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QhullQh.h
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Sat, Oct 19, 12:17

QhullQh.h
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/****************************************************************************
**
** Copyright (c) 2008-2015 C.B. Barber. All rights reserved.
** $Id: //main/2015/qhull/src/libqhullcpp/QhullQh.h#2 $$Change: 2079 $
** $DateTime: 2016/02/07 17:43:34 $$Author: bbarber $
**
****************************************************************************/
#ifndef QHULLQH_H
#define QHULLQH_H
#include "libqhull_r/qhull_ra.h"
#include <string>
#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
//! Use QH_TRY_ or QH_TRY_NOTHROW_ to call a libqhull_r routine that may invoke qh_errexit()
//! QH_TRY_(qh){...} qh->NOerrexit=true;
//! No object creation -- longjmp() skips object destructors
//! To test for error when done -- qh->maybeThrowQhullMessage(QH_TRY_status);
//! Use the same compiler for QH_TRY_, libqhullcpp, and libqhull_r. setjmp() is not portable between compilers.
#define QH_TRY_ERROR 10071
#define QH_TRY_(qh) \
int QH_TRY_status; \
if(qh->NOerrexit){ \
qh->NOerrexit= False; \
QH_TRY_status= setjmp(qh->errexit); \
}else{ \
throw QhullError(QH_TRY_ERROR, "Cannot invoke QH_TRY_() from inside a QH_TRY_. Or missing 'qh->NOerrexit=true' after previously called QH_TRY_(qh){...}"); \
} \
if(!QH_TRY_status)
#define QH_TRY_NO_THROW_(qh) \
int QH_TRY_status; \
if(qh->NOerrexit){ \
qh->NOerrexit= False; \
QH_TRY_status= setjmp(qh->errexit); \
}else{ \
QH_TRY_status= QH_TRY_ERROR; \
} \
if(!QH_TRY_status)
namespace orgQhull {
#//!\name Defined here
//! QhullQh -- Qhull's global data structure, qhT, as a C++ class
class QhullQh;
//! POD type equivalent to qhT. No virtual members
class QhullQh : public qhT {
#//!\name Constants
#//!\name Fields
private:
int qhull_status; //!< qh_ERRnone if valid
std::string qhull_message; //!< Returned messages from libqhull_r
std::ostream * error_stream; //!< overrides errorMessage, use appendQhullMessage()
std::ostream * output_stream; //!< send output to stream
double factor_epsilon; //!< Factor to increase ANGLEround and DISTround for hyperplane equality
bool use_output_stream; //!< True if using output_stream
friend void ::qh_fprintf(qhT *qh, FILE *fp, int msgcode, const char *fmt, ... );
static const double default_factor_epsilon; //!< Default factor_epsilon is 1.0, never updated
#//!\name Constructors
public:
QhullQh();
~QhullQh();
private:
//!disable copy constructor and assignment
QhullQh(const QhullQh &);
QhullQh & operator=(const QhullQh &);
public:
#//!\name GetSet
double factorEpsilon() const { return factor_epsilon; }
void setFactorEpsilon(double a) { factor_epsilon= a; }
void disableOutputStream() { use_output_stream= false; }
void enableOutputStream() { use_output_stream= true; }
#//!\name Messaging
void appendQhullMessage(const std::string &s);
void clearQhullMessage();
std::string qhullMessage() const;
bool hasOutputStream() const { return use_output_stream; }
bool hasQhullMessage() const;
void maybeThrowQhullMessage(int exitCode);
void maybeThrowQhullMessage(int exitCode, int noThrow) throw();
int qhullStatus() const;
void setErrorStream(std::ostream *os);
void setOutputStream(std::ostream *os);
#//!\name Methods
double angleEpsilon() const { return this->ANGLEround*factor_epsilon; } //!< Epsilon for hyperplane angle equality
void checkAndFreeQhullMemory();
double distanceEpsilon() const { return this->DISTround*factor_epsilon; } //!< Epsilon for distance to hyperplane
};//class QhullQh
}//namespace orgQhull
#endif // QHULLQH_H

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