jvx.geom
Class PwRefinePolygon

java.lang.Object
  jv.object.PsObject
      jvx.project.PjWorkshop
          jvx.geom.PwRefinePolygon

All Implemented Interfaces:

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

public class PwRefinePolygon

extends PjWorkshop

Class to refine or coarsen a PgPolygon

See Also:

Serialized Form

Field Summary

static int	COARSEN_CHAIKIN
static int	COARSEN_DLG
static int	REFINE_CHAIKIN
static int	REFINE_DLG

Fields inherited from class jv.object.PsObject

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

PwRefinePolygon()
Constructor

Method Summary

void	addSequenceEntry(int entry) Store a new refinement step to the refinement sequence.
void	close() Remove the control polygon from the display and destroy this workshop.
static void	coarsenChaikin(PgPolygon poly) Coarsen a PgPolygon global by a reversed Chaikin algorithm.
static void	coarsenChaikin(PgPolygonSet polySet) Coarsen a PgPolygonSet global by a reversed Chaikin algorithm.
static void	coarsenDLG(PgPolygon poly) Coarsen a PgPolygon by removing every second vertex.
static void	coarsenDLG(PgPolygonSet polySet) Coarsen a PgPolygonSet by removing every second vertex.
boolean	isShowingControlGrid() Checks if control grid of polygon is visible.
static void	refineChaikin(PgPolygon poly) Refine a PgPolygon global by Chaikin's algorithm.
static void	refineChaikin(PgPolygonSet polySet) Refine a PgPolygonSet global by Chaikin's algorithm.
static void	refineDLG(PgPolygon poly) Refine a PgPolygon global by DLG scheme.
static void	refineDLG(PgPolygonSet polySet) Refine a PgPolygonSet global by DLG scheme.
void	reset() Remove all previously done refining and and coarsening and set the workshop to its initial status.
void	sequenceRefine() Recompute all refinement steps.
void	setGeometry(PgPolygon geom) Assign a geometry on which this workshop operates, and create two backup copies: One for canceling and one to be used as control polygon for the refined geometry.
void	setGeometry(PgPolygonSet geom) Assign a geometry on which this workshop operates, and create two backup copies: One for canceling and one to be used as control polygonSet for the refined geometry.
void	showControlGrid(boolean bShow) Set the control polygon visible or invisible in the display.
boolean	update(java.lang.Object event) Update the class whenever a child has changed.

Methods inherited from class jvx.project.PjWorkshop

cancel, getDisplay, getDisplays, getGeometry, getSavedGeometry, getViewer, init, isModal, ok, removeGeometry, setDisplay, setDisplays, setGeometry, setModal, setViewer

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.object.PsUpdateIf

getFather, getName, setParent

Field Detail

REFINE_DLG

public static final int REFINE_DLG

See Also:

Constant Field Values

COARSEN_DLG

public static final int COARSEN_DLG

See Also:

Constant Field Values

REFINE_CHAIKIN

public static final int REFINE_CHAIKIN

See Also:

Constant Field Values

COARSEN_CHAIKIN

public static final int COARSEN_CHAIKIN

See Also:

Constant Field Values

Constructor Detail

PwRefinePolygon

public PwRefinePolygon()

Constructor

Method Detail

setGeometry

public void setGeometry(PgPolygon geom)

Assign a geometry on which this workshop operates, and create two backup copies: One for canceling and one to be used as control polygon for the refined geometry.

setGeometry

public void setGeometry(PgPolygonSet geom)

Assign a geometry on which this workshop operates, and create two backup copies: One for canceling and one to be used as control polygonSet for the refined geometry.

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 PjWorkshop

Parameters:

event - sender of this update.

Returns:

true if update was correctly handled by superclass.

reset

public void reset()

Remove all previously done refining and and coarsening and set the workshop to its initial status.

Overrides:

reset in class PjWorkshop

isShowingControlGrid

public boolean isShowingControlGrid()

Checks if control grid of polygon is visible. By default, control grid is not visible.

showControlGrid

public void showControlGrid(boolean bShow)

Set the control polygon visible or invisible in the display.

close

public void close()

Remove the control polygon from the display and destroy this workshop.

Overrides:

close in class PjWorkshop

addSequenceEntry

public void addSequenceEntry(int entry)

Store a new refinement step to the refinement sequence.

sequenceRefine

public void sequenceRefine()

Recompute all refinement steps.

refineDLG

public static void refineDLG(PgPolygon poly)

Refine a PgPolygon global by DLG scheme. Afterwards the polygon will have twice as much vertices, the vertices v(i) at even indices are the original vertices of the polygon, the vertices at odd indices are blended from the next two vertices in both directions by 1/16(-v(i-1) + 9v(i) + 9v(i+1) - v(i+2)).

coarsenDLG

public static void coarsenDLG(PgPolygon poly)

Coarsen a PgPolygon by removing every second vertex. This is the reverse algorithm for interpolating refinement algorithms.

refineChaikin

public static void refineChaikin(PgPolygon poly)

Refine a PgPolygon global by Chaikin's algorithm. On each edge of the polygon two vertices of the refined polygon will be computed at 1/4 and 3/4 length.

coarsenChaikin

public static void coarsenChaikin(PgPolygon poly)

Coarsen a PgPolygon global by a reversed Chaikin algorithm. Each vertex of the coarsened polygon gets blended from two of the extrapolated ancestor vertices of the edges v(i-2) to v(i-1) and v(i) to v(i+1).

refineDLG

public static void refineDLG(PgPolygonSet polySet)

Refine a PgPolygonSet global by DLG scheme. Afterwards the polygon will have twice as much vertices, the vertices v(i) at even indices are the original vertices of the polygon, the vertices at odd indices are blended from the next two vertices in both directions by 1/16(-v(i-1) + 9v(i) + 9v(i+1) - v(i+2)).

coarsenDLG

public static void coarsenDLG(PgPolygonSet polySet)

Coarsen a PgPolygonSet by removing every second vertex. This is the reverse algorithm for interpolating refinement algorithms.

refineChaikin

public static void refineChaikin(PgPolygonSet polySet)

Refine a PgPolygonSet global by Chaikin's algorithm. On each edge of the polygon two vertices of the refined polygon will be computed at 1/4 and 3/4 length.

coarsenChaikin

public static void coarsenChaikin(PgPolygonSet polySet)

Coarsen a PgPolygonSet global by a reversed Chaikin algorithm. Each vertex of the coarsened polygon gets blended from two of the extrapolated ancestor vertices of the edges v(i-2) to v(i-1) and v(i) to v(i+1).