| 40 |  | */ | 
| 41 |  |  | 
| 42 |  | #include "primitives/DirectionalAtom.hpp" | 
| 43 | < |  | 
| 43 | > | #include "utils/simError.h" | 
| 44 |  | namespace oopse { | 
| 45 |  |  | 
| 46 |  | DirectionalAtom::DirectionalAtom(DirectionalAtomType* dAtomType) | 
| 49 |  | if (dAtomType->isMultipole()) { | 
| 50 |  | electroBodyFrame_ = dAtomType->getElectroBodyFrame(); | 
| 51 |  | } | 
| 52 | + |  | 
| 53 | + | //check if one of the diagonal inertia tensor of this directional atom  is zero | 
| 54 | + | int nLinearAxis = 0; | 
| 55 | + | Mat3x3d inertiaTensor = getI(); | 
| 56 | + | for (int i = 0; i < 3; i++) { | 
| 57 | + | if (fabs(inertiaTensor(i, i)) < oopse::epsilon) { | 
| 58 | + | linear_ = true; | 
| 59 | + | linearAxis_ = i; | 
| 60 | + | ++ nLinearAxis; | 
| 61 | + | } | 
| 62 | + | } | 
| 63 | + |  | 
| 64 | + | if (nLinearAxis > 1) { | 
| 65 | + | sprintf( painCave.errMsg, | 
| 66 | + | "Directional Atom error.\n" | 
| 67 | + | "\tOOPSE found more than one axis in this directional atom with a vanishing \n" | 
| 68 | + | "\tmoment of inertia."); | 
| 69 | + | painCave.isFatal = 1; | 
| 70 | + | simError(); | 
| 71 | + | } | 
| 72 | + |  | 
| 73 |  | } | 
| 74 |  |  | 
| 75 |  | Mat3x3d DirectionalAtom::getI() { |