## javax.vecmath Class AxisAngle4d

```java.lang.Object
javax.vecmath.AxisAngle4d
```
All Implemented Interfaces:
java.io.Serializable

`public class AxisAngle4dextends java.lang.Objectimplements java.io.Serializable`

A 4 element axis angle represented by double precision floating point x,y,z,angle components. An axis angle is a rotation of angle (radians) about the vector (x,y,z).

Author:
Kenji hiranabe
Serialized Form

Field Summary
` double` `angle`
The angle.
` double` `x`
The x coordinate.
` double` `y`
The y coordinate.
` double` `z`
The z coordinate.

Constructor Summary
`AxisAngle4d()`
Constructs and initializes a AxisAngle4d to (0,0,1,0).
`AxisAngle4d(AxisAngle4d a1)`
Constructs and initializes a AxisAngle4d from the specified AxisAngle4d.
`AxisAngle4d(AxisAngle4f a1)`
Constructs and initializes a AxisAngle4d from the specified AxisAngle4f.
`AxisAngle4d(double[] a)`
Constructs and initializes an AxisAngle4d from the components contained in the array.
```AxisAngle4d(double x, double y, double z, double angle)```
Constructs and initializes an AxisAngle4d from the specified x, y, z, and angle.
```AxisAngle4d(Vector3d axis, double angle)```
Constructs and initializes an AxisAngle4d from the specified axis and angle.

Method Summary
` boolean` ```epsilonEquals(AxisAngle4d a1, double epsilon)```
Returns true if the L-infinite distance between this axis-angle and axis-angle t1 is less than or equal to the epsilon parameter, otherwise returns false.
` boolean` `equals(AxisAngle4d a1)`
Returns true if all of the data members of AxisAngle4d t1 are equal to the corresponding data members in this
` boolean` `equals(java.lang.Object o1)`
Returns true if the Object o1 is of type AxisAngle4d and all of the data members of t1 are equal to the corresponding data members in this AxisAngle4d.
` void` `get(double[] a)`
Gets the value of this axis angle into the array a of length four in x,y,z,angle order.
` int` `hashCode()`
Returns a hash number based on the data values in this object.
` void` `set(AxisAngle4d a1)`
Sets the value of this axis angle to the value of axis angle t1.
` void` `set(AxisAngle4f a1)`
Sets the value of this axis angle to the value of axis angle t1.
` void` `set(double[] a)`
Sets the value of this axis angle from the 4 values specified in the array.
` void` ```set(double x, double y, double z, double angle)```
Sets the value of this axis angle to the specified x,y,z,angle.
` void` `set(Matrix3d m1)`
Sets the value of this axis-angle to the rotational component of the passed matrix.
` void` `set(Matrix3f m1)`
Sets the value of this axis-angle to the rotational component of the passed matrix.
` void` `set(Matrix4d m1)`
Sets the value of this axis-angle to the rotational component of the passed matrix.
` void` `set(Matrix4f m1)`
Sets the value of this axis-angle to the rotational component of the passed matrix.
` void` `set(Quat4d q1)`
Sets the value of this axis-angle to the rotational equivalent of the passed quaternion.
` void` `set(Quat4f q1)`
Sets the value of this axis-angle to the rotational equivalent of the passed quaternion.
` void` ```set(Vector3d axis, double angle)```
Sets the value of this AxisAngle4d to the specified axis and angle.
` java.lang.String` `toString()`
Returns a string that contains the values of this AxisAngle4d.

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

Field Detail

### angle

`public double angle`
The angle.

### x

`public double x`
The x coordinate.

### y

`public double y`
The y coordinate.

### z

`public double z`
The z coordinate.

Constructor Detail

### AxisAngle4d

`public AxisAngle4d()`
Constructs and initializes a AxisAngle4d to (0,0,1,0).

### AxisAngle4d

`public AxisAngle4d(AxisAngle4d a1)`
Constructs and initializes a AxisAngle4d from the specified AxisAngle4d.

Parameters:
`a1` - the AxisAngle4d containing the initialization x y z angle data

### AxisAngle4d

`public AxisAngle4d(AxisAngle4f a1)`
Constructs and initializes a AxisAngle4d from the specified AxisAngle4f.

