createFixture method

Fixture createFixture(FixtureDef def)

Creates a fixture and attach it to this body. Use this function if you need to set some fixture parameters, like friction. Otherwise you can create the fixture directly from a shape. If the density is non-zero, this function automatically updates the mass of the body. Contacts are not created until the next time step.

Warning: This function is locked during callbacks.

Implementation

Fixture createFixture(FixtureDef def) {
  assert(!world.isLocked);

  final fixture = Fixture(this, def);

  if ((flags & activeFlag) == activeFlag) {
    final broadPhase = world.contactManager.broadPhase;
    fixture.createProxies(broadPhase, transform);
  }

  fixtures.add(fixture);

  // Adjust mass properties if needed.
  if (fixture.density > 0.0) {
    resetMassData();
  }

  // Let the world know we have a new fixture. This will cause new contacts
  // to be created at the beginning of the next time step.
  world.flags |= World.newFixture;

  return fixture;
}