#include "SceneGraph.h"
#include "Exporter.h"
#include "UnigraphicsParser.h"
#include "Preprocessor.h"



  
bool
Preprocessor::LoadViewcells(const string filename)
{
  
  return true;
}

bool
Preprocessor::GenerateViewcells()
{
  
  return true;
}

bool
Preprocessor::LoadScene(const string filename)
{
  // use leaf nodes of the original spatial hiearrchy as occludees

  mSceneGraph = new SceneGraph;
  Parser *parser = new UnigraphicsParser;
  bool result = parser->ParseFile(filename, &mSceneGraph->mRoot);
  
  return result;
}

bool
Preprocessor::ExportPreprocessedData(const string filename)
{
  return false;
}

bool
Preprocessor::BuildKdTree()
{
  mKdTree = new KdTree;
  // add mesh instances of the scene graph to the root of the tree
  KdLeaf *root = (KdLeaf *)mKdTree->GetRoot();
  mSceneGraph->CollectMeshInstaces(&root->mObjects);
  
  mKdTree->Construct();
  return true;
}


void
Preprocessor::KdTreeStatistics(ostream &s)
{
  s<<mKdTree->GetStatistics();
}


bool
Preprocessor::Export( const string filename,
		      const bool scene,
		      const bool kdtree
		      )
{
  Exporter *exporter = Exporter::GetExporter(filename);

  if (exporter) {
    if (scene)
      exporter->ExportScene(mSceneGraph->mRoot);

    if (kdtree) {
      exporter->SetWireframe();
      exporter->ExportKdTree(*mKdTree);
    }

    delete exporter;
    return true;
  }

  return false;
}