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Class DVector
Class DVector
java.lang.Object

+DVector
 class DVector
 extends Object
A DVector represents a vector in R2; each coordinate
is a double.

DVector()
 Create a new DVector with unspecified coordinates (actually I
think the coords are initialized to 0, but don't count on this).

DVector(double, double)
 Create a new DVector with given coordinates.

array(double, double)
 Construct an array of DVectors; the array method takes
2,4,6, or 8 doubles, and returns an array of 1,2,3, or
4 DVectors, respectively.

array(double, double, double, double)

array(double, double, double, double, double, double)

array(double, double, double, double, double, double, double, double)

aString(DVector[])
 Convert an array of DVectors to a string.

copy()
 Return a copy of this vector.

dot(DVector)
 Return the dot product of this vector with another one.

length()
 Return the length (magnitude) of this DVector (sqrt(x^2 + y^2))

negate()
 Multiply this vector by 1.

scale(double)
 Multiply this vector by the scalar s.

toString()
 Convert a DVector to a String
DVector
public DVector(double x,
double y)
 Create a new DVector with given coordinates.
DVector
public DVector()
 Create a new DVector with unspecified coordinates (actually I
think the coords are initialized to 0, but don't count on this).
toString
public String toString()
 Convert a DVector to a String
 Overrides:
 toString in class Object
length
public double length()
 Return the length (magnitude) of this DVector (sqrt(x^2 + y^2))
negate
public void negate()
 Multiply this vector by 1.
scale
public void scale(double s)
 Multiply this vector by the scalar s.
dot
public double dot(DVector v)
 Return the dot product of this vector with another one.
copy
public DVector copy()
 Return a copy of this vector.
array
public static DVector[] array(double x0,
double y0)
 Construct an array of DVectors; the array method takes
2,4,6, or 8 doubles, and returns an array of 1,2,3, or
4 DVectors, respectively.
array
public static DVector[] array(double x0,
double y0,
double x1,
double y1)
array
public static DVector[] array(double x0,
double y0,
double x1,
double y1,
double x2,
double y2)
array
public static DVector[] array(double x0,
double y0,
double x1,
double y1,
double x2,
double y2,
double x3,
double y3)
aString
public static String aString(DVector v[])
 Convert an array of DVectors to a string.
Up: Java Kali Home Page
The Geometry Center Home Page
Author: Mark Phillips
Comments to:
webmaster@geom.umn.edu
Created: Sep 16 1996 
Last modified: Sep 18 1996