IvDragger::IvDragger(QtCoinViewerPtr viewer, ItemPtr pItem, float draggerScale) { _selectedItem = pItem; _viewer = viewer; _scale = draggerScale; _penv = viewer->GetEnv(); //_ptext = NULL; // set some default behavioral options _checkCollision = false; _prevtransparency = pItem->GetIvTransparency()->value; pItem->GetIvTransparency()->value = SoGLRenderAction::SCREEN_DOOR; if( !!pItem &&(pItem->GetIvRoot() != NULL)) { _GetBounds(pItem->GetIvRoot(), _ab); // make the item transparent SoSearchAction search; search.setType(SoMaterial::getClassTypeId()); search.setInterest(SoSearchAction::ALL); search.apply(pItem->GetIvRoot()); for(int i = 0; i < search.getPaths().getLength(); ++i) { SoPath* path = search.getPaths()[i]; SoMaterial* pmtrl = (SoMaterial*)path->getTail(); vtransparency.push_back(pmtrl->transparency[0]); pmtrl->transparency = 0.25f; } _vlinkaxes.resize(pItem->GetNumIvLinks()); for(size_t i = 0; i < _vlinkaxes.size(); ++i) { _vlinkaxes[i] = _CreateAxes(i == 0 ? 1.0f : 0.25f,0.5f); pItem->GetIvLink(i)->addChild(_vlinkaxes[i]); } } }