\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)

CGAL 4.8 - 3D Alpha Shapes

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FixedAlphaShapeCell_3 Concept Reference
Concepts

## Definition

This concept describes the requirements for the base cell of a alpha shape with a fixed value alpha.

Refines:
  `TriangulationCellBase_3`

Has Models:
  `CGAL::Fixed_alpha_shape_cell_base_3`

## 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.