someone? I realy need to move object in the scene with the mouse.. there maby onother way to do so?
thanks NB On 12/5/06, benny porat <[EMAIL PROTECTED]> wrote:
thanks the intersection now work fine, but I still have the problem that I need to use the function: computeNearFarPoints I need this function to compute the coordinate of the world with specific z value, that correspond to (x,y) on the screen, so I can know how much to move the object. (I need to know when the mouse move on the screen how much he move in the world, in a specific z value?) how I can do this? thanks NB On 12/5/06, bertrand greslier <[EMAIL PROTECTED]> wrote: > > Hi, > > you can see cooki3d c++ api > <http://bertrand.greslier.free.fr/mamboV4.6/index.php?option=com_content&task=view&id=44&Itemid=53>class > EnvironnmentGeneric.cpp > function bool EnvironnementGeneric::computeIntersections(float x, float > y, > > osgUtil::IntersectVisitor::HitList& hitlist, > osg::Node::NodeMask > mask) > it use file also the file PickIntersectVisitor.h > > it is a an api very inspired from osgProducer and work with all GUI... > > Regards, > Bertrand. > > > On 12/5/06, benny porat < [EMAIL PROTECTED]> wrote: > > > > Hi, > > I build an event handler for picking and everything work fine, we do > > something like that > > bool KEYBOARD_EVENT_HANDLER::handle(const osgGA::GUIEventAdapter& > > ea,osgGA::GUIActionAdapter& aa) > > { > > switch(ea.getEventType()) > > { > > case(osgGA::GUIEventAdapter::PUSH): > > { > > osgProducer::Viewer* viewer = > > dynamic_cast<osgProducer::Viewer*>(&aa); > > float x = ea.getX(); // x,y screen > > float y = ea.getY(); > > osgUtil::IntersectVisitor::HitList benny; > > if (viewer->computeIntersections(x,y,benny)) > > { > > . > > . > > . > > osg::Vec3 v1,v2; > > viewer->computeNearFarPoints(x,y,0,v1,v2); > > . > > . > > . > > } > > } > > } > > } > > Now, I need to use GUI for my program so I use QT4, and I use Robert > > example. > > the problem is that the dynamic_cast return me NULL... > > so I try to find intersection without the viewer, I study > > osgUtil::IntersectVisitor, but there is a problem I don't know how to > > convert me screen point(the one that I get from the osgGA::GUIEventAdapter). > > another problem that I need to find the world coordinate of a given > > point in the screen and a given z value until know I use the > > computeNearFarPoints function to calculate it. > > > > what I can do? > > there is a way to work with viewer after all? > > there is another way to find intersection? > > there is replacement to those function that I can use? > > > > > > thanks > > NB > > > > _______________________________________________ > > osg-users mailing list > > [email protected] > > http://openscenegraph.net/mailman/listinfo/osg-users > > http://www.openscenegraph.org/ > > > > > > > -- > Bertrand Greslier > http://www.cooki3d.org > _______________________________________________ > osg-users mailing list > [email protected] > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ > >
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