mirror of https://github.com/CGAL/cgal
407 lines
13 KiB
C++
407 lines
13 KiB
C++
// Copyright (c) 2020 GeometryFactory
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//
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// This file is part of CGAL (www.cgal.org);
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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//
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// Author(s) : Andreas Fabri
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// Mael Rouxel-Labbé
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// Maxime Gimeno
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#ifndef CGAL_IO_GOCAD_H
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#define CGAL_IO_GOCAD_H
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#include <CGAL/IO/helpers.h>
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#include <CGAL/IO/io.h>
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#include <CGAL/assertions.h>
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#include <CGAL/Named_function_parameters.h>
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#include <CGAL/boost/graph/named_params_helper.h>
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#include <CGAL/iterator.h>
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#include <CGAL/Kernel_traits.h>
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#include <CGAL/use.h>
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#include <boost/range/value_type.hpp>
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#include <fstream>
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#include <iostream>
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#include <vector>
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#include <type_traits>
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namespace CGAL {
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namespace IO {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Read
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/// \cond SKIP_IN_MANUAL
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template <typename PointRange, typename PolygonRange, typename CGAL_NP_TEMPLATE_PARAMETERS>
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bool read_GOCAD(std::istream& is,
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std::pair<std::string, std::string>& name_and_color,
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PointRange& points,
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PolygonRange& polygons,
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const CGAL_NP_CLASS& np)
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{
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typedef typename boost::range_value<PointRange>::type Point;
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typedef typename boost::range_value<PolygonRange>::type Poly;
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const bool verbose = parameters::choose_parameter(parameters::get_parameter(np, internal_np::verbose), false);
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if(!is)
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{
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if(verbose)
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std::cerr<<"File doesn't exist."<<std::endl;
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return false;
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}
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set_ascii_mode(is); // GOCAD is ASCII only
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int offset = 0;
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std::string s;
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Point p;
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bool vertices_read = false,
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end_read = false;
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std::string line;
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std::size_t nb_gocad=1, //don't read the first one, it is optional anyway.
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nb_end=0;
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while(std::getline(is, line))
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{
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if(line.empty())
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continue;
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std::istringstream iss(line);
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if(!(iss >> s))
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continue; // can't read anything on the line, whitespace only?
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if(s == "TFACE")
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{
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break;
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}
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std::string::size_type idx;
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if((idx = s.find("name")) != std::string::npos)
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{
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std::size_t pos = s.find(":")+1;
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name_and_color.first = s.substr(pos, s.length());
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}
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if((idx = s.find("color")) != std::string::npos)
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{
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std::size_t pos = s.find(":")+1;
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name_and_color.second = s.substr(pos, s.length());
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}
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}
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while(std::getline(is, line))
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{
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if(line.empty())
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continue;
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std::istringstream iss(line);
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if(line.find("GOCAD ") != std::string::npos) //the whitespace matters, it is used to define a gocad type, but not in the coord system keyword, for example.
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nb_gocad++;
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if((line.find("VRTX") != std::string::npos))
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{
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int i;
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if(!(iss >> s >> i >> p))
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{
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if(verbose)
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std::cerr << "error while reading vertex." << std::endl;
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return false;
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}
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if(!vertices_read)
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{
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vertices_read = true;
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offset -= i; // Some files start with index 0 others with 1
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}
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points.push_back(p);
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}
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else if(line[0] == 'T')
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{
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iss >> s;
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if(s != "TRGL")
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continue;
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int i,j,k;
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if(!(iss >> i >> j >> k))
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{
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if(verbose)
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std::cerr << "error while reading triangle." << std::endl;
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return false;
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}
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Poly new_face;
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::CGAL::internal::resize(new_face, 3);
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new_face[0] = offset + i;
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new_face[1] = offset + j;
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new_face[2] = offset + k;
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polygons.push_back(new_face);
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}
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else if(line == "END")
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{
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end_read=true;
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nb_end++;
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}
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}
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if(is.eof())
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is.clear(std::ios::goodbit);
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return end_read && nb_gocad == nb_end && !is.bad();
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}
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/// \endcond
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/*!
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* \ingroup PkgStreamSupportIoFuncsGOCAD
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*
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* \brief reads the content of `is` into `points` and `polygons`, using the \ref IOStreamGocad.
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*
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* \attention The polygon soup is not cleared, and the data from the stream are appended.
