ProjectionMath (Proj4J 1.0.1 API)

java.lang.Object
- org.locationtech.proj4j.util.ProjectionMath

public class ProjectionMath
extends Object

字段概要

字段
限定符和类型	字段	说明
`static double`	`DTR`
`static double`	`EPS10`
`static double`	`FORTPI`
`static double`	`HALFPI`
`static double`	`MILLION`
`static double`	`PI`
`static double`	`QUARTERPI`
`static double`	`RTD`
`static double`	`SECONDS_TO_RAD`
`static double`	`TWOPI`

构造器概要

构造器
构造器说明

ProjectionMath()

构造器
构造器	说明
`ProjectionMath()`

方法概要

所有方法静态方法具体方法
限定符和类型	方法	说明
`static double`	`acos(double v)`
`static double`	`acosd(double v)`
`static double`	`asin(double v)`
`static double`	`asind(double v)`
`static double`	`atan2(double y, double x)`
`static double`	`atan2d(double y, double x)`
`static double`	`atand(double v)`
`static double`	`authlat(double beta, double[] APA)`
`static double[]`	`authset(double es)`
`static double`	`cosd(double v)`
`static double`	`cross(double x1, double y1, double x2, double y2)`
`static double`	`degToRad(double v)`
`static double`	`distance(double dx, double dy)`
`static double`	`dmsToDeg(double d, double m, double s)`
`static double`	`dmsToRad(double d, double m, double s)`
`static double[]`	`enfn(double es)`
`static double`	`frac(double v)`
`static double`	`geocentricLatitude(double lat, double flatness)`
`static double`	`geographicLatitude(double lat, double flatness)`
`static double`	`greatCircleDistance(double lon1, double lat1, double lon2, double lat2)`
`static double`	`hypot(double x, double y)`
`static double`	`inv_mlfn(double arg, double es, double[] en)`
`static boolean`	`isIdentity(double[] transform)`	Tests whether the datum parameter-based transform is the identity transform (in which case datum transformation can be short-circuited, thus avoiding some loss of numerical precision).
`static double`	`longitudeDistance(double l1, double l2)`
`static double`	`mlfn(double phi, double sphi, double cphi, double[] en)`
`static double`	`msfn(double sinphi, double cosphi, double es)`
`static double`	`niceNumber(double x, boolean round)`
`static double`	`normalizeAngle(double angle)`
`static double`	`normalizeLatitude(double angle)`
`static double`	`normalizeLongitude(double angle)`
`static double`	`phi2(double ts, double e)`
`static double`	`qsfn(double sinphi, double e, double one_es)`
`static double`	`radToDeg(double v)`
`static boolean`	`sameSigns(double a, double b)`
`static boolean`	`sameSigns(int a, int b)`
`static double`	`sind(double v)`	Degree versions of trigonometric functions
`static double`	`sphericalAzimuth(double lat0, double lon0, double lat, double lon)`
`static double`	`sqrt(double v)`
`static double`	`takeSign(double a, double b)`
`static int`	`takeSign(int a, int b)`
`static double`	`tand(double v)`
`static double`	`trunc(double v)`
`static double`	`tsfn(double phi, double sinphi, double e)`
`static Complex`	`zpoly1(Complex z, Complex[] c)`	Evaluate complex polynomial.
`static Complex`	`zpoly1d(Complex z, Complex[] C, Complex der)`	Evaluate a complex polynomial and its derivative

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料
- PI
```
public static final double PI
```
  另请参阅:
  
  常量字段值
- HALFPI
```
public static final double HALFPI
```
  另请参阅:
  
  常量字段值
- QUARTERPI
```
public static final double QUARTERPI
```
  另请参阅:
  
  常量字段值
- FORTPI
```
public static final double FORTPI
```
  另请参阅:
  
  常量字段值
- TWOPI
```
public static final double TWOPI
```
  另请参阅:
  
  常量字段值
- RTD
```
public static final double RTD
```
  另请参阅:
  
  常量字段值
- DTR
```
public static final double DTR
```
  另请参阅:
  
  常量字段值
- EPS10
```
public static final double EPS10
```
  另请参阅:
  
  常量字段值
- SECONDS_TO_RAD
```
public static final double SECONDS_TO_RAD
```
  另请参阅:
  
