pub fn knearest_into_many(
xyz: &[[f64; 3]],
n: usize,
n_frames: usize,
simbox: &Cell,
k: usize,
mask: Option<&[bool]>,
cell_hint: Option<f64>,
out_nn: &mut [i32],
out_d2: Option<&mut [f64]>,
) -> Result<(), Error>Expand description
Frame-major batch: xyz is n_frames * n points, out_* are
n_frames * n * k. One shared cell. mask is length n or None.