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QhullVertexSet.cpp
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Thu, Sep 5, 17:55

QhullVertexSet.cpp
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/****************************************************************************
**
** Copyright (c) 2009-2015 C.B. Barber. All rights reserved.
** $Id: //main/2015/qhull/src/libqhullcpp/QhullVertexSet.cpp#3 $$Change: 2066 $
** $DateTime: 2016/01/18 19:29:17 $$Author: bbarber $
**
****************************************************************************/
#//! QhullVertexSet -- Qhull's linked Vertexs, as a C++ class
#include "libqhullcpp/QhullVertexSet.h"
#include "libqhullcpp/QhullVertex.h"
#include "libqhullcpp/QhullPoint.h"
#include "libqhullcpp/QhullRidge.h"
#include "libqhullcpp/QhullVertex.h"
#include "libqhullcpp/Qhull.h"
using std::string;
using std::vector;
#ifdef _MSC_VER // Microsoft Visual C++ -- warning level 4
#pragma warning( disable : 4611) /* interaction between '_setjmp' and C++ object destruction is non-portable */
/* setjmp should not be implemented with 'catch' */
#endif
namespace orgQhull {
QhullVertexSet::
QhullVertexSet(const Qhull &q, facetT *facetlist, setT *facetset, bool allfacets)
: QhullSet<QhullVertex>(q.qh(), 0)
, qhsettemp_defined(false)
{
QH_TRY_(q.qh()){ // no object creation -- destructors skipped on longjmp()
setT *vertices= qh_facetvertices(q.qh(), facetlist, facetset, allfacets);
defineAs(vertices);
qhsettemp_defined= true;
}
q.qh()->NOerrexit= true;
q.qh()->maybeThrowQhullMessage(QH_TRY_status);
}//QhullVertexSet facetlist facetset
//! Return tempory QhullVertexSet of vertices for a list and/or a set of facets
//! Sets qhsettemp_defined (disallows copy constructor and assignment to prevent double-free)
QhullVertexSet::
QhullVertexSet(QhullQh *qqh, facetT *facetlist, setT *facetset, bool allfacets)
: QhullSet<QhullVertex>(qqh, 0)
, qhsettemp_defined(false)
{
QH_TRY_(qh()){ // no object creation -- destructors skipped on longjmp()
setT *vertices= qh_facetvertices(qh(), facetlist, facetset, allfacets);
defineAs(vertices);
qhsettemp_defined= true;
}
qh()->NOerrexit= true;
qh()->maybeThrowQhullMessage(QH_TRY_status);
}//QhullVertexSet facetlist facetset
//! Copy constructor for argument passing and returning a result
//! Only copies a pointer to the set.
//! Throws an error if qhsettemp_defined, otherwise have a double-free
//!\todo Convert QhullVertexSet to a shared pointer with reference counting
QhullVertexSet::
QhullVertexSet(const QhullVertexSet &other)
: QhullSet<QhullVertex>(other)
, qhsettemp_defined(false)
{
if(other.qhsettemp_defined){
throw QhullError(10077, "QhullVertexSet: Cannot use copy constructor since qhsettemp_defined (e.g., QhullVertexSet for a set and/or list of QhFacet). Contains %d vertices", other.count());
}
}//copy constructor
//! Copy assignment only copies a pointer to the set.
//! Throws an error if qhsettemp_defined, otherwise have a double-free
QhullVertexSet & QhullVertexSet::
operator=(const QhullVertexSet &other)
{
QhullSet<QhullVertex>::operator=(other);
qhsettemp_defined= false;
if(other.qhsettemp_defined){
throw QhullError(10078, "QhullVertexSet: Cannot use copy constructor since qhsettemp_defined (e.g., QhullVertexSet for a set and/or list of QhFacet). Contains %d vertices", other.count());
}
return *this;
}//assignment
void QhullVertexSet::
freeQhSetTemp()
{
if(qhsettemp_defined){
qhsettemp_defined= false;
QH_TRY_(qh()){ // no object creation -- destructors skipped on longjmp()
qh_settempfree(qh(), referenceSetT()); // errors if not top of tempstack or if qhmem corrupted
}
qh()->NOerrexit= true;
qh()->maybeThrowQhullMessage(QH_TRY_status, QhullError::NOthrow);
}
}//freeQhSetTemp
QhullVertexSet::
~QhullVertexSet()
{
freeQhSetTemp();
}//~QhullVertexSet
//FIXUP -- Move conditional, QhullVertexSet code to QhullVertexSet.cpp
#ifndef QHULL_NO_STL
std::vector<QhullVertex> QhullVertexSet::
toStdVector() const
{
QhullSetIterator<QhullVertex> i(*this);
std::vector<QhullVertex> vs;
while(i.hasNext()){
QhullVertex v= i.next();
vs.push_back(v);
}
return vs;
}//toStdVector
#endif //QHULL_NO_STL
}//namespace orgQhull
#//!\name Global functions
using std::endl;
using std::ostream;
using orgQhull::QhullPoint;
using orgQhull::QhullVertex;
using orgQhull::QhullVertexSet;
using orgQhull::QhullVertexSetIterator;
//! Print Vertex identifiers to stream. Space prefix. From qh_printVertexheader [io_r.c]
ostream &
operator<<(ostream &os, const QhullVertexSet::PrintIdentifiers &pr)
{
os << pr.print_message;
for(QhullVertexSet::const_iterator i= pr.vertex_set->begin(); i!=pr.vertex_set->end(); ++i){
const QhullVertex v= *i;
os << " v" << v.id();
}
os << endl;
return os;
}//<<QhullVertexSet::PrintIdentifiers
//! Duplicate of printvertices [io_r.c]
ostream &
operator<<(ostream &os, const QhullVertexSet::PrintVertexSet &pr){
os << pr.print_message;
const QhullVertexSet *vs= pr.vertex_set;
QhullVertexSetIterator i= *vs;
while(i.hasNext()){
const QhullVertex v= i.next();
const QhullPoint p= v.point();
os << " p" << p.id() << "(v" << v.id() << ")";
}
os << endl;
return os;
}//<< PrintVertexSet

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