Sincerely, Oren -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=41609#41609 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osg::ProxyNode and osg::ComputeBoundsVisitor
Howdy friends,
I'm loading a model using an osg::ProxyNode like this:
Code:
std::map std::string, osg::ref_ptrosg::Node model_db_map;
...
if (model_db_map[name] == NULL)
{
osg::ref_ptrosg::ProxyNode pn = new osg::ProxyNode;
pn-setLoadingExternalReferenceMode
(osg::ProxyNode::DEFER_LOADING_TO_DATABASE_PAGER);
pn-setFileName (0, name + .ive);
model_db_map[name] = pn;
}
shortly after this I compute the bounding box like this:
Code:
osg::ref_ptrNode node = model_db_map[name];
osg::ComputeBoundsVisitor bb;
node-accept(bb);
problem is I then get this for bb.getBoundingBox()._min:
Code:
(gdb) p bboxMin
$1 = {_v = {3.40282347e+38, 3.40282347e+38, 3.40282347e+38}}
and this for bb.getBoundingBox()._max:
Code:
(gdb) p bboxMax
$2 = {_v = {-3.40282347e+38, -3.40282347e+38, -3.40282347e+38}}
and my stdout gets repeatedly bombed with this:
Code:
CullVisitor::apply(Geode) detected NaN,
depth=nan, center=(0 0 0),
matrix={
nan nan nan nan
nan nan nan nan
nan nan nan nan
nan nan nan nan
}
Why is this so? The bounding box is computed correctly when using
osgDB::readNodeFile instead of osg::ProxyNode. Thanks in advance.
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=41522#41522
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Transforming nodes
Dear Brendan, That was absolutely the problem!! Thanks so much for your help. Sincerely, Oren p.s. I wish there was some kind of heads-up in the header file for DOFTransform!! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=21786#21786 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Transforming nodes
bump... I've managed to insert DOFTransform nodes into my model but the geometry under these nodes are not being drawn even though the drawable update callbacks are definitely being called... The weird thing is, if I replace the DOFTransform with a simple MatrixTransform, the geometry renders just fine. :? If I just leave the put and inverse put matrices as identity matrices, it should still render, right? what am I doing wrong?? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=21732#21732 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] incomplete type in gdb
forgive me if this is a commonly asked question, I checked the archives and couldn't seem to find anything... using gdb, if I try to print the value of objects, I get this error: (gdb) p tempParent $1 = (struct osg::Group *) 0xb05178 (gdb) p *tempParent $2 = incomplete type how do I fix this so that I can see the object members? Thanks in advance! Oren :-* -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=21451#21451 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] incomplete type in gdb
Thanks so much Alberto! wow, I can't believe I didn't figure that out... I went to my OpenSceneGraph directory and did a make debug, then su'd and make install. then I changed my Makefile to link against the debug libraries I was using (-losgSimd and -losgViewerd) and it works great. Thanks again. Oren :D -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=21456#21456 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Top 10 OSG Debugging Tips
This is pretty obvious (I know) but it helps a lot to link with the debug libraries... :D -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=21464#21464 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Transforming nodes
wow, thank you guys for the great help... DOFTransform seems to be right on the money. Oren -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=21053#21053 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Transforming nodes
Hello everyone! Here is my question: I have a model of a sea faring vessel that has little gadgets on it like radars, turrets, propellors, etc. these gadgets are fully contained in separate named Geodes. That means that the geometry in the geode is specified relative to the origin of the ship and not the point where the gadget is located. what is the best way to make these things transform (mainly rotate)? I was thinking I could parent the gadget Geode with a MatrixTransform node to create some kind of local coordinate system for the geometry of the gadget but then the geometry itself would have to be respecified relative to this geometry. can I somehow put a static transform between the MatrixTransform and the Geode in order to offset the positions of all the vertices so that the point that the gadget transforms around becomes the location of the MatrixTransform? Thanks in advance for your help! :D -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=20846#20846 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Transforming nodes
Thanks for the suggestion... I'll definitely check it out. my other question is how do I modify the geometry on the gadgets to be located around an origin, namely the point around which the gadget transforms? so if my gadget is located at point (x,y,z), I want the point of articulation to be at (0, 0, 0). I was thinking I could put a transform right above the geode that offsets everything by (-x,-y,-z), and somehow use the Optimizer in osgUtils. any suggestions? Thanks again! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=20848#20848 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
