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javax.vecmath

Class Point4d

Implemented Interfaces:
Serializable
public class Point4d
extends Tuple4d
implements Serializable
A 4 element point that is represented by double precision floating point x,y,z,w coordinates.
Version:
specification 1.1, implementation $Revision: 1.10 $, $Date: 1999/10/05 07:03:50 $
Author:
Kenji hiranabe

Field Summary

Fields inherited from class javax.vecmath.Tuple4d

w, x, y, z

Constructor Summary

Point4d()
Constructs and initializes a Point4d to (0,0,0,0).
Point4d(double x, double y, double z, double w)
Constructs and initializes a Point4d from the specified xyzw coordinates.
Point4d(Point4d p1)
Constructs and initializes a Point4d from the specified Point4d.
Point4d(Point4f p1)
Constructs and initializes a Point4d from the specified Point4f.
Point4d(Tuple3d t1)
Constructs and initializes a Point4d from the specified Tuple3d.
Point4d(Tuple4d t1)
Constructs and initializes a Point4d from the specified Tuple4d.
Point4d(Tuple4f t1)
Constructs and initializes a Point4d from the specified Tuple4f.
Point4d(p[] )
Constructs and initializes a Point4d from the specified array.

Method Summary

double
distance(Point4d p1)
Returns the distance between this point and point p1.
double
distanceL1(Point4d p1)
Computes the L-1 (Manhattan) distance between this point and point p1.
double
distanceLinf(Point4d p1)
Computes the L-infinite distance between this point and point p1.
double
distanceSquared(Point4d p1)
Computes the square of the distance between this point and point p1.
void
project(Point4d p1)
Multiplies each of the x,y,z components of the Point4d parameter by 1/w, places the projected values into this point, and places a 1 as the w parameter of this point.
void
set(Tuple3d t1)
Sets the x,y,z components of this point to the corresponding components of tuple t1.

Methods inherited from class javax.vecmath.Tuple4d

absolute, absolute, add, add, clamp, clamp, clampMax, clampMax, clampMin, clampMin, epsilonEquals, equals, get, get, hashCode, interpolate, interpolate, negate, negate, scale, scale, scaleAdd, scaleAdd, set, set, set, set, sub, sub, toString

Constructor Details

Point4d

public Point4d()
Constructs and initializes a Point4d to (0,0,0,0).

Point4d

public Point4d(double x,
               double y,
               double z,
               double w)
Constructs and initializes a Point4d from the specified xyzw coordinates.
Parameters:
x - the x coordinate
y - the y coordinate
z - the z coordinate
w - the w coordinate

Point4d

public Point4d(Point4d p1)
Constructs and initializes a Point4d from the specified Point4d.
Parameters:
p1 - the Point4d containing the initialization x y z w data

Point4d

public Point4d(Point4f p1)
Constructs and initializes a Point4d from the specified Point4f.
Parameters:
p1 - the Point4f containing the initialization x y z w data

Point4d

public Point4d(Tuple3d t1)
Constructs and initializes a Point4d from the specified Tuple3d. The x,y,z components of this point are set to the corresponding components of tuple t1. The w component of this point is set to 1.
Parameters:
t1 - the tuple to be copied
Since:
Java3D 1.2

Point4d

public Point4d(Tuple4d t1)
Constructs and initializes a Point4d from the specified Tuple4d.
Parameters:
t1 - the Tuple4d containing the initialization x y z w data

Point4d

public Point4d(Tuple4f t1)
Constructs and initializes a Point4d from the specified Tuple4f.
Parameters:
t1 - the Tuple4f containing the initialization x y z w data

Point4d

public Point4d(p[] )
Constructs and initializes a Point4d from the specified array.
Parameters:

Method Details

distance

public final double distance(Point4d p1)
Returns the distance between this point and point p1.
Parameters:
p1 - the other point
Returns:
the distance between this point and point p1.

distanceL1

public final double distanceL1(Point4d p1)
Computes the L-1 (Manhattan) distance between this point and point p1. The L-1 distance is equal to abs(x1-x2) + abs(y1-y2) + abs(z1-z2) + abs(w1-w2).
Parameters:
p1 - the other point
Returns:
L-1 distance

distanceLinf

public final double distanceLinf(Point4d p1)
Computes the L-infinite distance between this point and point p1. The L-infinite distance is equal to MAX[abs(x1-x2), abs(y1-y2), abs(z1-z2), abs(w1-w2)].
Parameters:
p1 - the other point
Returns:
L-infinite distance

distanceSquared

public final double distanceSquared(Point4d p1)
Computes the square of the distance between this point and point p1.
Parameters:
p1 - the other point
Returns:
the square of distance between this point and p1

project

public final void project(Point4d p1)
Multiplies each of the x,y,z components of the Point4d parameter by 1/w, places the projected values into this point, and places a 1 as the w parameter of this point.
Parameters:
p1 - the source Point4d, which is not modified

set

public final void set(Tuple3d t1)
Sets the x,y,z components of this point to the corresponding components of tuple t1. The w component of this point is set to 1.
Parameters:
t1 - the tuple to be copied
Since:
Java3D 1.2

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