void CompositeViewer::reprojectPointerData(osgGA::GUIEventAdapter& source_event, osgGA::GUIEventAdapter& dest_event)
{
osgViewer::GraphicsWindow* gw = dynamic_cast<osgViewer::GraphicsWindow*>(dest_event.getGraphicsContext());
if (!gw) return;
float x = dest_event.getX();
float y = dest_event.getY();
bool invert_y = dest_event.getMouseYOrientation()==osgGA::GUIEventAdapter::Y_INCREASING_DOWNWARDS;
if (invert_y && gw->getTraits()) y = gw->getTraits()->height - y;
dest_event.addPointerData(new osgGA::PointerData(gw, x, 0, gw->getTraits()->width,
y, 0, gw->getTraits()->height));
osg::Camera* camera = (source_event.getNumPointerData()>=2) ? dynamic_cast<osg::Camera*>(source_event.getPointerData(1)->object.get()) : 0;
osg::Viewport* viewport = camera ? camera->getViewport() : 0;
if (!viewport) return;
dest_event.addPointerData(new osgGA::PointerData(camera, (x-viewport->x())/viewport->width()*2.0f-1.0f, -1.0, 1.0,
(y-viewport->y())/viewport->height()*2.0f-1.0f, -1.0, 1.0));
osgViewer::View* view = dynamic_cast<osgViewer::View*>(camera->getView());
osg::Camera* view_masterCamera = view ? view->getCamera() : 0;
// if camera isn't the master it must be a slave and could need reprojecting.
if (view && camera!=view_masterCamera)
{
generateSlavePointerData(camera, dest_event);
}
}
void CompositeViewer::generatePointerData(osgGA::GUIEventAdapter& event)
{
osgViewer::GraphicsWindow* gw = dynamic_cast<osgViewer::GraphicsWindow*>(event.getGraphicsContext());
if (!gw) return;
float x = event.getX();
float y = event.getY();
bool invert_y = event.getMouseYOrientation()==osgGA::GUIEventAdapter::Y_INCREASING_DOWNWARDS;
if (invert_y && gw->getTraits()) y = gw->getTraits()->height - y;
event.addPointerData(new osgGA::PointerData(gw, x, 0, gw->getTraits()->width,
y, 0, gw->getTraits()->height));
event.setMouseYOrientationAndUpdateCoords(osgGA::GUIEventAdapter::Y_INCREASING_UPWARDS);
typedef std::vector<osg::Camera*> CameraVector;
CameraVector activeCameras;
osg::GraphicsContext::Cameras& cameras = gw->getCameras();
for(osg::GraphicsContext::Cameras::iterator citr = cameras.begin();
citr != cameras.end();
++citr)
{
osg::Camera* camera = *citr;
if (camera->getAllowEventFocus() &&
camera->getRenderTargetImplementation()==osg::Camera::FRAME_BUFFER)
{
osg::Viewport* viewport = camera ? camera->getViewport() : 0;
if (viewport &&
x >= viewport->x() && y >= viewport->y() &&
x <= (viewport->x()+viewport->width()) && y <= (viewport->y()+viewport->height()) )
{
activeCameras.push_back(camera);
}
}
}
std::sort(activeCameras.begin(), activeCameras.end(), osg::CameraRenderOrderSortOp());
osg::Camera* camera = activeCameras.empty() ? 0 : activeCameras.back();
if (camera)
{
osg::Viewport* viewport = camera ? camera->getViewport() : 0;
event.addPointerData(new osgGA::PointerData(camera, (x-viewport->x())/viewport->width()*2.0f-1.0f, -1.0, 1.0,
(y-viewport->y())/viewport->height()*2.0f-1.0f, -1.0, 1.0));
osgViewer::View* view = dynamic_cast<osgViewer::View*>(camera->getView());
osg::Camera* view_masterCamera = view ? view->getCamera() : 0;
// if camera isn't the master it must be a slave and could need reprojecting.
if (view && camera!=view_masterCamera)
{
generateSlavePointerData(camera, event);
}
}
}
void CompositeViewer::generateSlavePointerData(osg::Camera* camera, osgGA::GUIEventAdapter& event)
{
osgViewer::GraphicsWindow* gw = dynamic_cast<osgViewer::GraphicsWindow*>(event.getGraphicsContext());
if (!gw) return;
// What type of Camera is it?
// 1) Master Camera : do nothin extra
// 2) Slave Camera, Relative RF, Same scene graph as master : transform coords into Master Camera and add to PointerData list
// 3) Slave Camera, Relative RF, Different scene graph from master : do nothing extra?
