CGAL 6.1 - 3D Surface Subdivision Methods

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PTQMask_3 Concept Reference
Reference Manual » Concepts

## Definition

Required member functions for the `PTQMask_3` concept. This policy concept of geometric computations is used in `CGAL::Subdivision_method_3::PTQ<PolygonMesh, Mask, NamedParameters>`.

Refines
  `SubdivisionMask_3`

Has models
  `CGAL::Loop_mask_3<PolygonMesh, VertexPointMap>`

See also
  `CGAL::Subdivision_method_3`

## Types
typedef unspecified_type | PolygonMesh
| The polygon mesh must be triangulated.
typedef unspecified_type | VertexPointMap

## Operations
| PTQMask_3 (PolygonMesh *pmesh)
| Constructor.
| PTQMask_3 (PolygonMesh *pmesh, VertexPointMap vpmap)
| Constructor.
void | edge_node (halfedge_descriptor hd, Point_3 &pt)
| computes the edge-point `pt` based on the neighborhood of the edge `hd`.
void | vertex_node (vertex_descriptor vd, Point_3 &pt)
| computes the vertex-point `pt` based on the neighborhood of the vertex `vd`.
void | border_node (halfedge_descriptor hd, Point_3 &ept, Point_3 &vpt)
| computes the edge-point `ept` and the vertex-point `vpt` based on the neighborhood of the border edge of `hd`.

## Constructor & Destructor Documentation

## ◆ PTQMask_3()

PTQMask_3::PTQMask_3 | ( | PolygonMesh * | pmesh | ) |

Constructor.

The default vertex point property map is used.

## Member Function Documentation

## ◆ border_node()

void PTQMask_3::border_node | ( | halfedge_descriptor | hd,
|  | Point_3 & | ept,
|  | Point_3 & | vpt
| ) |  |

computes the edge-point `ept` and the vertex-point `vpt` based on the neighborhood of the border edge of `hd`.

`hd` is not a border halfedge (its opposite is) and `vpt` corresponds to the target vertex of `hd`.