How does Laue’s approach differ from Bragg’s approach?

According to Bragg's law,the crystal is considered as a set of equal spaced parallel planes of ions on atoms.X-ray are reflected by the ions on atoms on one plane.Reflected rays from two successive planes interfere constructively.

But in Laue’s approach ,there is no concept of parallel planes.X-rays are scattered from the lattice points(atoms or ions) in all directions and maximum will occur when scattered rays interfere constructively.