vgp.tutor.firstProject

Class MyProject

java.lang.Object

jv.object.PsObject

jv.project.PjProject

vgp.tutor.firstProject.MyProject

All Implemented Interfaces:

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

public class MyProject
extends PjProject

Demo project for working with JavaView projects and for subclassing of PgElementSet. This sample project shows how to handle timer events and supplies an own computation method for creating the coordinates of an (animated) surface.

In this project a classes is embedded in a JavaView project. Nearly all applications in JavaView are embedded into projects, each with a special functionality. Such projects can be reused as a building blocks in other circumstances, similar to a class. In fact, a project is a subclass of jv.project.PjProject which allows to manage a set of geometries, a display(s), and other projects, and to react on animation and pick events.

This project also shows how to work with animations. Here an instance of class PsAnimation is created where the current project registers itself as dynamic object to be able to receive time events. Whenever the time changes the animation manager invokes the method setTime(PsTimeEvent) of this project.

See Also:

PsAnimation, PgElementSet, PjProject, Serialized Form

Author:

Konrad Polthier

Version:

25.02.01, 1.51 revised (kp) Obsolete call to method setAnimation() removed.
28.11.00, 1.50 revised (kp) Applet simplified for beginners.
05.08.99, 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
MyProject() Constructor, without arguments to allow loading of project from menu.

Method Summary

Modifier and Type	Method and Description
void	init() Do initialization of data structures; method is also used to reset instances.
boolean	setTime(PsTimeEvent timeEvent) Method is called from animation(-panel) whenever time has changed since this project is registered as dynamic object in the animation.
void	start() Start project, e.g. start an animation.
boolean	update(java.lang.Object event) Update method of project to react on changes in its panel or of its children.

Methods inherited from class jv.project.PjProject

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

MyProject

public MyProject()

Constructor, without arguments to allow loading of project from menu.

Method Detail

init

public void init()

Do initialization of data structures; method is also used to reset instances.

Overrides:

init in class PjProject

start

public void start()

Start project, e.g. start an animation. Method is called once when project is selected in PvViewer#selectProject(). Method is optional. For example, if an applet calls the start() method of PvViewer, then PvViewer tries to invoke the start() method of the currently selected project.

Overrides:

start in class PjProject

See Also:

PvViewerIf.start(), PjProject.isEnabledAutoFit()

setTime

public boolean setTime(PsTimeEvent timeEvent)

Method is called from animation(-panel) whenever time has changed since this project is registered as dynamic object in the animation. Method is optional, but allows a project to update geometry to new current time.

Specified by:

setTime in interface PsTimeListenerIf

Overrides:

setTime in class PjProject

update

public boolean update(java.lang.Object event)

Update method of project to react on changes in its panel or of its children. This method is optional, but required if project is parent of a child. Project becomes parent if child calls child.setParent(this) with this project as argument. For example, see the constructor of MyProject. Project must react on child events, or forward them to its superclass.

Catch events of integer children and recompute surface.

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)