org.simBio.core.integrator
Class Euler

java.lang.Object
  org.simBio.core.Component
      org.simBio.core.Parameter
          org.simBio.core.integrator.Euler

All Implemented Interfaces:

Node, Variable

Direct Known Subclasses:

Positive

public class Euler
extends Parameter
implements Variable

the variable calculated by euler method
オイラー法で計算される変数

Version:

$Id: Euler.java,v 1.3 2006/06/10 07:20:56 nsarai Exp $

Author:

Nobuaki Sarai

Field Summary

protected double

dydt dy/dt

Fields inherited from class org.simBio.core.Parameter

value

Fields inherited from interface org.simBio.core.Variable

TINY

Constructor Summary

Euler()

Method Summary

void	addDydt(double d) always throws UnsupportedOperationException, need to implement 'Node'
void	addValue(double value) log warn, this Method should not be used.
double	getDydt() return dy/dt dy/dtの値を返す。
double	getDydtOverY() dy/dtを現在値(y)で割った値を返す。
void	setValue(double newValue) log warn, this Method should not be used.
protected void	update(double dt) calculate new y = old y + dy/dt * dt, clear dy/dt new y = old y + dy/dt * dtを計算し、dy/dtを0にする

Methods inherited from class org.simBio.core.Parameter

getValue, getValueString, prepare, setInitializer, setValueString, setValueToField

Methods inherited from class org.simBio.core.Component

accept, end, getIndent, getIndentedShortName, getName, getName, getParent, getRoot, getShortName, getUnits, isNamed, isPrefixed, logIndented, quit, setLinks

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.simBio.core.Node

getValue

Field Detail

dydt

protected double dydt

dy/dt

Constructor Detail

Euler

public Euler()

Method Detail

addDydt

public void addDydt(double d)

Description copied from class: Component

always throws UnsupportedOperationException, need to implement 'Node'

Specified by:

addDydt in interface Node

Overrides:

addDydt in class Component

Parameters:

d - dy/dt

See Also:

Node.addDydt(double)

getDydt

public double getDydt()

Description copied from interface: Variable

return dy/dt
dy/dtの値を返す。

Specified by:

getDydt in interface Variable

Returns:

dy/dt

See Also:

Variable.getDydt()

update

protected void update(double dt)

calculate new y = old y + dy/dt * dt, clear dy/dt
new y = old y + dy/dt * dtを計算し、dy/dtを0にする

Parameters:

dt -

getDydtOverY

public double getDydtOverY()

Description copied from interface: Variable

dy/dtを現在値(y)で割った値を返す。

Specified by:

getDydtOverY in interface Variable

Returns:

dy/dt over y

See Also:

Variable.getDydtOverY()

setValue

public void setValue(double newValue)

log warn, this Method should not be used.

Specified by:

setValue in interface Node

Overrides:

setValue in class Parameter

Parameters:

newValue -

See Also:

Node.setValue(double)

addValue

public void addValue(double value)

log warn, this Method should not be used.

Specified by:

addValue in interface Node

Overrides:

addValue in class Parameter

Parameters:

value -