X:/dropbox/visualizationlibrary/src/vlGraphics/SceneManager.cpp

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/*  Visualization Library                                                             */
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/*  Copyright (c) 2005-2010, Michele Bosi                                             */
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#include <vlGraphics/SceneManager.hpp>
#include <vlGraphics/Actor.hpp>
#include <vlGraphics/Camera.hpp>
#include <vlGraphics/Effect.hpp>
#include <vlGraphics/Scissor.hpp>
#include <vlGraphics/Texture.hpp>
#include <vlCore/Image.hpp>

using namespace vl;

//-----------------------------------------------------------------------------
SceneManager::SceneManager()
{
  VL_DEBUG_SET_OBJECT_NAME()
  // mActors = new ActorCollection;
  mBoundsDirty = true;
  mCullingEnabled = true;
  mEnableMask = 0xFFFFFFFF;
}
//-----------------------------------------------------------------------------
void SceneManager::computeBounds()
{
  ActorCollection actors;
  extractActors(actors);

  AABB bbox;
  bbox.setNull();
  for(int i=0; i<actors.size(); ++i)
  {
    actors.at(i)->computeBounds();
    bbox += actors.at(i)->boundingBox();
  }
  setBoundingBox(bbox);

  // better method
  Sphere sphere;
  real radius = real(-1.0);
  for(int i=0; i<actors.size(); ++i)
  {
    if (actors.at(i)->boundingSphere().isNull())
      continue;
    real r = (actors.at(i)->boundingSphere().center() - boundingBox().center()).length() + actors.at(i)->boundingSphere().radius();
    if (r > radius)
      radius = r;
  }
  sphere.setCenter(boundingBox().center());
  sphere.setRadius(radius);
  setBoundingSphere(sphere);

  setBoundsDirty(false);
}
//-----------------------------------------------------------------------------
bool SceneManager::isEnabled(Actor*a) const 
{ 
  return (a->enableMask() & enableMask()) != 0; 
}
//-----------------------------------------------------------------------------