Package com.google.common.geometry

Class S2Point

java.lang.Object

com.google.common.geometry.S2Point

All Implemented Interfaces:

Comparable<S2Point>

public class S2Point
extends Object
implements Comparable<S2Point>

An S2Point represents a point on the unit sphere as a 3D vector. Usually points are normalized to be unit length, but some methods do not require this.

Constructor Summary

Constructors

Constructor	Description
S2Point()
S2Point(double x, double y, double z)

Method Summary

Modifier and Type	Method	Description
static S2Point	add(S2Point p1, S2Point p2)
double	angle(S2Point va)	Return the angle between two vectors in radians
int	compareTo(S2Point other)
static S2Point	crossProd(S2Point p1, S2Point p2)
static S2Point	div(S2Point p, double m)
double	dotProd(S2Point that)
boolean	equals(Object that)
static S2Point	fabs(S2Point p)
double	get(int axis)
int	hashCode()	Calcualates hashcode based on stored coordinates.
int	largestAbsComponent()	Return the index of the largest component fabs
boolean	lessThan(S2Point vb)
static S2Point	minus(S2Point p1, S2Point p2)
static S2Point	mul(S2Point p, double m)
static S2Point	neg(S2Point p)
double	norm()
double	norm2()
static S2Point	normalize(S2Point p)
S2Point	ortho()	return a vector orthogonal to this one
static S2Point	sub(S2Point p1, S2Point p2)
String	toDegreesString()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

S2Point

public S2Point()

S2Point

public S2Point(double x,
               double y,
               double z)

Method Detail

minus

public static S2Point minus(S2Point p1,
                            S2Point p2)

neg

public static S2Point neg(S2Point p)

norm2

public double norm2()

norm

public double norm()

crossProd

public static S2Point crossProd(S2Point p1,
                                S2Point p2)

add

public static S2Point add(S2Point p1,
                          S2Point p2)

sub

public static S2Point sub(S2Point p1,
                          S2Point p2)

dotProd

public double dotProd(S2Point that)

mul

public static S2Point mul(S2Point p,
                          double m)

div

public static S2Point div(S2Point p,
                          double m)

ortho

public S2Point ortho()

return a vector orthogonal to this one

largestAbsComponent

public int largestAbsComponent()

Return the index of the largest component fabs

fabs

public static S2Point fabs(S2Point p)

normalize

public static S2Point normalize(S2Point p)

get

public double get(int axis)

angle

public double angle(S2Point va)

Return the angle between two vectors in radians

equals

public boolean equals(Object that)

Overrides:

equals in class Object

lessThan

public boolean lessThan(S2Point vb)

compareTo

public int compareTo(S2Point other)

Specified by:

compareTo in interface Comparable<S2Point>

toString

public String toString()

Overrides:

toString in class Object

toDegreesString

public String toDegreesString()

hashCode

public int hashCode()

Calcualates hashcode based on stored coordinates. Since we want +0.0 and -0.0 to be treated the same, we ignore the sign of the coordinates.

Overrides:

hashCode in class Object