objects
Class EuInterval

java.lang.Object
  |
  +--objects.EuObject
        |
        +--objects.EuParametrized
              |
              +--objects.EuLine
                    |
                    +--objects.EuInterval

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

plotInterval

public class EuInterval

extends EuLine

An instance of this class represents an interval, represented as a line using EuLine, along with two endpoints.

Field Summary

protected boolean	degenerate Describe variable degenerate here.
fundamentals.EuReal	inParameter The incoming parameter for the interval.
fundamentals.EuReal	outParameter The outgoing parameter for the interval.

Fields inherited from class objects.EuLine

generator

Fields inherited from class objects.EuParametrized

anchor

Fields inherited from class objects.EuObject

infoHash, provenience, scaledown

Constructor Summary

EuInterval()
Contructor for dummy object

EuInterval(double x, double y, double deltax, double deltay, double s, double t)
The constructor does initialization.

EuInterval(objects.EuPoint p1, objects.EuPoint p2)
The interval is instantiated with endpoints at the two given points

Method Summary

fundamentals.EuVector	atInEnd() Describe atInEnd method here.
fundamentals.EuVector	atOutEnd() Describe atOutEnd method here.
boolean	castIdentical(objects.EuObject other) See if passed object can be cast to the present one.
double	closestParameter(double x, double y) Find the parameter value which yields the closest point to a given one.
objects.plotCollection	computeClip(fundamentals.mouseInfo info) Compute the visible portion of the object as a collection of arcs, intervals or points.
boolean	interiorContains(fundamentals.EuVector point) See if passed point lies inside the interval..
protected fundamentals.EuVector	invisibleRandomPoint(fundamentals.mouseInfo info, java.util.Random croupier) Chooses a sensible point on the interval when the interval is invisible.
boolean	isFull() Describe isFull method here.
double	nameDisplacementAngle(fundamentals.mouseInfo info) Describe nameDisplacementAngle method here.
double	nameParameter(fundamentals.mouseInfo info) Describe nameParameter method here.
boolean	overlaps(objects.EuObject other) See if objects overlap.
java.lang.String	params() Describe params method here.
void	passArguments(fundamentals.EuArguments args) Describe passArguments method here.
java.lang.String	toNaturalLanguage(int language, boolean determined) Describe toNaturalLanguage method here.
java.lang.String	toString() Describe toString method here.
char	typeName() Describe typeName method here.

Methods inherited from class objects.EuLine

atParameter, cloneMe, closestParameterOnLine, confusionDistance, onSameLine, superIdentical

Methods inherited from class objects.EuParametrized

atParameter, atParameter, closestParameter, closureContains, distance, matchingPair, nameLocation, randomPoint

Methods inherited from class objects.EuObject

cloneObject, draw, equals, getClip, isVisible, mouseVicinity, mouseVicinity, toPs

Methods inherited from class java.lang.Object

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

Field Detail

inParameter

public fundamentals.EuReal inParameter

The incoming parameter for the interval.

outParameter

public fundamentals.EuReal outParameter

The outgoing parameter for the interval.

degenerate

protected boolean degenerate

Describe variable degenerate here.

Constructor Detail

EuInterval

public EuInterval(double x,
                  double y,
                  double deltax,
                  double deltay,
                  double s,
                  double t)
           throws UserException

The constructor does initialization. A zero generator vector gives a LeaRuntimeException. A degenerate interval is handled by the warner.

Parameters:

x - the first coordinate of anchor

y - the second coordinate of anchor

deltax - the first coordinate of generator

deltay - the second coordinate of generator

s - the parameter of one endpoint

t - the parameter of other endpoint

Throws:

UserException - if an error occurs

EuInterval

public EuInterval()

Contructor for dummy object

EuInterval

public EuInterval(objects.EuPoint p1,
                  objects.EuPoint p2)
           throws UserException

The interval is instantiated with endpoints at the two given points

Parameters:

p1 - an EuPoint value

p2 - an EuPoint value

Throws:

UserException - if an error occurs

Method Detail

atInEnd

public fundamentals.EuVector atInEnd()

Describe atInEnd method here.

Returns:

The point at the incoming end of the interval

atOutEnd

public fundamentals.EuVector atOutEnd()

Describe atOutEnd method here.

Returns:

The point at the outgoing end of the interval

computeClip

public objects.plotCollection computeClip(fundamentals.mouseInfo info)
                                   throws UserException

Compute the visible portion of the object as a collection of arcs, intervals or points.

Overrides:

computeClip in class EuLine

Parameters:

info - information used in scaling and positioning the object

Returns:

a plotCollection value

Throws:

UserException - if an error occurs

invisibleRandomPoint

protected fundamentals.EuVector invisibleRandomPoint(fundamentals.mouseInfo info,
                                                     java.util.Random croupier)
                                              throws UserException

Chooses a sensible point on the interval when the interval is invisible.

Overrides:

invisibleRandomPoint in class EuLine

Parameters:

info - a mouseInfo value

croupier - a Random value

Returns:

an EuVector value

Throws:

UserException - if an error occurs

castIdentical

public boolean castIdentical(objects.EuObject other)

See if passed object can be cast to the present one.

Overrides:

castIdentical in class EuLine

Parameters:

other - an EuObject value

Returns:

true if passed object is a EuInterval which is identical to this one @param other the object being compared to the present one

overlaps

public boolean overlaps(objects.EuObject other)

See if objects overlap.

Overrides:

overlaps in class EuLine

Parameters:

other - the object being compared to the present one

Returns:

true if passed object is a EuLine, EuHalf or EuInterval which overlaps with this one

interiorContains

public boolean interiorContains(fundamentals.EuVector point)

See if passed point lies inside the interval..

Overrides:

interiorContains in class EuParametrized

Parameters:

point - an EuVector value

Returns:

true if passed point lies on the interval. @param point the point being compared to the present interval

closestParameter

public double closestParameter(double x,
                               double y)

Find the parameter value which yields the closest point to a given one.

Overrides:

closestParameter in class EuLine

Parameters:

x - The first coordinate of the given point

y - The second coordinate of the given point

Returns:

The parameter

typeName

public char typeName()

Describe typeName method here.

Overrides:

typeName in class EuLine

Returns:

I

isFull

public boolean isFull()

Describe isFull method here.

Overrides:

isFull in class EuLine

Returns:

false since the item is not of subtype A_RADIUS, A_POINT, A_LINE, A_CIRCLE

params

public java.lang.String params()

Describe params method here.

Overrides:

params in class EuLine

Returns:

A technical specification of parameters associated to the object

toString

public java.lang.String toString()

Describe toString method here.

Overrides:

toString in class EuLine

Returns:

A technical specification of the object

passArguments

public void passArguments(fundamentals.EuArguments args)

Describe passArguments method here.

Overrides:

passArguments in class EuLine

Parameters:

args - an EuArguments value

toNaturalLanguage

public java.lang.String toNaturalLanguage(int language,
                                          boolean determined)

Describe toNaturalLanguage method here.

Overrides:

toNaturalLanguage in class EuLine

Parameters:

language - an int value

determined - a boolean value

Returns:

a String value

nameParameter

public double nameParameter(fundamentals.mouseInfo info)

Describe nameParameter method here.

Overrides:

nameParameter in class EuLine

Parameters:

info - a mouseInfo value

Returns:

a double value

nameDisplacementAngle

public double nameDisplacementAngle(fundamentals.mouseInfo info)

Describe nameDisplacementAngle method here.

Overrides:

nameDisplacementAngle in class EuLine

Parameters:

info - a mouseInfo value

Returns:

a double value