const double half_size = size * 0.5;
const glm::dvec3 &pos = situation.Position();
const glm::dmat3 srf(world::Planet::SurfaceOrientation(situation.Surface()));
const double half_size = size * 0.5;
const glm::dvec3 &pos = situation.Position();
const glm::dmat3 srf(world::Planet::SurfaceOrientation(situation.Surface()));