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/****************************************************************************
**
** Copyright (c) 2008-2015 C.B. Barber. All rights reserved.
** $Id: //main/2015/qhull/src/libqhullcpp/QhullVertex.h#4 $$Change: 2079 $
** $DateTime: 2016/02/07 17:43:34 $$Author: bbarber $
**
****************************************************************************/
#ifndef QHULLVERTEX_H
#define QHULLVERTEX_H
#include "libqhull_r/qhull_ra.h"
#include "libqhullcpp/QhullPoint.h"
#include "libqhullcpp/QhullLinkedList.h"
#include "libqhullcpp/QhullSet.h"
#include <ostream>
namespace orgQhull {
#//!\name Used here
class QhullFacetSet;
#//!\name Defined here
//! QhullVertex -- Qhull's vertex structure, vertexT [libqhull_r.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 {
#//!\name Defined here
public:
typedef vertexT * base_type; // for QhullVertexSet
private:
#//!\name Fields
vertexT * qh_vertex; //!< Corresponding vertexT, never 0
QhullQh * qh_qh; //!< QhullQh/qhT for vertexT, may be 0
#//!\name Class objects
static vertexT s_empty_vertex; // needed for shallow copy
public:
#//!\name Constants
#//!\name Constructors
QhullVertex() : qh_vertex(&s_empty_vertex), qh_qh(0) {}
explicit QhullVertex(const Qhull &q);
QhullVertex(const Qhull &q, vertexT *v);
explicit QhullVertex(QhullQh *qqh) : qh_vertex(&s_empty_vertex), qh_qh(qqh) {}
QhullVertex(QhullQh *qqh, vertexT *v) : qh_vertex(v ? v : &s_empty_vertex), qh_qh(qqh) {}
// Creates an alias. Does not copy QhullVertex. Needed for return by value and parameter passing
QhullVertex(const QhullVertex &other) : qh_vertex(other.qh_vertex), qh_qh(other.qh_qh) {}
// Creates an alias. Does not copy QhullVertex. Needed for vector<QhullVertex>
QhullVertex & operator=(const QhullVertex &other) { qh_vertex= other.qh_vertex; qh_qh= other.qh_qh; return *this; }
~QhullVertex() {}
#//!\name GetSet
int dimension() const { return (qh_qh ? qh_qh->hull_dim : 0); }
vertexT * getBaseT() const { return getVertexT(); } //!< For QhullSet<QhullVertex>
vertexT * getVertexT() const { return qh_vertex; }
countT id() const { return qh_vertex->id; }
bool isValid() const { return (qh_qh && 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 QhullVertex(qh_qh, qh_vertex->next); }
bool operator==(const QhullVertex &other) const { return qh_vertex==other.qh_vertex; }
bool operator!=(const QhullVertex &other) const { return !operator==(other); }
QhullPoint point() const { return QhullPoint(qh_qh, qh_vertex->point); }
QhullVertex previous() const { return QhullVertex(qh_qh, qh_vertex->previous); }
QhullQh * qh() const { return qh_qh; }
#//!\name foreach
//See also QhullVertexList
QhullFacetSet neighborFacets() const;
#//!\name IO
struct PrintVertex{
const QhullVertex *vertex;
const char * print_message; //!< non-null message
PrintVertex(const char *message, const QhullVertex &v) : vertex(&v), print_message(message) {}
};//PrintVertex
PrintVertex print(const char *message) const { return PrintVertex(message, *this); }
};//class QhullVertex
}//namespace orgQhull
#//!\name 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(""); return os; }
#endif // QHULLVERTEX_H
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