cz.cuni.utils.math.extended
Class Segment3D

java.lang.Object
  cz.cuni.utils.math.extended.Segment3D

public class Segment3D
extends java.lang.Object

Contains hash code + method equals (endpoints of the segment must be the same, ordering doesn't metter), once created - shouldn't be changed.

Field Summary

Vertex3D[]	ab Endpoints of the segment.
Vertex3D[]	abN Normalized order of ab[].
int	hashCode
double	length
Line3DExtended	line Line in which segment lies.

Constructor Summary

Segment3D(Segment3D s)

Segment3D(Vertex3D a, Vertex3D b)

Method Summary

protected int	countHashCode() we have to add the points in the right order to obtain the same hash code ... we will compare their coordinates doesn't work for degenerated segments (a == b), that's why all degenerated segments have hash code == 0
boolean	equals(java.lang.Object o)
boolean	equals(Segment3D s)
Vertex3D	getOtherVertex(Vertex3D previousVertex)
int	hashCode()
boolean	hasVertex(Vertex3D v) Wether v is one of the endpoint of this segment.
boolean	inLine(Line3D iLine) Test wether the segment lines in this line.
double	length()
Vertex3D	sharedVertex(Segment3D s)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

line

public Line3DExtended line

Line in which segment lies.

ab

public Vertex3D[] ab

Endpoints of the segment.

abN

public Vertex3D[] abN

Normalized order of ab[].

length

public double length

hashCode

public final int hashCode

Constructor Detail

Segment3D

public Segment3D(Vertex3D a,
                 Vertex3D b)

Segment3D

public Segment3D(Segment3D s)

Method Detail

countHashCode

protected int countHashCode()

we have to add the points in the right order to obtain the same hash code ... we will compare their coordinates doesn't work for degenerated segments (a == b), that's why all degenerated segments have hash code == 0

Returns:

hash code

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

equals

public boolean equals(Segment3D s)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

length

public double length()

hasVertex

public boolean hasVertex(Vertex3D v)

Wether v is one of the endpoint of this segment.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

inLine

public boolean inLine(Line3D iLine)

Test wether the segment lines in this line.

Parameters:

iLine -

getOtherVertex

public Vertex3D getOtherVertex(Vertex3D previousVertex)

sharedVertex

public Vertex3D sharedVertex(Segment3D s)