what happens if you change your coordinates of using Vec2Array to Vec3Array (it is still in 3d regardless of your 2D HUD projection, so just set Z to zero)?
Nick On Fri, Jul 4, 2014 at 3:20 PM, Andrés Barrionuevo <[email protected]> wrote: > Hello there! > > I've struggling a while with the setup of a HUD camera. > What I want to achieve is to show cross in the middle of the vieport. > > I have been able to display text, but not the cross, so I'm requesting a > little help with this ... :) > > Here's the code for the viewer (it is based in the osgQt and osghud > examples): > > > Code: > > class Viewer: public QWidget, public osgViewer::Viewer { > public: > static const unsigned int MAIN_MASK = 0x1; > static const unsigned int HUD_MASK = 0x2; > virtual void paintEvent( QPaintEvent* event ) > { > frame(); > } > Viewer( osg::ref_ptr<osg::Node> g): QWidget(), osgViewer::Viewer() { > osg::ref_ptr<osg::Camera> cam = createCamera( 150, 10, 640, 800 ); > > QGridLayout* layout = new QGridLayout; > layout->setContentsMargins( 1, 1, 1, 1 ); > QWidget* widget = addViewWidget( cam.get(), g.get() ); > > layout->addWidget( widget ); > setLayout( layout ); > connect( &( this->timer_ ), SIGNAL( timeout() ), this, SLOT( > update() ) ); > > getDatabasePager()->setDoPreCompile( true ); > } > void startTimer() { timer_.start(24); } > ~Viewer(){} > private: > osg::Camera* createCamera( int x, int y, int w, int h ) > { > try { > osg::DisplaySettings* ds = > osg::DisplaySettings::instance().get(); > if( !ds ) { > return NULL; > } > osg::ref_ptr<osg::GraphicsContext::Traits> traits = > new osg::GraphicsContext::Traits > ; > > traits->windowName = "no name"; > traits->windowDecoration = true; > traits->x = x; > traits->y = y; > traits->width = w; > traits->height = h; > traits->doubleBuffer = true; > traits->alpha = ds->getMinimumNumAlphaBits(); > traits->stencil = ds->getMinimumNumStencilBits(); > traits->sampleBuffers = ds->getMultiSamples(); > traits->samples = 4; > > osgViewer::Viewer::Views views; > getViews( views ); > osg::ref_ptr<osg::Camera> camera = views[ 0 ]->getCamera(); > > camera->setGraphicsContext( > new osgQt::GraphicsWindowQt( traits.get() ) ) > ; > camera->setClearColor( osg::Vec4( 0,0,0,1 ) ); > camera->setViewport( > new osg::Viewport( 0, 0, traits->width, > traits->height) ) > ; > const double tw = static_cast<double>( traits->width ); > const double th = static_cast<double>( traits->height ); > camera->setProjectionMatrixAsPerspective( 30.0f, tw / th, 1.0f, > 10000.0f ) > ; > > camera->setCullMask( MAIN_MASK ); > return camera.release(); > } catch( const std::bad_alloc& ) { > return NULL; > } > } > QWidget* addViewWidget( osg::Camera *camera, osg::Node *scene ) > { > try { > > addEventHandler( new osgViewer::StatsHandler ); > > osgGA::CameraManipulator* cameraManipulator = > new osgGA::TrackballManipulator( > osgGA::StandardManipulator::DEFAULT_SETTINGS > ) > ; > > setCameraManipulator( cameraManipulator ); > osg::observer_ptr<osgGA::TrackballManipulator> cm = > dynamic_cast<osgGA::TrackballManipulator*>( > cameraManipulator ) > ; > > cm->setAnimationTime( -1 ); > cm->setMinimumDistance( 10 ); > > > hud = new osg::Camera; > hud->setCullMask( HUD_MASK ); > > > > hud->setReferenceFrame(osg::Transform::ABSOLUTE_RF); > > hud->setClearMask(GL_DEPTH_BUFFER_BIT /*| > GL_COLOR_BUFFER_BIT*/ ); > > hud->setRenderOrder(osg::Camera::POST_RENDER); > > hud->setAllowEventFocus(false); > > osgViewer::Viewer::Windows windows; > getWindows( windows ); > hud->setClearColor( osg::Vec4( 0.0, 1.0, 0.0, > 255.0 ) ); > > hud->getOrCreateStateSet()->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF); > hud->setGraphicsContext( windows.front() ); > > > > osg::Viewport* vport = camera->getViewport(); > const osg::Matrix wmat = > vport->computeWindowMatrix(); > osg::Vec3d vc( vport->x() + vport->width()/2, > vport->y() + vport->height()/2, 1.0 ); > > hud->setViewport( vc.x() - 50, vc.y() - 50, > 100,100 ); > > hud->setProjectionMatrix( osg::Matrix::ortho2D( > vc.x() - 50, vc.y() - 50, vc.x() + 50, vc.y() + 50 ) ); > > osg::ref_ptr<osg::Geode> geode = new osg::Geode; > osg::ref_ptr<osg::Vec4Array> color = new > osg::Vec4Array; > color->push_back( osg::Vec4( 1.0, 0.0, 0.0, 1.0 ) > ); > #if 0 > osg::ref_ptr<osgText::Text> text = new > osgText::Text; > geode->addDrawable( text.get() ); > text->setPosition( osg::Vec3( vc.x(), vc.y(), 0.0 > ) ); > text->setAlignment( osgText::Text::CENTER_CENTER ); > text->setText( "BAH" ); > text->setColor( color->front() ); > > text->getOrCreateStateSet()->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF); > > text->getOrCreateStateSet()->setMode(GL_BLEND,osg::StateAttribute::OFF); > text->getOrCreateStateSet()->setMode(GL_LIGHTING, > osg::StateAttribute::OFF); > > #else > osg::ref_ptr<osg::Geometry> geom = new > osg::Geometry; > geode->addDrawable( geom.get() ); > osg::ref_ptr<osg::Vec2Array> vert = new > osg::Vec2Array; > const float buf = 0.5f; > vert->push_back( osg::Vec2d( vc.x() - buf, vc.y() > + buf ) ); > vert->push_back( osg::Vec2d( vc.x() + buf, vc.y() > - buf ) ); > vert->push_back( osg::Vec2d( vc.x() - buf, vc.y() > - buf ) ); > vert->push_back( osg::Vec2d( vc.x() + buf, vc.y() > + buf ) ); > > geom->setVertexArray( vert.get() ); > geom->setColorArray( color.get() ); > geom->setColorBinding( osg::Geometry::BIND_OVERALL > ); > > geom->getOrCreateStateSet()->setMode(GL_BLEND,osg::StateAttribute::OFF); > geom->getOrCreateStateSet()->setMode( > GL_DEPTH_TEST, > > osg::StateAttribute::OFF ) > ; > geom->getOrCreateStateSet()->setMode( GL_LIGHTING, > > osg::StateAttribute::OFF ) > ; > geom->getOrCreateStateSet()->setRenderBinDetails( > 25, "RenderBin" ); > geom->addPrimitiveSet( > new osg::DrawArrays( > GL_LINES, 0, > > vert->size() ) ) > ; > geom->getOrCreateStateSet()->setAttributeAndModes( > new osg::LineWidth( 3.0f ) > ) > ; > geom->getOrCreateStateSet()->setAttributeAndModes( > new osg::Point( 5.0f ) ) > ; > geom->addPrimitiveSet( > new osg::DrawArrays( > GL_POINTS, > > 0, > > vert->size() ) ) > ; > #endif > > geode->setNodeMask( HUD_MASK ); > hud->addChild( geode.get() ); > osg::Group* g = dynamic_cast<osg::Group*>(scene); > std::cout << "G-" << g->getNumChildren() << "\n"; > g->addChild( hud.get() ); > > > > > osg::Vec3d eye , cent = scene->getBound().center(); > eye[2] += 100; > cm->setHomePosition( eye, cent, osg::Y_AXIS ); > > setCamera( camera ); > setSceneData( g ); > setRunFrameScheme( osgViewer::Viewer::ON_DEMAND ); > osgQt::GraphicsWindowQt* gw = > dynamic_cast<osgQt::GraphicsWindowQt*>( > camera->getGraphicsContext() ) > ; > return gw ? gw->getGLWidget() : 0; > } catch( const std::bad_alloc& ) { > return NULL; > } > } > private: > QTimer timer_; > osg::ref_ptr<osg::Camera> hud; > osg::ref_ptr<osg::Geode> hudgeode; > }; > > > > > The code inside the #if 0 part in the addViewWidget function shows the > text, but the code for the cross shows nothing. > > Do you have any idea? > > ... > > Cheers, > Andrés > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=60156#60156 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- trajce nikolov nick
_______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
