vgp.tutor.ode

Class PjExprOde

java.lang.Object

jv.object.PsObject

jv.project.PjProject

vgp.tutor.ode.PjExprOde

All Implemented Interfaces:

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

public class PjExprOde
extends PjProject

Demo project for solving an ODE using class PnOde. Ode expression may be interactively typed or passed as argument from an Html page containing the applet.

See Also:

PnOdeExpr, Serialized Form

Author:

Konrad Polthier

Version:

27.02.03, 1.50 revised (kp) Blackboard added for picking, replacing picking on background.
23.04.01, 1.20 revised (kp) Initial point added to display, Html parameter added.
02.10.99, 1.10 revised (kp) PnExprOde renamed to PnOdeExpr and moved to jvx.numeric.
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
PjExprOde()

Method Summary

Modifier and Type	Method and Description
void	dragInitial(PvPickEvent pos) Drag an arbitrary point along a geometry, point may lie inside an element.
void	init() Initialize and reset project, stops the running animation if any.
boolean	isShowingVectorField()
void	pickInitial(PvPickEvent pos) Pick an arbitrary point on a geometry, point may lie inside an element.
void	setEquation(java.lang.String eq)
void	setEquation(java.lang.String eq, java.lang.String[] parm)
void	setOrder(int order)
void	showInitialPoint(boolean flag)
void	showVectorField(boolean flag)
void	solve()
void	start() Method is invoked during loading of a project in JavaView.
boolean	update(java.lang.Object event) Update the class whenever a child has changed.

Methods inherited from class jv.project.PjProject

addDisplay, addGeometry, addGeometry, dispose, dragDisplay, dragVertex, fitDisplays, getAnimation, getDisplay, getDisplays, getGeometry, getGeometry, getNumGeometries, getParameter, getParameterInfo, getViewer, hasAnimation, hasDisplay, isEnabledAutoFit, markVertices, pickDisplay, pickVertex, removeDisplay, removeGeometries, removeGeometry, selectDisplay, selectGeometry, setAnimation, setBackColor, setBorderType, setDisplay, setEnabledAutoFit, setGeometry, setParameterInfo, setTime, setViewer, stop, unmarkVertices

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, updatePanels

Methods inherited from class java.lang.Object

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

Methods inherited from interface jv.anim.PsTimeListenerIf

getName

Methods inherited from interface jv.project.PvPickListenerIf

getName

Constructor Detail

PjExprOde

public PjExprOde()

Method Detail

init

public void init()

Description copied from class: PjProject

Initialize and reset project, stops the running animation if any. Does not reset any registered display nor geometry. They must be reset individually in each subclass.

Overrides:

init in class PjProject

start

public void start()

Description copied from class: PjProject

Method is invoked during loading of a project in JavaView.

If a project has an animation object, then the animation panel is shown when the project's this start() method is invoked during loading of the project. Use setAnimation(PsAnimation) to register an animation.

If auto fit is enabled then scenery is scaled to fit in each display.

Overrides:

start in class PjProject

See Also:

PvViewerIf.start(), PjProject.isEnabledAutoFit()

showInitialPoint

public void showInitialPoint(boolean flag)

isShowingVectorField

public boolean isShowingVectorField()

showVectorField

public void showVectorField(boolean flag)

setOrder

public void setOrder(int order)

setEquation

public void setEquation(java.lang.String eq)

setEquation

public void setEquation(java.lang.String eq,
                        java.lang.String[] parm)

solve

public void solve()

pickInitial

public void pickInitial(PvPickEvent pos)

Description copied from class: PjProject

Pick an arbitrary point on a geometry, point may lie inside an element. This method does nothing and must be overwritten.

Specified by:

pickInitial in interface PvPickListenerIf

Overrides:

pickInitial in class PjProject

Parameters:

pos - Pick event issued by the display

See Also:

PvPickListenerIf

dragInitial

public void dragInitial(PvPickEvent pos)

Description copied from class: PjProject

Drag an arbitrary point along a geometry, point may lie inside an element. This method invokes pickInitial(PvPickEvent) and should be overwritten.

Specified by:

dragInitial in interface PvPickListenerIf

Overrides:

dragInitial in class PjProject

Parameters:

pos - Pick event issued by the display

See Also:

PvPickListenerIf

update

public boolean update(java.lang.Object event)

Update the class whenever a child has changed. Method is usually invoked from the children.

Specified by:

update in interface PsUpdateIf

Overrides:

update in class PsObject

Parameters:

event - carries a lot of information

Returns:

true if event has been handled, otherwise false

See Also:

PsObject.setParent(PsUpdateIf), PsObject.getFather(), PsObject.addUpdateListener(PsUpdateIf)