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## igeo
Class ITension

    java.lang.Object
      igeo.IDynamicsBase
          igeo.ITension

All Implemented Interfaces:
  IDynamics, ISubobject, ITensionI

    public class ITension

extends IDynamicsBase
implements ITensionI

Class of IDynamics to simulate tension force between two particles.

Author:
  Satoru Sugihara

Field Summary
`boolean` | `constantTension` if constantTension is true, amount of force is always constant and it's equals to tension.
`double` | `maxTension`
`IParticleI` | `pt1`
`IParticleI` | `pt2`
`double` | `tension` tension is a coefficient to convert distance of two points to amount of force.

Fields inherited from class igeo.IDynamicsBase
`parent, targets`

Fields inherited from interface igeo.ITensionI
`defaultTension`

Constructor Summary
`ITension(IParticleI p1, IParticleI p2)`
`ITension(IParticleI p1, IParticleI p2, double tension)`
`ITension(IParticleI p1, IParticleI p2, double tension, IObject parent)`
`ITension(IParticleI p1, IParticleI p2, IObject parent)`
`ITension(IVecI p1, IVecI p2)`
`ITension(IVecI p1, IVecI p2, double tension)`
`ITension(IVecI p1, IVecI p2, double tension, IObject parent)`
`ITension(IVecI p1, IVecI p2, IObject parent)`

Method Summary
`boolean` | `constant()` if constantTension is true, amount of force is always constant and it's equals to tension.
`ITension` | `constant(boolean cnst)` if constantTension is true, amount of force is always constant and it's equals to tension.
`void` | `interact(java.util.ArrayList<IDynamics> dynamics)` behavior definition of interaction with other dynamic objects.
`double` | `maxTension()` if maxTension is set to be positive number, it limits the force (distance * tension) is cut off at maxTension.
`ITension` | `maxTension(double maxTension)` if maxTension is set to be positive number, it limits the force (distance * tension) is cut off at maxTension if constant is set, maxTension is ignored.
`ITension` | `parent(IObject par)` setting parent object
`IParticleI` | `particle(int i)` alias of pt1()
`IParticleI` | `particle1()` alias of pt1()
`IParticleI` | `particle2()` alias of pt2()
`IVec` | `pos(int i)` position of particle(i)
`IVec` | `pos1()` position of particle1()
`IVec` | `pos2()` position of particle2()
`IParticleI` | `pt(int i)` getting end point.
`IParticleI` | `pt1()` getting end point1.
`IParticleI` | `pt2()` getting end point2.
`ITension` | `removeTarget(int i)` remove target object.
`ITension` | `removeTarget(IObject obj)` remove target object.
`ITension` | `target(IObject targetObj)` add terget object to be updated by this dynamic object.
`double` | `tension()` tension is a coefficient to convert distance of two points to amount of force.
`ITension` | `tension(double tension)` tension is a coefficient to convert distance of two points to amount of force.

Methods inherited from class igeo.IDynamicsBase
`initDynamicsBase, initDynamicsBase, initDynamicsBase, localDynamics, parent, postinteract, postupdate, preinteract, preupdate, target, targetNum, targets, update, updateTarget`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### pt1

    public IParticleI pt1

### pt2

    public IParticleI pt2

### tension

    public double tension

  tension is a coefficient to convert distance of two points to amount of force.

### constantTension

    public boolean constantTension

  if constantTension is true, amount of force is always constant and it's equals to tension. Only direction of force changes. But if the distance is zero, force is also zero.

### maxTension

    public double maxTension

Constructor Detail

### ITension

    public ITension(IParticleI p1,
                    IParticleI p2,
                    double tension,
                    IObject parent)

### ITension

    public ITension(IVecI p1,
                    IVecI p2,
                    double tension,
                    IObject parent)

### ITension

    public ITension(IParticleI p1,
                    IParticleI p2,
                    IObject parent)

### ITension

    public ITension(IVecI p1,
                    IVecI p2,
                    IObject parent)

### ITension

    public ITension(IParticleI p1,
                    IParticleI p2,
                    double tension)

### ITension

    public ITension(IVecI p1,
                    IVecI p2,
                    double tension)

### ITension

    public ITension(IParticleI p1,
                    IParticleI p2)

### ITension

    public ITension(IVecI p1,
                    IVecI p2)

Method Detail

### tension

    public double tension()

  Description copied from interface: `ITensionI`
  tension is a coefficient to convert distance of two points to amount of force.

