AS3開源物理引擎類庫：APE

APE (Actionscript Physics Engine)是一個免費AS3開源2D物理引擎，可用在Flash和Flex應用中。





CircleParticles
-fixed or non-fixed
-variable mass, elasticity, and surface friction

RectangleParticles
-rotatable
-fixed or non-fixed
-variable mass, elasticity, and surface friction

WheelParticles
-traction and angular velocity
-fixed or non-fixed
-variable mass, elasticity, and surface friction

SpringConstraints
-stiffness
-collidable or non-collidible
-collidable constraints have variable width and scale

Grouping
-Composite class may contain Particles, and Constraints
-Group class may contain Particles, Constraints, and Composites

Collision
-multisampling
-static collision tests

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