| absorption (defined in _tagXXPlanarObstacle) | _tagXXPlanarObstacle | |
| distance (defined in _tagXXPlanarObstacle) | _tagXXPlanarObstacle | |
| normal (defined in _tagXXPlanarObstacle) | _tagXXPlanarObstacle | |
| reflection (defined in _tagXXPlanarObstacle) | _tagXXPlanarObstacle |
1.6.1