Hi Daniel, osgManipulator was never written with you specific type of usage in mind, and don't have any ideas how you might try to address this, you are driving very much off road without a map I'm afraid.
Robert. On 27 June 2012 08:15, Daniel Schmid <[email protected]> wrote: > Hi all > > > > I render my scene into a frame buffer object which is attached to the main > camera. Then I add a post render camera that renders the scene on a quad. > So far so good, all is well, the quad fills a quarter of my screen as > expected. > > > > Now I wanted to add a Dragger (TabPlaneDragger) to my quad in order to > resize it with the mouse dynamically. There I’m stuck. I followed the > osgManipulator example. I have the following issues: > > - When using the TabPlaneDragger, it shows only a horizontal line > over the rendered quad > > - When using the TabBoxDragger, it shows some dragger handles but > they don’t react. > > > > Is it possible that Draggers cannot handle nested cameras? Is there > something wrong with my postRenderCamera projection matrix so it cannot map > mouse coords? > > > > Hope anybody can help. I attached my code below. > > > > Regards > > Daniel > > > > > > osg::ref_ptr<osg::Camera> l_RootCamera = a_viewer->getCamera(); > > > > // Create the texture; we'll use this as our color buffer. > > // Note it has no image data; not required. > > osg::Texture2D* tex = new osg::Texture2D; > > tex->setTextureWidth( winW ); > > tex->setTextureHeight( winH ); > > tex->setInternalFormat( GL_RGBA ); > > tex->setBorderWidth( 0 ); > > tex->setFilter( osg::Texture::MIN_FILTER, osg::Texture::NEAREST ); > > tex->setFilter( osg::Texture::MAG_FILTER, osg::Texture::NEAREST ); > > > > // Attach the texture to the camera. Tell it to use multisampling. > > // Internally, OSG allocates a multisampled renderbuffer, renders to it, > > // and at the end of the frame performs a BlitFramebuffer into our > texture. > > l_RootCamera->attach( osg::Camera::COLOR_BUFFER0, tex, 0, 0, false, 8, 8 > ); > > l_RootCamera->setRenderTargetImplementation( > osg::Camera::FRAME_BUFFER_OBJECT, osg::Camera::FRAME_BUFFER ); > > > > // Configure postRenderCamera to draw fullscreen textured quad > > osg::ref_ptr< osg::Camera > postRenderCamera( new osg::Camera ); > > postRenderCamera->setClearColor( osg::Vec4( 0., 1., 0., 1. ) ); // should > never see this. > > postRenderCamera->setRenderTargetImplementation( > osg::Camera::FRAME_BUFFER, osg::Camera::FRAME_BUFFER ); > > > > postRenderCamera->setReferenceFrame( osg::Camera::ABSOLUTE_RF ); > > postRenderCamera->setRenderOrder( osg::Camera::POST_RENDER ); > > postRenderCamera->setViewMatrix( osg::Matrixd::identity() ); > > postRenderCamera->setProjectionMatrix( osg::Matrixd::identity() ); > > > > // create the quad filling the lower left quarter of the screen > > osg::Geode* geode( new osg::Geode ); > > geode->addDrawable( osg::createTexturedQuadGeometry(osg::Vec3( -1,-1,0 ), > osg::Vec3( 1,0,0 ), osg::Vec3( 0,1,0 ) ) ); > > geode->getOrCreateStateSet()->setTextureAttributeAndModes(0, tex, > osg::StateAttribute::ON ); > > geode->getOrCreateStateSet()->setMode( GL_LIGHTING, > osg::StateAttribute::OFF ); > > geode->setName("Grid"); > > > > // the following code is more or less copied from the osgManipulator example > > geode->getOrCreateStateSet()->setMode(GL_NORMALIZE, > osg::StateAttribute::ON); > > > > osg::MatrixTransform* selection = new osg::MatrixTransform; > > selection->addChild(geode); > > > > osgManipulator::TabPlaneDragger* dragger = new > osgManipulator::TabPlaneDragger(); > > dragger->setupDefaultGeometry(); > > > > float scale = geode->getBound().radius() * 1.6; > > dragger->setMatrix(osg::Matrix::scale(scale, scale, scale) * > > osg::Matrix::translate(geode->getBound().center())); > > > > dragger->addTransformUpdating(selection); > > dragger->setHandleEvents(true); > > > > // dragger->setActivationModKeyMask(osgGA::GUIEventAdapter::MODKEY_CTRL); > > // dragger->setActivationKeyEvent('a'); > > > > osg::Group* root = new osg::Group; > > root->addChild(selection); > > root->addChild(dragger); > > > > postRenderCamera->addChild(root); > > > > a_viewer->getSceneData()->asGroup()->addChild(postRenderCamera.get()); > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
