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QhullPoint.h
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QhullPoint.h
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/****************************************************************************
**
** Copyright (c) 2009-2011 C.B. Barber. All rights reserved.
** $Id: //main/2011/qhull/src/libqhullcpp/QhullPoint.h#3 $$Change: 1342 $
** $DateTime: 2011/03/07 21:55:47 $$Author: bbarber $
**
****************************************************************************/
#ifndef QHPOINT_H
#define QHPOINT_H
#include "QhullError.h"
#include "QhullIterator.h"
#include "UsingLibQhull.h"
#include "Coordinates.h"
extern "C" {
#include "libqhull/qhull_a.h"
}
#include <ostream>
namespace orgQhull {
#//Types
//! QhullPoint as a pointer and dimension to shared memory
class QhullPoint;
//! Java-style iterator for QhullPoint coordinates
class QhullPointIterator;
class QhullPoint {
//! A point is a pointer into an array of coordinates.
private:
#//Fields
coordT *point_coordinates; // Keep pointers aligned
int point_dimension;
public:
#//Subtypes
typedef const coordT * iterator;
typedef const coordT * const_iterator;
typedef QhullPoint::iterator Iterator;
typedef QhullPoint::const_iterator ConstIterator;
#//Class methods -- Convert point to id w/o QhullQh data structure
static int id(const coordT *c) { return QhullPoint::id(UsingLibQhull::NOqhRunId, 0, c); }
static int id(int qhRunId, const coordT *c) { return QhullPoint::id(qhRunId, 0, c); }
static int id(int qhRunId, int dimension, const coordT *c);
#//Construct
QhullPoint() : point_coordinates(0), point_dimension(0) {};
QhullPoint(int pointDimension, coordT *c) : point_coordinates(c), point_dimension(pointDimension) {}
explicit QhullPoint(Coordinates &c) : point_coordinates(c.data()), point_dimension(c.count()) {}
// Creates an alias. Does not copy the point. Needed for return by value and parameter passing.
QhullPoint(const QhullPoint &other) : point_coordinates(other.point_coordinates), point_dimension(other.point_dimension) {}
// Creates an alias. Does not copy the point. Needed for vector<QhullPoint>
QhullPoint &operator=(const QhullPoint &other) { point_coordinates= other.point_coordinates; point_dimension= other.point_dimension; return *this; }
~QhullPoint() {}
#//Conversions
// see coordinates()
#ifndef QHULL_NO_STL
std::vector<coordT> toStdVector() const;
#endif //QHULL_NO_STL
#ifdef QHULL_USES_QT
QList<coordT> toQList() const;
#endif //QHULL_USES_QT
#//Read-only
public:
const coordT *coordinates() const { return point_coordinates; }
coordT *coordinates() { return point_coordinates; }
int dimension() const { return point_dimension; }
int id(int qhRunId) const { return id(qhRunId, dimension(), coordinates()); }
int id() const { return id(UsingLibQhull::NOqhRunId, dimension(), coordinates()); }
bool isDefined() const { return point_coordinates!=0 && point_dimension>0; }
#//Define
void advancePoint(int idx) { point_coordinates += idx*point_dimension; }
void defineAs(int pointDimension, coordT *c) { QHULL_ASSERT(pointDimension>=0); point_coordinates= c; point_dimension= pointDimension; }
//! Creates an alias to other
void defineAs(QhullPoint &other) { point_coordinates= other.coordinates(); point_dimension= other.dimension(); }
void setCoordinates(coordT *c) { point_coordinates= c; }
void setDimension(int pointDimension) { point_dimension= pointDimension; }
#//value
double distance(const QhullPoint &p) const;
#//iterator
iterator begin() { return point_coordinates; }
const_iterator begin() const { return point_coordinates; }
const_iterator constBegin() const { return point_coordinates; }
const_iterator constEnd() const { return point_coordinates+point_dimension; }
int count() { return dimension(); }
iterator end() { return point_coordinates+point_dimension; }
const_iterator end() const { return point_coordinates+point_dimension; }
size_t size() { return (size_t)dimension(); }
#//Operator
bool operator==(const QhullPoint &other) const;
bool operator!=(const QhullPoint &other) const { return !operator==(other); }
const coordT &operator[](int idx) const { QHULL_ASSERT(idx>=0 && idx<point_dimension); return *(point_coordinates+idx); }
coordT &operator[](int idx) { QHULL_ASSERT(idx>=0 && idx<point_dimension); return *(point_coordinates+idx); }
struct PrintPoint{
const QhullPoint *point;
const char *point_message;
int run_id;
bool with_identifier;
PrintPoint(int qhRunId, const char *message, bool withIdentifier, const QhullPoint &p) : point(&p), point_message(message), run_id(qhRunId), with_identifier(withIdentifier) {}
};//PrintPoint
PrintPoint print() const { return PrintPoint(UsingLibQhull::NOqhRunId, "", false, *this); }
PrintPoint print(int qhRunId) const { return PrintPoint(qhRunId, "", true, *this); }
PrintPoint print(int qhRunId, const char *message) const { return PrintPoint(qhRunId, message, false, *this); }
PrintPoint printWithIdentifier(int qhRunId, const char *message) const { return PrintPoint(qhRunId, message, true, *this); }
};//QhullPoint
QHULL_DECLARE_SEQUENTIAL_ITERATOR(QhullPoint, coordT)
}//namespace orgQhull
#//Global functions
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullPoint::PrintPoint &pr);
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullPoint &p); // FIXUP QH11017 OK in c program but not inline { os << p.print(orgQhull::UsingLibQhull::NOqhRunId, ""); return os; }
#endif // QHPOINT_H

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