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);
}
}
}
