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plot.cc
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plot.cc
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/* -*- mode:C++ ; compile-command: "g++ -I. -I.. -I../include -g -c plot.cc -Wall -DIN_GIAC -DHAVE_CONFIG_H -DGIAC_GENERIC_CONSTANTS " -*- */
// NB: Using gnuplot optimally requires patching and recompiling gnuplot
// If you use the -DGNUPLOT_IO compile flag, you
// MUST compile gnuplot with interactive mode enabled, file src/plot.c
// line 448
/*
diff plot.c plot.c~
448c448
< interactive = TRUE; // isatty(fileno(stdin));
---
> interactive = isatty(fileno(stdin));
*/
/*
* Copyright (C) 2000/14 B. Parisse, Institut Fourier, 38402 St Martin d'Heres
* implicitplot3d code adapted from
* http://astronomy.swin.edu.au/~pbourke/modelling/polygonise
* by Paul Bourke and Cory Gene Bloyd
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "giacPCH.h"
using namespace std;
#if !defined NSPIRE && !defined FXCG && !defined KHICAS
#ifdef VISUALC13
#undef clock
#undef clock_t
#endif
#include <iomanip>
#endif
#if !defined GIAC_HAS_STO_38 && !defined NSPIRE && !defined FXCG
#include <fstream>
#endif
#include "vector.h"
#include <algorithm>
#include <cmath>
#if 0
#include<ext/stdio_filebuf.h>
typedef std::basic_ofstream<char>::__filebuf_type buffer_t;
typedef __gnu_cxx::stdio_filebuf<char> io_buffer_t;
FILE* cfile_impl(buffer_t* const fb){
return (static_cast<io_buffer_t* const>(fb))->file(); //type std::__c_file
}
FILE* cfile(std::ofstream const& ofs){return cfile_impl(ofs.rdbuf());}
FILE* cfile(std::ifstream const& ifs){return cfile_impl(ifs.rdbuf());}
#endif
// C headers
#include <stdio.h>
#ifndef __VISUALC__
#if !defined RTOS_THREADX && !defined BESTA_OS && !defined FREERTOS && !defined FXCG
#include <fcntl.h>
#endif
#endif // __VISUALC__
#ifdef FXCG
extern "C" {
#include <fxcg/keyboard.h>
#include <fxcg/display.h>
}
#endif
// Giac headers
#include "gen.h"
#include "usual.h"
#include "prog.h"
#include "rpn.h"
#include "identificateur.h"
#include "subst.h"
#include "symbolic.h"
#include "derive.h"
#include "solve.h"
#include "intg.h"
#include "path.h"
#include "sym2poly.h"
#include "input_parser.h"
#include "input_lexer.h"
#include "ti89.h"
#include "isom.h"
#include "unary.h"
#include "plot.h"
#include "plot3d.h"
#include "ifactor.h"
#include "gauss.h"
#include "misc.h"
#include "lin.h"
#include "quater.h"
#include "giacintl.h"
#include "signalprocessing.h"
#ifdef USE_GMP_REPLACEMENTS
#undef HAVE_GMPXX_H
#undef HAVE_LIBMPFR
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#ifndef BESTA_OS
#define clock_t int
//#define CLOCK() 0
#endif
#endif
#ifndef HAVE_NO_SYS_RESOURCE_WAIT_H
#ifndef __MINGW_H
#include <sys/resource.h>
#endif
#include <sys/wait.h>
#endif
#if defined GIAC_HAS_STO_38 || defined NSPIRE || defined NSPIRE_NEWLIB || defined FXCG || defined GIAC_GGB || defined USE_GMP_REPLACEMENTS || defined KHICAS
inline bool is_graphe(const giac::gen &g){ return false; }
inline giac::gen _graph_vertices(const giac::gen &g,const giac::context *){ return g;}
inline giac::gen _is_planar(const giac::gen &g,const giac::context *){ return g;}
#else
#include "signalprocessing.h"
#include "graphtheory.h"
#endif
extern const int BUFFER_SIZE;
#ifndef NO_NAMESPACE_GIAC
namespace giac {
#endif // ndef NO_NAMESPACE_GIAC
#ifdef IPAQ
int LEGENDE_SIZE=40;
int COORD_SIZE=26;
int PARAM_STEP=18;
#else // IPAQ
int LEGENDE_SIZE=100;
int COORD_SIZE=30;
