parser.h

#pragma once 
#include "vec3.h"
#include "triangle.h"
#include "scene.h"
#include <iostream>
#include <fstream>
#include <string>


using namespace std;

void read_file(string filename, float size,Vec3<float> pos, Triangle triangles[]){

  string buff;
  ifstream file (filename);

  if (file.is_open()){

    getline(file, buff); // OFF

    int nb_vertices, nb_triangles;
    char delim_space=' ';
    char delim_endline='\n';

    getline(file,buff, delim_space); 
    nb_vertices = stoi(buff);
    getline(file,buff, delim_space); 
    nb_triangles = stoi(buff);
    getline(file,buff, delim_endline);  // nb_edges


    Vec3<float> vertices[nb_vertices];

    for(int i = 0; i < nb_vertices; i++){

      getline(file, buff, delim_space);
      float x = stof(buff) * (float) size + pos.x;
      getline(file, buff, delim_space);
      float y = stof(buff) * (float) size + pos.y;
      getline(file, buff, delim_endline);
      float z = stof(buff) * (float) size + pos.z;

      vertices[i] = {x, y, z};  
      // DEBUG     
      // std::cout << vertices[i] << std::endl; 

    }

    for( int j = 0; j < nb_triangles; j++){

      Triangle triangle;

      getline(file, buff, delim_space); // 3

      getline(file, buff, delim_space);
      triangle.a = vertices[stoi(buff)];
      getline(file, buff, delim_space);
      triangle.b = vertices[stoi(buff)];
      getline(file, buff, delim_endline);
      triangle.c = vertices[stoi(buff)];

      triangle.color = {0, 1, 1};

      triangles[j] = triangle;

     }
    file.close();

  }

}

string read_buff_str(ifstream file, string buff, char delim){
  buff = "";
  getline(file, buff, delim);
  return buff;
}