Re: [osg-users] First recipe from cookbook won't compile with given source code
Thank you, Julien. Though there are two different CMakeLists.txt files (https://github.com/xarray/osgRecipes/CMakeLists.txt and https://github.com/xarray/osgRecipes/tree/master/cookbook/CMakeLists.txt), I tried with the first one, because you said so. I had to give a value to the OPENSCENEGRAPH_LIB_DIR (/usr/local/lib64) in CMake, but it still gives me an error: > Could NOT find OpenCV (missing: OpenCV_ROOT_DIR OpenCV_LIBRARIES_RELEASE > OpenCV_LIBRARIES_DEBUG OpenCV_LIBRARIES) > Could NOT find ALVAR (missing: ALVAR_ROOT_DIR ALVAR_INCLUDE_DIRS > ALVAR_LIBRARIES_RELEASE ALVAR_LIBRARIES_DEBUG ALVAR_LIBRARIES) > CMake Error: The following variables are used in this project, but they are > set to NOTFOUND. > Please set them or make sure they are set and tested correctly in the CMake > files: > GLEW_LIBRARY > linked by target "osgnanovg" in directory > /home/rodrigo/Videos/osg/rodrigo/osgRecipes-master/integrations/osgnanovg > > Configuring incomplete, errors occurred! > See also > "/home/rodrigo/Videos/osg/rodrigo/osgRecipes-build/CMakeFiles/CMakeOutput.log". > See also > "/home/rodrigo/Videos/osg/rodrigo/osgRecipes-build/CMakeFiles/CMakeError.log". > And with this I cannot "make" or "make install" it. The readme gives an even more incomplete direction (say nothing about the OPENSCENEGRAPH_LIB_DIR variable, and why not use the default set by OSG?). Going the way I was going, I managed to compile and run most of the recipes in chapter 2. I wouldn't mind giving up one recipe or another just because I didn't install some obscure library. So, maybe using g++ is an easier option? (This includes me losing years with Borland Delphi, instead of learning and dominating C++ and CMake stuff. Shame on me!) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=75511#75511 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] First recipe from cookbook won't compile with given source code
Hi use cmake with provided CMakelist.txt (https://github.com/xarray/osgRecipes) Cheers Rodrigo wrote: > Hi, > > I'm following the OpenSceneGraph 3 Cookbook > (http://ahux.narod.ru/olderfiles/1/OSG3_Cookbook.pdf) to learn more about > OSG. So I created a directory Cookbook following the directory structure from > the source code here > (https://github.com/xarray/osgRecipes/tree/master/cookbook). > > Before compiling the first recipe > (https://github.com/xarray/osgRecipes/blob/master/cookbook/chapter2/ch02_01/observer_ptr.cpp), > I had copied the "Common Functions" from the textbook (pages 38-39), into a > file called "CommonFunctions". When compiling (with g++ on Linux) I got the > following error: > > > > $ g++ observer_ptr.cpp -I../.. -losg -losgDB -losgGA -losgText -losgUtil > > -losgViewer -o observer_ptr > > > > In file included from observer_ptr.cpp:11:0: > > ../../CommonFunctions: In member function ‘virtual bool > > osgCookBook::PickHandler::handle(const osgGA::GUIEventAdapter&, > > osgGA::GUIActionAdapter&)’: > > ../../CommonFunctions:47:62: error: binding ‘const > > osgUtil::LineSegmentIntersector::Intersection’ to reference of type > > ‘osgUtil::LineSegmentIntersector::Intersection&’ discards qualifiers > > osgUtil::LineSegmentIntersector::Intersection& result = > > *(intersector->getIntersections().begin()); > > > > > ../.. is the path to the CommonFunctions file. I tried a few const_cast > operations, but I don't have so much experience with C++ and couldn't solve > it. I commented out this two lines and the program compiled fine and ran, > though clicking on the objects wouldn't dismiss them (guess that's what these > lines do). > > Then I noticed they have this "CommonFunctions" file together with the given > source code, so I replaced mine with theirs (CommonFunctions and > CommonFunctions.cpp). But when compiling, a new error: > > > > $ g++ observer_ptr.cpp -I../.. -losg -losgDB -losgGA -losgText -losgUtil > > -losgViewer -o observer_ptr > > > > /tmp/cca0xsAB.o: In function `main': > > observer_ptr.cpp:(.text+0x79): undefined reference to > > `osgCookBook::createText(osg::Vec3f const&, > > std::__cxx11::basic_string, > > std::allocator > const&, float)' > > observer_ptr.cpp:(.text+0x103): undefined reference to > > `osgCookBook::createHUDCamera(double, double, double, double)' > > /tmp/cca0xsAB.o:(.data.rel.ro._ZTV18RemoveShapeHandler[_ZTV18RemoveShapeHandler]+0xb8): > > undefined reference to > > `osgCookBook::PickHandler::handle(osgGA::GUIEventAdapter const&, > > osgGA::GUIActionAdapter&)' > > /tmp/cca0xsAB.o:(.data.rel.ro._ZTC18RemoveShapeHandler0_N11osgCookBook11PickHandlerE[_ZTV18RemoveShapeHandler]+0x18): > > undefined reference to `typeinfo for osgCookBook::PickHandler' > > /tmp/cca0xsAB.o:(.data.rel.ro._ZTC18RemoveShapeHandler0_N11osgCookBook11PickHandlerE[_ZTV18RemoveShapeHandler]+0xb8): > > undefined reference to > > `osgCookBook::PickHandler::handle(osgGA::GUIEventAdapter const&, > > osgGA::GUIActionAdapter&)' > > /tmp/cca0xsAB.o:(.data.rel.ro._ZTC18RemoveShapeHandler0_N11osgCookBook11PickHandlerE[_ZTV18RemoveShapeHandler]+0xe0): > > undefined reference to `typeinfo for osgCookBook::PickHandler' > > /tmp/cca0xsAB.o:(.data.rel.ro._ZTC18RemoveShapeHandler0_N11osgCookBook11PickHandlerE[_ZTV18RemoveShapeHandler]+0x218): > > undefined reference to `typeinfo for osgCookBook::PickHandler' > > /tmp/cca0xsAB.o:(.data.rel.ro._ZTC18RemoveShapeHandler0_N11osgCookBook11PickHandlerE[_ZTV18RemoveShapeHandler]+0x428): > > undefined reference to `typeinfo for osgCookBook::PickHandler' > > /tmp/cca0xsAB.o:(.data.rel.ro._ZTI18RemoveShapeHandler[_ZTI18RemoveShapeHandler]+0x10): > > undefined reference to `typeinfo for osgCookBook::PickHandler' > > collect2: error: ld returned 1 exit status > > > > > Can anybody please tell me what am I doing wrong? > > Thank you! > > Cheers, > Rodrigo Twirling twirling twirling toward freedom -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=75510#75510 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Capturing all visible nodes
Hi
You have to setup cullcallbacks of your drawables
Code:
drawable->setCullCallback(new MyCullCallback);
it then will be called during osgViewer cull traversal...
Cheers
ijwolf8 wrote:
> Hello all,
>
> I've looked everywhere for this, and have tried to piece together examples
> I've found online, but I am having no luck accomplishing what conceptually
> seems like a very simple task.
>
> The overall goal is to take all nodes within view and send them to UV space
> for texture mapping. The only part I can't get down is the first
> part-capturing all visible nodes within view.
>
> I've read through several posts on this site (removed links because "You must
> have 2 posts before you can post URL's/Links."), but they all end without a
> real solution. The last one in particular just confuses me:
>
> "Just write a NodeVisitor that has it's traversal mode set to
> TRAVERSE_ALL_CHILDREN i.e. ..."
>
> But that wasn't the question? It was to get all visible nodes, not ALL nodes?
>
> Either way, I've attempted to implement these codes and more, but I just
> don't understand the structure of node visitors and callbacks enough to make
> progress. For example, one of the posts contained this code that seemed very
> promising:
>
>
> Code:
>
> class MyCullCallback : public osg::NodeCallback
> {
>
> void operator()(osg::Node* node, osg::NodeVisitor* nv)
> {
> // osgUtil::CullVisitor* cv = nv->asCullVisitor();
> osgUtil::CullVisitor* cv = dynamic_cast(nv);
> if (!cv->isCulled(*node))
> {
> std::cout << "Node is visible: "<< endl;
> }
>
> if ( cv->isCulled(*node))
> {
>
> std::cout << "Node is NOT visible: "<
> }
> traverse(node,nv);
> }
> };
>
>
>
>
> I tried the following code along with it, but it just throws an error and
> freezes.
>
>
> Code:
>
> MyCullCallback* cb = new MyCullCallback();
> osg::NodeVisitor* nv = new osg::NodeVisitor();
> //cb->operator()(myGroup, nv);
>
>
>
>
> So how exactly am I supposed to utilize it? Do I have to initialize
> NodeVisitor with an initial node? If so which do I chose?
>
> If there's anymore information I can give please let me know. I've researched
> all sorts of frustum culling, node visitors, and manually capturing visible
> nodes with ray tracing, but I figure there has got to be a simpler way to do
> this!
