SoPath *pickFilterCB(void *, const SoPickedPoint *pick) { SoPath *path = pick->getPath(); for (int i=0; i< path->getLength(); i++) { LabObject *found = NULL; if (LabObject::isLabObject(path->getNodeFromTail(i), &found)) { //return path->copy(0, i+1); return path->copy(0, path->getLength()-i); } } return new SoPath(); }
////////////////////////////////////////////////////////////////////////////// // // beginTraversal - have the base class render the passed scene graph, // then render highlights for our selection node. // void SoLineHighlightRenderAction::apply(SoNode *node) // ////////////////////////////////////////////////////////////////////////////// { // Render the scene SoGLRenderAction::apply(node); // Render the highlight? if (! hlVisible) return; // Add the rendering localRoot beneath our local scene graph localRoot // so that we can find a path from localRoot to the selection node // which is under the render root. localRoot->addChild(node); // Find the selection node under the local root static SoSearchAction *sa = NULL; if (sa == NULL) sa = new SoSearchAction; else sa->reset(); sa->setFind(SoSearchAction::TYPE); sa->setInterest(SoSearchAction::FIRST); sa->setType(SoSelection::getClassTypeId()); sa->apply(localRoot); SoPath *hlPath = sa->getPath(); if (hlPath != NULL) { hlPath = hlPath->copy(); hlPath->ref(); // Make sure something is selected SoSelection *sel = (SoSelection *) hlPath->getTail(); if (sel->getNumSelected() > 0) { // Keep the length from the root to the selection // as an optimization so we can reuse this data int reusablePathLength = hlPath->getLength(); // For each selection path, create a new path rooted under our localRoot for (int j = 0; j < sel->getNumSelected(); j++) { // Continue the path down to the selected object. // No need to deal with p[0] since that is the sel node. SoFullPath *p = (SoFullPath *) sel->getPath(j); SoNode *pathTail = p->getTail(); if ( pathTail->isOfType(SoBaseKit::getClassTypeId())) { // Find the last nodekit on the path. SoNode *kitTail = ((SoNodeKitPath *)p)->getTail(); // Extend the selectionPath until it reaches this last kit. SoFullPath *fp = (SoFullPath *) p; int k = 0; do { hlPath->append(fp->getIndex(++k)); } while ( fp->getNode(k) != kitTail ); } else { for (int k = 1; k < p->getLength(); k++) hlPath->append(p->getIndex(k)); } // Render the shape with the local draw style to make the highlight SoGLRenderAction::apply(hlPath); // Restore hlPath for reuse hlPath->truncate(reusablePathLength); } } hlPath->unref(); } // Remove the rendering localRoot from our local scene graph localRoot->removeChild(node); }