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// Copyright (c) 2007-09 INRIA Sophia-Antipolis (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1.1/Point_set_processing_3/include/CGAL/IO/read_off_points.h $
// $Id: include/CGAL/IO/read_off_points.h 08b27d3db14 $
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s) : Pierre Alliez and Laurent Saboret
#ifndef CGAL_POINT_SET_PROCESSING_READ_OFF_POINTS_H
#define CGAL_POINT_SET_PROCESSING_READ_OFF_POINTS_H
#include <CGAL/license/Point_set_processing_3.h>
#include <CGAL/IO/io.h>
#include <CGAL/property_map.h>
#include <CGAL/value_type_traits.h>
#include <CGAL/Origin.h>
#include <CGAL/Kernel_traits.h>
#include <CGAL/iterator.h>
#include <CGAL/type_traits/is_iterator.h>
#include <CGAL/Named_function_parameters.h>
#include <CGAL/boost/graph/named_params_helper.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <type_traits>
namespace CGAL {
namespace IO {
/**
\ingroup PkgPointSetProcessing3IOOff
\brief reads points (positions + normals, if available), using the \ref IOStreamOFF.
\tparam OutputIteratorValueType type of objects that can be put in `PointOutputIterator`.
It must be a model of `DefaultConstructible` and defaults to `value_type_traits<PointOutputIterator>::%type`.
It can be omitted when the default is fine.
\tparam PointOutputIterator iterator over output points.
\tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
\param is input stream
\param output output iterator over points
\param np an optional sequence of \ref bgl_namedparameters "Named Parameters" among the ones listed below
\cgalNamedParamsBegin
\cgalParamNBegin{point_map}
\cgalParamDescription{a property map associating points to the elements of the point range}
\cgalParamType{a model of `WritablePropertyMap` with value type `geom_traits::Point_3`}
\cgalParamDefault{`CGAL::Identity_property_map<geom_traits::Point_3>`}
\cgalParamNEnd
\cgalParamNBegin{normal_map}
\cgalParamDescription{a property map associating normals to the elements of the point range}
\cgalParamType{a model of `WritablePropertyMap` with value type `geom_traits::Vector_3`}
\cgalParamDefault{If this parameter is omitted, normals in the input stream are ignored.}
\cgalParamNEnd
\cgalParamNBegin{geom_traits}
\cgalParamDescription{an instance of a geometric traits class}
\cgalParamType{a model of `Kernel`}
\cgalParamDefault{a \cgal Kernel deduced from the point type, using `CGAL::Kernel_traits`}
\cgalParamNEnd
\cgalNamedParamsEnd
\returns `true` if reading was successful, `false` otherwise.
\sa \ref IOStreamOFF
*/
template <typename OutputIteratorValueType,
typename PointOutputIterator,
typename CGAL_NP_TEMPLATE_PARAMETERS>
bool read_OFF(std::istream& is,
PointOutputIterator output,
const CGAL_NP_CLASS& np = parameters::default_values()
#ifndef DOXYGEN_RUNNING
, std::enable_if_t<CGAL::is_iterator<PointOutputIterator>::value>* = nullptr
#endif
)
{
using parameters::choose_parameter;
using parameters::get_parameter;
typedef Point_set_processing_3::Fake_point_range<OutputIteratorValueType> PointRange;
// basic geometric types
typedef Point_set_processing_3_np_helper<PointRange, CGAL_NP_CLASS> NP_helper;
typedef typename NP_helper::Point_map PointMap;
typedef typename NP_helper::Normal_map NormalMap;
typedef typename NP_helper::Geom_traits Kernel;
typedef typename Kernel::FT FT;
PointMap point_map = NP_helper::get_point_map(np);
NormalMap normal_map = NP_helper::get_normal_map(np);
// value_type_traits is a workaround as back_insert_iterator's value_type is void
// typedef typename value_type_traits<OutputIterator>::type Enriched_point;
typedef OutputIteratorValueType Enriched_point;
typedef typename Kernel::Point_3 Point;
typedef typename Kernel::Vector_3 Vector;
if(!is)
{
std::cerr << "Error: cannot open file" << std::endl;
return false;
}
// scan points
std::string signature;
long pointsCount = 0, facesCount = 0, edgesCount = 0; // number of items in file
int pointsRead = 0; // current number of points read
int lineNumber = 0; // current line number
std::string line;
std::istringstream iss;
while(getline(is,line))
{
iss.clear();
iss.str(line);
// Ignore empty lines and comments
if (line.empty () || line[0] == '#')
continue;
++lineNumber;
// Reads file signature on first line
if (lineNumber == 1)
{
if ( !(iss >> signature) || (signature != "OFF" && signature != "NOFF") )
{
// if wrong file format
std::cerr << "Error line " << lineNumber << " of file (unexpected header)" << std::endl;
return false;
}
}
// Reads number of points on 2nd line
else if (lineNumber == 2)
{
if ( !(iss >> pointsCount >> facesCount >> edgesCount) )
{
std::cerr << "Error line " << lineNumber << " of file (incorrect header format)" << std::endl;
return false;
}
}
// Reads 3D points on next lines
else if (pointsRead < pointsCount)
{
// Reads position + normal...
