Class Anchor

java.lang.Object
  |
  +--Symbol
        |
        +--PointSym
              |
              +--Anchor

All Implemented Interfaces:

Aligner, AlignmentListener, DragableSymbol, Element, java.io.Serializable

public class Anchor

extends PointSym

implements DragableSymbol

A control point on a Curve. Consists of a point and two tangent directions determined by guide points.

See Also:

Serialized Form

Field Summary

(package private) static int	ALL Indicates that the anchor as a whole is selected.
Arrow	arrow The arrow head to draw at this point.
(package private) javax.swing.JComboBox	arrowfield
boolean	arrowreverse Reverse the direction of the arrow?.
(package private) static int	CONSISTANT Indicates guide and guidelocal are valid and consistant
(package private) static int	GLOBAL Indicates guide is valid but not guidelocal
java.awt.geom.Point2D[]	guide The two guide points.
(package private) static int	GUIDE0 Indictes that the first guide point is selected.
(package private) static int	GUIDE1 Indictes that the second guide point is selected.
java.awt.geom.Point2D[]	guidelocal The two guide points in local coords.
(package private) int	guidestate Indicates which form of the guide point is official.
(package private) boolean	kink If true, curve has a kink at this point.
(package private) static int	LOCAL Indicates guidelocal is valid but not guide
(package private) javax.swing.JCheckBox	reversebox
(package private) int	selmode The selection state of this anchor.
private static long	serialVersionUID
(package private) static int	SMOOTH Indicates smooth mode.

Fields inherited from class PointSym

dragpoint, position, trans, valid

Fields inherited from class Symbol

makenames, name, namefield

Fields inherited from interface Aligner

absolute, datum, floating

Constructor Summary

Anchor(java.awt.geom.Point2D where, View view, java.lang.Object arg)
Creates a new anchor at the specified location.

Method Summary

void	abandonPropertyEdit()
void	acceptPropertyEdit()
void	alignmentChanged() Take notice of change in position, caused by alignment.
(package private) java.awt.Container	anchorPropertyEdit()
void	drag(int command, java.awt.geom.Point2D where, View view) Drag the Anchor.
void	endDrag(int comand, java.awt.geom.Point2D pos, View view) Ends drag.
int	getLevel()
void	getPropertyEdit(java.lang.Object[] edits, int slot, java.util.Set sub, Symbol parent)
void	guideUpdate() sets the local and global coords to match.
void	paint(View view) Paint the Anchor.
private void	readObject(java.io.ObjectInputStream stream) Read the anchor and re-constitute its transient variables.
boolean	selectProbe(java.awt.geom.Point2D where, View view) Determines if a mouse press selects this anchor.
void	showSelected(View view) Draw the drag box of the Anchor as selected.
void	startDrag(int command, java.awt.geom.Point2D where, View view) Start dragging this Anchor.
private void	writeObject(java.io.ObjectOutputStream stream) Writes the anchor and the positions of its guide points.

Methods inherited from class PointSym

defaultPosition, getAlignTransform, getBounds, pointPropertyEdit, showAlignee, showAligner

Methods inherited from class Symbol

checkName, editProperties, getName, getNew, importSym, prepareForSurveyUpdate, recursiveDelete, setName, stripSurveys, toString, useSurveyUpdate, valid

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

SMOOTH

static int SMOOTH

Indicates smooth mode. Where the guide points are slaved to each other so that the curve stays smooth

ALL

static int ALL

Indicates that the anchor as a whole is selected. As when the central point is clicked

GUIDE0

static int GUIDE0

Indictes that the first guide point is selected.

GUIDE1

static int GUIDE1

Indictes that the second guide point is selected.

