jvx.numeric

Class PnOde

java.lang.Object

jv.object.PsObject

jvx.numeric.PnOde

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, PsUpdateIf

Direct Known Subclasses:

PnElasticCurvature, PnElasticOde, PnOdeExpr, PnSurfaceOde

public class PnOde
extends PsObject

Basic ode class with solver. User should override the method diffEquation with his own ode and then call solve(PgPolygon).

See Also:

Serialized Form

Author:

Konrad Polthier

Version:

02.10.99, 1.10 revised (kp) Moved to jvx.numeric from vgp.tutor.ode.
00.00.98, 1.00 created (kp)

Field Summary

Fields inherited from class jv.object.PsObject

HAS_BOUNDARY_PANEL, HAS_CONFIG_PANEL, HAS_INFO_PANEL, HAS_LABEL_PANEL, HAS_MATERIAL_PANEL, HAS_TEXTURE_PANEL, HAS_VECTOR_PANEL, INSPECTOR_INFO, INSPECTOR_INFO_EXT, IS_DELETED, IS_FIXED, IS_FOCUSSED, IS_PICKED, IS_SELECTED, IS_USED, NUM_TAGS

Constructor Summary

Constructors

Constructor and Description
PnOde()

Method Summary

Modifier and Type	Method and Description
void	diffEquation(double x, double[] y, double[] dy) Method should be overwritten y an application with problem dependent ODE.
void	init() If instance has missing name then assign default name 'Object_NUMBER' where number is the total number of already created instances.
static void	rungeKutta(PnOde anOde, double x, double[] y, double h, double[] yOut) 4th order Runge-Kutta method.
void	setInitialData(double x, double[] y, double h, double len)
void	setOrder(int order)
void	solve(PgPolygon p)
static boolean	solve(PgPolygon p, PnOde anOde, double xStart, double[] yStart, double h, double xLength) Ode solver of an initial value problem performing a number of RK steps.

Methods inherited from class jv.object.PsObject

addInspector, addUpdateListener, assureInspector, clearTag, clone, clone, clone, copy, getFather, getInfoPanel, getInspector, getName, getNumObjects, getSymbol, hasInspector, hasTag, hasUpdateListener, instanceOf, instanceOf, newInspector, newInspector, removeInspector, removeInspector, removeUpdateListener, setName, setParent, setSymbol, setTag, toString, update, updatePanels

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PnOde

public PnOde()

Method Detail

init

public void init()

Description copied from class: PsObject

If instance has missing name then assign default name 'Object_NUMBER' where number is the total number of already created instances.

Overrides:

init in class PsObject

setOrder

public void setOrder(int order)

setInitialData

public void setInitialData(double x,
                           double[] y,
                           double h,
                           double len)

solve

public void solve(PgPolygon p)

diffEquation

public void diffEquation(double x,
                         double[] y,
                         double[] dy)

Method should be overwritten y an application with problem dependent ODE.

solve

public static boolean solve(PgPolygon p,
                            PnOde anOde,
                            double xStart,
                            double[] yStart,
                            double h,
                            double xLength)

Ode solver of an initial value problem performing a number of RK steps.

rungeKutta

public static void rungeKutta(PnOde anOde,
                              double x,
                              double[] y,
                              double h,
                              double[] yOut)

4th order Runge-Kutta method.