com.google.common.geometry

Class S2

java.lang.Object

com.google.common.geometry.S2

public final class S2
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	S2.Metric

Field Summary

Fields

Modifier and Type	Field and Description
static int	INVERT_MASK
static double	M_1_PI
static double	M_E
static double	M_PI
static double	M_PI_2
static double	M_PI_4
static double	M_SQRT2
static int	SWAP_MASK

Method Summary

Modifier and Type	Method and Description
static double	angle(S2Point a, S2Point b, S2Point c)
static boolean	approxEquals(double a, double b)
static boolean	approxEquals(double a, double b, double maxError)
static boolean	approxEquals(S2Point a, S2Point b)
static boolean	approxEquals(S2Point a, S2Point b, double maxError)
static double	girardArea(S2Point a, S2Point b, S2Point c)
static int	ijToPos(int orientation, int ijIndex)
static boolean	isUnitLength(S2Point p)
static boolean	orderedCCW(S2Point a, S2Point b, S2Point c, S2Point o)
static S2Point	origin()
static S2Point	ortho(S2Point a)
static int	planarCCW(R2Vector a, R2Vector b)
static S2Point	planarCentroid(S2Point a, S2Point b, S2Point c)
static int	planarOrderedCCW(R2Vector a, R2Vector b, R2Vector c)
static int	posToIJ(int orientation, int position)
static int	posToOrientation(int position)
static int	robustCCW(S2Point a, S2Point b, S2Point c)
static int	robustCCW(S2Point a, S2Point b, S2Point c, S2Point aCrossB)
static S2Point	robustCrossProd(S2Point a, S2Point b)
static double	signedArea(S2Point a, S2Point b, S2Point c)
static boolean	simpleCCW(S2Point a, S2Point b, S2Point c)
static boolean	simpleCrossing(S2Point a, S2Point b, S2Point c, S2Point d)
static S2Point	trueCentroid(S2Point a, S2Point b, S2Point c)
static double	turnAngle(S2Point a, S2Point b, S2Point c)

Methods inherited from class java.lang.Object

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

Field Detail

M_PI

public static final double M_PI

M_1_PI

public static final double M_1_PI

M_PI_2

public static final double M_PI_2

M_PI_4

public static final double M_PI_4

M_SQRT2

public static final double M_SQRT2

M_E

public static final double M_E

SWAP_MASK

public static final int SWAP_MASK

INVERT_MASK

public static final int INVERT_MASK

Method Detail

posToOrientation

public static int posToOrientation(int position)

posToIJ

public static int posToIJ(int orientation,
                          int position)

ijToPos

public static final int ijToPos(int orientation,
                                int ijIndex)

origin

public static S2Point origin()

isUnitLength

public static boolean isUnitLength(S2Point p)

simpleCrossing

public static boolean simpleCrossing(S2Point a,
                                     S2Point b,
                                     S2Point c,
                                     S2Point d)

robustCrossProd

public static S2Point robustCrossProd(S2Point a,
                                      S2Point b)

ortho

public static S2Point ortho(S2Point a)

girardArea

public static double girardArea(S2Point a,
                                S2Point b,
                                S2Point c)

signedArea

public static double signedArea(S2Point a,
                                S2Point b,
                                S2Point c)

planarCentroid

public static S2Point planarCentroid(S2Point a,
                                     S2Point b,
                                     S2Point c)

trueCentroid

public static S2Point trueCentroid(S2Point a,
                                   S2Point b,
                                   S2Point c)

simpleCCW

public static boolean simpleCCW(S2Point a,
                                S2Point b,
                                S2Point c)

robustCCW

public static int robustCCW(S2Point a,
                            S2Point b,
                            S2Point c)

robustCCW

public static int robustCCW(S2Point a,
                            S2Point b,
                            S2Point c,
                            S2Point aCrossB)

planarCCW

public static int planarCCW(R2Vector a,
                            R2Vector b)

planarOrderedCCW

public static int planarOrderedCCW(R2Vector a,
                                   R2Vector b,
                                   R2Vector c)

orderedCCW

public static boolean orderedCCW(S2Point a,
                                 S2Point b,
                                 S2Point c,
                                 S2Point o)

angle

public static double angle(S2Point a,
                           S2Point b,
                           S2Point c)

turnAngle

public static double turnAngle(S2Point a,
                               S2Point b,
                               S2Point c)

approxEquals

public static boolean approxEquals(S2Point a,
                                   S2Point b,
                                   double maxError)

approxEquals

public static boolean approxEquals(S2Point a,
                                   S2Point b)

approxEquals

public static boolean approxEquals(double a,
                                   double b,
                                   double maxError)

approxEquals

public static boolean approxEquals(double a,
                                   double b)