javax.vecmath
Class Tuple2d

java.lang.Object
  javax.vecmath.Tuple2d

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

Point2d, Vector2d

public abstract class Tuple2d
extends java.lang.Object
implements java.io.Serializable, java.lang.Cloneable

A generic 2 element tuple that is represented by double precision floating point x,y coordinates.

Author:

Kenji hiranabe

See Also:

Serialized Form

Field Summary

double	x The x coordinate.
double	y The y coordinate.

Constructor Summary

Tuple2d()
Constructs and initializes a Tuple2d to (0,0).

Tuple2d(double[] t)
Constructs and initializes a Tuple2d from the specified array.

Tuple2d(double x, double y)
Constructs and initializes a Tuple2d from the specified xy coordinates.

Tuple2d(Tuple2d t1)
Constructs and initializes a Tuple2d from the specified Tuple2d.

Tuple2d(Tuple2f t1)
Constructs and initializes a Tuple2d from the specified Tuple2f.

Method Summary

void	absolute() Sets each component of this tuple to its absolute value.
void	absolute(Tuple2d t) Sets each component of the tuple parameter to its absolute value and places the modified values into this tuple.
void	add(Tuple2d t1) Sets the value of this tuple to the vector sum of itself and tuple t1.
void	add(Tuple2d t1, Tuple2d t2) Sets the value of this tuple to the vector sum of tuples t1 and t2.
void	clamp(double min, double max) Clamps this tuple to the range [low, high].
void	clamp(double min, double max, Tuple2d t) Clamps the tuple parameter to the range [low, high] and places the values into this tuple.
void	clampMax(double max) Clamps the maximum value of this tuple to the max parameter.
void	clampMax(double max, Tuple2d t) Clamps the maximum value of the tuple parameter to the max parameter and places the values into this tuple.
void	clampMin(double min) Clamps the minimum value of this tuple to the min parameter.
void	clampMin(double min, Tuple2d t) Clamps the minimum value of the tuple parameter to the min parameter and places the values into this tuple.
abstract java.lang.Object	clone()
boolean	epsilonEquals(Tuple2d t1, double epsilon) Returns true if the L-infinite distance between this tuple and tuple t1 is less than or equal to the epsilon parameter, otherwise returns false.
boolean	equals(java.lang.Object o1) Returns true if the Object o1 is of type Tuple2d and all of the data members of t1 are equal to the corresponding data members in this Tuple2d.
boolean	equals(Tuple2d t1) Returns true if all of the data members of Tuple2d t1 are equal to the corresponding data members in this
void	get(double[] t) Copies the value of the elements of this tuple into the array t[].
int	hashCode() Returns a hash number based on the data values in this object.
void	interpolate(Tuple2d t1, double alpha) Linearly interpolates between this tuple and tuple t1 and places the result into this tuple: this = (1-alpha)*this + alpha*t1.
void	interpolate(Tuple2d t1, Tuple2d t2, double alpha) Linearly interpolates between tuples t1 and t2 and places the result into this tuple: this = (1-alpha)*t1 + alpha*t2.
void	negate() Negates the value of this vector in place.
void	negate(Tuple2d t1) Sets the value of this tuple to the negation of tuple t1.
void	scale(double s) Sets the value of this tuple to the scalar multiplication of itself.
void	scale(double s, Tuple2d t1) Sets the value of this tuple to the scalar multiplication of tuple t1.
void	scaleAdd(double s, Tuple2d t1) Sets the value of this tuple to the scalar multiplication of itself and then adds tuple t1 (this = s*this + t1).
void	scaleAdd(double s, Tuple2d t1, Tuple2d t2) Sets the value of this tuple to the scalar multiplication of tuple t1 and then adds tuple t2 (this = s*t1 + t2).
void	set(double[] t) Sets the value of this tuple from the 2 values specified in the array.
void	set(double x, double y) Sets the value of this tuple to the specified xy coordinates.
void	set(Tuple2d t1) Sets the value of this tuple to the value of the Tuple2d argument.
void	set(Tuple2f t1) Sets the value of this tuple to the value of the Tuple2f argument.
void	sub(Tuple2d t1) Sets the value of this tuple to the vector difference of itself and tuple t1 (this = this - t1).
void	sub(Tuple2d t1, Tuple2d t2) Sets the value of this tuple to the vector difference of tuple t1 and t2 (this = t1 - t2).
java.lang.String	toString() Returns a string that contains the values of this Tuple2d.

