Core engine controlling animations via physical simulation.

• bodies/Body.js: A unit controlled by the physics engine which serves to provide position and orientation.
• bodies/Circle.js: An elemental circle-shaped Body in the physics engine.
• bodies/Particle.js: A unit controlled by the physics engine which serves to provide position.
• bodies/Rectangle.js: An elemental rectangle-shaped Body in the physics engine.
• constraints/Collision.js: Allows for two circular bodies to collide and bounce off each other.
• constraints/Constraint.js: Allows for two circular bodies to collide and bounce off each other.
• constraints/Curve.js: A constraint that keeps a physics body on a given implicit curve regardless of other physical forces are applied to it.
• constraints/Distance.js: A constraint that keeps a physics body a given distance away from a given anchor, or another attached body.
• constraints/Snap.js: A spring constraint is like a spring force, except that it is always numerically stable (even for low periods).
• constraints/Surface.js: A constraint that keeps a physics body on a given implicit surface regardless of other physical forces are applied to it.
• constraints/Wall.js: A wall describes an infinite two-dimensional plane that physics bodies can collide with.
• constraints/Walls.js: Walls combines one or more Wall primitives and exposes a simple API to interact with several walls at once
• forces/Drag.js: Drag is a force that opposes velocity. Attach it to the physics engine to slow down a physics body in motion.
• forces/Force.js: Force base class.
• forces/Repulsion.js: Repulsion is a force that repels (attracts) bodies away (towards) each other.
• forces/RotationalDrag.js: Rotational drag is a force that opposes angular velocity. Attach it to a physics body to slow down its rotation.
• forces/RotationalSpring.js: A force that rotates a physics body back to target Euler angles.
• forces/Spring.js: A force that moves a physics body to a location with a spring motion.
• forces/VectorField.js: A force that moves a physics body to a location with a spring motion.
• integrators/SymplecticEuler.js: Ordinary Differential Equation (ODE) Integrator. Manages updating a physics body's state over time.
• integrators/verlet.js: Manages updating a physics body's state over time. (deprecated)
• PhysicsEngine.js: The Physics Engine is responsible for mediating Bodies and their interaction with forces and constraints.

• Reference Docs
• Animating
• Pitfalls

• David Valdman [email protected]

The framework has three main parts that application developers should expect to use:

Bodies represent physical objects. For example, the Circle class represents a solid ball, the Rectangle class represents a solid rectangular prism.

Constraints represent ways that objects can be connected. For example, you might want two objects to behave as is there were a Rope or a StiffSpring connecting them.

Forces can be thought of as soft constraints. So while StiffSpring is a constraint, Spring is a force. TODO: @dmvaldman, can you explain forces better?

Copyright (c) 2014 Famous Industries, Inc.

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