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*
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* \tparam PointRange a model of the concepts `RandomAccessContainer` and `BackInsertionSequence`
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* whose value type is the point type
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* \tparam PolygonRange a model of the concepts `SequenceContainer` and `BackInsertionSequence`
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* whose `value_type` is itself a model of the concepts `RandomAccessContainer`
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* and `BackInsertionSequence` whose `value_type` is an unsigned integer type
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* convertible to `std::size_t`
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* \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
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*
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* \param is the input stream
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* \param points points of the soup of polygons
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* \param polygons a range of polygons. Each element in it describes a polygon
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* using the indices of the points in `points`.
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* \param np optional \ref bgl_namedparameters "Named Parameters" described below
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*
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* \cgalNamedParamsBegin
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* \cgalParamNBegin{verbose}
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* \cgalParamDescription{indicates whether output warnings and error messages should be printed or not.}
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* \cgalParamType{Boolean}
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* \cgalParamDefault{`false`}
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* \cgalParamNEnd
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* \cgalNamedParamsEnd
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*
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* \returns `true` if the reading was successful, `false` otherwise.
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*/
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template <typename PointRange, typename PolygonRange, typename CGAL_NP_TEMPLATE_PARAMETERS>
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bool read_GOCAD(std::istream& is,
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PointRange& points,
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PolygonRange& polygons,
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const CGAL_NP_CLASS& np = parameters::default_values()
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#ifndef DOXYGEN_RUNNING
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, std::enable_if_t<internal::is_Range<PolygonRange>::value>* = nullptr
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#endif
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)
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{
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std::pair<std::string, std::string> dummy;
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return read_GOCAD(is, dummy, points, polygons, np);
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}
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/*!
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* \ingroup PkgStreamSupportIoFuncsGOCAD
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*
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* \brief reads the content of the file `fname` into `points` and `polygons`, using the \ref IOStreamGocad.
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*
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* \attention The polygon soup is not cleared, and the data from the file are appended.
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*
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* \tparam PointRange a model of the concepts `RandomAccessContainer` and `BackInsertionSequence`
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* whose value type is the point type
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* \tparam PolygonRange a model of the concepts `SequenceContainer` and `BackInsertionSequence`
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* whose `value_type` is itself a model of the concepts `RandomAccessContainer`
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* and `BackInsertionSequence` whose `value_type` is an unsigned integer type
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* convertible to `std::size_t`
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* \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
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*
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* \param fname the path to the input file
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* \param points points of the soup of polygons
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* \param polygons a range of polygons. Each element in it describes a polygon
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* using the indices of the points in `points`.
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* \param np optional \ref bgl_namedparameters "Named Parameters" described below
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*
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* \cgalNamedParamsBegin
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* \cgalParamNBegin{verbose}
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* \cgalParamDescription{indicates whether output warnings and error messages should be printed or not.}
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* \cgalParamType{Boolean}
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* \cgalParamDefault{`false`}
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* \cgalParamNEnd
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* \cgalNamedParamsEnd
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*
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* \returns `true` if the reading was successful, `false` otherwise.
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*/
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template <typename PointRange, typename PolygonRange, typename CGAL_NP_TEMPLATE_PARAMETERS>
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bool read_GOCAD(const std::string& fname,
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PointRange& points,
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PolygonRange& polygons,
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const CGAL_NP_CLASS& np = parameters::default_values()
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#ifndef DOXYGEN_RUNNING
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, std::enable_if_t<internal::is_Range<PolygonRange>::value>* = nullptr
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#endif
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)
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{
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std::ifstream is(fname);
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CGAL::IO::set_mode(is, CGAL::IO::ASCII);
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std::pair<std::string, std::string> dummy;
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return read_GOCAD(is, dummy, points, polygons, np);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Write
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namespace internal {
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template <typename PointRange,
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typename PolygonRange,
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typename CGAL_NP_TEMPLATE_PARAMETERS>
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bool write_GOCAD(std::ostream& os,
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const char* fname,
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const PointRange& points,
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const PolygonRange& polygons,
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const CGAL_NP_CLASS& np)
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{
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typedef typename boost::range_value<PolygonRange>::type Poly;
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using parameters::choose_parameter;
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using parameters::get_parameter;
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typedef typename CGAL::GetPointMap<PointRange, CGAL_NP_CLASS>::type PointMap;
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PointMap point_map = choose_parameter<PointMap>(get_parameter(np, internal_np::point_map));
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if(!os.good())
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return false;
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set_ascii_mode(os); // GOCAD is ASCII only
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set_stream_precision_from_NP(os, np);
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os << "GOCAD TSurf 1\n"
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"HEADER {\n"
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"name:";
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os << fname << "\n";
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os << "*border:on\n"
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"*border*bstone:on\n"
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"}\n"
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"GOCAD_ORIGINAL_COORDINATE_SYSTEM\n"
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"NAME Default\n"
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"AXIS_NAME \"X\" \"Y\" \"Z\"\n"
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"AXIS_UNIT \"m\" \"m\" \"m\"\n"
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"ZPOSITIVE Elevation\n"
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"END_ORIGINAL_COORDINATE_SYSTEM\n"
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"TFACE\n";
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for(std::size_t i=0, end=points.size(); i<end; ++i)
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os << "VRTX " << i << " " << get(point_map, points[i]) << "\n";
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for(const Poly& poly : polygons)
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{
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os << "TRGL";
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for(const auto& id : poly)
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os << " " << id;
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os<< "\n";
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}
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os << "END" << std::endl;
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return os.good();
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}
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} // namespace internal
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/*!
