////  EntityTreeHeadlessViewer.cpp//  libraries/models/src////  Created by Brad Hefta-Gaub on 2/26/14.//  Copyright 2014 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "EntityTreeHeadlessViewer.h"#include "SimpleEntitySimulation.h" EntityTreeHeadlessViewer::EntityTreeHeadlessViewer()    :   OctreeHeadlessViewer(), _simulation(NULL) {} EntityTreeHeadlessViewer::~EntityTreeHeadlessViewer() {} void EntityTreeHeadlessViewer::init() {    OctreeHeadlessViewer::init();    if (!_simulation) {        SimpleEntitySimulation* simpleSimulation = new SimpleEntitySimulation();        EntityTree* entityTree = static_cast<EntityTree*>(_tree);        simpleSimulation->setEntityTree(entityTree);        entityTree->setSimulation(simpleSimulation);        _simulation = simpleSimulation;    }} void EntityTreeHeadlessViewer::update() {    if (_tree) {        EntityTree* tree = static_cast<EntityTree*>(_tree);        if (tree->tryLockForWrite()) {            tree->update();            tree->unlock();        }    }} void EntityTreeHeadlessViewer::processEraseMessage(const QByteArray& dataByteArray, const SharedNodePointer& sourceNode) {    static_cast<EntityTree*>(_tree)->processEraseMessage(dataByteArray, sourceNode);}