Matter.js是一款采用JavaScript编写的2D刚体物理引擎。

var Bodies = Matter.Bodies;  var Engine = Matter.Engine;  var engine = Engine.create(container, options);  var World = Matter.World;    World.addBody(engine.world, Bodies.rectangle(300, 180, 700, 20, { isStatic: true, angle: Math.PI * 0.06 }));  World.addBody(enigne.world, Bodies.rectangle(300, 70, 40, 40, { friction: 0.001 }));

特性：

• Physical properties (mass, area, density etc.)
• Rigid bodies of any convex polygon
• Stable stacking and resting
• Restitution (elastic and inelastic collisions)
• Conservation of momentum
• Friction and resistance
• Constraints
• Gravity
• Composite bodies
• Sleeping and static bodies
• Original JavaScript physics implementation (not a port)
• HTML5 canvas renderer
• Mobile-compatible (touch, scaleable)
• Cross-browser (chrome, firefox, IE8+)
• World state serialisation (requires resurrect.js)
• Built in GUI for testing (requires dat.gui.js)
• Time scaling (slow-mo, speed-up)
• Broad-phase, mid-phase and narrow-phase collisions

项目主页：http://www.open-open.com/lib/view/home/1393999878115