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* \ingroup PkgStreamSupportIoFuncsGOCAD
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*
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* \brief writes the content of `points` and `polygons` in `os`, using the \ref IOStreamGocad.
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*
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* \tparam PointRange a model of the concept `RandomAccessContainer` whose value type is the point type
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* \tparam PolygonRange a model of the concept `SequenceContainer`
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* whose `value_type` is itself a model of the concept `SequenceContainer`
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* whose `value_type` is an unsigned integer type convertible to `std::size_t`
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* \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
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*
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* \param os the output stream
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* \param points points of the soup of polygons
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* \param polygons a range of polygons. Each element in it describes a polygon
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* using the indices of the points in `points`.
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* \param np optional sequence of \ref bgl_namedparameters "Named Parameters" among the ones listed below
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*
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* \cgalNamedParamsBegin
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* \cgalParamNBegin{stream_precision}
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* \cgalParamDescription{a parameter used to set the precision (i.e. how many digits are generated) of the output stream}
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* \cgalParamType{int}
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* \cgalParamDefault{the precision of the stream `os`}
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* \cgalParamNEnd
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* \cgalNamedParamsEnd
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*
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* \return `true` if the writing was successful, `false` otherwise.
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*/
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template <typename PointRange,
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typename PolygonRange,
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typename CGAL_NP_TEMPLATE_PARAMETERS>
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bool write_GOCAD(std::ostream& os,
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const PointRange& points,
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const PolygonRange& polygons,
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const CGAL_NP_CLASS& np = parameters::default_values()
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#ifndef DOXYGEN_RUNNING
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, std::enable_if_t<internal::is_Range<PolygonRange>::value>* = nullptr
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#endif
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)
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{
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return internal::write_GOCAD(os, "anonymous", points, polygons, np);
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}
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/*!
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* \ingroup PkgStreamSupportIoFuncsGOCAD
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*
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* \brief writes the content of `points` and `polygons` in `fname`, using the \ref IOStreamGocad.
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*
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* \tparam PointRange a model of the concept `RandomAccessContainer` whose value type is the point type
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* \tparam PolygonRange a model of the concept `SequenceContainer`
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* whose `value_type` is itself a model of the concept `SequenceContainer`
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* whose `value_type` is an unsigned integer type convertible to `std::size_t`
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* \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
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*
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* \param fname the path to the output file
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* \param points points of the soup of polygons
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* \param polygons a range of polygons. Each element in it describes a polygon
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* using the indices of the points in `points`.
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* \param np optional sequence of \ref bgl_namedparameters "Named Parameters" among the ones listed below
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*
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* \cgalNamedParamsBegin
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* \cgalParamNBegin{stream_precision}
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* \cgalParamDescription{a parameter used to set the precision (i.e. how many digits are generated) of the output stream}
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* \cgalParamType{int}
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* \cgalParamDefault{`6`}
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* \cgalParamNEnd
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* \cgalNamedParamsEnd
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*
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* \return `true` if the writing was successful, `false` otherwise.
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*/
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template <typename PointRange,
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typename PolygonRange,
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typename CGAL_NP_TEMPLATE_PARAMETERS>
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bool write_GOCAD(const std::string& fname,
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const PointRange& points,
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const PolygonRange& polygons,
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const CGAL_NP_CLASS& np = parameters::default_values()
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#ifndef DOXYGEN_RUNNING
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, std::enable_if_t<internal::is_Range<PolygonRange>::value>* = nullptr
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#endif
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)
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{
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std::ofstream os(fname);
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CGAL::IO::set_mode(os, CGAL::IO::ASCII);
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return internal::write_GOCAD(os, fname.c_str(), points, polygons, np);
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}
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} // namespace IO
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} // namespace CGAL
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#endif // CGAL_IO_GOCAD_H
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