lib/Fixture.js
function FixtureProxy(fixture, childIndex) {
  this.aabb = new AABB();
  this.fixture = fixture;
  this.childIndex = childIndex;
  this.proxyId;
}
function FixtureProxy(fixture, childIndex) {
  this.aabb = new AABB();
  this.fixture = fixture;
  this.childIndex = childIndex;
  this.proxyId;
}
function FixtureProxy ( fixture , childIndex ) { this . aabb = new AABB ( ) ; this . fixture = fixture ; this . childIndex = childIndex ; this . proxyId ; }
This proxy is used internally to connect shape children to the broad-phase.
This proxy is used internally to connect shape children to the broad - phase .