VRObjectPtr VRFactory::setupLod(vector<string> paths) {
vector<VRObjectPtr> objects;
for (auto p : paths) {
auto res = VRTransform::create("factory");
loadVRML(p,0,res);
objects.push_back( res );
}
Vec3f p;
commitChanges();
cout << "setupLod - changes commited\n";
if (objects.size() == 0) return 0;
// use all geometry to create micro lods
VRObjectPtr root = VRObject::create("factory_lod_root");
root->setPersistency(0);
vector<VRLodPtr> micro_lods;
for (uint i = 0; i<objects.size(); i++) {
vector<VRObjectPtr> geos = objects[i]->getChildren(true, "Geometry");
VRProgress prog("setup factory LODs ", geos.size());
for (auto g : geos) {
prog.update(1);
VRLodPtr lod = VRLod::create("factory_lod");
lod->addChild(g);
lod->addEmpty();
lod->setCenter( g->getBBCenter() );
lod->setDistance(0, max(g->getBBMax()*15, 1.0f));
micro_lods.push_back(lod);
}
}
commitChanges();
// use the micro lods to create space lods
VRLODSpacePtr lodspace = VRLODSpace::create();
for (auto l : micro_lods) {
lodspace->add(l);
}
root->addChild(lodspace);
lodspace->finalize();
return root;
}
