Package com.jme3.bullet.collision.shapes

Class BoxCollisionShape

java.lang.Object

com.jme3.bullet.NativePhysicsObject

com.jme3.bullet.collision.shapes.CollisionShape

com.jme3.bullet.collision.shapes.ConvexShape

com.jme3.bullet.collision.shapes.BoxCollisionShape

All Implemented Interfaces:

Comparable<NativePhysicsObject>

public class BoxCollisionShape
extends ConvexShape

An axis-aligned, rectangular-solid collision shape based on Bullet's btBoxShape. For a rectangle, use Box2dShape.

Field Summary

Fields

Modifier and Type	Field	Description
static final Logger	logger2	message logger for this class

Fields inherited from class com.jme3.bullet.collision.shapes.ConvexShape

loggerX

Fields inherited from class com.jme3.bullet.collision.shapes.CollisionShape

enableContactFilter, logger, margin, scale

Fields inherited from class com.jme3.bullet.NativePhysicsObject

loggerN

Constructor Summary

Constructors

Constructor	Description
BoxCollisionShape(float halfExtent)	Instantiate a cube with the specified half extent.
BoxCollisionShape(float xHalfExtent, float yHalfExtent, float zHalfExtent)	Instantiate a box with the specified half extents.
BoxCollisionShape(Vector3f halfExtents)	Instantiate a box with the specified half extents.
BoxCollisionShape(FloatBuffer buffer, int startPosition, int endPosition)	Instantiate a box shape that encloses the sample locations in the specified FloatBuffer range.

Method Summary

Modifier and Type	Method	Description
Vector3f	getHalfExtents(Vector3f storeResult)	Copy the half extents of the box.
float	maxRadius()	Calculate how far the scaled shape extends from its center.
float	scaledVolume()	Estimate the volume of the collision shape, including scale and margin.
HullCollisionShape	toHullShape()	Approximate this shape with a HullCollisionShape.
float	unscaledVolume()	Return the unscaled volume of the box.

Methods inherited from class com.jme3.bullet.collision.shapes.ConvexShape

isConcave, isConvex, toSplittableShape

Methods inherited from class com.jme3.bullet.collision.shapes.CollisionShape

aabbCenter, boundingBox, boundingBox, canScale, canSplit, getDefaultMargin, getMargin, getScale, getScaleDp, getShapeType, getShapeType, isContactFilterEnabled, isInfinite, isNonMoving, isPolyhedral, nativeMargin, recalculateAabb, setContactFilterEnabled, setDefaultMargin, setMargin, setNativeId, setScale, setScale, setUserIndex, setUserIndex2, toString, updateScale, userIndex, userIndex2

Methods inherited from class com.jme3.bullet.NativePhysicsObject

compareTo, countTrackers, dumpTrackers, equals, freeUnusedObjects, hasAssignedNativeObject, hashCode, nativeId, reassignNativeId, setNativeIdNotTracked, unassignNativeObject

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

logger2

public static final Logger logger2

message logger for this class

Constructor Details

BoxCollisionShape

public BoxCollisionShape(float halfExtent)

Instantiate a cube with the specified half extent.

Parameters:

halfExtent - the desired half extent on each local axis, before scaling and excluding margin (≥0)

BoxCollisionShape

public BoxCollisionShape(float xHalfExtent,
 float yHalfExtent,
 float zHalfExtent)

Instantiate a box with the specified half extents.

Parameters:

xHalfExtent - the desired half extent on the local X axis, before scaling and excluding margin (≥0)

yHalfExtent - the desired half extent on the local Y axis, before scaling and excluding margin (≥0)

zHalfExtent - the desired half extent on the local Z axis, before scaling and excluding margin (≥0)

BoxCollisionShape

public BoxCollisionShape(FloatBuffer buffer,
 int startPosition,
 int endPosition)

Instantiate a box shape that encloses the sample locations in the specified FloatBuffer range.

Parameters:

buffer - the buffer that contains the sample locations (not null, unaffected)

startPosition - the position at which the sample locations start (≥0, ≤endPosition)

endPosition - the position at which the sample locations end (≥startPosition, ≤capacity)

BoxCollisionShape

public BoxCollisionShape(Vector3f halfExtents)

Instantiate a box with the specified half extents.

Parameters:

halfExtents - the desired half extents on each local axis, before scaling and excluding margin (not null, all components ≥0, unaffected)

Method Details

getHalfExtents

public Vector3f getHalfExtents(Vector3f storeResult)

Copy the half extents of the box.

Parameters:

storeResult - storage for the result (modified if not null)

Returns:

the unscaled half extent for each local axis (either storeResult or a new vector, not null, all components ≥0)

unscaledVolume

public float unscaledVolume()

Return the unscaled volume of the box.

Returns:

the volume (in shape units cubed, ≥0)

maxRadius

public float maxRadius()

Calculate how far the scaled shape extends from its center.

Overrides:

maxRadius in class CollisionShape

Returns:

the distance (in physics-space units, ≥0)

scaledVolume

public float scaledVolume()

Estimate the volume of the collision shape, including scale and margin.

Overrides:

scaledVolume in class ConvexShape

Returns:

the estimated volume (in physics-space units cubed, ≥0)

toHullShape

public HullCollisionShape toHullShape()

Approximate this shape with a HullCollisionShape.

Overrides:

toHullShape in class ConvexShape

Returns:

a new shape