pub fn leapfrog_step(
pos: &[f64],
vel: &[f64],
acc: &[f64],
dt: f64,
) -> (Vec<f64>, Vec<f64>)Expand description
Leapfrog step (Störmer-Verlet).
Returns (new_pos, new_vel):
pos_new = pos + vel*dt + 0.5*acc*dt²vel_new = vel + acc*dt