Package com.jme3.bullet.collision.shapes

Class SphereCollisionShape

java.lang.Object

com.jme3.bullet.NativePhysicsObject

com.jme3.bullet.collision.shapes.CollisionShape

com.jme3.bullet.collision.shapes.ConvexShape

com.jme3.bullet.collision.shapes.SphereCollisionShape

All Implemented Interfaces:

Comparable<NativePhysicsObject>

public class SphereCollisionShape
extends ConvexShape

A spherical collision shape based on Bullet's btSphereShape. These shapes have no margin and can only be scaled uniformly.

See Also:

• MultiSphere

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
SphereCollisionShape(float radius)	Instantiate a sphere shape with the specified radius.
SphereCollisionShape(FloatBuffer buffer, int startPosition, int endPosition)	Instantiate a sphere shape that encloses the sample locations in the specified FloatBuffer range.

Method Summary

Modifier and Type	Method	Description
boolean	canScale(Vector3f scale)	Test whether the specified scale factors can be applied to the shape.
float	getMargin()	Return the collision margin of the shape.
float	getRadius()	Return the radius of the sphere.
float	maxRadius()	Calculate how far the scaled shape extends from its center.
float	scaledVolume()	Estimate the volume of this shape, including scale and margin.
void	setMargin(float margin)	Alter the collision margin of this shape.
HullCollisionShape	toHullShape()	Approximate this shape with a HullCollisionShape.
float	unscaledVolume()	Return the unscaled volume of the sphere.

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, canSplit, getDefaultMargin, getScale, getScaleDp, getShapeType, getShapeType, isContactFilterEnabled, isInfinite, isNonMoving, isPolyhedral, nativeMargin, recalculateAabb, setContactFilterEnabled, setDefaultMargin, 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

SphereCollisionShape

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

Instantiate a sphere 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)

SphereCollisionShape

public SphereCollisionShape(float radius)

Instantiate a sphere shape with the specified radius.

Parameters:

radius - the desired unscaled radius (in shape units, ≥0)

Method Details

getRadius

public float getRadius()

Return the radius of the sphere.

Returns:

the unscaled radius (in shape units, ≥0)

unscaledVolume

public float unscaledVolume()

Return the unscaled volume of the sphere.

Returns:

the volume (in shape units cubed, ≥0)

canScale

public boolean canScale(Vector3f scale)

Test whether the specified scale factors can be applied to the shape. For sphere shapes, scaling must be uniform.

Overrides:

canScale in class CollisionShape

Parameters:

scale - the desired scale factor for each local axis (may be null, unaffected)

Returns:

true if applicable, otherwise false

getMargin

public float getMargin()

Return the collision margin of the shape.

Overrides:

getMargin in class CollisionShape

Returns:

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 this shape, including scale and margin.

Overrides:

scaledVolume in class ConvexShape

Returns:

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

setMargin

public void setMargin(float margin)

Alter the collision margin of this shape. This feature is disabled for sphere shapes.

Overrides:

setMargin in class CollisionShape

Parameters:

margin - the desired margin thickness (in physics-space units)

toHullShape

public HullCollisionShape toHullShape()

Approximate this shape with a HullCollisionShape.

Overrides:

toHullShape in class ConvexShape

Returns:

a new shape