## javax.vecmath
Class Point4f

    java.lang.Object
      javax.vecmath.Tuple4f
          javax.vecmath.Point4f

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable

    public class Point4f

extends Tuple4f
implements java.io.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 javax.vecmath.Tuple4f
`w, x, y, z`

Constructor Summary
`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
`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 javax.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

Copyright 1996-2008 Sun Microsystems, Inc. All Rights Reserved. Use is subject to license terms.