CGAL 6.1 - 2D Triangulations

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Functions
Draw a Constrained Triangulation 2
Reference Manual

##

`#include<CGAL/draw_constrained_triangulation_2.h>`

## Functions
template<class CT2 , class InDomainPMap >
void | CGAL::draw (const CT2 &ct2, InDomainPMap ipm)
| opens a new window and draws a constrained triangulation.
template<class CT2 , class InDomainPMap >
void | CGAL::add_to_graphics_scene (const CT2 &ct2, InDomainPMap ipm, CGAL::Graphics_scene &gs)
| adds the vertices, edges and faces of `ct2` into the given graphic scene `gs`.

## Function Documentation

## ◆ add_to_graphics_scene()

template<class CT2 , class InDomainPMap >

void CGAL::add_to_graphics_scene | ( | const CT2 & | ct2,
|  | InDomainPMap | ipm,
|  | CGAL::Graphics_scene & | gs
| ) |  |

`#include <CGAL/draw_constrained_triangulation_2.h>`

adds the vertices, edges and faces of `ct2` into the given graphic scene `gs`.

If the triangulation has constraints they are drawn. The faces inside and outside of the domain, based on the property map, are drawn in different colors. Note that `gs` is not cleared before being filled (to enable to draw several data structures in the same basic viewer).

Template Parameters

  CT2 | which must be an instantiation of a `CGAL::Constrained_triangulation_2<...>`.
  InDomainPMap | a class model of `ReadablePropertyMap` with `CT2::Face_handle` as key type and `bool` as value type.

Parameters

  ct2 | the constrained triangulation to draw.
  ipm | the property map defining the faces which are in the domain.
  gs | the graphic scene to fill.

Advanced

The real declaration of this function template is:

`template<class Gt, class Tds, class Itag, class InDomainPMap>`

`void CGAL::add_to_graphics_scene(const CGAL::Constrained_triangulation_2<Gt, Tds, Itag>& ct2, InDomainPMap ipm, CGAL::Graphics_scene& gs);`

## ◆ draw()

template<class CT2 , class InDomainPMap >

void CGAL::draw | ( | const CT2 & | ct2,
|  | InDomainPMap | ipm
| ) |  |

`#include <CGAL/draw_constrained_triangulation_2.h>`

opens a new window and draws a constrained triangulation.

If the triangulation has constraints they are drawn. The faces inside and outside of the domain, based on the property map, are drawn in different colors.

A call to this function blocks the execution of the program until the drawing window is closed. This function requires `CGAL_Qt6`, and is only available if the macro `CGAL_USE_BASIC_VIEWER` is defined. Linking with the cmake target `CGAL::CGAL_Basic_viewer` will link with `CGAL_Qt6` and add the definition `CGAL_USE_BASIC_VIEWER`.

Template Parameters

  CT2 | which must be an instantiation of a `CGAL::Constrained_triangulation_2<...>`.
  InDomainPMap | a class model of `ReadablePropertyMap` with `CT2::Face_handle` as key type and `bool` as value type.

Parameters

  ct2 | the constrained triangulation to draw.
  ipm | the property map defining the faces which are in the domain.

Advanced

The real declaration of this function template is:

`template<class Gt, class Tds, class Itag, class InDomainPMap>`

`void CGAL::draw(const CGAL::Constrained_triangulation_2<Gt, Tds, Itag>& ct2, InDomainPMap ipm);`