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javax.vecmath

Class Point4f

Implemented Interfaces:
Serializable
public class Point4f
extends Tuple4f
implements Serializable
A 4 element point that is represented by single 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.Tuple4f

w, x, y, z

Constructor Summary

Point4f()
Constructs and initializes a Point4f to (0,0,0,0).
Point4f(float x, float y, float z, float w)
Constructs and initializes a Point4f from the specified xyzw coordinates.
Point4f(Point4d p1)
Constructs and initializes a Point4f from the specified Point4d.
Point4f(Point4f p1)
Constructs and initializes a Point4f from the specified Point4f.
Point4f(Tuple3f t1)
Constructs and initializes a Point4d from the specified Tuple3f.
Point4f(Tuple4d t1)
Constructs and initializes a Point4f from the specified Tuple4d.
Point4f(Tuple4f t1)
Constructs and initializes a Point4f from the specified Tuple4f.
Point4f(p[] )
Constructs and initializes a Point4f from the specified array.

Method Summary

float
distance(Point4f p1)
Returns the distance between this point and point p1.
float
distanceL1(Point4f p1)
Computes the L-1 (Manhattan) distance between this point and point p1.
float
distanceLinf(Point4f p1)
Computes the L-infinite distance between this point and point p1.
float
distanceSquared(Point4f p1)
Computes the square of the distance between this point and point p1.
void
project(Point4f p1)
Multiplies each of the x,y,z components of the Point4f parameter by 1/w, places the projected values into this point, and places a 1 as the w parameter of this point.
void
set(Tuple3f t1)
Sets the x,y,z components of this point to the corresponding components of tuple t1.

Methods inherited from class javax.vecmath.Tuple4f

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

Point4f

public Point4f()
Constructs and initializes a Point4f to (0,0,0,0).

Point4f

public Point4f(float x,
               float y,
               float z,
               float w)
Constructs and initializes a Point4f from the specified xyzw coordinates.
Parameters:
x - the x coordinate
y - the y coordinate
z - the z coordinate
w - the w coordinate

Point4f

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

Point4f

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

Point4f

public Point4f(Tuple3f t1)
Constructs and initializes a Point4d from the specified Tuple3f. 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

Point4f

public Point4f(Tuple4d t1)
Constructs and initializes a Point4f from the specified Tuple4d.
Parameters:
t1 - the Tuple4d containing the initialization x y z w data

Point4f

public Point4f(Tuple4f t1)
Constructs and initializes a Point4f from the specified Tuple4f.
Parameters:
t1 - the Tuple4f containing the initialization x y z w data

Point4f

public Point4f(p[] )
Constructs and initializes a Point4f from the specified array.
Parameters:

Method Details

distance

public final float distance(Point4f p1)
Returns the distance between this point and point p1.
Parameters:
p1 - the other point
Returns:
the distance between these two points

distanceL1

public final float distanceL1(Point4f 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 float distanceLinf(Point4f 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 float distanceSquared(Point4f p1)
Computes the square of the distance between this point and point p1.
Parameters:
p1 - the other point
Returns:
the square of distance between these two points as a float

project

public final void project(Point4f p1)
Multiplies each of the x,y,z components of the Point4f 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(Tuple3f 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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