CGAL 6.1 - 3D Alpha Shapes

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FixedAlphaShapeCell_3 Concept Reference
Reference Manual » Concepts

## Definition

The concept `FixedAlphaShapeCell_3` describes the requirements for the base cell of a alpha shape with a fixed value alpha.

Refines
  `DelaunayTriangulationCellBase_3` if the underlying triangulation of the alpha shape is a Delaunay triangulation
  `RegularTriangulationCellBase_3` if the underlying triangulation of the alpha shape is a regular triangulation
  `Periodic_3TriangulationDSCellBase_3` if the underlying triangulation of the alpha shape is a periodic triangulation

Has models
  `CGAL::Fixed_alpha_shape_cell_base_3` (templated with the appropriate triangulation cell base class)

## Creation
| FixedAlphaShapeCell_3 ()
| default constructor.
| FixedAlphaShapeCell_3 (const Vertex_handle &v0, const Vertex_handle &v1, const Vertex_handle &v2, const Vertex_handle &v3)
| constructor setting the incident vertices.
| FixedAlphaShapeCell_3 (const Vertex_handle &v0, const Vertex_handle &v1, const Vertex_handle &v2, const Vertex_handle &v3, const Cell_handle &n0, const Cell_handle &n1, const Cell_handle &n2, const Cell_handle &n3)
| constructor setting the incident vertices and the neighboring cells.

## Access Functions
Classification_type | get_classification_type ()
| Returns the classification of the cell.
Classification_type | get_facet_classification_type (int i)
| Returns the classification of the i-th facet of the cell.

## Modifiers
void | set_classification_type (Classification_type type)
| Sets the classification of the cell.
void | set_facet_classification_type (int i, Classification_type type)
| Sets the classification of the i-th facet of the cell.