/** Returns the average of all normals of the mesh (not normalized, can be zero) **/
Vec3f VRGeometry::getAverageNormal() {
if (!meshSet) return Vec3f(0,1,0);
GeoVec3fPropertyRecPtr norms = dynamic_cast<GeoVec3fProperty*>(mesh->getNormals());
Vec3f normal = Vec3f(0,0,0);
for (uint i=0;i<norms->size();i++) {
normal += Vec3f(norms->getValue(i));
}
normal *= 1./norms->size();
return normal;
}
void VRGeometry::readSharedMemory(string segment, string object) {
VRSharedMemory sm(segment, false);
int sm_state = sm.getObject<int>(object+"_state");
while (sm.getObject<int>(object+"_state") == sm_state) {
cout << "VRGeometry::readSharedMemory: waiting for data: " << sm_state << endl;
sleep(1);
}
// read buffer
auto sm_types = sm.getVector<int>(object+"_types");
auto sm_lengths = sm.getVector<int>(object+"_lengths");
auto sm_pos = sm.getVector<float>(object+"_pos");
auto sm_norms = sm.getVector<float>(object+"_norms");
auto sm_inds = sm.getVector<int>(object+"_inds");
auto sm_cols = sm.getVector<float>(object+"_cols");
GeoPnt3fPropertyRecPtr pos = GeoPnt3fProperty::create();
GeoVec3fPropertyRecPtr norms = GeoVec3fProperty::create();
GeoUInt32PropertyRecPtr inds = GeoUInt32Property::create();
GeoUInt32PropertyRecPtr types = GeoUInt32Property::create();
GeoUInt32PropertyRecPtr lengths = GeoUInt32Property::create();
GeoVec4fPropertyRecPtr cols = GeoVec4fProperty::create();
cout << "SM mesh read: " << sm_types.size() << " " << sm_lengths.size() << " " << sm_pos.size() << " " << sm_norms.size() << " " << sm_inds.size() << " " << sm_cols.size() << endl;
if (sm_types.size() > 0) for (auto& t : sm_types) types->addValue(t);
if (sm_lengths.size() > 0) for (auto& l : sm_lengths) lengths->addValue(l);
for (auto& i : sm_inds) inds->addValue(i);
if (sm_pos.size() > 0) for (int i=0; i<sm_pos.size()-2; i+=3) pos->addValue(Pnt3f(sm_pos[i], sm_pos[i+1], sm_pos[i+2]));
if (sm_norms.size() > 0) for (int i=0; i<sm_norms.size()-2; i+=3) norms->addValue(Vec3f(sm_norms[i], sm_norms[i+1], sm_norms[i+2]));
if (sm_cols.size() > 0) for (int i=0; i<sm_cols.size()-2; i+=3) cols->addValue(Pnt3f(sm_cols[i], sm_cols[i+1], sm_cols[i+2]));
cout << "osg mesh data: " << types->size() << " " << lengths->size() << " " << pos->size() << " " << norms->size() << " " << inds->size() << " " << cols->size() << endl;
int N = pos->size();
if (N == 0) return;
setTypes(types);
setLengths(lengths);
setPositions(pos);
if (norms->size() == N) setNormals(norms);
if (cols->size() == N) setColors(cols);
setIndices(inds);
}
