Package org.jbox2d.common

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.

Author:

Daniel Murphy

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 Transform	mul(Transform A, Transform B)
static Vec2	mul(Transform T, Vec2 v)
static void	mulToOut(Transform A, Transform B, Transform out)
static void	mulToOut(Transform T, Vec2 v, Vec2 out)
static void	mulToOutUnsafe(Transform A, Transform B, Transform out)
static void	mulToOutUnsafe(Transform T, Vec2 v, Vec2 out)
static Transform	mulTrans(Transform A, Transform B)
static Vec2	mulTrans(Transform T, Vec2 v)
static void	mulTransToOut(Transform A, Transform B, Transform out)
static void	mulTransToOut(Transform T, Vec2 v, Vec2 out)
static void	mulTransToOutUnsafe(Transform A, Transform B, Transform out)
static 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 java.lang.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.

setIdentity

public final void setIdentity()

Set this to the identity transform.

mul

public static Vec2 mul(Transform T,
 Vec2 v)

mulToOut

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

mulToOutUnsafe

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

mulTrans

public static Vec2 mulTrans(Transform T,
 Vec2 v)

mulTransToOut

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

mulTransToOutUnsafe

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

mul

public static Transform mul(Transform A,
 Transform B)

mulToOut

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

mulToOutUnsafe

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

mulTrans

public static Transform mulTrans(Transform A,
 Transform B)

mulTransToOut

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

mulTransToOutUnsafe

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

toString

public final String toString()

Overrides:

toString in class Object