Class Transform

java.lang.Object

org.jbox2d.common.Transform

All Implemented Interfaces:

Serializable

public class Transform
extends Object
implements Serializable

A transform contains translation and rotation. It is used to represent the position and orientation of rigid frames.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
final Vec2	p	The translation caused by the transform
final Rot	q	A matrix representing a rotation

Constructor Summary

Constructors

Constructor	Description
Transform()	The default constructor.
Transform(Transform xf)	Initialize as a copy of another transform.
Transform(Vec2 _position, Rot _R)	Initialize using a position vector and a rotation matrix.

Method Summary

Modifier and Type	Method	Description
static final Transform	mul(Transform A, Transform B)
static final Vec2	mul(Transform T, Vec2 v)
static final void	mulToOut(Transform A, Transform B, Transform out)
static final void	mulToOut(Transform T, Vec2 v, Vec2 out)
static final void	mulToOutUnsafe(Transform A, Transform B, Transform out)
static final void	mulToOutUnsafe(Transform T, Vec2 v, Vec2 out)
static final Transform	mulTrans(Transform A, Transform B)
static final Vec2	mulTrans(Transform T, Vec2 v)
static final void	mulTransToOut(Transform A, Transform B, Transform out)
static final void	mulTransToOut(Transform T, Vec2 v, Vec2 out)
static final void	mulTransToOutUnsafe(Transform A, Transform B, Transform out)
static final void	mulTransToOutUnsafe(Transform T, Vec2 v, Vec2 out)
final Transform	set(Transform xf)	Set this to equal another transform.
final void	set(Vec2 p, float angle)	Set this based on the position and angle.
final void	setIdentity()	Set this to the identity transform.
final String	toString()

Methods inherited from class Object

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

Field Details

p

public final Vec2 p

The translation caused by the transform

q

public final Rot q

A matrix representing a rotation

Constructor Details

Transform

public Transform()

The default constructor.

Transform

public Transform(Transform xf)

Initialize as a copy of another transform.

Transform

public Transform(Vec2 _position,
 Rot _R)

Initialize using a position vector and a rotation matrix.

Method Details

set

public final Transform set(Transform xf)

Set this to equal another transform.

set

public final void set(Vec2 p,
 float angle)

Set this based on the position and angle.

Parameters:

p -

angle -

setIdentity

public final void setIdentity()

Set this to the identity transform.

mul

public static final Vec2 mul(Transform T,
 Vec2 v)

mulToOut

public static final void mulToOut(Transform T,
 Vec2 v,
 Vec2 out)

mulToOutUnsafe

public static final void mulToOutUnsafe(Transform T,
 Vec2 v,
 Vec2 out)

mulTrans

public static final Vec2 mulTrans(Transform T,
 Vec2 v)

mulTransToOut

public static final void mulTransToOut(Transform T,
 Vec2 v,
 Vec2 out)

mulTransToOutUnsafe

public static final void mulTransToOutUnsafe(Transform T,
 Vec2 v,
 Vec2 out)

mul

public static final Transform mul(Transform A,
 Transform B)

mulToOut

public static final void mulToOut(Transform A,
 Transform B,
 Transform out)

mulToOutUnsafe

public static final void mulToOutUnsafe(Transform A,
 Transform B,
 Transform out)

mulTrans

public static final Transform mulTrans(Transform A,
 Transform B)

mulTransToOut

public static final void mulTransToOut(Transform A,
 Transform B,
 Transform out)

mulTransToOutUnsafe

public static final void mulTransToOutUnsafe(Transform A,
 Transform B,
 Transform out)

toString

public final String toString()

Overrides:

toString in class Object