Methods inherited from class java.lang.Object

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

Field Detail

x

public double x

The x coordinate.

y

public double y

The y coordinate.

Constructor Detail

Tuple2d

public Tuple2d()

Constructs and initializes a Tuple2d to (0,0).

Tuple2d

public Tuple2d(double[] t)

Constructs and initializes a Tuple2d from the specified array.

Parameters:

t - the array of length 2 containing xy in order

Tuple2d

public Tuple2d(double x,
               double y)

Constructs and initializes a Tuple2d from the specified xy coordinates.

Parameters:

x - the x coordinate

y - the y coordinate

Tuple2d

public Tuple2d(Tuple2d t1)

Constructs and initializes a Tuple2d from the specified Tuple2d.

Parameters:

t1 - the Tuple2d containing the initialization x y data

Tuple2d

public Tuple2d(Tuple2f t1)

Constructs and initializes a Tuple2d from the specified Tuple2f.

Parameters:

t1 - the Tuple2d containing the initialization x y data

Method Detail

absolute

public final void absolute()

Sets each component of this tuple to its absolute value.

absolute

public final void absolute(Tuple2d t)

Sets each component of the tuple parameter to its absolute value and places the modified values into this tuple.

Parameters:

t - the source tuple, which will not be modified

add

public final void add(Tuple2d t1)

Sets the value of this tuple to the vector sum of itself and tuple t1.

Parameters:

t1 - the other tuple

add

public final void add(Tuple2d t1,
                      Tuple2d t2)

Sets the value of this tuple to the vector sum of tuples t1 and t2.

Parameters:

t1 - the first tuple

t2 - the second tuple

clamp

public final void clamp(double min,
                        double max)

Clamps this tuple to the range [low, high].

Parameters:

min - the lowest value in this tuple after clamping

max - the highest value in this tuple after clamping

clamp

public final void clamp(double min,
                        double max,
                        Tuple2d t)

Clamps the tuple parameter to the range [low, high] and places the values into this tuple.

Parameters:

min - the lowest value in the tuple after clamping

max - the highest value in the tuple after clamping

t - the source tuple, which will not be modified

clampMax

public final void clampMax(double max)

Clamps the maximum value of this tuple to the max parameter.

Parameters:

max - the highest value in the tuple after clamping

clampMax

public final void clampMax(double max,
                           Tuple2d t)

Clamps the maximum value of the tuple parameter to the max parameter and places the values into this tuple.

Parameters:

max - the highest value in the tuple after clamping

t - the source tuple, which will not be modified

clampMin

public final void clampMin(double min)

Clamps the minimum value of this tuple to the min parameter.

Parameters:

min - the lowest value in this tuple after clamping

clampMin

public final void clampMin(double min,
                           Tuple2d t)

Clamps the minimum value of the tuple parameter to the min parameter and places the values into this tuple.

Parameters:

min - the lowest value in the tuple after clamping

clone

public abstract java.lang.Object clone()

Overrides:

clone in class java.lang.Object

epsilonEquals

public boolean epsilonEquals(Tuple2d t1,
                             double epsilon)

Returns true if the L-infinite distance between this tuple and tuple t1 is less than or equal to the epsilon parameter, otherwise returns false. The L-infinite distance is equal to MAX[abs(x1-x2), abs(y1-y2)].

