ObjHelper.h

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/*
  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
*/
 
// This file was largely imported from the Acts testing framework
 
#pragma once
 
#include <fstream>
#include <vector>
#include "Acts/Definitions/Algebra.hpp"
 
 
namespace ObjHelper {
 
  struct VtnCounter
  {
    unsigned int vcounter  = 0;
    unsigned int vtcounter = 0;
    unsigned int ncounter  = 0;
  };
 
  void
  writeVTN(std::ofstream&        stream,
           VtnCounter&           vtnCounter,
           double                scalor,
           const Acts::Vector3& vertex,
           const std::string&    vtntype = "v",
           bool                  point   = false);
 
  void
  constructVerticalFaces(std::ofstream&                   stream,
                         unsigned int                     start,
                         const std::vector<unsigned int>& vsides);
 
  void
  writePlanarFace(std::ofstream&                     stream,
                  VtnCounter&                        vtnCounter,
                  double                             scalor,
                  const std::vector<Acts::Vector3>& vertices,
                  double                             thickness = 0.,
                  const std::vector<unsigned int>&   vsides    = {});
 
  void
  writeTube(std::ofstream&           stream,
            VtnCounter&              vtnCounter,
            double                   scalor,
            unsigned int             nSegments,
            const Acts::Transform3& transform,
            double                   r,
            double                   hZ,
            double                   thickness = 0.);
 
}  // enf of namespace