Ferrofluid Spikes: 2D Height-Field Simulation

This 2D companion runs the same orbiting-magnet field equations as the 3D ferrofluid lab, but reads the result as a shaded top-down height field instead of a rendered mesh: brightness marks surface height and a slope-shading pass fakes the raised look of a spike without any 3D geometry, so the underlying Gaussian field math is easier to inspect directly.