scene_object_collection.cpp

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/*
 * Copyright (c) 2010, Willow Garage, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Willow Garage, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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#include <rve_common/registry.h>
#include <rve_render_client/scene_object_collection.h>
#include <rve_render_client/scene.h>
#include <rve_render_client/single_scene_object.h>

namespace rve_render_client
{

SceneObjectCollectionPtr createSceneObjectCollection()
{
  SceneObjectCollectionPtr coll(new SceneObjectCollection, destroySceneObject);
  return coll;
}

SceneObjectCollectionPtr createSceneObjectCollection(Scene* scene)
{
  SceneObjectCollectionPtr coll = createSceneObjectCollection();
  scene->addObject(coll.get());
  return coll;
}

void SceneObjectCollection::doCreate(ContextInfo& context)
{
  S_SceneObject::iterator it = objects_.begin();
  S_SceneObject::iterator end = objects_.end();
  for (; it != end; ++it)
  {
    const SceneObjectPtr& obj = *it;
    obj->create(context.scene, context.context);
  }
}

void SceneObjectCollection::doDestroy(ContextInfo& context)
{
  S_SceneObject::iterator it = objects_.begin();
  S_SceneObject::iterator end = objects_.end();
  for (; it != end; ++it)
  {
    const SceneObjectPtr& obj = *it;
    obj->destroy(context.scene, context.context);
  }
}

void SceneObjectCollection::getContextDependencies(V_UUID& deps)
{
  S_SceneObject::iterator it = objects_.begin();
  S_SceneObject::iterator end = objects_.end();
  for (; it != end; ++it)
  {
    const SceneObjectPtr& obj = *it;
    obj->getContextDependencies(deps);
  }
}

void SceneObjectCollection::addObject(const SceneObjectPtr& obj)
{
  if (objects_.insert(obj).second)
  {
    V_ContextInfo::iterator it = getContexts().begin();
    V_ContextInfo::iterator end = getContexts().end();
    for (; it != end; ++it)
    {
      ContextInfo& info = *it;
      obj->create(info.scene, info.context);
    }
  }
}

void SceneObjectCollection::removeObject(const SceneObjectPtr& obj)
{
  S_SceneObject::iterator it = objects_.find(obj);
  if (it != objects_.end())
  {
    V_ContextInfo::iterator cit = getContexts().begin();
    V_ContextInfo::iterator cend = getContexts().end();
    for (; cit != cend; ++cit)
    {
      ContextInfo& info = *cit;
      obj->destroy(info.scene, info.context);
    }

    objects_.erase(it);
  }
}

bool SceneObjectCollection::addToRegistry( rve_common::RegistryPtr registry, rve_common::RegistrantWPtr registrant )
{
  // If this object is already registered somewhere, fail.
  if( registry_.lock() )
  {
    return false;
  }

  // Register all current sub-objects.
  S_SceneObject::iterator it = objects_.begin();
  S_SceneObject::iterator end = objects_.end();
  for (; it != end; ++it)
  {
    const SceneObjectPtr& obj = *it;
    if( !obj->addToRegistry( registry, registrant ))
    {
      return false;
    }
  }

  // Save the registry information so we can register new sub-objects as they are added.
  registry_ = registry;
  registrant_ = registrant;
  return true;
}

bool SceneObjectCollection::removeFromRegistry( rve_common::RegistryPtr registry, rve_common::RegistrantWPtr registrant )
{
  // If this object is not registered, fail.
  rve_common::RegistryPtr reg = registry_.lock();
  if( !reg )
  {
    return false;
  }
  
  // If previously registered with someone else, fail.
  if( reg != registry )
  {
    return false;
  }

  // Register all current sub-objects.
  S_SceneObject::iterator it = objects_.begin();
  S_SceneObject::iterator end = objects_.end();
  for (; it != end; ++it)
  {
    const SceneObjectPtr& obj = *it;
    if( !obj->removeFromRegistry( reg, registrant ))
    {
      return false;
    }
  }

  registry_.reset();
  registrant_.reset();
  return true;
}

} // namespace rve_render_client