Parameters:
`a1` - the AxisAngle4f containing the initialization x y z angle data

### AxisAngle4d

`public AxisAngle4d(double[] a)`
Constructs and initializes an AxisAngle4d from the components contained in the array.

Parameters:
`a` - the array of length 4 containing x,y,z,angle in order

### AxisAngle4d

```public AxisAngle4d(double x,
double y,
double z,
double angle)```
Constructs and initializes an AxisAngle4d from the specified x, y, z, and angle.

Parameters:
`x` - the x coordinate
`y` - the y coordinate
`z` - the z coordinate
`angle` - the angle.

### AxisAngle4d

```public AxisAngle4d(Vector3d axis,
double angle)```
Constructs and initializes an AxisAngle4d from the specified axis and angle.

Parameters:
`axis` - the axis
`angle` - the angle
Since:
Java 3D 1.2
Method Detail

### epsilonEquals

```public boolean epsilonEquals(AxisAngle4d a1,
double epsilon)```
Returns true if the L-infinite distance between this axis-angle and axis-angle 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), abs(z1-z2), abs(angle1-angle2)].

Parameters:
`a1` - the axis-angle to be compared to this axis-angle
`epsilon` - the threshold value

### equals

`public boolean equals(AxisAngle4d a1)`
Returns true if all of the data members of AxisAngle4d t1 are equal to the corresponding data members in this

Parameters:
`a1` - the vector with which the comparison is made.

### equals

`public boolean equals(java.lang.Object o1)`
Returns true if the Object o1 is of type AxisAngle4d and all of the data members of t1 are equal to the corresponding data members in this AxisAngle4d.

Overrides:
`equals` in class `java.lang.Object`
Parameters:
`o1` - the object with which the comparison is made.

### get

`public final void get(double[] a)`
Gets the value of this axis angle into the array a of length four in x,y,z,angle order.

Parameters:
`a` - the array of length four

### hashCode

`public int hashCode()`
Returns a hash number based on the data values in this object. Two different AxisAngle4d objects with identical data values (ie, returns true for equals(AxisAngle4d) ) 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`

### set

`public final void set(AxisAngle4d a1)`
Sets the value of this axis angle to the value of axis angle t1.

Parameters:
`t1` - the axis angle to be copied

### set

`public final void set(AxisAngle4f a1)`
Sets the value of this axis angle to the value of axis angle t1.

Parameters:
`t1` - the axis angle to be copied

### set

`public final void set(double[] a)`
Sets the value of this axis angle from the 4 values specified in the array.

Parameters:
`a` - the array of length 4 containing x,y,z,angle in order

### set

```public final void set(double x,
double y,
double z,
double angle)```
Sets the value of this axis angle to the specified x,y,z,angle.

Parameters:
`x` - the x coordinate
`y` - the y coordinate
`z` - the z coordinate
`angle` - the angle

### set

`public final void set(Matrix3d m1)`
Sets the value of this axis-angle to the rotational component of the passed matrix.

Parameters:
`m1` - the matrix3d

### set

`public final void set(Matrix3f m1)`
Sets the value of this axis-angle to the rotational component of the passed matrix.

Parameters:
`m1` - the matrix3f

### set

`public final void set(Matrix4d m1)`
Sets the value of this axis-angle to the rotational component of the passed matrix.

Parameters:
`m1` - the matrix4d

### set

`public final void set(Matrix4f m1)`
Sets the value of this axis-angle to the rotational component of the passed matrix.

Parameters:
`m1` - the matrix4f

### set

`public final void set(Quat4d q1)`
Sets the value of this axis-angle to the rotational equivalent of the passed quaternion.

Parameters:
`q1` - the Quat4d

### set

`public final void set(Quat4f q1)`
Sets the value of this axis-angle to the rotational equivalent of the passed quaternion.

Parameters:
`q1` - the Quat4f

### set

```public final void set(Vector3d axis,
double angle)```
Sets the value of this AxisAngle4d to the specified axis and angle.

Parameters:
`axis` - the axis
`angle` - the angle
Since:
Java 3D 1.2

### toString

`public java.lang.String toString()`
Returns a string that contains the values of this AxisAngle4d. The form is (x,y,z,angle).

Overrides:
`toString` in class `java.lang.Object`
Returns:
the String representation