Orrery
A GPU-accelerated N-body gravitational simulator
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reference_kernel.hpp
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1#pragma once
2
43
44#include <span>
45
46#include "orrery/core/softening.hpp"
47#include "orrery/core/types.hpp"
48#include "orrery/core/vec3_span.hpp"
49
50namespace orrery::solvers {
51
58struct ReferenceAcceleration {
59 double x{};
60 double y{};
61 double z{};
62};
63
73[[nodiscard]] ReferenceAcceleration
74reference_acceleration(core::Vec3Span<const core::Real> positions,
75 std::span<const core::Real> masses, core::Index target,
76 core::Softening softening);
77
78} // namespace orrery::solvers
orrery::core::Softening
The softening length of the Plummer kernel above.
Definition softening.hpp:49
orrery::solvers::reference_acceleration
ReferenceAcceleration reference_acceleration(core::Vec3Span< const core::Real > positions, std::span< const core::Real > masses, core::Index target, core::Softening softening)
The acceleration on particle target, from every other particle.
softening.hpp
Plummer softening, defined once for everything that needs it.
orrery::core::Vec3Span
A view of three component arrays of equal length.
Definition vec3_span.hpp:33
orrery::solvers::ReferenceAcceleration
An acceleration in double precision, whatever the build's scalar type is.
Definition reference_kernel.hpp:58
types.hpp
The scalar and index types that every layer of the project agrees on.
orrery::core::Index
std::size_t Index
The type of a particle index and of any count of particles.
Definition types.hpp:45
vec3_span.hpp
Three parallel component arrays, viewed as one sequence of 3-vectors.