/usr/include/libqhullcpp/QhullVertex.h is in libqhull-dev 2012.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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**
** Copyright (c) 2008-2012 C.B. Barber. All rights reserved.
** $Id: //main/2011/qhull/src/libqhullcpp/QhullVertex.h#6 $$Change: 1464 $
** $DateTime: 2012/01/25 22:58:41 $$Author: bbarber $
**
****************************************************************************/
#ifndef QHULLVERTEX_H
#define QHULLVERTEX_H
#include "UsingLibQhull.h"
#include "QhullPoint.h"
#include "QhullLinkedList.h"
#include "QhullSet.h"
extern "C" {
#include "libqhull/qhull_a.h"
}
#include <ostream>
namespace orgQhull {
#//ClassRef
class QhullFacetSet;
#//Types
//! QhullVertex -- Qhull's vertex structure, vertexT [libqhull.h], as a C++ class
class QhullVertex;
typedef QhullLinkedList<QhullVertex> QhullVertexList;
typedef QhullLinkedListIterator<QhullVertex> QhullVertexListIterator;
/*********************
topological information:
next,previous doubly-linked list of all vertices
neighborFacets set of adjacent facets (only if qh.VERTEXneighbors)
geometric information:
point array of DIM coordinates
*/
class QhullVertex {
private:
#//Fields
vertexT *qh_vertex;
#//Class objects
static vertexT s_empty_vertex; // needed for shallow copy
public:
#//Constants
#//Constructors
QhullVertex() : qh_vertex(&s_empty_vertex) {}
// Creates an alias. Does not copy QhullVertex. Needed for return by value and parameter passing
QhullVertex(const QhullVertex &o) : qh_vertex(o.qh_vertex) {}
// Creates an alias. Does not copy QhullVertex. Needed for vector<QhullVertex>
QhullVertex &operator=(const QhullVertex &o) { qh_vertex= o.qh_vertex; return *this; }
~QhullVertex() {}
#//Conversion
//Implicit conversion from vertexT
QhullVertex(vertexT *v) : qh_vertex(v ? v : &s_empty_vertex) {}
vertexT *getVertexT() const { return qh_vertex; }
#//QhullSet<QhullVertex>
vertexT *getBaseT() const { return getVertexT(); }
#//getSet
int dimension() const { return (qh_vertex->dim || !isDefined()) ? qh_vertex->dim : UsingLibQhull::globalVertexDimension(); }
int id() const { return qh_vertex->id; }
bool isDefined() const { return qh_vertex != &s_empty_vertex; }
//! True if defineVertexNeighborFacets() already called. Auotomatically set for facet merging, Voronoi diagrams
bool neighborFacetsDefined() const { return qh_vertex->neighbors != 0; }
QhullVertex next() const { return qh_vertex->next; }
bool operator==(const QhullVertex &o) const { return qh_vertex==o.qh_vertex; }
bool operator!=(const QhullVertex &o) const { return !operator==(o); }
QhullPoint point() const { return QhullPoint(dimension(), qh_vertex->point); }
QhullVertex previous() const { return qh_vertex->previous; }
#//ForEach
//See also QhullVertexList
QhullFacetSet neighborFacets() const;
#//IO
struct PrintVertex{
const QhullVertex *vertex;
int run_id;
PrintVertex(int qhRunId, const QhullVertex &v) : vertex(&v), run_id(qhRunId) {}
};//PrintVertex
PrintVertex print(int qhRunId) const { return PrintVertex(qhRunId, *this); }
};//class QhullVertex
}//namespace orgQhull
#//GLobal
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullVertex::PrintVertex &pr);
inline std::ostream &operator<<(std::ostream &os, const orgQhull::QhullVertex &v) { os << v.print(orgQhull::UsingLibQhull::NOqhRunId); return os; }
#endif // QHULLVERTEX_H
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