cz.cuni.utils.math.extended
Class Triangle2D

java.lang.Object
  cz.cuni.utils.math.extended.Triangle2D

public class Triangle2D
extends java.lang.Object

Field Summary

int	hashCode
double[]	max contains maximums from vertices x, y ... indexed 0 == X, 1 == Y
double[]	min contains minimums from vertices x, y ... indexed 0 == X, 1 == Y
Vertex2D[]	vertices List of triangles vertices.
protected java.util.HashMap	verticesHM We will store vertices also in hashset allowing method equals() to be as fast as possible.

Constructor Summary

Triangle2D(Segment2D s1, Segment2D s2, Segment2D s3)

Triangle2D(Vertex2D v1, Vertex2D v2, Vertex2D v3)

Method Summary

protected int	countHashCode() If triangle is a one point ... hash code == 0 If exactly two vertices are the same ... hash code == 1 Otherwise we need to sort it according to verties' coordinates.
boolean	equals(java.lang.Object o)
Tuple2D	getOrthocenter()
Vertex2D	getVertex2D(int index)
int	hashCode()
boolean	hasVertex(Vertex2D v)
protected void	checkMinMax(Vertex2D v)
protected void	init()
protected void	initVertices(Vertex2D v1, Vertex2D v2, Vertex2D v3)
protected void	initVerticesFromEdges(Segment2D s1, Segment2D s2, Segment2D s3)
protected void	recountMinMax() Recount min / max properties.
protected void	setVertex(int index, Vertex2D vertex)
protected void	setVertexAndHS(int index, Vertex2D vertex)
boolean	swapVertex(Vertex2D toBeSwapped, Vertex2D newVertex)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

vertices

public Vertex2D[] vertices

List of triangles vertices.

verticesHM

protected java.util.HashMap verticesHM

We will store vertices also in hashset allowing method equals() to be as fast as possible.

min

public double[] min

contains minimums from vertices x, y ... indexed 0 == X, 1 == Y

max

public double[] max

contains maximums from vertices x, y ... indexed 0 == X, 1 == Y

hashCode

public final int hashCode

Constructor Detail

Triangle2D

public Triangle2D(Vertex2D v1,
                  Vertex2D v2,
                  Vertex2D v3)

Triangle2D

public Triangle2D(Segment2D s1,
                  Segment2D s2,
                  Segment2D s3)

Method Detail

init

protected void init()

initVertices

protected void initVertices(Vertex2D v1,
                            Vertex2D v2,
                            Vertex2D v3)

initVerticesFromEdges

protected void initVerticesFromEdges(Segment2D s1,
                                     Segment2D s2,
                                     Segment2D s3)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

countHashCode

protected int countHashCode()

If triangle is a one point ... hash code == 0 If exactly two vertices are the same ... hash code == 1 Otherwise we need to sort it according to verties' coordinates.

Returns:

hashCode

setVertexAndHS

protected void setVertexAndHS(int index,
                              Vertex2D vertex)

setVertex

protected void setVertex(int index,
                         Vertex2D vertex)

getVertex2D

public Vertex2D getVertex2D(int index)

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

checkMinMax

protected void checkMinMax(Vertex2D v)

recountMinMax

protected void recountMinMax()

Recount min / max properties. Set min/max to Double.max/min values a do the check.

hasVertex

public boolean hasVertex(Vertex2D v)

swapVertex

public boolean swapVertex(Vertex2D toBeSwapped,
                          Vertex2D newVertex)

getOrthocenter

public Tuple2D getOrthocenter()