  Specified by:
    `tension` in interface `ITensionI`

### tension

    public ITension tension(double tension)

  Description copied from interface: `ITensionI`
  tension is a coefficient to convert distance of two points to amount of force.

  Specified by:
    `tension` in interface `ITensionI`

### constant

    public boolean constant()

  Description copied from interface: `ITensionI`
  if constantTension is true, amount of force is always constant and it's equals to tension. Only direction of force changes. But if the distance is zero, force is also zero.

  Specified by:
    `constant` in interface `ITensionI`

### constant

    public ITension constant(boolean cnst)

  Description copied from interface: `ITensionI`
  if constantTension is true, amount of force is always constant and it's equals to tension. Only direction of force changes. But if the distance is zero, force is also zero.

  Specified by:
    `constant` in interface `ITensionI`

### maxTension

    public double maxTension()

  if maxTension is set to be positive number, it limits the force (distance * tension) is cut off at maxTension. if constant is set, maxTension is ignored.

  Specified by:
    `maxTension` in interface `ITensionI`

### maxTension

    public ITension maxTension(double maxTension)

  if maxTension is set to be positive number, it limits the force (distance * tension) is cut off at maxTension if constant is set, maxTension is ignored.

  Specified by:
    `maxTension` in interface `ITensionI`

### pt

    public IParticleI pt(int i)

  getting end point. i==0 or i==1. if i is other value, returns first point.

  Specified by:
    `pt` in interface `ITensionI`

### particle

    public IParticleI particle(int i)

  alias of pt1()

  Specified by:
    `particle` in interface `ITensionI`

### pos

    public IVec pos(int i)

  position of particle(i)

  Specified by:
    `pos` in interface `ITensionI`

### pt1

    public IParticleI pt1()

  getting end point1.

  Specified by:
    `pt1` in interface `ITensionI`

### particle1

    public IParticleI particle1()

  alias of pt1()

  Specified by:
    `particle1` in interface `ITensionI`

### pos1

    public IVec pos1()

  position of particle1()

  Specified by:
    `pos1` in interface `ITensionI`

### pt2

    public IParticleI pt2()

  getting end point2.

  Specified by:
    `pt2` in interface `ITensionI`

### particle2

    public IParticleI particle2()

  alias of pt2()

  Specified by:
    `particle2` in interface `ITensionI`

### pos2

    public IVec pos2()

  position of particle2()

  Specified by:
    `pos2` in interface `ITensionI`

### parent

    public ITension parent(IObject par)

  Description copied from interface: `ISubobject`
  setting parent object

  Specified by:
    `parent` in interface `ISubobject`
  Overrides:
    `parent` in class `IDynamicsBase`

### target

    public ITension target(IObject targetObj)

  Description copied from class: `IDynamicsBase`
  add terget object to be updated by this dynamic object.

  Specified by:
    `target` in interface `IDynamics`
  Overrides:
    `target` in class `IDynamicsBase`

### removeTarget

    public ITension removeTarget(int i)

  Description copied from class: `IDynamicsBase`
  remove target object.

  Specified by:
    `removeTarget` in interface `IDynamics`
  Overrides:
    `removeTarget` in class `IDynamicsBase`

### removeTarget

    public ITension removeTarget(IObject obj)

  Description copied from class: `IDynamicsBase`
  remove target object.

  Specified by:
    `removeTarget` in interface `IDynamics`
  Overrides:
    `removeTarget` in class `IDynamicsBase`

### interact

    public void interact(java.util.ArrayList<IDynamics> dynamics)

  Description copied from class: `IDynamicsBase`
  behavior definition of interaction with other dynamic objects. The server puts all dynamic objects including itself.

  Specified by:
    `interact` in interface `IDynamics`
  Overrides:
    `interact` in class `IDynamicsBase`

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