int PARAM_STEP=20;
#endif // IPAQ
#ifdef GNUWINCE
ofstream * outptr=0;
#endif
// int plot_instructionsh=300,plot_instructionsw=300;
const int _GROUP__VECT_subtype[]={_GROUP__VECT,_LINE__VECT,_HALFLINE__VECT,_VECTOR__VECT,_POLYEDRE__VECT,_POINT__VECT,0};
#ifdef IPAQ
double gnuplot_xmin=-4,gnuplot_xmax=4,gnuplot_ymin=-4,gnuplot_ymax=4,gnuplot_zmin=-5,gnuplot_zmax=5,gnuplot_tmin=-6,gnuplot_tmax=6,gnuplot_tstep=0.3;
#else
double gnuplot_xmin=-5,gnuplot_xmax=5,gnuplot_ymin=-5,gnuplot_ymax=5,gnuplot_zmin=-5,gnuplot_zmax=5,gnuplot_tmin=-6,gnuplot_tmax=6,gnuplot_tstep=0.1;
#endif
double global_window_xmin(gnuplot_xmin),global_window_xmax(gnuplot_xmax),global_window_ymin(gnuplot_ymin),global_window_ymax(gnuplot_ymax);
double x_tick(1.0),y_tick(1.0);
double class_minimum(0.0),class_size(1.0);
#if defined RTOS_THREADX || defined EMCC || defined EMCC2 || defined KHICAS
int gnuplot_pixels_per_eval=128;
#else
int gnuplot_pixels_per_eval=401;
#endif
bool autoscale=true;
bool has_gnuplot=true;
bool fastcurveprint=false;
static gen rand_complex(){
int i=std_rand(),j=std_rand();
i=i/(RAND_MAX/10)-5;
j=j/(RAND_MAX/10)-5;
return i+j*cst_i;
}
gen abs_norm(const gen & g,GIAC_CONTEXT){
if (g.type==_VECT)
return sqrt(dotvecteur(*g._VECTptr,*g._VECTptr),contextptr);
else
return abs(g,contextptr);
}
gen abs_norm(const gen & a,const gen & b,GIAC_CONTEXT){
if (a.type==_VECT)
return abs_norm(b-a,contextptr);
gen ax,ay,bx,by;
reim(a,ax,ay,contextptr);
reim(b,bx,by,contextptr);
bx -= ax;
by -= ay;
return sqrt(bx*bx+by*by,contextptr);
}
gen abs_norm2(const gen & g,GIAC_CONTEXT){
if (g.type==_VECT)
return dotvecteur(*g._VECTptr,*g._VECTptr);
else
return ratnormal(_lin(g*conj(g,contextptr),contextptr),contextptr);
}
gen dotvecteur(const gen & a,const gen & b,GIAC_CONTEXT){
return scalar_product(a,b,contextptr);
/*
if (a.type==_VECT)
return dotvecteur(*a._VECTptr,*b._VECTptr);
else
return -im(a*conj(cst_i*b,contextptr),contextptr);
*/
}
static gen set3derr(GIAC_CONTEXT){
return gensizeerr(contextptr); // 2-d instruction
}
static void in_autoname_plus_plus(string & autoname){
int labs=int(autoname.size());
if (!labs){
autoname="A";
labs=1;
}
#ifdef GIAC_HAS_STO_38
int labsmin=1;
#else
int labsmin=0;
#endif
for (;labs>labsmin;--labs){
char c=autoname[labs-1];
if (c!='Z' && c!='z'){
autoname[labs-1]=char(c+1);
return;
}
autoname[labs-1]='A';
}
if (labs==labsmin)
autoname += 'A';
}
void autoname_plus_plus(string & autoname){
#ifdef GIAC_HAS_STO_38
if (autoname.size()==2 && autoname[0]=='G' && autoname[1]<'Z'){
if (autoname[1]=='E')
autoname[1]='G';
else {
if (autoname[1]=='Z')
autoname[1]='a';
else
++autoname[1];
}
return;
}
#endif
for (;;){
in_autoname_plus_plus(autoname);
if (gen(autoname,context0).type==_IDNT) // FIXME GIAC_CONTEXT
break;
}
}
#ifdef WITH_GNUPLOT
string PICTautoname("A");
void PICTautoname_plus_plus(){
autoname_plus_plus(PICTautoname);
}
#endif
// find last at_erase in history, return next position (or 0 if not found)
int erase_pos(GIAC_CONTEXT){
int s=int(history_out(contextptr).size());
if (!s)
return s;
gen e;
for (int i=s-1;i>=0;--i){
e=history_out(contextptr)[i];
if ( (e.type==_SYMB && (e._SYMBptr->sommet==at_erase
// || equalposcomp(implicittex_plot_sommets,e._SYMBptr->sommet)
)) ||
(e.type==_FUNC && (*e._FUNCptr==at_erase
// || equalposcomp(implicittex_plot_sommets,e._SYMBptr->sommet)
) ) )
return i+1;
}
return 0;
// int i=history_out(contextptr).find_last_of(at_erase);
}
int erase_pos(int current,GIAC_CONTEXT){
