Module lightning 

Lightning generation using the Dielectric Breakdown Model (DBM). Solves Laplace’s equation to determine growth direction, with branching and return stroke animation.

Structs

DielectricBreakdown

Grid for dielectric breakdown simulation.

LightningBolt

A lightning bolt represented as line segments with brightness.

LightningRenderer

Renderer for lightning bolts.

Functions

add_branches

Add branches to an existing bolt. Each segment has a probability of spawning a short branch.

animate_bolt

Animate a bolt: leader progresses downward, then return stroke brightens. Returns segments with animated brightness at the given time.

bolt_with_return_stroke

Apply a return stroke effect: brighten the main channel.

generate_bolt

Generate a lightning bolt from start to end using the Dielectric Breakdown Model.

laplace_solve

Solve Laplace’s equation ∇²φ = 0 on a grid using Jacobi/SOR iteration. boundary_mask[i] = true means the cell is a fixed boundary.

stepped_leader

Generate a stepped leader: a series of step-wise advances with random jitter.