CGAL 5.5.1 - 3D Surface Subdivision Methods
PTQMask_3 Concept Reference

## 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. More...

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. More...

## ◆ PTQMask_3()

 PTQMask_3::PTQMask_3 ( PolygonMesh * pmesh )

Constructor.

The default vertex point property map is used.

## ◆ 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.