CGAL 5.6.3 - IO Streams

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Modules | Functions
I/O Functions
I/O Streams Reference

##

## Modules
| STL I/O Functions
| I/O Functions for the STereoLithography (STL) File Format.
| PLY I/O Functions
| I/O Functions for the Polygon File Format (PLY).
| OBJ I/O Functions
| I/O Functions for the Wavefront Advanced Visualizer Object Format (OBJ).
| OFF I/O Functions
| I/O Functions for the Object File Format (OFF).
| VTP I/O Functions
| I/O Functions for the VTK (VTU / VTP) File Formats.
| GOCAD I/O Functions
| I/O Functions for the GOCAD (TS) File Format.
| WKT I/O Functions
| I/O Functions for the Well-Known Text (WKT) File Format.
| 3MF I/O Functions
| I/O Functions for the 3D Manufacturing Format (3MF).

## Functions
template<typename PointRange , typename PolygonRange , typename NamedParameters = CGAL::parameters::Default_named_parameters>
bool | CGAL::IO::read_polygon_soup (const std::string &fname, PointRange &points, PolygonRange &polygons, const NamedParameters &np=parameters::default_values())
| reads a polygon soup from a file.
template<typename PointRange , typename PolygonRange , typename NamedParameters = CGAL::parameters::Default_named_parameters>
bool | CGAL::IO::write_polygon_soup (const std::string &fname, const PointRange &points, const PolygonRange &polygons, const NamedParameters &np=parameters::default_values())
| writes the content of `points` and `polygons` in a file.

## Function Documentation

## ◆ read_polygon_soup()

template<typename PointRange , typename PolygonRange , typename NamedParameters = CGAL::parameters::Default_named_parameters>

bool CGAL::IO::read_polygon_soup | ( | const std::string & | fname,
|  | PointRange & | points,
|  | PolygonRange & | polygons,
|  | const NamedParameters & | np = `parameters::default_values()`
| ) |  |

`#include <CGAL/IO/polygon_soup_io.h>`

reads a polygon soup from a file.

Supported file formats are the following:

- Object File Format (OFF) (`.off`)
- Wavefront Advanced Visualizer Object Format (OBJ) (`.obj`)
- STereoLithography (STL) File Format (`.stl`)
- Polygon File Format (PLY) (`.ply`)
- GOCAD (TS) File Format (`.ts`)
- VTK (VTU / VTP) File Formats (`.vtp`)

The format is detected from the filename extension (letter case is not important).

Template Parameters

  PointRange | a model of the concept `RandomAccessContainer` whose value type is the point type.
  PolygonRange | a model of the concepts `RandomAccessContainer` and `BackInsertionSequence` whose `value_type` is itself a model of the concepts `RandomAccessContainer` and `BackInsertionSequence` whose `value_type` is an unsigned integer type convertible to `std::size_t`
  NamedParameters | a sequence of Named Parameters

Parameters

  fname | the name of the file.
  points | points of the soup of polygons
  polygons | each element in the range describes a polygon using the indices of the vertices.
  np | optional Named Parameters described below

Optional Named Parameters

  indicates whether output warnings and error messages should be printed or not. Type: Boolean Default: `false` |

Returns
  `true` if reading was successful, `false` otherwise.

## ◆ write_polygon_soup()

template<typename PointRange , typename PolygonRange , typename NamedParameters = CGAL::parameters::Default_named_parameters>

bool CGAL::IO::write_polygon_soup | ( | const std::string & | fname,
|  | const PointRange & | points,
|  | const PolygonRange & | polygons,
|  | const NamedParameters & | np = `parameters::default_values()`
| ) |  |

`#include <CGAL/IO/polygon_soup_io.h>`

writes the content of `points` and `polygons` in a file.

Supported file formats are the following:

- Object File Format (OFF) (`.off`)
- Wavefront Advanced Visualizer Object Format (OBJ) (`.obj`)
- STereoLithography (STL) File Format (`.stl`)
- Polygon File Format (PLY) (`.ply`)
- GOCAD (TS) File Format (`.ts`)
- VTK (VTU / VTP) File Formats (`.vtp`)

The format is detected from the filename extension (letter case is not important).

Template Parameters

  PolygonRange | a model of the concept `RandomAccessContainer` whose `value_type` is a model of the concept `RandomAccessContainer` whose `value_type` is `std::size_t`.
  PointRange | a model of the concept `RandomAccessContainer` whose value type is the point type
  NamedParameters | a sequence of Named Parameters

Parameters

  fname | the name of the file.
  points | points of the soup of polygons
  polygons | each element in the range describes a polygon using the indices of the vertices.
  np | optional Named Parameters described below

Optional Named Parameters

  indicates whether output warnings and error messages should be printed or not. Type: Boolean Default: `false` |

Returns
  `true` if writing was successful, `false` otherwise.