Package javax.vecmath
Class Point4d
- java.lang.Object
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- javax.vecmath.Tuple4d
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- javax.vecmath.Point4d
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- All Implemented Interfaces:
java.io.Serializable
public class Point4d extends Tuple4d implements java.io.Serializable
A 4 element point that is represented by double precision floating point x,y,z,w coordinates.- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description Point4d()
Constructs and initializes a Point4d to (0,0,0,0).Point4d(double[] p)
Constructs and initializes a Point4d from the specified array.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.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description 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.
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Constructor Detail
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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 coordinatey
- the y coordinatez
- the z coordinatew
- the w coordinate
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Point4d
public Point4d(double[] p)
Constructs and initializes a Point4d from the specified array.- Parameters:
p
- the array of length 4 containing xyzw in order
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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
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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
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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
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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
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Point4d
public Point4d()
Constructs and initializes a Point4d to (0,0,0,0).
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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
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Method Detail
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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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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
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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.
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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
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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
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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
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