Re: [osg-users] Implementation of movement, rotation of scale
Hi, i finded code, but in this function is failed why?
Code:
osg::Node* addDraggerToScene(osg::Node* scene, const std::string& name)
{
scene->getOrCreateStateSet()->setMode(GL_NORMALIZE,
osg::StateAttribute::ON);
osg::MatrixTransform* selection = new osg::MatrixTransform;
selection->addChild(scene);
osgManipulator::Dragger* dragger = createDragger(name);
osg::Group* root = new osg::Group;
root->addChild(dragger);
root->addChild(selection);
float scale = scene->getBound().radius() * 1.6;
dragger->setMatrix(osg::Matrix::scale(scale, scale, scale) *
osg::Matrix::translate(scene->getBound().center()));
osgManipulator::GridConstraint *con = new
osgManipulator::GridConstraint(*selection, osg::Vec3(0, 0, 0), osg::Vec3(30,
30, 30));
osg::ref_ptr m_pManipulator = new
osgManipulator::TabBoxDragger;
m_pManipulator->addConstraint(con);
dragger->addConstraint(con);
dragger->addTransformUpdating(selection);
// we want the dragger to handle it's own events automatically
dragger->setHandleEvents(true);
// if we don't set an activation key or mod mask then any mouse click on
// the dragger will activate it, however if do define either of
ActivationModKeyMask or
// and ActivationKeyEvent then you'll have to press either than mod key
or the specified key to
// be able to activate the dragger when you mouse click on it. Please
note the follow allows
// activation if either the ctrl key or the 'a' key is pressed and held
down.
dragger->setActivationModKeyMask(osgGA::GUIEventAdapter::MODKEY_CTRL);
dragger->setActivationKeyEvent('a');
return root;
}
after RETURN failde:(
...
Thank you!
Cheers,
Maxim
--
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http://forum.openscenegraph.org/viewtopic.php?p=76158#76158
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Re: [osg-users] Implementation of movement, rotation of scale
Hi, i finded code, but in this function is failed why?
Code:
osg::Node* addDraggerToScene(osg::Node* scene, const std::string& name)
{
scene->getOrCreateStateSet()->setMode(GL_NORMALIZE,
osg::StateAttribute::ON);
osg::MatrixTransform* selection = new osg::MatrixTransform;
selection->addChild(scene);
osgManipulator::Dragger* dragger = createDragger(name);
osg::Group* root = new osg::Group;
root->addChild(dragger);
root->addChild(selection);
float scale = scene->getBound().radius() * 1.6;
dragger->setMatrix(osg::Matrix::scale(scale, scale, scale) *
osg::Matrix::translate(scene->getBound().center()));
osgManipulator::GridConstraint *con = new
osgManipulator::GridConstraint(*selection, osg::Vec3(0, 0, 0), osg::Vec3(30,
30, 30));
osg::ref_ptr m_pManipulator = new
osgManipulator::TabBoxDragger;
m_pManipulator->addConstraint(con);
dragger->addConstraint(con);
dragger->addTransformUpdating(selection);
// we want the dragger to handle it's own events automatically
dragger->setHandleEvents(true);
// if we don't set an activation key or mod mask then any mouse click on
// the dragger will activate it, however if do define either of
ActivationModKeyMask or
// and ActivationKeyEvent then you'll have to press either than mod key
or the specified key to
// be able to activate the dragger when you mouse click on it. Please
note the follow allows
// activation if either the ctrl key or the 'a' key is pressed and held
down.
dragger->setActivationModKeyMask(osgGA::GUIEventAdapter::MODKEY_CTRL);
dragger->setActivationKeyEvent('a');
return root;
}
after RETURN failde:(
...
Thank you!