double x,y,z;
double nx,ny,nz;
if (iss >> IO::iformat(x) >> IO::iformat(y) >> IO::iformat(z))
{
Point point{FT(x), FT(y), FT(z)};
Vector normal = CGAL::NULL_VECTOR;
// ... + normal...
if (iss >> IO::iformat(nx))
{
// In case we could read one number, we expect that there are two more
if(iss >> IO::iformat(ny) >> IO::iformat(nz)){
normal = Vector(FT(nx),FT(ny),FT(nz));
} else {
std::cerr << "Error line " << lineNumber << " of file (incomplete normal coordinates)" << std::endl;
return false;
}
}
else if (signature == "NOFF")
{
std::cerr << "Error line " << lineNumber << " of file (expected normal coordinates)" << std::endl;
return false;
}
Enriched_point pwn;
put(point_map, pwn, point); // point_map[&pwn] = point
put(normal_map, pwn, normal); // normal_map[&pwn] = normal
*output++ = pwn;
++pointsRead;
}
}
}
if(is.eof())
is.clear(is.rdstate() & ~std::ios_base::failbit); // set by getline
return true;
}
/**
\ingroup PkgPointSetProcessing3IOOff
\brief reads points (positions + normals, if available), using the \ref IOStreamOFF.
\tparam OutputIteratorValueType type of objects that can be put in `PointOutputIterator`.
It must be a model of `DefaultConstructible` and defaults to `value_type_traits<PointOutputIterator>::%type`.
It can be omitted when the default is fine.
\tparam PointOutputIterator iterator over output points.
\tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
\param fname input file name
\param output output iterator over points
\param np optional sequence of \ref bgl_namedparameters "Named Parameters" among the ones listed below.
\cgalNamedParamsBegin
\cgalParamNBegin{point_map}
\cgalParamDescription{a property map associating points to the elements of the point range}
\cgalParamType{a model of `WritablePropertyMap` with value type `geom_traits::Point_3`}
\cgalParamDefault{`CGAL::Identity_property_map<geom_traits::Point_3>`}
\cgalParamNEnd
\cgalParamNBegin{normal_map}
\cgalParamDescription{a property map associating normals to the elements of the point range}
\cgalParamType{a model of `WritablePropertyMap` with value type `geom_traits::Vector_3`}
\cgalParamDefault{If this parameter is omitted, normals in the input stream are ignored.}
\cgalParamNEnd
\cgalParamNBegin{geom_traits}
\cgalParamDescription{an instance of a geometric traits class}
\cgalParamType{a model of `Kernel`}
\cgalParamDefault{a \cgal Kernel deduced from the point type, using `CGAL::Kernel_traits`}
\cgalParamNEnd
\cgalNamedParamsEnd
\returns `true` if reading was successful, `false` otherwise.
\sa \ref IOStreamOFF
*/
template <typename OutputIteratorValueType,
typename PointOutputIterator,
typename CGAL_NP_TEMPLATE_PARAMETERS>
bool read_OFF(const std::string& fname,
PointOutputIterator output,
const CGAL_NP_CLASS& np = parameters::default_values()
#ifndef DOXYGEN_RUNNING
, std::enable_if_t<CGAL::is_iterator<PointOutputIterator>::value>* = nullptr
#endif
)
{
std::ifstream is(fname);
return read_OFF<OutputIteratorValueType>(is, output, np);
}
/// \cond SKIP_IN_MANUAL
// variants with default output iterator value type
template <typename OutputIterator,
typename CGAL_NP_TEMPLATE_PARAMETERS>
bool read_OFF(std::istream& is, OutputIterator output, const CGAL_NP_CLASS& np = parameters::default_values(),
std::enable_if_t<CGAL::is_iterator<OutputIterator>::value>* = nullptr)
{
return read_OFF<typename value_type_traits<OutputIterator>::type>(is, output, np);
}
template <typename OutputIterator,typename CGAL_NP_TEMPLATE_PARAMETERS>
bool read_OFF(const std::string& fname, OutputIterator output, const CGAL_NP_CLASS& np = parameters::default_values(),
std::enable_if_t<CGAL::is_iterator<OutputIterator>::value>* = nullptr)
{
std::ifstream is(fname);
return read_OFF<typename value_type_traits<OutputIterator>::type>(is, output, np);
}
/// \endcond
} // namespace IO
#ifndef CGAL_NO_DEPRECATED_CODE
/// \cond SKIP_IN_MANUAL
template <typename OutputIteratorValueType,
typename OutputIterator,
typename PointPMap,
typename NormalPMap,
typename Kernel>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points_and_normals(), please update your code")
bool read_off_points_and_normals(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
PointPMap point_map, ///< property map: value_type of OutputIterator -> Point_3.
NormalPMap normal_map, ///< property map: value_type of OutputIterator -> Vector_3.
const Kernel& /*kernel*/) ///< geometric traits.
