Object
- ContactConstraint<T>

Type Parameters:

T - The PhysicsBody type

All Implemented Interfaces:

Shiftable
```
public final class ContactConstraint<T extends PhysicsBody>
extends Object
implements Shiftable
```
Represents a SolvableContact constraint for each PhysicsBody pair.

Since:

1.0.0

Version:

4.0.0

Author:

William Bittle

Constructor Summary

Constructors
Constructor	Description
`ContactConstraint(CollisionPair<T,BodyFixture> pair)`	Full constructor.
`ContactConstraint(CollisionPair<T,BodyFixture> pair, Manifold manifold, double friction, double restitution)`	Deprecated.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`T`	`getBody(CollisionBody<?> body)`	Returns the body that matches the given body.
`T`	`getBody1()`	Returns the first `PhysicsBody`.
`T`	`getBody2()`	Returns the second `PhysicsBody`.
`CollisionPair<T,BodyFixture>`	`getCollisionPair()`	Returns the `CollisionPair`.
`List<? extends SolvedContact>`	`getContacts()`	Returns the list of `SolvableContact`s.
`BodyFixture`	`getFixture(CollisionBody<?> body)`	Returns the fixture for the body that matches the given body.
`BodyFixture`	`getFixture1()`	Returns the first `PhysicsBody`'s `BodyFixture`.
`BodyFixture`	`getFixture2()`	Returns the second `PhysicsBody`'s `BodyFixture`.
`double`	`getFriction()`	Returns the coefficient of friction for this contact constraint.
`ContactConstraintId`	`getId()`	Deprecated. Deprecated in 4.0.0.
`Vector2`	`getNormal()`	Returns the collision normal.
`T`	`getOtherBody(CollisionBody<?> body)`	Returns the body that does not match the given body.
`BodyFixture`	`getOtherFixture(CollisionBody<?> body)`	Returns the fixture for the body that does not match the given body.
`double`	`getRestitution()`	Returns the coefficient of restitution for this contact constraint.
`Vector2`	`getTangent()`	Returns the collision tangent.
`double`	`getTangentSpeed()`	Returns the surface speed of the contact constraint.
`boolean`	`isEnabled()`	Returns true if this contact constraint is enabled for processing by the collision resolution step.
`boolean`	`isOnIsland()`	Deprecated. Deprecated in 4.0.0.
`boolean`	`isSensor()`	Returns true if this `ContactConstraint` is a sensor.
`void`	`setEnabled(boolean flag)`	Sets the enabled flag.
`void`	`setFriction(double friction)`	Sets the coefficient of friction for this contact constraint.
`void`	`setOnIsland(boolean flag)`	Deprecated. Deprecated in 4.0.0.
`void`	`setRestitution(double restitution)`	Sets the coefficient of restitution for this contact constraint.
`void`	`setSensor(boolean flag)`	Sets this contact constraint to a sensor if flag is true.
`void`	`setTangentSpeed(double speed)`	Sets the target surface speed of the contact constraint.
`void`	`shift(Vector2 shift)`	Translates the object to match the given coordinate shift.
`String`	`toString()`
`void`	`update(Manifold manifold, Settings settings, ContactUpdateHandler handler)`	Updates this `ContactConstraint` with the new `Manifold` information and reports begin, persist, and end events to the handler.

Methods inherited from class Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - ContactConstraint
```
@Deprecated
public ContactConstraint(CollisionPair<T,BodyFixture> pair,
                         Manifold manifold,
                         double friction,
                         double restitution)
```
    Deprecated.
    
    Full constructor.
    
    Parameters:
    
    pair - the pair
    
    manifold - the contact Manifold
    
    friction - the friction for the contact constraint
    
    restitution - the restitution for the contact constraint
  - ContactConstraint
```
public ContactConstraint(CollisionPair<T,BodyFixture> pair)
```
    Full constructor.
    
    Parameters:
    
    pair - the pair
- Method Detail
  - update
```
public void update(Manifold manifold,
                   Settings settings,
                   ContactUpdateHandler handler)
```
    Updates this ContactConstraint with the new Manifold information and reports begin, persist, and end events to the handler.
    
    Parameters:
    
    manifold - the new manifold
    
    settings - the settings
    
    handler - the handler
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - shift
```
public void shift(Vector2 shift)
```
    Description copied from interface: Shiftable
    
    Translates the object to match the given coordinate shift.
    
    Specified by:
    
    shift in interface Shiftable
    
    Parameters:
    
    shift - the amount to shift along the x and y axes
  - getId
```
@Deprecated
public ContactConstraintId getId()
```
    Deprecated.
    Deprecated in 4.0.0. No replacement.
    
    Returns the contact constraint id.
    
    Returns:
    
    ContactConstraintId
  - getNormal
```
public Vector2 getNormal()
```
    Returns the collision normal.
    
    Returns:
    
    Vector2 the collision normal
  - getTangent
```
public Vector2 getTangent()
```
    Returns the collision tangent.
    
    Returns:
    
    Vector2 the collision tangent
  - getContacts
```
public List<? extends SolvedContact> getContacts()
```
    Returns the list of SolvableContacts.
    Modification of the list is permitted.
    
    Returns:
    
    List<SolvableContact> the list of SolvableContacts
  - getCollisionPair
```
public CollisionPair<T,BodyFixture> getCollisionPair()
```
    Returns the CollisionPair.
    
