Dart Documentationbox2d_htmlContactConstraintPoint

ContactConstraintPoint class

class ContactConstraintPoint {
  final Vector localPoint;
  //TODO(gregbglw): Find out what rA and rB mean and change the names.
  final Vector rA;
  final Vector rB;

  num normalImpulse;
  num tangentImpulse;
  num normalMass;
  num tangentMass;
  num velocityBias;

  /** Constructs a new ContactConstraintPoint. */
  ContactConstraintPoint()
    : localPoint = new Vector(),
    rA = new Vector(),
    rB = new Vector(),
    normalImpulse = 0,
    tangentImpulse = 0,
    normalMass = 0,
    tangentMass = 0,
    velocityBias = 0 {}

  /** Sets this point equal to the given point. */
  void setFrom(ContactConstraintPoint cp) {
    localPoint.setFrom(cp.localPoint);
    rA.setFrom(cp.rA);
    rB.setFrom(cp.rB);
    normalImpulse = cp.normalImpulse;
    tangentImpulse = cp.tangentImpulse;
    normalMass = cp.normalMass;
    tangentMass = cp.tangentMass;
    velocityBias = cp.velocityBias;
  }

  String toString() {
    return "normal impulse: $normalImpulse, tangentImpulse: $tangentImpulse"
        ", normalMass: $normalMass, tangentMass: $tangentMass"
        ", velocityBias: $velocityBias, localPoint: $localPoint"
        ", rA: $rA, rB: $rB";
  }
}

Constructors

new ContactConstraintPoint() #

Constructs a new ContactConstraintPoint.

ContactConstraintPoint()
  : localPoint = new Vector(),
  rA = new Vector(),
  rB = new Vector(),
  normalImpulse = 0,
  tangentImpulse = 0,
  normalMass = 0,
  tangentMass = 0,
  velocityBias = 0 {}

Properties

final Vector localPoint #

final Vector localPoint;

num normalImpulse #

num normalImpulse;

num normalMass #

num normalMass;

final Vector rA #

final Vector rA;

final Vector rB #

final Vector rB;

final Type runtimeType #

inherited from Object

A representation of the runtime type of the object.

external Type get runtimeType;

num tangentImpulse #

num tangentImpulse;

num tangentMass #

num tangentMass;

num velocityBias #

num velocityBias;

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

new ContactConstraintPoint() #

Constructs a new ContactConstraintPoint.

ContactConstraintPoint()
  : localPoint = new Vector(),
  rA = new Vector(),
  rB = new Vector(),
  normalImpulse = 0,
  tangentImpulse = 0,
  normalMass = 0,
  tangentMass = 0,
  velocityBias = 0 {}

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();

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();

void setFrom(ContactConstraintPoint cp) #

Sets this point equal to the given point.

void setFrom(ContactConstraintPoint cp) {
  localPoint.setFrom(cp.localPoint);
  rA.setFrom(cp.rA);
  rB.setFrom(cp.rB);
  normalImpulse = cp.normalImpulse;
  tangentImpulse = cp.tangentImpulse;
  normalMass = cp.normalMass;
  tangentMass = cp.tangentMass;
  velocityBias = cp.velocityBias;
}

String toString() #

Returns a string representation of this object.

docs inherited from Object
String toString() {
  return "normal impulse: $normalImpulse, tangentImpulse: $tangentImpulse"
      ", normalMass: $normalMass, tangentMass: $tangentMass"
      ", velocityBias: $velocityBias, localPoint: $localPoint"
      ", rA: $rA, rB: $rB";
}