// 4) Slave Camera, Absolute RF, Same scene graph as master : do nothing extra?
// 5) Slave Camera, Absolute RF, Different scene graph : do nothing extra?
// 6) Slave Camera, Absolute RF, Different scene graph but a distortion correction subgraph depending upon RTT Camera (slave or master)
// : project ray into RTT Camera's clip space, and RTT Camera's is Relative RF and sharing same scene graph as master then transform coords.
// if camera isn't the master it must be a slave and could need reprojecting.
osgViewer::View* view = dynamic_cast<osgViewer::View*>(camera->getView());
if (!view) return;
osg::Camera* view_masterCamera = view->getCamera();
if (camera!=view_masterCamera)
{
float x = event.getX();
float y = event.getY();
bool invert_y = event.getMouseYOrientation()==osgGA::GUIEventAdapter::Y_INCREASING_DOWNWARDS;
if (invert_y && gw->getTraits()) y = gw->getTraits()->height - y;
double master_min_x = -1.0;
double master_max_x = 1.0;
double master_min_y = -1.0;
double master_max_y = 1.0;
osg::Matrix masterCameraVPW = view_masterCamera->getViewMatrix() * view_masterCamera->getProjectionMatrix();
if (view_masterCamera->getViewport())
{
osg::Viewport* viewport = view_masterCamera->getViewport();
master_min_x = viewport->x();
master_min_y = viewport->y();
master_max_x = viewport->x()+viewport->width();
master_max_y = viewport->y()+viewport->height();
masterCameraVPW *= viewport->computeWindowMatrix();
}
// slave Camera tahnks to sharing the same View
osg::View::Slave* slave = view ? view->findSlaveForCamera(camera) : 0;
if (slave)
{
if (camera->getReferenceFrame()==osg::Camera::RELATIVE_RF && slave->_useMastersSceneData)
{
osg::Viewport* viewport = camera->getViewport();
osg::Matrix localCameraVPW = camera->getViewMatrix() * camera->getProjectionMatrix();
if (viewport) localCameraVPW *= viewport->computeWindowMatrix();
osg::Matrix matrix( osg::Matrix::inverse(localCameraVPW) * masterCameraVPW );
osg::Vec3d new_coord = osg::Vec3d(x,y,0.0) * matrix;
//OSG_NOTICE<<" pointer event new_coord.x()="<<new_coord.x()<<" new_coord.y()="<<new_coord.y()<<std::endl;
event.addPointerData(new osgGA::PointerData(view_masterCamera, new_coord.x(), master_min_x, master_max_x,
new_coord.y(), master_min_y, master_max_y));
}
else if (!slave->_useMastersSceneData)
{
// Are their any RTT Camera's that this Camera depends upon for textures?
osg::ref_ptr<osgUtil::LineSegmentIntersector> ray = new osgUtil::LineSegmentIntersector(osgUtil::Intersector::WINDOW, x,y);
osgUtil::IntersectionVisitor iv(ray.get());
camera->accept(iv);
if (ray->containsIntersections())
{
osg::Vec3 tc;
osg::Texture* texture = ray->getFirstIntersection().getTextureLookUp(tc);
if (texture)
{
// look up Texture in RTT Camera's.
for(unsigned int i=0; i<view->getNumSlaves(); ++i)
{
osg::Camera* slave_camera = view->getSlave(i)._camera.get();
if (slave_camera)
{
osg::Camera::BufferAttachmentMap::const_iterator ba_itr = slave_camera->getBufferAttachmentMap().find(osg::Camera::COLOR_BUFFER);
if (ba_itr != slave_camera->getBufferAttachmentMap().end())
{
if (ba_itr->second._texture == texture)
{
osg::TextureRectangle* tr = dynamic_cast<osg::TextureRectangle*>(ba_itr->second._texture.get());
osg::TextureCubeMap* tcm = dynamic_cast<osg::TextureCubeMap*>(ba_itr->second._texture.get());
if (tr)
{
event.addPointerData(new osgGA::PointerData(slave_camera, tc.x(), 0.0f, static_cast<float>(tr->getTextureWidth()),
tc.y(), 0.0f, static_cast<float>(tr->getTextureHeight())));
}
else if (tcm)
{
OSG_NOTICE<<" Slave has matched texture cubemap"<<ba_itr->second._texture.get()<<", "<<ba_itr->second._face<<std::endl;
}
else
{
event.addPointerData(new osgGA::PointerData(slave_camera, tc.x(), 0.0f, 1.0f,
tc.y(), 0.0f, 1.0f));
}
}
}
}
}
}
}
}
}
}
}