    Returns:
    
    CollisionPair
    
    Since:
    
    4.0.0
  - getBody1
```
public T getBody1()
```
    Returns the first PhysicsBody.
    
    Returns:
    
    PhysicsBody
  - getBody2
```
public T getBody2()
```
    Returns the second PhysicsBody.
    
    Returns:
    
    PhysicsBody
  - getFixture1
```
public BodyFixture getFixture1()
```
    Returns the first PhysicsBody's BodyFixture.
    
    Returns:
    
    BodyFixture the first PhysicsBody's BodyFixture
  - getFixture2
```
public BodyFixture getFixture2()
```
    Returns the second PhysicsBody's BodyFixture.
    
    Returns:
    
    BodyFixture the second PhysicsBody's BodyFixture
  - getBody
```
public T getBody(CollisionBody<?> body)
```
    Returns the body that matches the given body.
    If the given body is neither body1 or body2, null is returned.
    
    Parameters:
    
    body - the body
    
    Returns:
    
    T
  - getFixture
```
public BodyFixture getFixture(CollisionBody<?> body)
```
    Returns the fixture for the body that matches the given body.
    If the given body is neither body1 or body2, null is returned.
    
    Parameters:
    
    body - the body
    
    Returns:
    
    E
  - getOtherBody
```
public T getOtherBody(CollisionBody<?> body)
```
    Returns the body that does not match the given body.
    If the given body is neither body1 or body2, null is returned.
    
    Parameters:
    
    body - the body
    
    Returns:
    
    T
  - getOtherFixture
```
public BodyFixture getOtherFixture(CollisionBody<?> body)
```
    Returns the fixture for the body that does not match the given body.
    If the given body is neither body1 or body2, null is returned.
    
    Parameters:
    
    body - the body
    
    Returns:
    
    E
  - getFriction
```
public double getFriction()
```
    Returns the coefficient of friction for this contact constraint.
    
    Returns:
    
    double
  - setFriction
```
public void setFriction(double friction)
```
    Sets the coefficient of friction for this contact constraint.
    
    Parameters:
    
    friction - the friction; must be 0 or greater
    
    Since:
    
    3.0.2
  - getRestitution
```
public double getRestitution()
```
    Returns the coefficient of restitution for this contact constraint.
    
    Returns:
    
    double
  - setRestitution
```
public void setRestitution(double restitution)
```
    Sets the coefficient of restitution for this contact constraint.
    
    Parameters:
    
    restitution - the restitution; must be zero or greater
    
    Since:
    
    3.0.2
  - isSensor
```
public boolean isSensor()
```
    Returns true if this ContactConstraint is a sensor.
    By default a contact constraint is a sensor if either of the two BodyFixtures are sensor fixtures. This can be overridden using the setSensor(boolean) method.
    
    Returns:
    
    boolean
    
    Since:
    
    1.0.1
  - setSensor
```
public void setSensor(boolean flag)
```
    Sets this contact constraint to a sensor if flag is true.
    A sensor constraint is not solved.
    
    Parameters:
    
    flag - true if this contact constraint should be a sensor
    
    Since:
    
    3.0.2
  - getTangentSpeed
```
public double getTangentSpeed()
```
    Returns the surface speed of the contact constraint.
    This will always be zero unless specified manually. This can be used to set the target velocity at the contact to simulate a conveyor belt type effect.
    
    Returns:
    
    double
    
    Since:
    
    3.0.2
  - setTangentSpeed
```
public void setTangentSpeed(double speed)
```
    Sets the target surface speed of the contact constraint.
    The surface speed, in meters / second, is used to simulate a conveyor belt.
    A value of zero deactivates this feature.
    
    Parameters:
    
    speed - the speed in Meters / Second
    
    Since:
    
    3.0.2
  - setEnabled
```
public void setEnabled(boolean flag)
```
    Sets the enabled flag.
    A value of true would enable the contact to be processed by the collision resolution step. A value of false would disable the processing of this constraint for this step only.
    True by default.
    
    Parameters:
    
    flag - true if the contact should be enabled
    
    Since:
    
    3.3.0
  - isEnabled
```
public boolean isEnabled()
```
    Returns true if this contact constraint is enabled for processing by the collision resolution step.
    
    Returns:
    
    boolean
    
    Since:
    
    3.3.0
  - isOnIsland
```
@Deprecated
public boolean isOnIsland()
```
    Deprecated.
    Deprecated in 4.0.0. No replacement needed.
    
    Returns true if this contact constraint is on an island.
    
    Returns:
    
    boolean
  - setOnIsland
```
@Deprecated
public void setOnIsland(boolean flag)
```
    Deprecated.
    Deprecated in 4.0.0. No replacement needed.
    
    Flags this contact constraint as being on an island.
    
    Parameters:
    
    flag - true if this contact constraint is on an island

Class ContactConstraint<T extends PhysicsBody>

Constructor Summary

Method Summary

Methods inherited from class Object

Constructor Detail

ContactConstraint

ContactConstraint

Method Detail

update

toString

shift

getId

getNormal

getTangent

getContacts

getCollisionPair

getBody1

getBody2

getFixture1

getFixture2

getBody

getFixture

getOtherBody

getOtherFixture

getFriction

setFriction

getRestitution

setRestitution

isSensor

setSensor

getTangentSpeed

setTangentSpeed

setEnabled

isEnabled

isOnIsland

setOnIsland