Cheers,
Maxim
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=76159#76159
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[osg-users] Keeping camera fixed
Hi All, I am able to animate my scene (bodies translating and rotating in the space) providing a NodeCallback with setUpdateCallback to each PositionAttitudeTransform I want to animate. What I see is that the camera "follows" in some way the bodies movements without having done anything in the code to trigger that behavior explicitly. Do you have any tips to keep the camera fixed during the update of nodes position and attitude? Or any details of the OSG code I should focus on (I am quite a beginner)? Thanks, Renzo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=76160#76160 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Huge perfomance issues
Hi, I am developing a data visualization application with Qt + OSG, but I have huge performance problems. These problems are not due to OSG itself but rather due to how I use OSG (I just started using OSG/OpenGL for the first time). The application accepts a lot of data as messages over the network, and draws polygons and lines according to the received data. In order to make drawing easy, I have developed a class which has many drawing functions: DrawPolygon, DrawPolygonLine, DrawLine, DrawRectangle. DrawCircle, DrawCube, etc. In every of these functions, I do the following: 1) create a Geode. 2) create a Geometry and attach it to the Geode created above. 3) create a material with the appropriate colors for the drawing, attached to the Geode created above. 4) create a state set for the drawing properties, attached to the Geode created above. At each frame, I delete all the objects created, and then use the API I described above (i.e. DrawPolygon, DrawPolygonLine etc) to recreate the drawings with the newly received data. The frame rate is abysmal though. After the creation of a few tens of polygons and lines (around 100), the frame rate drops extremely low and the UI becomes totally unresponsive. The code I have created is largely copied from the OSG examples I have found online, mostly from the osggeometry.cpp example. My question is what am I doing wrong? Is the multiple statesets created the problem? Each Drawing function creates a new stateset, a new vertex array, a new primitives array, a new geode etc. Thank you! Cheers, Achilleas -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=76154#76154 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Compiling osgVRPN
Hi Again, As an update, I whittled my way through several of the dependency issues Code: Scanning dependencies of target osgdb_tracker Scanning dependencies of target osgVRPNwall Scanning dependencies of target osgVRPNviewer Scanning dependencies of target osgVRPNmod [ 65%] Building CXX object src/osgPlugins/tracker/CMakeFiles/osgdb_tracker.dir/ReaderWriterTRACKER.cpp.o [ 70%] Building CXX object examples/osgVRPNwall/CMakeFiles/osgVRPNwall.dir/osgVRPNwall.cpp.o [ 80%] Building CXX object examples/osgVRPNmod/CMakeFiles/osgVRPNmod.dir/osgVRPNmod.cpp.o [ 80%] Building CXX object examples/osgVRPNviewer/CMakeFiles/osgVRPNviewer.dir/osgVRPNviewer.cpp.o [ 85%] Linking CXX shared module ../../../bin/osgdb_tracker.so [ 85%] Built target osgdb_tracker [ 90%] Linking CXX executable ../../bin/osgVRPNwall ../../bin/libosgVRPN.so: undefined reference to `q_from_axis_angle' collect2: error: ld returned 1 exit status examples/osgVRPNwall/CMakeFiles/osgVRPNwall.dir/build.make:102: recipe for target 'bin/osgVRPNwall' failed make[2]: *** [bin/osgVRPNwall] Error 1 CMakeFiles/Makefile2:347: recipe for target 'examples/osgVRPNwall/CMakeFiles/osgVRPNwall.dir/all' failed make[1]: *** [examples/osgVRPNwall/CMakeFiles/osgVRPNwall.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs [ 95%] Linking CXX executable ../../bin/osgVRPNviewer [100%] Linking CXX executable ../../bin/osgVRPNmod ../../bin/libosgVRPN.so: undefined reference to `q_from_axis_angle' collect2: error: ld returned 1 exit status examples/osgVRPNviewer/CMakeFiles/osgVRPNviewer.dir/build.make:102: recipe for target 'bin/osgVRPNviewer' failed make[2]: *** [bin/osgVRPNviewer] Error 1 CMakeFiles/Makefile2:237: recipe for target 'examples/osgVRPNviewer/CMakeFiles/osgVRPNviewer.dir/all' failed make[1]: *** [examples/osgVRPNviewer/CMakeFiles/osgVRPNviewer.dir/all] Error 2 ../../bin/libosgVRPN.so: undefined reference to `q_from_axis_angle' collect2: error: ld returned 1 exit status examples/osgVRPNmod/CMakeFiles/osgVRPNmod.dir/build.make:102: recipe for target 'bin/osgVRPNmod' failed make[2]: *** [bin/osgVRPNmod] Error 1 CMakeFiles/Makefile2:292: recipe for target 'examples/osgVRPNmod/CMakeFiles/osgVRPNmod.dir/all' failed make[1]: *** [examples/osgVRPNmod/CMakeFiles/osgVRPNmod.dir/all] Error 2 Makefile:129: recipe for target 'all' failed make: *** [all] Error 2 When I do the following: Code: # nm - list symbols from object files $> nm bin/libosgVRPN.so | grep q_from_axis_angle U q_from_axis_angle It shows it undefined in libosgVRPN.so Same with libvrpn.a Code: $> nm ./libvrpn.a | grep q_from_axis_angle U q_from_axis_angle HOWEVER Code: $> nm ./libquat.a | grep q_from_axis_angle 0980 T q_from_axis_angle So it seems either libquat isn't linked against libvrpn or libosgVRPN... Wondering if something is missing in the osgvrpnviewer makefile? Again any help or ideas would be great. ... Thank you! Cheers, Michael -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=76151#76151 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Huge perfomance issues
