Dart Documentationbox2d_htmlFixtureDef

FixtureDef class

A fixture definition is used to create a fixture. You can reuse fixture definitions.

class FixtureDef {
  /**
   * The shape to use in the fixture. This must be set.
   */
  Shape shape;

  /**
   * Use this to store application specific fixture data.
   */
  Object userData;

  /**
   * The friction coefficient, usually in the range [0,1].
   */
  num friction;

  /**
   * The restitution (elasticity) usually in the range [0,1].
   */
  num restitution;

  /**
   * The density, usually in kg/m^2
   */
  num density;

  /**
   * A sensor shape collects contact information but never generates a collision
   * response.
   */
  bool isSensor;

  /**
   * Contact filtering data;
   */
  Filter filter;

  /**
   * Constructs a new FixtureDef with default values.
   */
  FixtureDef() :
    shape = null,
    userData = null,
    friction = 0.2,
    restitution = 0,
    density = 0,
    filter = new Filter(),
    isSensor = false {
    // Setup the filter.
    filter.categoryBits = 0x0001;
    filter.maskBits = 0xFFFF;
    filter.groupIndex = 0;
  }
}

Constructors

new FixtureDef() #

Constructs a new FixtureDef with default values.

FixtureDef() :
  shape = null,
  userData = null,
  friction = 0.2,
  restitution = 0,
  density = 0,
  filter = new Filter(),
  isSensor = false {
  // Setup the filter.
  filter.categoryBits = 0x0001;
  filter.maskBits = 0xFFFF;
  filter.groupIndex = 0;
}

Properties

num density #

The density, usually in kg/m^2

num density;

Filter filter #

Contact filtering data;

Filter filter;

num friction #

The friction coefficient, usually in the range 0,1.

num friction;

bool isSensor #

A sensor shape collects contact information but never generates a collision response.

bool isSensor;

num restitution #

The restitution (elasticity) usually in the range 0,1.

num restitution;

final Type runtimeType #

inherited from Object

A representation of the runtime type of the object.

external Type get runtimeType;

Shape shape #

The shape to use in the fixture. This must be set.

Shape shape;

Object userData #

Use this to store application specific fixture data.

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

new FixtureDef() #

Constructs a new FixtureDef with default values.

FixtureDef() :
  shape = null,
  userData = null,
  friction = 0.2,
  restitution = 0,
  density = 0,
  filter = new Filter(),
  isSensor = false {
  // Setup the filter.
  filter.categoryBits = 0x0001;
  filter.maskBits = 0xFFFF;
  filter.groupIndex = 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();

String toString() #

inherited from Object

Returns a string representation of this object.

external String toString();