{
return IO::read_OFF<OutputIteratorValueType>(is, output,
parameters::point_map(point_map)
.normal_map(normal_map)
.geom_traits(Kernel()));
}
template <typename OutputIterator,
typename PointPMap,
typename NormalPMap,
typename Kernel>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points_and_normals(), please update your code")
bool read_off_points_and_normals(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
PointPMap point_map, ///< property map: value_type of OutputIterator -> Point_3.
NormalPMap normal_map, ///< property map: value_type of OutputIterator -> Vector_3.
const Kernel& kernel) ///< geometric traits.
{
return IO::read_OFF<typename value_type_traits<OutputIterator>::type>(is, output,
parameters::point_map(point_map)
.normal_map(normal_map)
.geom_traits(kernel));
}
template <typename OutputIteratorValueType,
typename OutputIterator,
typename PointPMap,
typename NormalPMap>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points_and_normals(), please update your code")
bool read_off_points_and_normals(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
PointPMap point_map, ///< property map: value_type of OutputIterator -> Point_3.
NormalPMap normal_map) ///< property map: value_type of OutputIterator -> Vector_3.
{
return IO::read_OFF<OutputIteratorValueType>(is, output, parameters::point_map(point_map)
.normal_map(normal_map));
}
template <typename OutputIterator,
typename PointPMap,
typename NormalPMap>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points_and_normals(), please update your code")
bool read_off_points_and_normals(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
PointPMap point_map, ///< property map: value_type of OutputIterator -> Point_3.
NormalPMap normal_map) ///< property map: value_type of OutputIterator -> Vector_3.
{
return IO::read_OFF<typename value_type_traits<OutputIterator>::type>(is, output,
parameters::point_map(point_map)
.normal_map(normal_map));
}
template <typename OutputIteratorValueType,
typename OutputIterator,
typename NormalPMap>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points_and_normals(), please update your code")
bool read_off_points_and_normals(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
NormalPMap normal_map) ///< property map: value_type of OutputIterator -> Vector_3.
{
return IO::read_OFF<OutputIteratorValueType>(is, output, parameters::normal_map(normal_map));
}
template <typename OutputIterator,
typename NormalPMap>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points_and_normals(), please update your code")
bool read_off_points_and_normals(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
NormalPMap normal_map) ///< property map: value_type of OutputIterator -> Vector_3.
{
return IO::read_OFF<typename value_type_traits<OutputIterator>::type>(is, output, parameters::normal_map(normal_map));
}
template <typename OutputIteratorValueType,
typename OutputIterator,
typename PointPMap,
typename Kernel
>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points(), please update your code")
bool read_off_points(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
PointPMap point_map, ///< property map: value_type of OutputIterator -> Point_3.
const Kernel& kernel) ///< geometric traits.
{
return read_off_points<OutputIteratorValueType>(is, output, parameters::point_map(point_map)
.geom_traits(kernel));
}
template <typename OutputIterator,
typename PointPMap,
typename Kernel>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points(), please update your code")
bool read_off_points(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
PointPMap point_map, ///< property map: value_type of OutputIterator -> Point_3.
const Kernel& kernel) ///< geometric traits.
{
return read_off_points<typename value_type_traits<OutputIterator>::type>(is, output,
parameters::point_map(point_map)
.geom_traits (kernel));
}
template <typename OutputIteratorValueType,
typename OutputIterator,
typename PointPMap>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points(), please update your code")
bool read_off_points(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
PointPMap point_map) ///< property map: value_type of OutputIterator -> Point_3.
{
return read_off_points<OutputIteratorValueType>(is, output, parameters::point_map (point_map));
}
template <typename OutputIterator, typename PointPMap>
CGAL_DEPRECATED_MSG("you are using the deprecated V1 API of CGAL::read_off_points(), please update your code")
bool read_off_points(std::istream& is, ///< input stream.
OutputIterator output, ///< output iterator over points.
PointPMap point_map) ///< property map: value_type of OutputIterator -> Point_3.
{
return read_off_points<typename value_type_traits<OutputIterator>::type>(is, output, parameters::point_map(point_map));
}
/// \endcond
template <typename OutputIteratorValueType,
typename OutputIterator,
typename CGAL_NP_TEMPLATE_PARAMETERS>
CGAL_DEPRECATED bool read_off_points(std::istream& is,
OutputIterator output,
const CGAL_NP_CLASS& np = parameters::default_values())
{
return IO::read_OFF(is, output, np);
}
/// \cond SKIP_IN_MANUAL
template <typename OutputIteratorValueType, typename OutputIterator>
CGAL_DEPRECATED bool read_off_points(std::istream& is, OutputIterator output)
{
return IO::read_OFF(is, output);
}
// variant with default output iterator value type
template <typename OutputIterator, typename CGAL_NP_TEMPLATE_PARAMETERS>
CGAL_DEPRECATED bool read_off_points(std::istream& is, OutputIterator output, const CGAL_NP_CLASS& np = parameters::default_values())
{
return IO::read_OFF(is, output, np);
}
/// \endcond
#endif //CGAL_NO_DEPRECATED_CODE
} // namespace CGAL
#endif // CGAL_POINT_SET_PROCESSING_READ_OFF_POINTS_H
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