com.almasb.fxgl.physics.box2d.collision.broadphase

Interface BroadPhase

All Known Implementing Classes:

DefaultBroadPhaseBuffer

public interface BroadPhase

Field Summary

Fields

Modifier and Type	Field and Description
static int	NULL_PROXY

Method Summary

Modifier and Type	Method and Description
int	createProxy(AABB aabb, Object userData) Create a proxy with an initial AABB.
void	destroyProxy(int proxyId) Destroy a proxy.
void	drawTree(DebugDraw argDraw)
AABB	getFatAABB(int proxyId)
int	getProxyCount() Get the number of proxies.
int	getTreeBalance()
int	getTreeHeight() Get the height of the embedded tree.
float	getTreeQuality()
Object	getUserData(int proxyId)
void	moveProxy(int proxyId, AABB aabb, Vec2 displacement) Call MoveProxy as many times as you like, then when you are done call UpdatePairs to finalized the proxy pairs (for your time step).
void	query(TreeCallback callback, AABB aabb) Query an AABB for overlapping proxies.
void	raycast(TreeRayCastCallback callback, RayCastInput input) Ray-cast against the proxies in the tree.
boolean	testOverlap(int proxyIdA, int proxyIdB)
void	touchProxy(int proxyId)
void	updatePairs(PairCallback callback) Update the pairs.

Field Detail

NULL_PROXY

static final int NULL_PROXY

See Also:

Constant Field Values

Method Detail

createProxy

int createProxy(AABB aabb,
                Object userData)

Create a proxy with an initial AABB. Pairs are not reported until updatePairs is called.

Parameters:

aabb -

userData -

Returns:

destroyProxy

void destroyProxy(int proxyId)

Destroy a proxy. It is up to the client to remove any pairs.

Parameters:

proxyId -

moveProxy

void moveProxy(int proxyId,
               AABB aabb,
               Vec2 displacement)

Call MoveProxy as many times as you like, then when you are done call UpdatePairs to finalized the proxy pairs (for your time step).

touchProxy

void touchProxy(int proxyId)

getUserData

Object getUserData(int proxyId)

getFatAABB

AABB getFatAABB(int proxyId)

testOverlap

boolean testOverlap(int proxyIdA,
                    int proxyIdB)

getProxyCount

int getProxyCount()

Get the number of proxies.

Returns:

drawTree

void drawTree(DebugDraw argDraw)

updatePairs

void updatePairs(PairCallback callback)

Update the pairs. This results in pair callbacks. This can only add pairs.

Parameters:

callback -

query

void query(TreeCallback callback,
           AABB aabb)

Query an AABB for overlapping proxies. The callback class is called for each proxy that overlaps the supplied AABB.

Parameters:

callback -

aabb -

raycast

void raycast(TreeRayCastCallback callback,
             RayCastInput input)

Ray-cast against the proxies in the tree. This relies on the callback to perform a exact ray-cast in the case were the proxy contains a shape. The callback also performs the any collision filtering. This has performance roughly equal to k * log(n), where k is the number of collisions and n is the number of proxies in the tree.

Parameters:

input - the ray-cast input data. The ray extends from p1 to p1 + maxFraction * (p2 - p1).

callback - a callback class that is called for each proxy that is hit by the ray.

getTreeHeight

int getTreeHeight()

Get the height of the embedded tree.

Returns:

getTreeBalance

int getTreeBalance()

getTreeQuality

float getTreeQuality()