vgp.curve.subdivision

Class PjSubdivisionCurve

java.lang.Object

jv.object.PsObject

jv.project.PjProject

vgp.curve.subdivision.PjSubdivisionCurve

All Implemented Interfaces:

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

public class PjSubdivisionCurve
extends PjProject

Demonstrates ideas for a subdivision algorithm of curves on surfaces.

See Also:

Serialized Form

Author:

Eike Preuß, Konrad Polthier

Version:

15.04.06, 2.00 revised (kp) Full revision including sync with PjProject and new PgPolygonOnElementSet.
13.01.04, 1.00 created (ep)

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
PjSubdivisionCurve()

Method Summary

Modifier and Type	Method and Description
static PgPolygonOnElementSet	computeSubdivisionCurve(PgElementSet geom, PiVector refElem, PdBary[] refBary, int depth, PgPolygonOnElementSet outpoly, boolean reuseTriangleStrips) Chaikin-Type subdivision.
boolean	getReuseTriangleRunsWhileIterating()
void	init() Initialize and reset project, stops the running animation if any.
void	removeGeometry()
boolean	setGeometry(PgGeometryIf geom) Interface method used by subclassed project to initialize the project geometry from outside the project, for example, during initialization or loading of the project.
void	setReuseTriangleRunsWhileIterating(boolean flag)
void	start() Method is invoked during loading of a project in JavaView.
boolean	update(java.lang.Object event) Update all inspector panels, send update to all registered update listeners and finally update parent.

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, 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

PjSubdivisionCurve

public PjSubdivisionCurve()

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()

update

public boolean update(java.lang.Object event)

Description copied from class: PsObject

Update all inspector panels, send update to all registered update listeners and finally update parent. Each of those updates has this object as event independent of the argument of this method.

Central update method of this object. Must be overwritten if this class receives unknown events, say, from new children. Any subclass must class invoke super.update(event) on all events it does handle itself.

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)

removeGeometry

public void removeGeometry()

setGeometry

public boolean setGeometry(PgGeometryIf geom)

Description copied from class: PjProject

Interface method used by subclassed project to initialize the project geometry from outside the project, for example, during initialization or loading of the project.

This method of PjProject does nothing and must be overwritten in order to be useful. Not all projects support this method.

Overrides:

setGeometry in class PjProject

Parameters:

geom - needs to be triangulated

getReuseTriangleRunsWhileIterating

public boolean getReuseTriangleRunsWhileIterating()

setReuseTriangleRunsWhileIterating

public void setReuseTriangleRunsWhileIterating(boolean flag)

computeSubdivisionCurve

public static PgPolygonOnElementSet computeSubdivisionCurve(PgElementSet geom,
                                                            PiVector refElem,
                                                            PdBary[] refBary,
                                                            int depth,
                                                            PgPolygonOnElementSet outpoly,
                                                            boolean reuseTriangleStrips)

Chaikin-Type subdivision.

Parameters:

geom - underlying triangulation, 2d surface in 3d

refElem - vector of element indices for control points

refBary - vector of barycentric coordinates for control points

depth - num of subdivision steps

outpoly - result, computed subdivision curve, may be null

reuseTriangleStrips - use element strips from previous step for current step; should be true in normal case, false only for demonstration purpose

Returns:

subdivision curve