Ornament Pendulum Chaos on the Tree (2D)

A real double pendulum in side view — one ornament hinged below another, both links driven by the full nonlinear coupled equations of motion and integrated with RK4 so the genuine chaotic dynamics survive. Drag an ornament to aim the drop angle, pan and zoom the scene, then spawn a twin a fraction of a degree away and watch its trajectory and phase-space trace tear away from the original — deterministic equations, unpredictable outcome.