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)  
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  | FixedAlphaShapeCell_3 () | 
|   | default constructor. 
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  | FixedAlphaShapeCell_3 (const Vertex_handle &v0, const Vertex_handle &v1, const Vertex_handle &v2, const Vertex_handle &v3) | 
|   | constructor setting the incident vertices. 
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  | 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. 
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Classification_type  | get_classification_type () | 
|   | Returns the classification of the cell. 
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Classification_type  | get_facet_classification_type (int i) | 
|   | Returns the classification of the i-th facet of the cell. 
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void  | set_classification_type (Classification_type type) | 
|   | Sets the classification of the cell. 
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void  | set_facet_classification_type (int i, Classification_type type) | 
|   | Sets the classification of the i-th facet of the cell. 
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