igeo

Class ISpring

java.lang.Object

igeo.IDynamicsBase

igeo.ISpring

All Implemented Interfaces:

IDynamics, ISpringI, ISubobject, ITensionI

public class ISpring
extends IDynamicsBase
implements ISpringI

Class of IDynamics to simulate spring force between two particles with specified length.

Author:

Satoru Sugihara

Field Summary

Fields

Modifier and Type	Field and Description
boolean	constantTension if constantTension is true, amount of force is always constant and it's equals to tension.
double	length
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

Constructors

Constructor and Description
ISpring(IParticleI p1, IParticleI p2)
ISpring(IParticleI p1, IParticleI p2, double tension)
ISpring(IParticleI p1, IParticleI p2, double tension, double length)
ISpring(IParticleI p1, IParticleI p2, double tension, double length, IObject parent)
ISpring(IParticleI p1, IParticleI p2, double tension, IObject parent)
ISpring(IParticleI p1, IParticleI p2, IObject parent)
ISpring(IVecI p1, IVecI p2)
ISpring(IVecI p1, IVecI p2, double tension)
ISpring(IVecI p1, IVecI p2, double tension, double length)
ISpring(IVecI p1, IVecI p2, double tension, double length, IObject parent)
ISpring(IVecI p1, IVecI p2, double tension, IObject parent)
ISpring(IVecI p1, IVecI p2, IObject parent)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	constant() if constantTension is true, amount of force is always constant and it's equals to tension.
ISpring	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	len() get length
ISpring	len(double length) set length
ISpring	len(IVecI p1, IVecI p2) set length by two points
double	length() alias of len
ISpring	length(double length) alias of len
ISpring	length(IVecI p1, IVecI p2) alias of len
double	maxTension() if maxTension is set to be positive number, it limits the force (distance * tension) is cut off at maxTension.
ISpring	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.
ISpring	parent(IObject par) setting parent object
IParticleI	particle(int i) alias of pt(int)
IParticleI	particle1() alias of pt1()
IParticleI	particle2() alias of pt2()
IVec	pos(int i) position of particle(int 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.
ISpring	removeTarget(int i) remove target object.
ISpring	removeTarget(IObject obj) remove target object.
ISpring	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.
ISpring	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

length

public double length

Constructor Detail

ISpring

public ISpring(IParticleI p1,
       IParticleI p2,
       double tension,
       double length,
       IObject parent)

ISpring

public ISpring(IVecI p1,
       IVecI p2,
       double tension,
       double length,
       IObject parent)

ISpring

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

ISpring

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

ISpring

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

ISpring

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

ISpring

public ISpring(IParticleI p1,
       IParticleI p2,
       double tension,
       double length)

ISpring

public ISpring(IVecI p1,
       IVecI p2,
       double tension,
       double length)

ISpring

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

ISpring

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

ISpring

public ISpring(IParticleI p1,
       IParticleI p2)

ISpring

public ISpring(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 ISpring 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 ISpring 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 ISpring 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

len

public double len()

Description copied from interface: ISpringI

get length

Specified by:

len in interface ISpringI

len

public ISpring len(double length)

Description copied from interface: ISpringI

set length

Specified by:

len in interface ISpringI

len

public ISpring len(IVecI p1,
          IVecI p2)

Description copied from interface: ISpringI

set length by two points

Specified by:

len in interface ISpringI

length

public double length()

Description copied from interface: ISpringI

alias of len

Specified by:

length in interface ISpringI

length

public ISpring length(double length)

Description copied from interface: ISpringI

alias of len

Specified by:

length in interface ISpringI

length

public ISpring length(IVecI p1,
             IVecI p2)

Description copied from interface: ISpringI

alias of len

Specified by:

length in interface ISpringI

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 pt(int)

Specified by:

particle in interface ITensionI

pos

public IVec pos(int i)

position of particle(int 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 ISpring parent(IObject par)

Description copied from interface: ISubobject

setting parent object

Specified by:

parent in interface ISubobject

Overrides:

parent in class IDynamicsBase

target

public ISpring 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 ISpring removeTarget(int i)

Description copied from class: IDynamicsBase

remove target object.

Specified by:

removeTarget in interface IDynamics

Overrides:

removeTarget in class IDynamicsBase

removeTarget

public ISpring 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