#include "../include/animorph/FaceVector.h"

using namespace std;
using namespace Animorph;

bool FaceVector::loadGeometry (const std::string& filename)
{
  FileReader file_reader;

  file_reader.open (filename);

  if (!file_reader)
    return false;

  fromGeometryStream (file_reader);

  return true;
}

bool FaceVector::loadColors (const std::string& filename)
{
  FileReader file_reader;

  file_reader.open (filename);

  if (!file_reader)
    return false;

  fromColorsStream (file_reader);

  return true;
}

void FaceVector::fromGeometryStream (std::ifstream &in_stream)
{
  int nr_faces;

  clear ();

  char buffer[MAX_LINE_BUFFER];
  int v0, v1, v2, v3;

  while (in_stream.getline (buffer, MAX_LINE_BUFFER))
  {
    nr_faces = sscanf (buffer, "%d,%d,%d,%d\n", &v0, &v1, &v2, &v3);

    if (nr_faces == 3)
    {
      push_back(Face(v0, v1, v2));
    }
    else if (nr_faces == 4)
    {
      push_back(Face(v0, v1, v2, v3));
    }
    else
    {
      cerr << "Impossible number of faces: " << nr_faces << endl;
      continue;
    }
  }
}

void FaceVector::fromColorsStream (std::ifstream &in_stream)
{
  int n = 0;
  char buffer[MAX_LINE_BUFFER];
  int mat_index;

  while (in_stream.getline (buffer, MAX_LINE_BUFFER))
  {
    if (sscanf (buffer, "%d\n", &mat_index) == 1)
    {
      try
      {
        Face &face = (*this).at (n);

        face.setMaterialIndex (mat_index);
      }
      catch (const exception &e)
      {
        cerr <<  "Face with number " << n << " doesn't exist!" << endl;
        continue;
      }

      n++;
    }
  }
}