net.java.dev.joode.collision.collider
Class RectangleRectangleCollider

java.lang.Object
  net.java.dev.joode.collision.collider.RectangleRectangleCollider

All Implemented Interfaces:

Collider

public class RectangleRectangleCollider
extends java.lang.Object
implements Collider

Ported from Phys2D The implementation of box to box collision. The create() method is used as a factory to produce the collider instance.

Currently the collider is stateless so a single instance is returned each time. TODO Quite alot of garbage production by this class

Author:

Kevin Glass, ported by Tom Larkworthy

Nested Class Summary

static class

RectangleRectangleCollider.FeaturePair ported from Phys2D, this class was not an inner class, but as only the RectangleCollider seems to use it extensively I have placed it here, though this may need to be moved when more funcionality is ported

Field Summary

static int	EDGE1 The identifier indicating the first edge collides
static int	EDGE2 The identifier indicating the second edge collides
static int	EDGE3 The identifier indicating the third edge collides
static int	EDGE4 The identifier indicating the forth edge collides
static int	FACE_A_X The identifier for the x coordinate of the first face
static int	FACE_A_Y The identifier for the y coordinate of the first face
static int	FACE_B_X The identifier for the x coordinate of the second face
static int	FACE_B_Y The identifier for the y coordinate of the second face
static Collider	INSTANCE
static int	NO_EDGE The identifier indicating no edges collided

Method Summary

int	collide(ContactGeom[] contacts, int contactIndex, Rectangle a, Rectangle b)
int	collide(Geom o1, Geom o2, int flags, ContactGeom[] contact, int contactIndex, int skip)

Methods inherited from class java.lang.Object

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

Field Detail

FACE_A_X

public static final int FACE_A_X

The identifier for the x coordinate of the first face

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Constant Field Values

FACE_A_Y

public static final int FACE_A_Y

The identifier for the y coordinate of the first face

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Constant Field Values

FACE_B_X

public static final int FACE_B_X

The identifier for the x coordinate of the second face

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Constant Field Values

FACE_B_Y

public static final int FACE_B_Y

The identifier for the y coordinate of the second face

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Constant Field Values

NO_EDGE

public static final int NO_EDGE

The identifier indicating no edges collided

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Constant Field Values

EDGE1

public static final int EDGE1

The identifier indicating the first edge collides

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Constant Field Values

EDGE2

public static final int EDGE2

The identifier indicating the second edge collides

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Constant Field Values

EDGE3

public static final int EDGE3

The identifier indicating the third edge collides

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Constant Field Values

EDGE4

public static final int EDGE4

The identifier indicating the forth edge collides

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Constant Field Values

INSTANCE

public static final Collider INSTANCE

Method Detail

collide

public int collide(Geom o1,
                   Geom o2,
                   int flags,
                   ContactGeom[] contact,
                   int contactIndex,
                   int skip)

Specified by:

collide in interface Collider

collide

public int collide(ContactGeom[] contacts,
                   int contactIndex,
                   Rectangle a,
                   Rectangle b)