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/****************************************************************************
**
** Copyright (c) 2009-2015 C.B. Barber. All rights reserved.
** $Id: //main/2015/qhull/src/libqhullcpp/QhullHyperplane.h#4 $$Change: 2079 $
** $DateTime: 2016/02/07 17:43:34 $$Author: bbarber $
**
****************************************************************************/
#ifndef QHHYPERPLANE_H
#define QHHYPERPLANE_H
#include "libqhull_r/qhull_ra.h"
#include "libqhullcpp/QhullError.h"
#include "libqhullcpp/QhullIterator.h"
#include "libqhullcpp/QhullQh.h"
#include <ostream>
namespace orgQhull {
#//!\name Used here
class Qhull;
class QhullPoint;
#//!\name Defined here
//! QhullHyperplane as an offset, dimension, and pointer to coordinates
class QhullHyperplane;
//! Java-style iterator for QhullHyperplane coordinates
class QhullHyperplaneIterator;
class QhullHyperplane { // Similar to QhullPoint
public:
#//!\name Subtypes
typedef const coordT * iterator;
typedef const coordT * const_iterator;
typedef QhullHyperplane::iterator Iterator;
typedef QhullHyperplane::const_iterator ConstIterator;
private:
#//!\name Fields
coordT * hyperplane_coordinates; //!< Normal to hyperplane. facetT.normal is normalized to 1.0
QhullQh * qh_qh; //!< qhT for distanceEpsilon() in operator==
coordT hyperplane_offset; //!< Distance from hyperplane to origin
int hyperplane_dimension; //!< Dimension of hyperplane
#//!\name Construct
public:
QhullHyperplane() : hyperplane_coordinates(0), qh_qh(0), hyperplane_offset(0.0), hyperplane_dimension(0) {}
explicit QhullHyperplane(const Qhull &q);
QhullHyperplane(const Qhull &q, int hyperplaneDimension, coordT *c, coordT hyperplaneOffset);
explicit QhullHyperplane(QhullQh *qqh) : hyperplane_coordinates(0), qh_qh(qqh), hyperplane_offset(0.0), hyperplane_dimension(0) {}
QhullHyperplane(QhullQh *qqh, int hyperplaneDimension, coordT *c, coordT hyperplaneOffset) : hyperplane_coordinates(c), qh_qh(qqh), hyperplane_offset(hyperplaneOffset), hyperplane_dimension(hyperplaneDimension) {}
// Creates an alias. Does not copy the hyperplane's coordinates. Needed for return by value and parameter passing.
QhullHyperplane(const QhullHyperplane &other) : hyperplane_coordinates(other.hyperplane_coordinates), qh_qh(other.qh_qh), hyperplane_offset(other.hyperplane_offset), hyperplane_dimension(other.hyperplane_dimension) {}
// Creates an alias. Does not copy the hyperplane's coordinates. Needed for vector<QhullHyperplane>
QhullHyperplane & operator=(const QhullHyperplane &other) { hyperplane_coordinates= other.hyperplane_coordinates; qh_qh= other.qh_qh; hyperplane_offset= other.hyperplane_offset; hyperplane_dimension= other.hyperplane_dimension; return *this; }
~QhullHyperplane() {}
#//!\name Conversions --
//! Includes offset at end
#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
#//!\name GetSet
public:
const coordT * coordinates() const { return hyperplane_coordinates; }
coordT * coordinates() { return hyperplane_coordinates; }
void defineAs(int hyperplaneDimension, coordT *c, coordT hyperplaneOffset) { QHULL_ASSERT(hyperplaneDimension>=0); hyperplane_coordinates= c; hyperplane_dimension= hyperplaneDimension; hyperplane_offset= hyperplaneOffset; }
//! Creates an alias to other using the same qh_qh
void defineAs(QhullHyperplane &other) { hyperplane_coordinates= other.coordinates(); hyperplane_dimension= other.dimension(); hyperplane_offset= other.offset(); }
int dimension() const { return hyperplane_dimension; }
bool isValid() const { return hyperplane_coordinates!=0 && hyperplane_dimension>0; }
coordT offset() const { return hyperplane_offset; }
bool operator==(const QhullHyperplane &other) const;
bool operator!=(const QhullHyperplane &other) const { return !operator==(other); }
const coordT & operator[](int idx) const { QHULL_ASSERT(idx>=0 && idx<hyperplane_dimension); return *(hyperplane_coordinates+idx); }
coordT & operator[](int idx) { QHULL_ASSERT(idx>=0 && idx<hyperplane_dimension); return *(hyperplane_coordinates+idx); }
void setCoordinates(coordT *c) { hyperplane_coordinates= c; }
void setDimension(int hyperplaneDimension) { hyperplane_dimension= hyperplaneDimension; }
void setOffset(coordT hyperplaneOffset) { hyperplane_offset= hyperplaneOffset; }
#//!\name iterator
iterator begin() { return hyperplane_coordinates; }
const_iterator begin() const { return hyperplane_coordinates; }
const_iterator constBegin() const { return hyperplane_coordinates; }
const_iterator constEnd() const { return hyperplane_coordinates+hyperplane_dimension; }
int count() { return hyperplane_dimension; }
iterator end() { return hyperplane_coordinates+hyperplane_dimension; }
const_iterator end() const { return hyperplane_coordinates+hyperplane_dimension; }
size_t size() { return (size_t)hyperplane_dimension; }
#//!\name Methods
double distance(const QhullPoint &p) const;
double hyperplaneAngle(const QhullHyperplane &other) const;
double norm() const;
#//!\name IO
struct PrintHyperplane{
const QhullHyperplane *hyperplane;
const char * print_message; //!< non-null message
const char * hyperplane_offset_message; //!< non-null message
PrintHyperplane(const char *message, const char *offsetMessage, const QhullHyperplane &p) : hyperplane(&p), print_message(message), hyperplane_offset_message(offsetMessage) {}
};//PrintHyperplane
PrintHyperplane print(const char *message) const { return PrintHyperplane(message, "", *this); }
PrintHyperplane print(const char *message, const char *offsetMessage) const { return PrintHyperplane(message, offsetMessage, *this); }
};//QhullHyperplane
QHULL_DECLARE_SEQUENTIAL_ITERATOR(QhullHyperplane, coordT)
}//namespace orgQhull
#//!\name Global
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullHyperplane::PrintHyperplane &pr);
std::ostream &operator<<(std::ostream &os, const orgQhull::QhullHyperplane &p);
#endif // QHHYPERPLANE_H
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