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Spring
A force that moves a physics body to a location with a spring motion. The body can be moved to another physics body, or an anchor point.
Overview
Options
Methods
Spring(options)
Constructor Parameters
options
Object
options to set on drag
Methods
Spring.FORCE_FUNCTIONS()ProtectedStatic
FENE(dist, rMax)
A FENE (Finitely Extensible Nonlinear Elastic) spring force see: http://en.wikipedia.org/wiki/FENE
Parameters
Returns
FENE(dist)
A Hookean spring force, linear in the displacement see: http://en.wikipedia.org/wiki/Hooke's_law
Parameters
Returns
Spring.DEFAULT_OPTIONS()ProtectedStatic
period()
The amount of time in milliseconds taken for one complete oscillation when there is no damping Range : [150, Infinity]
dampingRatio()
The damping of the spring. Range : [0, 1] 0 = no damping, and the spring will oscillate forever 1 = critically damped (the spring will never oscillate)
length()
The rest length of the spring Range : [0, Infinity]
length()
The maximum length of the spring (for a FENE spring) Range : [0, Infinity]
anchor()
The location of the spring's anchor, if not another physics body
forceFunction()
The type of spring force
setOptions(options)
Basic options setter
Parameters
applyForce(targets)
Adds a spring force to a physics body's force accumulator.
Parameters
getEnergy(targets)
Calculates the potential energy of the spring.