mirror of https://github.com/CGAL/cgal
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
// ============================================================================
|
|
//
|
|
// Copyright (c) 1997 The CGAL Consortium
|
|
//
|
|
// This software and related documentation is part of an INTERNAL release
|
|
// of the Computational Geometry Algorithms Library (CGAL). It is not
|
|
// intended for general use.
|
|
//
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// release : $CGAL_Revision: $
|
|
// release_date : $CGAL_Date: $
|
|
//
|
|
// file : include/CGAL/Polyhedron_copy_3.h
|
|
// package : Polyhedron 2.9 (13 Sep 2000)
|
|
// chapter : 3D-Polyhedral Surfaces
|
|
//
|
|
// revision : $Revision$
|
|
// revision_date : $Date$
|
|
//
|
|
// author(s) : Lutz Kettner <kettner@mpi-sb.mpg.de>)
|
|
// maintainer :
|
|
// coordinator : MPI Saarbruecken
|
|
//
|
|
// Copy of Polyhedral Surfaces.
|
|
// ============================================================================
|
|
|
|
#ifndef CGAL_POLYHEDRON_COPY_3_H
|
|
#define CGAL_POLYHEDRON_COPY_3_H 1
|
|
|
|
#include <CGAL/basic.h>
|
|
#include <CGAL/Modifier_base.h>
|
|
#include <CGAL/Inverse_index.h>
|
|
#include <CGAL/Polyhedron_incremental_builder_3.h>
|
|
|
|
CGAL_BEGIN_NAMESPACE
|
|
|
|
template < class Poly, class HDS >
|
|
class Polyhedron_copy_3 : public Modifier_base<HDS> {
|
|
protected:
|
|
const Poly& source;
|
|
public:
|
|
typedef Poly Polyhedron;
|
|
typedef HDS Halfedge_data_structure;
|
|
Polyhedron_copy_3( const Polyhedron& poly) : source(poly) {}
|
|
// creates the copy modifier and stores the `source' in its
|
|
// internal state.
|
|
void operator()( HDS& target);
|
|
// copies the `source' known from creation time into the `target'.
|
|
// Postcondition: the `target' is a valid polyhedral surface.
|
|
};
|
|
|
|
template < class Poly, class HDS>
|
|
void
|
|
Polyhedron_copy_3<Poly,HDS>:: operator()( HDS& target) {
|
|
typedef typename Poly::Vertex_const_iterator Vertex_const_iterator;
|
|
typedef typename Poly::Facet_const_iterator Facet_const_iterator;
|
|
typedef Inverse_index< Vertex_const_iterator> Index;
|
|
typedef typename HDS::Point Point;
|
|
|
|
target.clear();
|
|
Polyhedron_incremental_builder_3<HDS> B( target);
|
|
B.begin_surface( source.size_of_vertices(),
|
|
source.size_of_facets(),
|
|
source.size_of_halfedges());
|
|
for ( Vertex_const_iterator vi = source.vertices_begin();
|
|
vi != source.vertices_end();
|
|
++vi) {
|
|
B.add_vertex( Point( vi->point()));
|
|
}
|
|
Index index( source.vertices_begin(), source.vertices_end());
|
|
|
|
for ( Facet_const_iterator fi = source.facets_begin();
|
|
fi != source.facets_end();
|
|
++fi) {
|
|
B.begin_facet();
|
|
typedef typename Poly::Halfedge_around_facet_const_circulator
|
|
Halfedge_around_facet_const_circulator;
|
|
Halfedge_around_facet_const_circulator hc = fi->facet_begin();
|
|
Halfedge_around_facet_const_circulator hc_end = hc;
|
|
CGAL_assertion( hc != NULL);
|
|
do {
|
|
B.add_vertex_to_facet( index[ hc->vertex()]);
|
|
++hc;
|
|
} while( hc != hc_end);
|
|
B.end_facet();
|
|
}
|
|
B.end_surface();
|
|
target.normalize_border();
|
|
}
|
|
|
|
CGAL_END_NAMESPACE
|
|
#endif // CGAL_POLYHEDRON_COPY_3_H //
|
|
// EOF //
|