Package org.jbox2d.collision

Class Distance.DistanceProxy

java.lang.Object

org.jbox2d.collision.Distance.DistanceProxy

Enclosing class:

Distance

public static class Distance.DistanceProxy
extends Object

A distance proxy is used by the GJK algorithm. It encapsulates any shape. TODO: see if we can just do assignments with vertices, instead of copying stuff over

Author:

Daniel Murphy

Field Summary

Fields

Modifier and Type	Field	Description
final Vec2[]	buffer
int	count
float	radius
final Vec2[]	vertices

Constructor Summary

Constructors

Constructor	Description
DistanceProxy()

Method Summary

Modifier and Type	Method	Description
final int	getSupport(Vec2 d)	Get the supporting vertex index in the given direction.
final Vec2	getSupportVertex(Vec2 d)	Get the supporting vertex in the given direction.
final Vec2	getVertex(int index)	Get a vertex by index.
final int	getVertexCount()	Get the vertex count.
final void	set(Shape shape, int index)	Initialize the proxy using the given shape.

Methods inherited from class java.lang.Object

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

Field Details

vertices

public final Vec2[] vertices

count

public int count

radius

public float radius

buffer

public final Vec2[] buffer

Constructor Details

DistanceProxy

public DistanceProxy()

Method Details

set

public final void set(Shape shape,
 int index)

Initialize the proxy using the given shape. The shape must remain in scope while the proxy is in use.

getSupport

public final int getSupport(Vec2 d)

Get the supporting vertex index in the given direction.

getSupportVertex

public final Vec2 getSupportVertex(Vec2 d)

Get the supporting vertex in the given direction.

getVertexCount

public final int getVertexCount()

Get the vertex count.

getVertex

public final Vec2 getVertex(int index)

Get a vertex by index. Used by Distance.