vgp.curve.zigzag

Class PjZigZag

java.lang.Object

jv.object.PsObject

jv.project.PjProject

vgp.curve.zigzag.PjZigZag

All Implemented Interfaces:

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

public class PjZigZag
extends PjProject

Computes a Zigzag construction as described by Peter Giblin. P. Giblin, Zigzags, http://www.liv.ac.uk/~pjgiblin/papers/zigzag-final.pdf

See Also:

Serialized Form

Author:

Janis Bode

Version:

05.06.07, 1.10 revised (kp) Adjusted to JavaView style.
19.01.07, 1.00 created (jb)

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
PjZigZag() Sets the required polygon and the panels for the number of lines, Length of the Zag and the angles of the zig and the zag.

Method Summary

Modifier and Type	Method and Description
PdVector[]	computeVertices(PgPolygonSet z_short, double[] vFac, int[] length) Computes the vertices of the ZigZag with the given parameters.
void	computeZigZag() Computes the ZigZag construction depending on the given prameters: angles, lengths and number of lines.
void	init() Initializes the Applet.
PiVector[]	showZags(PgPolygonSet z_short, int delta) Draws the Zags extended to infinity.
PiVector[]	showZigZag(PgPolygonSet z_short) Draws the ZigZag in original size.
void	start() Starts the Applet
boolean	update(java.lang.Object event) Handles the events of the Panel

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, 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

PjZigZag

public PjZigZag()

Sets the required polygon and the panels for the number of lines, Length of the Zag and the angles of the zig and the zag.

Method Detail

init

public void init()

Initializes the Applet. Sets default values and draws the standard zigzag.

Overrides:

init in class PjProject

start

public void start()

Starts the Applet

Overrides:

start in class PjProject

See Also:

PvViewerIf.start(), PjProject.isEnabledAutoFit()

update

public boolean update(java.lang.Object event)

Handles the events of the Panel

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)

computeZigZag

public void computeZigZag()

Computes the ZigZag construction depending on the given prameters: angles, lengths and number of lines. The length of the zig is held constantly at 100.

computeVertices

public PdVector[] computeVertices(PgPolygonSet z_short,
                                  double[] vFac,
                                  int[] length)

Computes the vertices of the ZigZag with the given parameters.

Parameters:

z_short - polygons that define the number of polygons in the zigzag

vFac - vFac[0] = angle of zig, vFac[1] = angle of zag

length - m_length[0] = length of zig, m_length[1] = length of zag

Returns:

the vertices of the zigzag construction

showZags

public PiVector[] showZags(PgPolygonSet z_short,
                           int delta)

Draws the Zags extended to infinity.

Parameters:

z_short - the polygons drawn in this method are baed on the points in this polygonset

delta - the number of zags skipped

Returns:

the polygons of which each contains an extended zag (2 verices). The number of polygons is defined by the number of polygons in z_short.

showZigZag

public PiVector[] showZigZag(PgPolygonSet z_short)

Draws the ZigZag in original size.

Parameters:

z_short - the polygons drawn in this method are baed on the points in this polygonset

Returns:

the polygons of which each contains a zig and a zag (3 vertices). The number of polygons is defined by the number of polygons in z_short.