  常量字段值
- MILLION
```
public static final double MILLION
```
  另请参阅:
  
  常量字段值

构造器详细资料
- ProjectionMath
```
public ProjectionMath()
```

方法详细资料

sind
```
public static double sind(double v)
```
Degree versions of trigonometric functions

cosd

public static double cosd(double v)

tand

public static double tand(double v)

asind

public static double asind(double v)

acosd

public static double acosd(double v)

atand

public static double atand(double v)

atan2d

public static double atan2d(double y,
                            double x)

asin

public static double asin(double v)

acos

public static double acos(double v)

sqrt

public static double sqrt(double v)

distance

public static double distance(double dx,
                              double dy)

hypot

public static double hypot(double x,
                           double y)

atan2

public static double atan2(double y,
                           double x)

trunc

public static double trunc(double v)

frac

public static double frac(double v)

degToRad

public static double degToRad(double v)

radToDeg

public static double radToDeg(double v)

dmsToRad

public static double dmsToRad(double d,
                              double m,
                              double s)

dmsToDeg

public static double dmsToDeg(double d,
                              double m,
                              double s)

normalizeLatitude

public static double normalizeLatitude(double angle)

normalizeLongitude

public static double normalizeLongitude(double angle)

normalizeAngle

public static double normalizeAngle(double angle)

greatCircleDistance

public static double greatCircleDistance(double lon1,
                                         double lat1,
                                         double lon2,
                                         double lat2)

sphericalAzimuth

public static double sphericalAzimuth(double lat0,
                                      double lon0,
                                      double lat,
                                      double lon)

sameSigns

public static boolean sameSigns(double a,
                                double b)

sameSigns

public static boolean sameSigns(int a,
                                int b)

takeSign

public static double takeSign(double a,
                              double b)

takeSign

public static int takeSign(int a,
                           int b)

cross

public static double cross(double x1,
                           double y1,
                           double x2,
                           double y2)

longitudeDistance

public static double longitudeDistance(double l1,
                                       double l2)

geocentricLatitude

public static double geocentricLatitude(double lat,
                                        double flatness)

geographicLatitude

public static double geographicLatitude(double lat,
                                        double flatness)

tsfn

public static double tsfn(double phi,
                          double sinphi,
                          double e)

msfn

public static double msfn(double sinphi,
                          double cosphi,
                          double es)

phi2

public static double phi2(double ts,
                          double e)

enfn

public static double[] enfn(double es)

mlfn

public static double mlfn(double phi,
                          double sphi,
                          double cphi,
                          double[] en)

inv_mlfn

public static double inv_mlfn(double arg,
                              double es,
                              double[] en)

authset

public static double[] authset(double es)

authlat

public static double authlat(double beta,
                             double[] APA)

qsfn

public static double qsfn(double sinphi,
                          double e,
                          double one_es)

niceNumber

public static double niceNumber(double x,
                                boolean round)

zpoly1

public static Complex zpoly1(Complex z,
                             Complex[] c)

Evaluate complex polynomial. Note coefficients are always C[1] to C[n], C[0] is always (0,0).

zpoly1d

public static Complex zpoly1d(Complex z,
                              Complex[] C,
                              Complex der)

Evaluate a complex polynomial and its derivative

isIdentity
```
public static boolean isIdentity(double[] transform)
```
Tests whether the datum parameter-based transform is the identity transform (in which case datum transformation can be short-circuited, thus avoiding some loss of numerical precision).

参数:

transform -

返回:

类 ProjectionMath

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

PI

HALFPI

QUARTERPI

FORTPI

TWOPI

RTD

DTR

EPS10

SECONDS_TO_RAD

MILLION

构造器详细资料

ProjectionMath

方法详细资料

sind

cosd

tand

asind

acosd

atand

atan2d

asin

acos

sqrt

distance

hypot

atan2

trunc

frac

degToRad

radToDeg

dmsToRad

dmsToDeg

normalizeLatitude

normalizeLongitude

normalizeAngle

greatCircleDistance

sphericalAzimuth

sameSigns

sameSigns

takeSign

takeSign

cross

longitudeDistance

geocentricLatitude

geographicLatitude

tsfn

msfn

phi2

enfn

mlfn

inv_mlfn

authset

authlat

qsfn

niceNumber

zpoly1

zpoly1d

isIdentity