Class vector

java.lang.Object
  vector

public class vector

extends java.lang.Object

Trieda popisujuca dvojrozmerny vektor a staticke metody pre narabanie s vektormi Pre odbornikov poznamanevame, ze sa tu trochu priecime ducho objektoveho programovania lebo pouzivame skor proceduralny pristup cez staticke metody triedy namiesto toho aby sme volali objekt a jeho metody. Staticky pristup sa nam javi sympatickejsi najme pri scitani dvoch vektorov, lebo je voci obom vektorom sysmetricky Pri nasobeni vektora skalarom by uzx bol mozno prirodzenesji objektovy pristup, ale pre zaciatocnikov je nazornejsi staticky pristup Pri "jednovektorovych" funkciach abs a unit dodrziavame prirodzeny objektovy pristup

Field Summary

double	x xova zlozka vektora
double	y yova zlozka vektora

Constructor Summary

vector(double vx, double vy)

Method Summary

double	abs() Vrati velkost vektora
static vector	direction(point B, point A) Vrati jednotkovy vektor smerujuci z bodu A do bodu B
static vector	plus(vector v1, vector v2) staticka metoda scita dva vektory
static double	scalarproduct(vector v1, vector v2) vypocita skalarny sucin dvoch vektorov
static vector	times(double c, vector v) staticka metoda vynasobi vektor skalarom
vector	unit() Vrati jednotkovy vektor v smere vektora this

Methods inherited from class java.lang.Object

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

Field Detail

x

public double x

xova zlozka vektora

y

public double y

yova zlozka vektora

Constructor Detail

vector

public vector(double vx,
              double vy)

Method Detail

plus

public static vector plus(vector v1,
                          vector v2)

staticka metoda scita dva vektory

times

public static vector times(double c,
                           vector v)

staticka metoda vynasobi vektor skalarom

scalarproduct

public static double scalarproduct(vector v1,
                                   vector v2)

vypocita skalarny sucin dvoch vektorov

abs

public double abs()

Vrati velkost vektora

unit

public vector unit()

Vrati jednotkovy vektor v smere vektora this

direction

public static vector direction(point B,
                               point A)

Vrati jednotkovy vektor smerujuci z bodu A do bodu B