GLOBAL

static int GLOBAL

Indicates guide is valid but not guidelocal

LOCAL

static int LOCAL

Indicates guidelocal is valid but not guide

CONSISTANT

static int CONSISTANT

Indicates guide and guidelocal are valid and consistant

guide

public transient java.awt.geom.Point2D[] guide

The two guide points. must be transient because Point2D is not Serializable

guidelocal

public transient java.awt.geom.Point2D[] guidelocal

The two guide points in local coords. must be transient because Point2D is not Serializable Except for storage in a file, guide is derived from guidelocal

guidestate

transient int guidestate

Indicates which form of the guide point is official. Posible values are LOCAL, GLOBAL, or CONSISTANT. Before using guide points use guideUpdate() to make it CONSISTANT.

kink

boolean kink

If true, curve has a kink at this point.

arrow

public Arrow arrow

The arrow head to draw at this point.

arrowreverse

public boolean arrowreverse

Reverse the direction of the arrow?.

selmode

int selmode

The selection state of this anchor. Possible values are SMOOTH, ALL, GUIDE0, and GUIDE1.

arrowfield

transient javax.swing.JComboBox arrowfield

reversebox

transient javax.swing.JCheckBox reversebox

Constructor Detail

Anchor

public Anchor(java.awt.geom.Point2D where,
              View view,
              java.lang.Object arg)

Creates a new anchor at the specified location. The new anchor will be in SMOOTH mode, and its guide points will be at its central point (the place that was clicked)

Method Detail

readObject

private void readObject(java.io.ObjectInputStream stream)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

Read the anchor and re-constitute its transient variables. That is, its goude points.

java.io.IOException

java.lang.ClassNotFoundException

writeObject

private void writeObject(java.io.ObjectOutputStream stream)
                  throws java.io.IOException

Writes the anchor and the positions of its guide points.

java.io.IOException

alignmentChanged

public void alignmentChanged()

Take notice of change in position,
caused by alignment.

Specified by:

alignmentChanged in interface AlignmentListener

Overrides:

alignmentChanged in class PointSym

guideUpdate

public void guideUpdate()

sets the local and global coords to match. Which is taken as primary depends on guidestate

getLevel

public int getLevel()

Overrides:

getLevel in class PointSym

getPropertyEdit

public void getPropertyEdit(java.lang.Object[] edits,
                            int slot,
                            java.util.Set sub,
                            Symbol parent)

Overrides:

getPropertyEdit in class PointSym

anchorPropertyEdit

java.awt.Container anchorPropertyEdit()

acceptPropertyEdit

public void acceptPropertyEdit()

Overrides:

acceptPropertyEdit in class PointSym

abandonPropertyEdit

public void abandonPropertyEdit()

Overrides:

abandonPropertyEdit in class PointSym

selectProbe

public boolean selectProbe(java.awt.geom.Point2D where,
                           View view)

Determines if a mouse press selects this anchor. If so remembers which part of the anchor was pressed (by setting selmode), so that the same part can be dragged if needed

Overrides:

selectProbe in class PointSym

startDrag

public void startDrag(int command,
                      java.awt.geom.Point2D where,
                      View view)

Start dragging this Anchor.

Specified by:

startDrag in interface DragableSymbol

Overrides:

startDrag in class PointSym

drag

public void drag(int command,
                 java.awt.geom.Point2D where,
                 View view)

Drag the Anchor. Which part will actually move depends on the valeue of selmode

Specified by:

drag in interface DragableSymbol

Overrides:

drag in class PointSym

endDrag

public void endDrag(int comand,
                    java.awt.geom.Point2D pos,
                    View view)

Ends drag. Alerts alignees that may depend on this point.

Specified by:

endDrag in interface DragableSymbol

Overrides:

endDrag in class Symbol

showSelected

public void showSelected(View view)

Draw the drag box of the Anchor as selected. The box is shown filled with its guide points. Draw the guide point that can be dragged (if any) as a filled circle.

Overrides:

showSelected in class PointSym

paint

public void paint(View view)

Paint the Anchor. The only visible part of an anchor is it's drag box. When not selected anchors are only visible by their effect on the curve

Overrides:

paint in class PointSym