>
> Thanks for any and all help,
>
> Isaac
Twirling twirling twirling toward freedom
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Re: [osg-users] [Any feedback welcome] possible lack of robustness of the VAO path
The following code exibits crashes with VAO path
Code:
#include
#include
#include
#include
#include
#include
#include
class GeomLoaderCB : public osg::Camera::DrawCallback// osg::NodeCallback
{
public:
int _thresremoval;int _nbaddedatatime;
GeomLoaderCB(int thresremoval=1,int
nbaddedatatime=1):_nbaddedatatime(nbaddedatatime),_thresremoval(thresremoval) {}
mutable std::list > _geoms;
void setGeometryList(osgUtil::GeometryCollector::GeometryList c) {
for(auto f : c)
_geoms.push_back(f);
}
virtual void operator () (const osg::Camera& camera ) const {
osg::Node * node=const_cast()->getChild(0);
if(_geoms.empty())return;
osg::ref_ptr gr = node->asGroup();
if(gr->getNumChildren()>_thresremoval)
{
OSG_WARN<<"removing "<< gr->getChild(0) ::iterator it= _geoms.begin();
int cpt=0;
while(it!=_geoms.end()&++<_nbaddedatatime ) {
gr->addChild((osg::Drawable*)
(*it)->clone(osg::CopyOp::DEEP_COPY_ALL));
OSG_WARN<<"add "<< (*it )
->getVertexArray()->getNumElements()accept(geomcollector);
osg::Group * root=new osg::Group;
//osg::Camera * root=new osg::Camera;
GeomLoaderCB * loader=new
GeomLoaderCB(geomcountabovewichweremove,geomcountaddedatatime);
loader->setGeometryList( geomcollector.getGeometryList() );
osgViewer::Viewer viewer;
viewer.addEventHandler(new osgViewer::StatsHandler);
viewer.addEventHandler(new osgViewer::WindowSizeHandler);
viewer.addEventHandler(new osgViewer::ThreadingHandler);
viewer.realize();
viewer.setSceneData( root);
viewer.getCamera()->setFinalDrawCallback(loader);
loaded=0;
viewer.run();
}
}
if you want my test sample:
https://drive.google.com/file/d/0BxIH-jcsgYDdTG5ha21HZE1jX1E/view?usp=sharing
for ex It fails with args :
BIGCITY.ive --remove 150 --add 100
I believe there's a bugso I'd be glad if someone validate it...
note: toggling statshandler prevent crash
Thanks in advance
Cheers
mp3butcher wrote:
> Hi all,
> I wrote a sample code exibiting crash with my scene
> https://github.com/openscenegraph/OpenSceneGraph/issues/692
>
> If you'd have 5 min to waste, i would be glad you confirm with your own
> scene...
>
> Thank you!
>
> Cheers,
> Julien
Twirling twirling twirling toward freedom
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[osg-users] Capturing all visible nodes
Hello all,
I've looked everywhere for this, and have tried to piece together examples I've
found online, but I am having no luck accomplishing what conceptually seems
like a very simple task.
The overall goal is to take all nodes within view and send them to UV space for
texture mapping. The only part I can't get down is the first part-capturing all
visible nodes within view.
I've read through several posts on this sight (removed links because "You must
have 2 posts before you can post URL's/Links.")
But they all end without a real solution. The last one in particular just
confuses me:
"Just write a NodeVisitor that has it's traversal mode set to
TRAVERSE_ALL_CHILDREN i.e. ..."
But that wasn't the question? It was to get all visible nodes, not ALL nodes?
Either way, I've attempted to implement these codes and more, but I just don't
understand the structure of node visitors and callbacks enough to make progress.
For example, one of the posts contained this code that seemed very promising:
Code:
class MyCullCallback : public osg::NodeCallback
{
void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
// osgUtil::CullVisitor* cv = nv->asCullVisitor();
osgUtil::CullVisitor* cv = dynamic_cast(nv);
if (!cv->isCulled(*node))
{
std::cout << "Node is visible: "<< endl;
}
if ( cv->isCulled(*node))
{
std::cout << "Node is NOT visible: "
[osg-users] Converting an osg::Matrix to osg::PositionAttitudeTransform using decompose?
I have a matrix that is constructed as follows: Code: osg::Matrix final; final.preMultScale(inverseParentScale); final.preMultRotate((worldRotation * inverseWorld).getRotate()); final.preMultScale(parentScale); What I'm basically trying to do is rotate a child by first calculating a world rotation and then converting it to a local rotation by multiplying by the inverse world transform. The problem is that if the parent is non-uniformly scaled, the result is weirdly sheared. So I thought I would remove the parent scale, rotate, then apply the parent scale back, which is what I think the above lines do, but please feel free to correct me. Now what I want is to convert the result to a PositionAttitudeTransform. But I'm not getting correct results doing the following: Code: osg::Vec3d t, s; osg::Quat r, so; final.decompose(t, r, s, so); _childTransform->setScale(s); _childTransform->setAttitude(r); I suspect that the "scale factor" parameter is the issue, since it has non-zero values and Im not using them, but I'm not sure what it even is. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=75506#75506 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
