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QhullFacet.h
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QhullFacet.h
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/****************************************************************************
**
** Copyright (c) 2008-2015 C.B. Barber. All rights reserved.
** $Id: //main/2011/qhull/src/libqhullpcpp/QhullFacet.h#3 $$Change: 1810 $
** $DateTime: 2015/01/17 18:28:15 $$Author: bbarber $
**
****************************************************************************/
#ifndef QHULLFACET_H
#define QHULLFACET_H
#include "Coordinates.h"
#include "QhullHyperplane.h"
#include "QhullPoint.h"
#include "QhullSet.h"
#include "QhullPointSet.h"
extern "C" {
#include "libqhull/qhull_a.h"
}
#include <string>
#include <vector>
#include <ostream>
namespace orgQhull {
#//!\name ClassRef
class QhullFacetSet;
class QhullRidge;
typedef QhullSet<QhullRidge> QhullRidgeSet;
class QhullVertex;
class QhullVertexSet;
#//!\name Types
//! QhullFacet -- Qhull's facet structure, facetT [libqhull.h], as a C++ class
class QhullFacet;
//! A QhullFacet is the C++ equivalent to Qhull's facetT*
class QhullFacet {
private:
#//!\name Fields -- no additions (QhullFacetSet of facetT*)
facetT * qh_facet; //! May be 0 (!isDefined) for corner cases (e.g., *facetSet.end()==0) and tricoplanarOwner()
#//!\name Class objects
static facetT s_empty_facet; // needed for shallow copy
public:
#//!\name Constants
#//!\name Constructors
QhullFacet() : qh_facet(&s_empty_facet) {}
// Creates an alias. Does not copy QhullFacet. Needed for return by value and parameter passing
QhullFacet(const QhullFacet &o) : qh_facet(o.qh_facet ? o.qh_facet : &s_empty_facet) {}
// Creates an alias. Does not copy QhullFacet. Needed for vector<QhullFacet>
QhullFacet & operator=(const QhullFacet &o) { qh_facet= o.qh_facet ? o.qh_facet : &s_empty_facet; return *this; }
~QhullFacet() {}
#//!\name Conversion
//Implicit conversion from facetT
QhullFacet(facetT *f) : qh_facet(f ? f : &s_empty_facet) {}
// Do not define facetT(). It conflicts with return type facetT*
facetT * getFacetT() const { return qh_facet; }
#//!\name QhullSet<QhullFacet>
facetT * getBaseT() const { return getFacetT(); }
#//!\name getSet
int dimension() const;
QhullPoint getCenter(int qhRunId) { return getCenter(qhRunId, qh_PRINTpoints); }
QhullPoint getCenter(int qhRunId, qh_PRINT printFormat);
QhullHyperplane hyperplane() const { return QhullHyperplane(dimension(), qh_facet->normal, qh_facet->offset); }
int id() const { return qh_facet ? qh_facet->id : -1; }
QhullHyperplane innerplane(int qhRunId) const;
bool isDefined() const { return qh_facet && qh_facet != &s_empty_facet; }
bool isGood() const { return qh_facet && qh_facet->good; }
bool isSimplicial() const { return qh_facet->simplicial; }
bool isTopOrient() const { return qh_facet->toporient; }
bool isTriCoplanar() const { return qh_facet->tricoplanar; }
bool isUpperDelaunay() const { return qh_facet->upperdelaunay; }
QhullFacet next() const { return qh_facet->next; }
bool operator==(const QhullFacet &o) const { return qh_facet==o.qh_facet; }
bool operator!=(const QhullFacet &o) const { return !operator==(o); }
QhullHyperplane outerplane(int qhRunId) const;
QhullFacet previous() const { return qh_facet->previous; }
QhullFacet tricoplanarOwner() const;
QhullPoint voronoiVertex(int qhRunId);
#//!\name value
//! Undefined if c.size() != dimension()
double distance(const Coordinates &c) const { return distance(c.data()); }
double distance(const pointT *p) const { return distance(QhullPoint(dimension(), const_cast<coordT *>(p))); }
double distance(const QhullPoint &p) const { return hyperplane().distance(p); }
double facetArea(int qhRunId);
#//!\name foreach
// Can not inline. Otherwise circular reference
QhullPointSet coplanarPoints() const;
QhullFacetSet neighborFacets() const;
QhullPointSet outsidePoints() const;
QhullRidgeSet ridges() const;
QhullVertexSet vertices() const;
#//!\name IO
struct PrintCenter{
QhullFacet * facet; // non-const due to facet.center()
const char * message;
int run_id;
qh_PRINT print_format;
PrintCenter(int qhRunId, QhullFacet &f, qh_PRINT printFormat, const char * s) : facet(&f), message(s), run_id(qhRunId), print_format(printFormat){}
};//PrintCenter
PrintCenter printCenter(int qhRunId, qh_PRINT printFormat, const char *message) { return PrintCenter(qhRunId, *this, printFormat, message); }
struct PrintFacet{
QhullFacet * facet; // non-const due to f->center()
int run_id;
PrintFacet(int qhRunId, QhullFacet &f) : facet(&f), run_id(qhRunId) {}
};//PrintFacet
PrintFacet print(int qhRunId) { return PrintFacet(qhRunId, *this); }
struct PrintFlags{
const QhullFacet *facet;
const char * message;
PrintFlags(const QhullFacet &f, const char *s) : facet(&f), message(s) {}
};//PrintFlags
PrintFlags printFlags(const char *message) const { return PrintFlags(*this, message); }
struct PrintHeader{
QhullFacet * facet; // non-const due to f->center()
int run_id;
PrintHeader(int qhRunId, QhullFacet &f) : facet(&f), run_id(qhRunId) {}
};//PrintHeader
PrintHeader printHeader(int qhRunId) { return PrintHeader(qhRunId, *this); }
struct PrintRidges{
const QhullFacet *facet;
int run_id;
PrintRidges(int qhRunId, QhullFacet &f) : facet(&f), run_id(qhRunId) {}
};//PrintRidges
PrintRidges printRidges(int qhRunId) { return PrintRidges(qhRunId, *this); }
};//class QhullFacet
}//namespace orgQhull
#//!\name Global
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintCenter &pr);
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintFlags &pr);
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintHeader &pr);
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintRidges &pr);
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintFacet &pr);
std::ostream &operator<<(std::ostream &os, orgQhull::QhullFacet &f); // non-const due to qh_getcenter()
#endif // QHULLFACET_H

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