Package com.jme3.bullet.collision.shapes

Class MinkowskiSum

java.lang.Object

com.jme3.bullet.NativePhysicsObject

com.jme3.bullet.collision.shapes.CollisionShape

com.jme3.bullet.collision.shapes.ConvexShape

com.jme3.bullet.collision.shapes.MinkowskiSum

All Implemented Interfaces:

Comparable<NativePhysicsObject>

public class MinkowskiSum
extends ConvexShape

A convex collision shape to represent the Minkowki sum of 2 convex shapes, based on Bullet's btMinkowskiSumShape.

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
MinkowskiSum(ConvexShape shapeA, ConvexShape shapeB)	Instantiate the Minkowki sum of the specified shapes.

Method Summary

Modifier and Type	Method	Description
boolean	canScale(Vector3f scale)	Test whether the specified scale factors can be applied to this shape.
float	getMargin()	Return the collision margin of this shape.
ConvexShape	getShapeA()	Access the first base shape.
ConvexShape	getShapeB()	Access the 2nd base shape.
void	setMargin(float margin)	Alter the collision margin of this shape.

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

isConcave, isConvex, scaledVolume, toHullShape, toSplittableShape

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

aabbCenter, boundingBox, boundingBox, canSplit, getDefaultMargin, getScale, getScaleDp, getShapeType, getShapeType, isContactFilterEnabled, isInfinite, isNonMoving, isPolyhedral, maxRadius, 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

MinkowskiSum

public MinkowskiSum(ConvexShape shapeA,
 ConvexShape shapeB)

Instantiate the Minkowki sum of the specified shapes.

Parameters:

shapeA - the first base shape (not null, convex, alias created)

shapeB - the 2nd base shape (not null, convex, alias created)

Method Details

getShapeA

public ConvexShape getShapeA()

Access the first base shape.

Returns:

the pre-existing shape (not null)

getShapeB

public ConvexShape getShapeB()

Access the 2nd base shape.

Returns:

the pre-existing shape (not null)

canScale

public boolean canScale(Vector3f scale)

Test whether the specified scale factors can be applied to this shape. For MinkowskiSum shapes, scaling must be unity.

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 this shape.

Overrides:

getMargin in class CollisionShape

Returns:

the margin thickness (in physics-space units, ≥0)

setMargin

public void setMargin(float margin)

Alter the collision margin of this shape. This feature is disabled for MinkowskiSum shapes. The margin of a MinkowskiSum is simply the sum of the (native) margins of the base shapes.

Overrides:

setMargin in class CollisionShape

Parameters:

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