int s=int(history_out(contextptr).size());
if (current>=s)
current=s-1;
if (!s)
return s;
gen e;
for (int i=current;i>=0;--i){
e=history_out(contextptr)[i];
if ( (e.type==_SYMB && (e._SYMBptr->sommet==at_erase
// || equalposcomp(implicittex_plot_sommets,e._SYMBptr->sommet)
)) ||
(e.type==_FUNC && (*e._FUNCptr==at_erase
// || equalposcomp(implicittex_plot_sommets,e._SYMBptr->sommet)
) ) )
return i+1;
}
return 0;
// int i=history_out(contextptr).find_last_of(at_erase);
}
gen remove_at_pnt(const gen & e){
int t=e.type;
if (t==_VECT && e.subtype==_GGB__VECT){
if (e._VECTptr->size()==2)
return e._VECTptr->front()+cst_i*e._VECTptr->back();
if (e._VECTptr->size()==3)
return change_subtype(e,_POINT__VECT);
}
if (t==_SYMB && e._SYMBptr->sommet==at_pnt){
const gen & f = e._SYMBptr->feuille;
#if 1
if (f.type==_VECT){
const vecteur & v = *f._VECTptr;
if (!v.empty())
return v.front();
}
#else
if (f.type==_VECT){
vecteur & v = *f._VECTptr;
/*
int s=int(v.size());
if (s){
if (s>1 && v[1].type==_VECT){
gen & v1=v[1];
if (v1.type==_VECT && v1._VECTptr->size()>1){
gen v12=(*v1._VECTptr)[1];
if (v12.type<=_CPLX)
return v12;
if (v12.type==_STRNG){
string s=*v12._STRNGptr;
if (!s.empty() && s[s.size()-1]==' '){
gen g(s,context0);
if (g.is_symb_of_sommet(at_equal))
return g._SYMBptr->feuille._VECTptr->back();
}
}
}
}
*/
return v.front();
}
}
#endif
return gensizeerr("Bad pnt argument");
}
return e;
}
/*
static gen unsubtype(const gen & g){
return (g.type==_VECT)?gen(*g._VECTptr):g;
}
*/
gen remove_sto(const gen & e){
if ( (e.type==_SYMB) && (e._SYMBptr->sommet==at_sto))
return e._SYMBptr->feuille._VECTptr->back();
else
return e;
}
vecteur selection2vecteur(const vector<int> & selected,GIAC_CONTEXT){
int i=erase_pos(contextptr);
vecteur res;
vector<int>::const_iterator it=selected.begin(),itend=selected.end();
for (;it!=itend;++it){
gen e=history_in(contextptr)[i+*it];
if ( (e.type==_SYMB) && (e._SYMBptr->sommet==at_sto))
res.push_back(e._SYMBptr->feuille._VECTptr->back());
else
res.push_back(e);
}
return res;
}
vecteur selection2vecteureval(const vector<int> & selected,GIAC_CONTEXT){
int i=erase_pos(contextptr);
vecteur res;
vector<int>::const_iterator it=selected.begin(),itend=selected.end();
for (;it!=itend;++it){
gen e=history_out(contextptr)[i+*it];
res.push_back(e);
}
return res;
}
bool is_segment(const gen & e){
gen f=remove_at_pnt(e);
if ( (f.type!=_VECT) || (f._VECTptr->size()!=2))
return false;
return true;
}
int findfirstpoint(const vecteur & v){
const_iterateur it=v.begin(),itend=v.end();
gen p;
for (;it!=itend;++it){
p=*it;
if ( (p.type==_SYMB) && (p._SYMBptr->sommet==at_pnt)){
p=p._SYMBptr->feuille._VECTptr->front();
if ( (p.type!=_VECT || p.subtype==_POINT__VECT) && ( (p.type!=_SYMB) || (!equalposcomp(not_point_sommets,p._SYMBptr->sommet))) )
return int(it-v.begin());
}
}
return -1;
}
int findfirstcercle(const vecteur & v){
const_iterateur it=v.begin(),itend=v.end();
gen p;
for (;it!=itend;++it){
p=*it;
if ( (p.type==_SYMB) && (p._SYMBptr->sommet==at_pnt)){
p=p._SYMBptr->feuille._VECTptr->front();
if ( (p.type==_SYMB) && (p._SYMBptr->sommet==at_cercle) )
return int(it-v.begin());
}
}
return -1;
}
symbolic symb_curve(const gen & source,const gen & plot){
return symbolic(at_curve,gen(makevecteur(source,plot),_GROUP__VECT));
}
static symbolic symb_perpendiculaire(const gen & aa){
gen a(aa);
if (a.type==_VECT) a.subtype=_SEQ__VECT;
return symbolic(at_perpendiculaire,a);
}
