little fun with gaming physic, written using Three.js, the 3D library built ontop of HTML5 and WebGL. Physics engines like ODE or PhysX support a wide range of simulation: rigid body, soft body objects… While those engines are powerful, they are somewhat weak in scalability, e.g: to simulate the flag below, we need to create an array of hundreds of objects, which may not really feasible on small devices.

This demo tries its own physical calculation called Verlet integration: numerical method to apply Newton’s second law of motion to a system of point masses. Verlet integration, despite its complicated formal description, is simple enough to be calculated and executed in real time on the low end mobile devices.