Parameters:

t1 - the tuple to be compared to this tuple

epsilon - the threshold value

equals

public boolean equals(java.lang.Object o1)

Returns true if the Object o1 is of type Tuple2d and all of the data members of t1 are equal to the corresponding data members in this Tuple2d.

Overrides:

equals in class java.lang.Object

Parameters:

o1 - the object with which the comparison is made.

equals

public boolean equals(Tuple2d t1)

Returns true if all of the data members of Tuple2d t1 are equal to the corresponding data members in this

Parameters:

t1 - the vector with which the comparison is made.

get

public final void get(double[] t)

Copies the value of the elements of this tuple into the array t[].

Parameters:

t - the array that will contain the values of the vector

hashCode

public int hashCode()

Returns a hash number based on the data values in this object. Two different Tuple2d objects with identical data values (ie, returns true for equals(Tuple2d) ) will return the same hash number. Two vectors with different data members may return the same hash value, although this is not likely.

Overrides:

hashCode in class java.lang.Object

interpolate

public final void interpolate(Tuple2d t1,
                              double alpha)

Linearly interpolates between this tuple and tuple t1 and places the result into this tuple: this = (1-alpha)*this + alpha*t1.

Parameters:

t1 - the first tuple

alpha - the alpha interpolation parameter

interpolate

public final void interpolate(Tuple2d t1,
                              Tuple2d t2,
                              double alpha)

Linearly interpolates between tuples t1 and t2 and places the result into this tuple: this = (1-alpha)*t1 + alpha*t2.

Parameters:

t1 - the first tuple

t2 - the second tuple

alpha - the alpha interpolation parameter

negate

public final void negate()

Negates the value of this vector in place.

negate

public final void negate(Tuple2d t1)

Sets the value of this tuple to the negation of tuple t1.

Parameters:

t1 - the source vector

scale

public final void scale(double s)

Sets the value of this tuple to the scalar multiplication of itself.

Parameters:

s - the scalar value

scale

public final void scale(double s,
                        Tuple2d t1)

Sets the value of this tuple to the scalar multiplication of tuple t1.

Parameters:

s - the scalar value

t1 - the source tuple

scaleAdd

public final void scaleAdd(double s,
                           Tuple2d t1)

Sets the value of this tuple to the scalar multiplication of itself and then adds tuple t1 (this = s*this + t1).

Parameters:

s - the scalar value

t1 - the tuple to be added

scaleAdd

public final void scaleAdd(double s,
                           Tuple2d t1,
                           Tuple2d t2)

Sets the value of this tuple to the scalar multiplication of tuple t1 and then adds tuple t2 (this = s*t1 + t2).

Parameters:

s - the scalar value

t1 - the tuple to be multipled

t2 - the tuple to be added

set

public final void set(double[] t)

Sets the value of this tuple from the 2 values specified in the array.

Parameters:

t - the array of length 2 containing xy in order

set

public final void set(double x,
                      double y)

Sets the value of this tuple to the specified xy coordinates.

Parameters:

x - the x coordinate

y - the y coordinate

set

public final void set(Tuple2d t1)

Sets the value of this tuple to the value of the Tuple2d argument.

Parameters:

t1 - the tuple to be copied

set

public final void set(Tuple2f t1)

Sets the value of this tuple to the value of the Tuple2f argument.

Parameters:

t1 - the tuple to be copied

sub

public final void sub(Tuple2d t1)

Sets the value of this tuple to the vector difference of itself and tuple t1 (this = this - t1).

Parameters:

t1 - the other tuple

sub

public final void sub(Tuple2d t1,
                      Tuple2d t2)

Sets the value of this tuple to the vector difference of tuple t1 and t2 (this = t1 - t2).

Parameters:

t1 - the first tuple

t2 - the second tuple

toString

public java.lang.String toString()

Returns a string that contains the values of this Tuple2d. The form is (x,y).

Overrides:

toString in class java.lang.Object

Returns:

the String representation