Hi Achilleas, your explanations look to me like "I want to repaint my living room. So I destroy my house and ..." My suggestion: For each kind of geometry create it as geode and add it to a switch node. So you can switch them on and off as needed. For alterations keep pointers to the geodes and alter the geometries. I.e. assign new coordinate arrays etc. . Also there is no need to do it within a frame. Regards - Werner - Am 30.05.2019 um 12:53 schrieb Achilleas Margaritis: > Hi, > > I am developing a data visualization application with Qt + OSG, but I have > huge performance problems. > > These problems are not due to OSG itself but rather due to how I use OSG (I > just started using OSG/OpenGL for the first time). > > The application accepts a lot of data as messages over the network, and draws > polygons and lines according to the received data. > > In order to make drawing easy, I have developed a class which has many > drawing functions: DrawPolygon, DrawPolygonLine, DrawLine, DrawRectangle. > DrawCircle, DrawCube, etc. > > In every of these functions, I do the following: > > 1) create a Geode. > 2) create a Geometry and attach it to the Geode created above. > 3) create a material with the appropriate colors for the drawing, attached to > the Geode created above. > 4) create a state set for the drawing properties, attached to the Geode > created above. > > At each frame, I delete all the objects created, and then use the API I > described above (i.e. DrawPolygon, DrawPolygonLine etc) to recreate the > drawings with the newly received data. > > The frame rate is abysmal though. After the creation of a few tens of > polygons and lines (around 100), the frame rate drops extremely low and the > UI becomes totally unresponsive. > > The code I have created is largely copied from the OSG examples I have found > online, mostly from the osggeometry.cpp example. > > My question is what am I doing wrong? > > Is the multiple statesets created the problem? Each Drawing function creates > a new stateset, a new vertex array, a new primitives array, a new geode etc. > > Thank you! > > Cheers, > Achilleas > > -- > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=76154#76154 > > > > > > ___ > 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
Re: [osg-users] Huge perfomance issues
The problem is I need to destroy my house every frame. There is no standard number of objects received; any object, with any configuration, can be received at any time. My only choice is to destroy everything and repaint everything. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=76162#76162 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Keeping camera fixed
"Renzo Scaletta" writes: > What I see is that the camera "follows" in some way the bodies movements > without having done anything in the code to trigger that behavior explicitly. Hi, Renzo, certainly it shouldn't be happening by default. I am thinking about some possible causes (they could be more, of course): a) You are using some sort of NodeTrackerManipulator attached to the viewer, otherwise its matrix shouldn't change. b) You are repeatedly calling the home() method, or just pressing SPACE, so the view is enlarged or shrunk in order to fit the whole scene. -- Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Huge perfomance issues
"Achilleas Margaritis" writes: > The problem is I need to destroy my house every frame. > > There is no standard number of objects received; any object, with any > configuration, can be received at any time. > > My only choice is to destroy everything and repaint everything. You can also modify the primitives and statesets instead of creating/destroying. -- Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Huge perfomance issues
There should be a better approach. Just a quick idea: For each kind of object keep an array of pointers to already created geodes. If you don't need a certain geode switch it off in the osg::Switch. If you get a request for a new one, check the switch for inactive geodes. If found, just alter it and activate it. Otherwise append a new one. In some way you need an organization for the objects. Am 31.05.2019 um 17:34 schrieb Achilleas Margaritis: > The problem is I need to destroy my house every frame. > > There is no standard number of objects received; any object, with any > configuration, can be received at any time. > > My only choice is to destroy everything and repaint everything. > > -- > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=76162#76162 > > > > > > ___ > 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
Re: [osg-users] Huge perfomance issues
So, in other words, keep objects preallocated and switch on only the necessary ones? And if there is no current object that matches the existing ones, then and only then create a new one? Not a bad idea, in fact. Thanks a lot for the reply. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=76166#76166 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Huge perfomance issues
Hi, By the way,the default vertex specification of geometry is displaylist,if you need to change vertex frequently,use VAO and VBO. Thank you! Cheers, Yu -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=76167#76167 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
