org.scijava.vecmath

Class Point4f

java.lang.Object

org.scijava.vecmath.Tuple4f

org.scijava.vecmath.Point4f

All Implemented Interfaces:

Serializable, Cloneable

public class Point4f
extends Tuple4f
implements Serializable

A 4 element point represented by single precision floating point x,y,z,w coordinates.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.scijava.vecmath.Tuple4f

w, x, y, z

Constructor Summary

Constructors

Constructor and Description
Point4f() Constructs and initializes a Point4f to (0,0,0,0).
Point4f(float[] p) Constructs and initializes a Point4f from the array of length 4.
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 Point4f 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.

Method Summary

Methods

Modifier and Type	Method and Description
float	distance(Point4f p1) Computes 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 org.scijava.vecmath.Tuple4f

absolute, absolute, add, add, clamp, clamp, clampMax, clampMax, clampMin, clampMin, clone, epsilonEquals, equals, equals, get, get, getW, getX, getY, getZ, hashCode, interpolate, interpolate, negate, negate, scale, scale, scaleAdd, scaleAdd, set, set, set, set, setW, setX, setY, setZ, sub, sub, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

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(float[] p)

Constructs and initializes a Point4f from the array of length 4.

Parameters:

p - the array of length 4 containing xyzw in order

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(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(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(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(Tuple3f t1)

Constructs and initializes a Point4f 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:

vecmath 1.2

Point4f

public Point4f()

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

Method Detail

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:

vecmath 1.2

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

distance

public final float distance(Point4f p1)

Computes the distance between this point and point p1.

Parameters:

p1 - the other point

Returns:

the distance between the 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:

the 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:

the L-infinite distance

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 Point4f, which is not modified