static symbolic symb_milieu(const gen & aa){
gen a(aa);
if (a.type==_VECT) a.subtype=_SEQ__VECT;
return symbolic(at_milieu,a);
}
static symbolic symb_plotfunc(const gen & a,const gen & b){
return symbolic(at_plotfunc,makesequence(a,b));
}
static gen setplotfuncerr(){
return gensizeerr(gettext("Plotfunc: bad variable name"));
}
// find best int in selected (and modify selected)
// p is the pointed mouse point, eps the precision
// try_perp=-1 if no try of perp line, =an history_position otherwise
bool find_best(vector<int> & selected,const gen & p,double eps,int try_perp_history_pos,int & pnt_pos,int & history_position,gen & res,GIAC_CONTEXT){
vecteur v=selection2vecteur(selected,contextptr),w=selection2vecteureval(selected,contextptr);
pnt_pos=findfirstpoint(w);
if (pnt_pos<0){ // no point nearby, try to make one
// try intersection or midpoint
int nsegments=0,n1=-1,n2=-1;
const_iterateur it=w.begin(),itend=w.end();
for (;it!=itend;++it){
if (is_segment(*it)){
++nsegments;
n2=int(it-w.begin());
if (n1<0)
n1=n2;
}
}
if (nsegments>=2){
history_position=erase_pos(contextptr)+selected[n1];
gen l1=remove_sto(history_in(contextptr)[history_position]);
history_position=erase_pos(contextptr)+selected[n2];
gen l2=remove_sto(history_in(contextptr)[history_position]);
res = symbolic(at_head,symbolic(at_inter,makesequence(l1,l2)));
selected=vector<int>(2);
selected[0]=n1;
selected[1]=n2;
return true;
}
if (nsegments){ // near middle point?
gen m=remove_at_pnt(_milieu(w[n1],0));
if (!is_undef(m) && is_greater(eps,abs(p-m,contextptr),contextptr)){
history_position=erase_pos(contextptr)+selected[n1];
gen l1=remove_sto(history_in(contextptr)[history_position]);
res=symb_milieu(l1);
selected=vector<int>(1,n1);
return true;
}
// near perp?
if (try_perp_history_pos>=0){
m=remove_at_pnt(history_out(contextptr)[try_perp_history_pos]);
gen pm=p-m;
gen wv=remove_at_pnt(w[n1]);
wv=wv._VECTptr->front()-wv._VECTptr->back();
if (is_greater(eps*abs(pm,contextptr)*abs(wv,contextptr),scalar_product(pm,wv,contextptr),contextptr)){
history_position=erase_pos(contextptr)+selected[n1];
gen l1=remove_sto(history_in(contextptr)[history_position]);
res=symb_perpendiculaire(makevecteur(remove_sto(history_in(contextptr)[try_perp_history_pos]),l1));
res=symbolic(at_head,symbolic(at_inter,makesequence(l1,res)));
selected=vector<int>(1,n1);
return true;
}
}
}
// try a cercle
pnt_pos=findfirstcercle(w);
if (pnt_pos<0)
return false;
history_position=erase_pos(contextptr)+selected[pnt_pos];
res=remove_sto(history_in(contextptr)[history_position]);
return true;
}
else {
history_position=erase_pos(contextptr)+selected[pnt_pos];
res=remove_sto(history_in(contextptr)[history_position]);
return true;
}
}
void streamcopy(FILE * source,FILE * target){
char c;
for (;!feof(source);){
c=fgetc(source);
if (!feof(source))
fputc(c,target);
}
fclose(source);
}
#if !defined VISUALC && ! defined __MINGW_H && !defined BESTA_OS && !defined FXCG
int set_nonblock_flag (int desc, int value){
int oldflags = fcntl (desc, F_GETFL, 0);
/* If reading the flags failed, return error indication now. */
if (oldflags == -1)
return -1;
/* Set just the flag we want to set. */
if (value != 0)
oldflags |= O_NONBLOCK;
else
oldflags &= ~O_NONBLOCK;
/* Store modified flag word in the descriptor. */
return fcntl (desc, F_SETFL, oldflags);
}
int set_cloexec_flag (int desc, int value){
int oldflags = fcntl (desc, F_GETFD, 0);
/* If reading the flags failed, return error indication now.
