#include "X3dParser.h"


bool
X3dParser::ParseFile(const string filename,
		     SceneGraphNode **root)
{
  
  
  
}

  
namespace X3DTK {
namespace MESH {

MyStructureComputer::MyStructureComputer()
{
  setGraphTraversal(new DFSGraphTraversal());
	setComponentVisitor(new MyStructureComputerCoreVisitor());
      }
      
      MyStructureComputer::~MyStructureComputer()
      {
	Singleton<MyStructureComputerStateVariables>::removeInstance();
      }
      
      MySimpleMesh *MyStructureComputer::compute(SFNode N)
      {
	Singleton<MyStructureComputerStateVariables>::getInstance()->init();
	traverse(N);
	Singleton<MyStructureComputerStateVariables>::getInstance()->finish();
	
	return Singleton<MyStructureComputerStateVariables>::getInstance()->getMesh();
      }
      
      
      MyStructureComputerCoreVisitor::MyStructureComputerCoreVisitor()
      {
	// Enter functions.
	define(Recorder<Mesh>::getEnterFunction(&MyStructureComputerCoreVisitor::enterMesh));
	define(Recorder<Transform>::getEnterFunction(&MyStructureComputerCoreVisitor::enterTransform));
	// Leave function.
	define(Recorder<X3DGroupingNode>::getLeaveFunction(&MyStructureComputerCoreVisitor::leaveX3DGroupingNode));
      }
      
      void MyStructureComputerCoreVisitor::enterMesh(Mesh *M)
      {
	// StateVariables assignation.
	MyStructureComputerStateVariables *stateVariables = Singleton<MyStructureComputerStateVariables>::getInstance();
	
	SFMatrix34f T = stateVariables->getMatrix();

  // Beginning a new Mesh by memorizing the current vertex index.
  stateVariables->beginNewMesh();

  // filling the vertices.
  for (Mesh::MFVertex::const_iterator v = M->getVertices().begin(); v != M->getVertices().end(); ++v)
  {
    SFPoint3f P = T*(*v)->data().getPoint();
    stateVariables->addVertex(P.x, P.y, P.z);
  }
  
  // filling the faces.
  for (Mesh::MFFace::const_iterator
	 f = M->getFaces().begin(); f != M->getFaces().end(); ++f)
  {
    const SFFace::MFEdge &edges = (*f)->getEdges();
    list<unsigned int> indexList;
    for (SFFace::MFEdge::const_iterator e = edges.begin(); e != edges.end(); ++e)
      indexList.push_back((*e)->getFromVertex()->getIndex());
    
    stateVariables->addFace(indexList);
  }
}

void MyStructureComputerCoreVisitor::enterTransform(Transform *T)
{
  Singleton<MyStructureComputerStateVariables>::getInstance()->pushMatrix(T->getTransform());
}

void MyStructureComputerCoreVisitor::leaveX3DGroupingNode(X3DGroupingNode *)
{
  Singleton<MyStructureComputerStateVariables>::getInstance()->popMatrix();
}

: StateVariables(), _mesh(0), _decal(0)
{
}

void MyStructureComputerStateVariables::init()
{
  _mesh = new MySimpleMesh();
  _matrixStack.push_front(SFMatrix34f::identity);
}

void MyStructureComputerStateVariables::finish()
{
  _matrixStack.clear();
}

void MyStructureComputerStateVariables::beginNewMesh()
{
  _decal = _mesh->getVertexArray().size();
}

void MyStructureComputerStateVariables::addFace(const Face &face)
{
  //  MyFace decalFace = face;
  //  for (MyFace::iterator it = decalFace.begin(); it != decalFace.end(); ++it)
  //    *it = _decal + *it;
    
  //  _mesh->addFace(decalFace);
};

void MyStructureComputerStateVariables::pushMatrix(const SFMatrix34f &transformation)
{
  _matrixStack.push_front(_matrixStack.front()*transformation);
}

void MyStructureComputerStateVariables::popMatrix()
{
  _matrixStack.pop_front();
}

}