de.enough.polish.graphics3d.m3g.utils
Class Quaternion

java.lang.Object
  de.enough.polish.graphics3d.m3g.utils.Quaternion

public class Quaternion
extends Object

Quaternion implementation.

Useful for Transform.postRotateQuat() transforms

Author:

Anders Bo Pedersen, anders@wicore.dk

Field Summary

float	w
float	x
float	y
float	z

Constructor Summary

Quaternion()

Quaternion(float x, float y, float z, float w)

Method Summary

float	getW()
float	getX()
float	getY()
float	getZ()
double	length()
void	normalize()
Quaternion	postMultiply(Quaternion other) Multiply quaternions
String	propertiesToString()
void	set(float x, float y, float z, float w)
void	setAxisAngle(float angle, float x, float y, float z) Sets the values of quaternion by converting the given axis-angle values.
void	setFromEulerAngles(float rx, float ry, float rz) Sets the values of quaternion from Euler angles
void	setIdentity()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

x

public volatile float x

y

public volatile float y

z

public volatile float z

w

public volatile float w

Constructor Detail

Quaternion

public Quaternion()

Quaternion

public Quaternion(float x,
                  float y,
                  float z,
                  float w)

Method Detail

setIdentity

public void setIdentity()

setAxisAngle

public void setAxisAngle(float angle,
                         float x,
                         float y,
                         float z)

Sets the values of quaternion by converting the given axis-angle values.

Parameters:

angle - of rotation in degrees

x - component of rotation axis

y - component of rotation axis

z - component of rotation axis

setFromEulerAngles

public void setFromEulerAngles(float rx,
                               float ry,
                               float rz)

Sets the values of quaternion from Euler angles

Parameters:

rx - angle of rotation around x-axis in degrees

ry - angle of rotation around y-axis in degrees

rz - angle of rotation around z-axis in degrees

postMultiply

public Quaternion postMultiply(Quaternion other)

Multiply quaternions

self * other

Parameters:

other - right hand side quaternion

Returns:

his quaternion

normalize

public void normalize()

length

public double length()

set

public void set(float x,
                float y,
                float z,
                float w)

getX

public float getX()

getY

public float getY()

getZ

public float getZ()

getW

public float getW()

propertiesToString

public String propertiesToString()