Integrator Examples

Adaptive RKF45

local integrator = sim.sim_create_context_integrator(ctx, "rkf45", {
    initial_dt = 0.02,
    min_dt = 1.0e-4,
    max_dt = 0.1,
    tolerance = 1.0e-4,
    safety = 0.9,
    adaptive = true
})
sim.sim_set_integrator(ctx, integrator)

Fixed-step RK4

local integrator = sim.sim_create_context_integrator(ctx, "rk4", {
    initial_dt = 0.01,
    min_dt = 0.01,
    max_dt = 0.01
})
sim.sim_set_integrator(ctx, integrator)

Implicit Crank–Nicolson

local integrator = sim.sim_create_context_integrator(ctx, "crank_nicolson", {
    initial_dt = 0.05
})
sim.sim_set_integrator(ctx, integrator)

Subordination with stochastic strength

local integrator = sim.sim_create_context_integrator(ctx, "subordination", {
    initial_dt = 0.01,
    enable_stochastic = true,
    stochastic_strength = 0.2,
    random_seed = 1337
})
sim.sim_set_integrator(ctx, integrator)