Dart Documentationbox2d_htmlConstantVolumeJointDef

ConstantVolumeJointDef class

Definition for a ConstantVolumeJoint, which connects a group a bodies together so they maintain a constant volume within them.

class ConstantVolumeJointDef extends JointDef {
  num frequencyHz;
  num dampingRatio;

  List<Body> bodies;
  List<DistanceJoint> joints;

  ConstantVolumeJointDef() :
    super(),
    bodies = new List<Body>(),
    joints = null,
    frequencyHz = 0.0,
    dampingRatio = 0.0 {
    type = JointType.CONSTANT_VOLUME;
    collideConnected = false;
  }

  /**
   * Adds a body to the group.
   */
  void addBody(Body argBody) {
    bodies.add(argBody);
    if (bodies.length == 1) {
      bodyA = argBody;
    } else if (bodies.length == 2) {
      bodyB = argBody;
    }
  }

  /**
   * Adds a body and the pre-made distance joint.  Should only
   * be used for deserialization.
   */
  void addBodyAndJoint(Body argBody, DistanceJoint argJoint) {
    addBody(argBody);
    if(joints == null){
      joints = new List<DistanceJoint>();
    }
    joints.add(argJoint);
  }
}

Extends

JointDef > ConstantVolumeJointDef

Constructors

new ConstantVolumeJointDef() #

ConstantVolumeJointDef() :
  super(),
  bodies = new List<Body>(),
  joints = null,
  frequencyHz = 0.0,
  dampingRatio = 0.0 {
  type = JointType.CONSTANT_VOLUME;
  collideConnected = false;
}

Properties

List<Body> bodies #

List<Body> bodies;

Body bodyA #

inherited from JointDef

The first attached body.

Body bodyA;

Body bodyB #

inherited from JointDef

The second attached body.

Body bodyB;

bool collideConnected #

inherited from JointDef

Set this flag to true if the attached bodies should collide.

bool collideConnected;

num dampingRatio #

num dampingRatio;

num frequencyHz #

num frequencyHz;

List<DistanceJoint> joints #

List<DistanceJoint> joints;

final Type runtimeType #

inherited from Object

A representation of the runtime type of the object.

external Type get runtimeType;

int type #

inherited from JointDef

The joint type is set automatically for concrete joint types.

int type;

Object userData #

inherited from JointDef

Use this to attach application specific data to your joints.

Object userData;

Operators

bool operator ==(other) #

inherited from Object

The equality operator.

The default behavior for all Objects is to return true if and only if this and other are the same object.

If a subclass overrides the equality operator it should override the hashCode method as well to maintain consistency.

bool operator ==(other) => identical(this, other);

Methods

void addBody(Body argBody) #

Adds a body to the group.

void addBody(Body argBody) {
  bodies.add(argBody);
  if (bodies.length == 1) {
    bodyA = argBody;
  } else if (bodies.length == 2) {
    bodyB = argBody;
  }
}

void addBodyAndJoint(Body argBody, DistanceJoint argJoint) #

Adds a body and the pre-made distance joint. Should only be used for deserialization.

void addBodyAndJoint(Body argBody, DistanceJoint argJoint) {
  addBody(argBody);
  if(joints == null){
    joints = new List<DistanceJoint>();
  }
  joints.add(argJoint);
}

new ConstantVolumeJointDef() #

ConstantVolumeJointDef() :
  super(),
  bodies = new List<Body>(),
  joints = null,
  frequencyHz = 0.0,
  dampingRatio = 0.0 {
  type = JointType.CONSTANT_VOLUME;
  collideConnected = false;
}

int hashCode() #

inherited from Object

Get a hash code for this object.

All objects have hash codes. Hash codes are guaranteed to be the same for objects that are equal when compared using the equality operator ==. Other than that there are no guarantees about the hash codes. They will not be consistent between runs and there are no distribution guarantees.

If a subclass overrides hashCode it should override the equality operator as well to maintain consistency.

external int hashCode();

new JointDef() #

inherited from JointDef
JointDef() :
  type = JointType.UNKNOWN,
  userData = null,
  bodyA = null,
  bodyB = null,
  collideConnected = false { }

noSuchMethod(String name, List args) #

inherited from Object

noSuchMethod is invoked when users invoke a non-existant method on an object. The name of the method and the arguments of the invocation are passed to noSuchMethod. If noSuchMethod returns a value, that value becomes the result of the original invocation.

The default behavior of noSuchMethod is to throw a noSuchMethodError.

external Dynamic noSuchMethod(String name, List args);

const Object() #

inherited from Object

Creates a new Object instance.

Object instances have no meaningful state, and are only useful through their identity. An Object instance is equal to itself only.

const Object();

String toString() #

inherited from Object

Returns a string representation of this object.

external String toString();