Package org.opensourcephysics.media.core

Class TVector

java.lang.Object

java.awt.geom.Point2D

java.awt.geom.Point2D.Double

org.opensourcephysics.media.core.TPoint

org.opensourcephysics.media.core.TShape

org.opensourcephysics.media.core.TVector

All Implemented Interfaces:

Serializable, Cloneable, Drawable, Interactive, Measurable, Trackable

public class TVector
extends TShape

This is a TShape that draws a vector.

Version:

1.0

Author:

Douglas Brown

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.Point2D

Point2D.Double, Point2D.Float

Field Summary

Fields

Modifier and Type	Field	Description
protected Shape	head
protected int	length
protected Line2D	line
protected GeneralPath	path
protected AffineTransform	rotation
protected Shape	shaft
protected TPoint	tail
protected TPoint	tip
protected boolean	tipEnabled
protected Rectangle	tipRect
protected int	width

Fields inherited from class org.opensourcephysics.media.core.TShape

color, fillShape, hitRect, stroke, visible

Fields inherited from class org.opensourcephysics.media.core.TPoint

attachedTo, coordsEditTrigger, coordsVisibleInMouseBox, enabled, isAdjusting, prevX, prevY, screenPt, stepEditTrigger, support, toScreen, trackEditTrigger, worldPt, xyStringBuilder

Fields inherited from class java.awt.geom.Point2D.Double

x, y

Fields inherited from interface org.opensourcephysics.media.core.Trackable

PROPERTY_ADJUSTING

Constructor Summary

Constructors

Constructor	Description
TVector()	Constructs a default TVector with tail position (0, 0) and components (0, 0).
TVector(double xt, double yt, double xc, double yc)	Constructs a TVector with specified tail and components.

Method Summary

Modifier and Type	Method	Description
Interactive	findInteractive(DrawingPanel panel, int xpix, int ypix)	Returns the interactive drawable object at the specified pixel position.
protected Shape	getShape(VideoPanel vidPanel)	Gets the shape to be filled in the draw method.
TPoint	getTail()	Gets the tail.
TPoint	getTip()	Gets the tip.
double	getXComponent()	Gets the x component.
double	getYComponent()	Gets the y component.
boolean	isTipEnabled()	Gets whether the tip is enabled.
void	setStroke(BasicStroke stroke)	Overrides TPoint setStroke method.
void	setTipEnabled(boolean enabled)	Enables and disables the interactivity of the tip.
void	setTipLength(int tipLength)	Sets the length of the arrow tip.
void	setXComponent(double x)	Sets the x component.
void	setXY(double x, double y)	Overrides TPoint setXY method to move both tip and tail.
void	setXYComponents(double x, double y)	Sets the x and y components.
void	setYComponent(double y)	Sets the y component.

Methods inherited from class org.opensourcephysics.media.core.TShape

draw, getBounds, getColor, getStroke, isVisible, setColor, setHitRectCenter, setVisible, toString

Methods inherited from class org.opensourcephysics.media.core.TPoint

addPropertyChangeListener, addPropertyChangeListener, angle, angle, attachTo, center, cos, cos, detach, equals, getFrameNumber, getScreenPosition, getWorldPosition, getXMax, getXMin, getYMax, getYMin, isAdjusting, isAttached, isCoordsEditTrigger, isEnabled, isMeasured, isStepEditTrigger, isTrackEditTrigger, removePropertyChangeListener, removePropertyChangeListener, setAdjusting, setCoordsEditTrigger, setEnabled, setLocation, setPositionOnLine, setScreenPosition, setScreenPosition, setStepEditTrigger, setTrackEditTrigger, setWorldPosition, setX, setY, showCoordinates, sin, sin, translate

Methods inherited from class java.awt.geom.Point2D.Double

getX, getY

Methods inherited from class java.awt.geom.Point2D

clone, distance, distance, distance, distanceSq, distanceSq, distanceSq, hashCode, setLocation

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.opensourcephysics.display.Interactive

getX, getY, isInteractive

Field Details

path

protected GeneralPath path

line

protected Line2D line

head

protected Shape head

shaft

protected Shape shaft

length

protected int length

width

protected int width

rotation

protected AffineTransform rotation

tail

protected TPoint tail

tip

protected TPoint tip

tipRect

protected Rectangle tipRect

tipEnabled

protected boolean tipEnabled

Constructor Details

TVector

public TVector()

Constructs a default TVector with tail position (0, 0) and components (0, 0).

TVector

public TVector(double xt,
 double yt,
 double xc,
 double yc)

Constructs a TVector with specified tail and components.

Parameters:

xt - x position of tail

yt - y position of tail

xc - x component

yc - y component

Method Details

getTip

public TPoint getTip()

Gets the tip.

Returns:

the tip

getTail

public TPoint getTail()

Gets the tail.

Returns:

the tail

setXComponent

public void setXComponent(double x)

Sets the x component.

Parameters:

x - the x component

setYComponent

public void setYComponent(double y)

Sets the y component.

Parameters:

y - the y component

setXYComponents

public void setXYComponents(double x,
 double y)

Sets the x and y components.

Parameters:

x - the x component

y - the y component

getXComponent

public double getXComponent()

Gets the x component.

Returns:

the x component

getYComponent

public double getYComponent()

Gets the y component.

Returns:

the y component

setXY

public void setXY(double x,
 double y)

Overrides TPoint setXY method to move both tip and tail.

Specified by:

setXY in interface Interactive

Overrides:

setXY in class TPoint

Parameters:

x - the x position

y - the y position

setTipEnabled

public void setTipEnabled(boolean enabled)

Enables and disables the interactivity of the tip.

Parameters:

enabled - true to enable the tip

isTipEnabled

public boolean isTipEnabled()

Gets whether the tip is enabled.

Returns:

true if the tip is enabled

setTipLength

public void setTipLength(int tipLength)

Sets the length of the arrow tip.

Parameters:

tipLength - the tip length in pixels

setStroke

public void setStroke(BasicStroke stroke)

Overrides TPoint setStroke method.

Overrides:

setStroke in class TShape

Parameters:

stroke - the desired stroke

findInteractive

public Interactive findInteractive(DrawingPanel panel,
 int xpix,
 int ypix)

Returns the interactive drawable object at the specified pixel position.

Specified by:

findInteractive in interface Interactive

Overrides:

findInteractive in class TShape

Parameters:

panel - the drawing panel

xpix - the x pixel position on the panel

ypix - the y pixel position on the panel

Returns:

the interactive drawable object

getShape

protected Shape getShape(VideoPanel vidPanel)

Gets the shape to be filled in the draw method.

Overrides:

getShape in class TShape

Parameters:

vidPanel - the video panel

Returns:

the line shape