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QhullQh.cpp
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Wed, Jul 2, 04:45

QhullQh.cpp
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/****************************************************************************
**
** Copyright (c) 2008-2015 C.B. Barber. All rights reserved.
** $Id: //main/2011/qhull/src/libqhullcpp/QhullQh.cpp#15 $$Change: 1868 $
** $DateTime: 2015/03/26 20:13:15 $$Author: bbarber $
**
****************************************************************************/
#//! QhullQh -- Qhull's global data structure, qhT, as a C++ class
#include "QhullError.h"
#include "QhullQh.h"
#include "QhullStat.h"
// #include "Qhull.h"
#include <sstream>
#include <iostream>
#include <stdarg.h>
using std::cerr;
using std::string;
using std::vector;
using std::ostream;
#ifdef _MSC_VER // Microsoft Visual C++ -- warning level 4
#pragma warning( disable : 4611) // interaction between '_setjmp' and C++ object destruction is non-portable
#pragma warning( disable : 4996) // function was declared deprecated(strcpy, localtime, etc.)
#endif
namespace orgQhull {
#//!\name Global variables
const double QhullQh::
default_factor_epsilon= 1.0;
#//!\name Constructor, destructor, etc.
//! Derived from qh_new_qhull[user.c]
QhullQh::
QhullQh()
: qhull_status(qh_ERRnone)
, qhull_message()
, error_stream(0)
, output_stream(0)
, factor_epsilon(QhullQh::default_factor_epsilon)
, use_output_stream(false)
{
// NOerrors: TRY_QHULL_ not needed since these routines do not call qh_errexit()
qh_meminit(this, NULL);
qh_initstatistics(this);
qh_initqhull_start2(this, NULL, NULL, qh_FILEstderr); // Initialize qhT
this->ISqhullQh= True;
}//QhullQh
QhullQh::
~QhullQh()
{
qh_freeqhull(this, qh_ALL); // sets qh.NOerrexit. Clears struct *qh_qh including run_id
}//~QhullQh
#//!\name Methods
//! Check memory for internal consistency
//! Free global memory used by qh_initbuild and qh_buildhull
//! Zero the qhT data structure, except for memory (qhmemT) and statistics (qhstatT)
//! Check and free short memory (e.g., facetT)
//! Zero the qhmemT data structure
void QhullQh::
checkAndFreeQhullMemory()
{
#ifdef qh_NOmem
qh_freeqhull(this, qh_ALL);
#else
qh_memcheck(this);
qh_freeqhull(this, !qh_ALL);
countT curlong;
countT totlong;
qh_memfreeshort(this, &curlong, &totlong);
if (curlong || totlong)
throw QhullError(10026, "Qhull error: qhull did not free %d bytes of long memory (%d pieces).", totlong, curlong);
#endif
}//checkAndFreeQhullMemory
#//!\name Messaging
void QhullQh::
appendQhullMessage(const string &s)
{
if(output_stream && use_output_stream && this->USEstdout){
*output_stream << s;
}else if(error_stream){
*error_stream << s;
}else{
qhull_message += s;
}
}//appendQhullMessage
//! clearQhullMessage does not throw errors (~Qhull)
void QhullQh::
clearQhullMessage()
{
qhull_status= qh_ERRnone;
qhull_message.clear();
RoadError::clearGlobalLog();
}//clearQhullMessage
//! hasQhullMessage does not throw errors (~Qhull)
bool QhullQh::
hasQhullMessage() const
{
return (!qhull_message.empty() || qhull_status!=qh_ERRnone);
//FIXUP QH11006 -- inconsistent usage with Rbox. hasRboxMessage just tests rbox_status. No appendRboxMessage()
}
void QhullQh::
maybeThrowQhullMessage(int exitCode)
{
if(!NOerrexit){
if(qhull_message.size()>0){
qhull_message.append("\n");
}
if(exitCode || qhull_status==qh_ERRnone){
qhull_status= 10073;
}else{
qhull_message.append("QH10073: ");
}
qhull_message.append("Cannot call maybeThrowQhullMessage() from QH_TRY_(). Or missing 'qh->NOerrexit=true;' after QH_TRY_(){...}.");
}
if(qhull_status==qh_ERRnone){
qhull_status= exitCode;
}
if(qhull_status!=qh_ERRnone){
QhullError e(qhull_status, qhull_message);
clearQhullMessage();
throw e; // FIXUP QH11007: copy constructor is expensive if logging
}
}//maybeThrowQhullMessage
void QhullQh::
maybeThrowQhullMessage(int exitCode, int noThrow) throw()
{
QHULL_UNUSED(noThrow);
if(qhull_status==qh_ERRnone){
qhull_status= exitCode;
}
if(qhull_status!=qh_ERRnone){
QhullError e(qhull_status, qhull_message);
e.logErrorLastResort();
}
}//maybeThrowQhullMessage
//! qhullMessage does not throw errors (~Qhull)
std::string QhullQh::
qhullMessage() const
{
if(qhull_message.empty() && qhull_status!=qh_ERRnone){
return "qhull: no message for error. Check cerr or error stream\n";
}else{
return qhull_message;
}
}//qhullMessage
int QhullQh::
qhullStatus() const
{
return qhull_status;
}//qhullStatus
void QhullQh::
setErrorStream(ostream *os)
{
error_stream= os;
}//setErrorStream
//! Updates use_output_stream
void QhullQh::
setOutputStream(ostream *os)
{
output_stream= os;
use_output_stream= (os!=0);
}//setOutputStream
}//namespace orgQhull
/*-<a href="qh_qh-user.htm#TOC"
>-------------------------------</a><a name="qh_fprintf">-</a>
qh_fprintf(qhT *qh, fp, msgcode, format, list of args )
replaces qh_fprintf() in userprintf_r.c
notes:
only called from libqhull
same as fprintf() and RboxPoints.qh_fprintf_rbox()
fgets() is not trapped like fprintf()
Do not throw errors from here. Use qh_errexit;
*/
extern "C"
void qh_fprintf(qhT *qh, FILE *fp, int msgcode, const char *fmt, ... ) {
va_list args;
using namespace orgQhull;
if(!qh->ISqhullQh){
fprintf(stderr, "QH10025 Qhull error: qh_fprintf called from a Qhull instance without QhullQh defined\n");
qh_exit(10025);
}
QhullQh *qhullQh= static_cast<QhullQh *>(qh);
va_start(args, fmt);
if(msgcode<MSG_OUTPUT || fp == qh_FILEstderr){
if(msgcode>=MSG_ERROR && msgcode<MSG_WARNING){
if(qhullQh->qhull_status<MSG_ERROR || qhullQh->qhull_status>=MSG_WARNING){
qhullQh->qhull_status= msgcode;
}
}
char newMessage[MSG_MAXLEN];
// RoadError will add the message tag
vsnprintf(newMessage, sizeof(newMessage), fmt, args);
qhullQh->appendQhullMessage(newMessage);
va_end(args);
return;
}
if(qhullQh->output_stream && qhullQh->use_output_stream){
char newMessage[MSG_MAXLEN];
vsnprintf(newMessage, sizeof(newMessage), fmt, args);
*qhullQh->output_stream << newMessage;
va_end(args);
return;
}
// FIXUP QH11008: how do users trap messages and handle input? A callback?
char newMessage[MSG_MAXLEN];
vsnprintf(newMessage, sizeof(newMessage), fmt, args);
qhullQh->appendQhullMessage(newMessage);
va_end(args);
} /* qh_fprintf */

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