PolynomialSpringsForceField
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Context: Sofa.Component.SolidMechanics.Spring

Simple elastic springs applied to given degrees of freedom between their current and rest shape position

Data:
 - name : object name
 - printLog : if true, emits extra messages at runtime.
 - tags : list of the subsets the objet belongs to
 - bbox : this object bounding box
 - componentState : The state of the component among (Dirty, Valid, Undefined, Loading, Invalid).
 - listening : if true, handle the events, otherwise ignore the events
 - isCompliance : Consider the component as a compliance, else as a stiffness
 - rayleighStiffness : Rayleigh damping - stiffness matrix coefficient
 - firstObjectPoints : points related to the first object
 - secondObjectPoints : points related to the second object
 - polynomialStiffness : coefficients for all spring polynomials
 - polynomialDegree : vector of values that show polynomials degrees
 - computeZeroLength : flag to compute initial length for springs
 - zeroLength : initial length for springs
 - recompute_indices : Recompute indices (should be false for BBOX)
 - compressible : Indicates if object compresses without reactio force
 - drawMode : The way springs will be drawn:
- 0: Line
- 1:Cylinder
- 2: Arrow
 - showArrowSize : size of the axis
 - springColor : spring color
 - showIndicesScale : Scale for indices display. (default=0.02)

Links:
 - context : Graph Node containing this object (or BaseContext::getDefault() if no graph is used
 - slaves : Sub-objects used internally by this object
 - master : nullptr for regular objects, or master object for which this object is one sub-objects
 - mechanicalStates : List of mechanical states to which this component is associated
 - object1 : First object associated to this component
 - object2 : Second object associated to this component