getNeighbors method
Get neighbors within smoothing volume, save in the array neighbors
Implementation
void getNeighbors(Body particle, List<Body> neighbors) {
final N = particles.length;
final id = particle.id;
final r2 = smoothingRadius * smoothingRadius;
final dist = _sphSystemGetNeighborsDist;
for (int i = 0; i != N; i++) {
final p = particles[i];
p.position.vsub(particle.position, dist);
if (id != p.id && dist.lengthSquared() < r2) {
neighbors.add(p);
}
}
}