Package org.jbox2d.collision

Class AABB

java.lang.Object

org.jbox2d.collision.AABB

public class AABB
extends java.lang.Object

An axis-aligned bounding box.

Field Summary

Fields

Modifier and Type	Field	Description
Vec2	lowerBound	Bottom left vertex of bounding box.
Vec2	upperBound	Top right vertex of bounding box.

Constructor Summary

Constructors

Constructor	Description
AABB()	Creates the default object, with vertices at 0,0 and 0,0.
AABB(AABB copy)	Copies from the given object
AABB(Vec2 lowerVertex, Vec2 upperVertex)	Creates an AABB object using the given bounding vertices.

Method Summary

Modifier and Type	Method	Description
void	combine(AABB aabb)	Combines another aabb with this one
void	combine(AABB aabb1, AABB aab)	Combine two AABBs into this one.
boolean	contains(AABB aabb)	Does this aabb contain the provided AABB.
Vec2	getCenter()	Get the center of the AABB
void	getCenterToOut(Vec2 out)
Vec2	getExtents()	Get the extents of the AABB (half-widths).
void	getExtentsToOut(Vec2 out)
float	getPerimeter()	Gets the perimeter length
void	getVertices(Vec2[] argRay)
boolean	isValid()	Verify that the bounds are sorted
boolean	raycast(RayCastOutput output, RayCastInput input)	Deprecated. please use raycast(RayCastOutput, RayCastInput, IWorldPool) for better performance
boolean	raycast(RayCastOutput output, RayCastInput input, IWorldPool argPool)	From Real-time Collision Detection, p179.
void	set(AABB aabb)	Sets this object from the given object
static boolean	testOverlap(AABB a, AABB b)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

lowerBound

public final Vec2 lowerBound

Bottom left vertex of bounding box.

upperBound

public final Vec2 upperBound

Top right vertex of bounding box.

Constructor Detail

AABB

public AABB()

Creates the default object, with vertices at 0,0 and 0,0.

AABB

public AABB(AABB copy)

Copies from the given object

Parameters:

copy - the object to copy from

AABB

public AABB(Vec2 lowerVertex,
            Vec2 upperVertex)

Creates an AABB object using the given bounding vertices.

Parameters:

lowerVertex - the bottom left vertex of the bounding box

maxVertex - the top right vertex of the bounding box

Method Detail

set

public final void set(AABB aabb)

Sets this object from the given object

Parameters:

aabb - the object to copy from

isValid

public final boolean isValid()

Verify that the bounds are sorted

getCenter

public final Vec2 getCenter()

Get the center of the AABB

Returns:

getCenterToOut

public final void getCenterToOut(Vec2 out)

getExtents

public final Vec2 getExtents()

Get the extents of the AABB (half-widths).

Returns:

getExtentsToOut

public final void getExtentsToOut(Vec2 out)

getVertices

public final void getVertices(Vec2[] argRay)

combine

public final void combine(AABB aabb1,
                          AABB aab)

Combine two AABBs into this one.

Parameters:

aabb1 -

aab -

getPerimeter

public final float getPerimeter()

Gets the perimeter length

Returns:

combine

public final void combine(AABB aabb)

Combines another aabb with this one

Parameters:

aabb -

contains

public final boolean contains(AABB aabb)

Does this aabb contain the provided AABB.

Returns:

raycast

public final boolean raycast(RayCastOutput output,
                             RayCastInput input)

Deprecated.

please use raycast(RayCastOutput, RayCastInput, IWorldPool) for better performance

Parameters:

output -

input -

Returns:

raycast

public final boolean raycast(RayCastOutput output,
                             RayCastInput input,
                             IWorldPool argPool)

From Real-time Collision Detection, p179.

Parameters:

output -

input -

testOverlap

public static final boolean testOverlap(AABB a,
                                        AABB b)

toString

public final java.lang.String toString()

Overrides:

toString in class java.lang.Object