void Ephemeris<Frame>::ComputeMasslessBodiesGravitationalAccelerations(
Instant const& t,
std::vector<Position<Frame>> const& positions,
not_null<std::vector<Vector<Acceleration, Frame>>*> const accelerations,
not_null<std::vector<typename ContinuousTrajectory<Frame>::Hint>*>
const hints) const {
CHECK_EQ(positions.size(), accelerations->size());
accelerations->assign(accelerations->size(), Vector<Acceleration, Frame>());
for (std::size_t b1 = 0; b1 < number_of_oblate_bodies_; ++b1) {
MassiveBody const& body1 = *bodies_[b1];
ComputeGravitationalAccelerationByMassiveBodyOnMasslessBodies<
/*body1_is_oblate=*/true>(
t,
body1, b1,
positions,
accelerations,
&(*hints)[b1]);
}
for (std::size_t b1 = number_of_oblate_bodies_;
b1 < number_of_oblate_bodies_ +
number_of_spherical_bodies_;
++b1) {
MassiveBody const& body1 = *bodies_[b1];
ComputeGravitationalAccelerationByMassiveBodyOnMasslessBodies<
/*body1_is_oblate=*/false>(
t,
body1, b1,
positions,
accelerations,
&(*hints)[b1]);
}
}
void Ephemeris<Frame>::ComputeMassiveBodiesGravitationalAccelerations(
Instant const& t,
std::vector<Position<Frame>> const& positions,
not_null<std::vector<Vector<Acceleration, Frame>>*> const
accelerations) const {
accelerations->assign(accelerations->size(), Vector<Acceleration, Frame>());
for (std::size_t b1 = 0; b1 < number_of_oblate_bodies_; ++b1) {
MassiveBody const& body1 = *bodies_[b1];
ComputeGravitationalAccelerationByMassiveBodyOnMassiveBodies<
/*body1_is_oblate=*/true,
/*body2_is_oblate=*/true>(
body1, b1,
/*bodies2=*/bodies_,
/*b2_begin=*/b1 + 1,
/*b2_end=*/number_of_oblate_bodies_,
positions,
accelerations);
ComputeGravitationalAccelerationByMassiveBodyOnMassiveBodies<
/*body1_is_oblate=*/true,
/*body2_is_oblate=*/false>(
body1, b1,
/*bodies2=*/bodies_,
/*b2_begin=*/number_of_oblate_bodies_,
/*b2_end=*/number_of_oblate_bodies_ + number_of_spherical_bodies_,
positions,
accelerations);
}
for (std::size_t b1 = number_of_oblate_bodies_;
b1 < number_of_oblate_bodies_ +
number_of_spherical_bodies_;
++b1) {
MassiveBody const& body1 = *bodies_[b1];
ComputeGravitationalAccelerationByMassiveBodyOnMassiveBodies<
/*body1_is_oblate=*/false,
/*body2_is_oblate=*/false>(
body1, b1,
/*bodies2=*/bodies_,
/*b2_begin=*/b1 + 1,
/*b2_end=*/number_of_oblate_bodies_ + number_of_spherical_bodies_,
positions,
accelerations);
}
}
