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The Essential Guide to Physics for Flash Games, Animation, and Simulations by Adrian Dobre, Dev Ramtal

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Verlet integration

The third and final class of integration schemes that we'll discuss is called Verlet integration. Originally developed for handling complex and variable molecular dynamics simulations because of its stability properties, the approach is now widely used in game programming and animation.

Verlet integration is employed in so-called Verlet systems to simulate the motion of particles subject to constraints. This technique can be applied to connected structures as in ragdoll physics, forward and inverse kinematics, and even rigid body systems. We do not have space to explore this approach, but we refer you to a very good introduction to the subject in the book Advanced ActionScript 3.0 Animation, by Keith Peters. We mention Verlet ...

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