if (oldflags < 0)
return oldflags;
// Set just the flag we want to set. */
if (value != 0)
oldflags |= FD_CLOEXEC;
else
oldflags &= ~FD_CLOEXEC;
/* Store modified flag word in the descriptor. */
return fcntl (desc, F_SETFD, oldflags);
}
#endif
bool gnuplot_opengl=false;
#ifdef WITH_GNUPLOT
vecteur plot_instructions;
#ifdef WIN32
static bool win9x=true; // For win95/98/Me we can not pipe to gnuplot
#else
static bool win9x=false;
#endif
static pid_t gnuplot_pid=0;
string gnuplot_name(giac_gnuplot_location);
int gnuplot_fileno=0;
bool gnuplot_do_splot=true;
int gnuplot_in_pipe[2]={-1,-1},gnuplot_out_pipe[2]={-1,-1};
FILE * gnuplot_out_readstream=0;
#ifdef IPAQ
bool gnuplot_hidden3d=false;
#else
bool gnuplot_hidden3d=true;
#endif
bool gnuplot_pm3d=false;
static int gnuplot_wait_times=5;
string gnuplot_filename("session3d");
bool ck_gnuplot(string & s){
if (!access(s.c_str(),R_OK))
return true;
if (!access("/usr/local/bin/gnuplot",R_OK)){
s="/usr/local/bin/gnuplot";
return true;
}
if (!access("/usr/bin/gnuplot",R_OK)){
s="/usr/bin/gnuplot";
return true;
}
if (!access((xcasroot()+"gnuplot").c_str(),R_OK)){
s=xcasroot()+"gnuplot";
return true;
}
return false;
}
int run_gnuplot(int & r){
#ifdef WIN32
has_gnuplot=false;
return -1;
#ifdef GNUWINCE
#endif
gnuplot_name=xcasroot()+"pgnuplot.exe";
#endif //WIN32
if (!gnuplot_pid){ // start a gnuplot process
if (!ck_gnuplot(gnuplot_name))
{
has_gnuplot=false;
return -1;
}
if (pipe(gnuplot_in_pipe) || pipe(gnuplot_out_pipe))
throw(std::runtime_error("Plot error: Unable to create pipe"));
gnuplot_pid=fork();
if (gnuplot_pid<(pid_t) 0)
throw(std::runtime_error("Plot error: Unable to fork"));
if (!gnuplot_pid){ // child process, redirect input/output
#ifndef GNUPLOT_IO
int gnuplot_out=open("gnuplot.out",O_WRONLY | O_CREAT);
dup2(gnuplot_out,STDERR_FILENO);
close(gnuplot_out);
#else
dup2(gnuplot_out_pipe[1],STDERR_FILENO);
close(gnuplot_out_pipe[1]);
set_cloexec_flag(STDERR_FILENO,0);
#endif
dup2(gnuplot_in_pipe[0],STDIN_FILENO);
close(gnuplot_in_pipe[0]);
// cout << errno << '\n';
#ifdef IPAQ
execlp("gnuplot","gnuplot -geometry 235x300 -noraise",0);
#else
execlp("gnuplot","gnuplot -geometry 500x700 -noraise",0); // start gnuplot
#endif
return -1; // in case gnuplot is not found
}
else {
usleep(10000);
bool clrplot=false;
FILE * stream = open_gnuplot(clrplot,gnuplot_out_readstream,r);
gnuplot_out_readstream=fdopen(r,"r");
gnuplot_wait(r,gnuplot_out_readstream,3);
// close(gnuplot_out_pipe[1]);
// close(gnuplot_in_pipe[0]);
}
}
r=gnuplot_out_pipe[0];
return gnuplot_in_pipe[1];
return 0;
}
FILE * open_gnuplot(bool & clrplot,FILE * & gnuplot_out_r,int & r){
if (win9x){
r=-1;
#ifdef WIN32
gnuplot_name="'"+xcasroot()+"wgnuplot.exe'"; // was xcasroot()+"wgnuplot.exe",
#ifdef GNUWINCE
gnuplot_name="/gnuplot.exe";
#endif
#endif
FILE * stream= fopen("gnuplot.txt","a");
if (!stream)
stream=fopen("gnuplot.txt","w");
if (!stream)
setsizeerr(gettext("Gnuplot write error"));
return stream;
}
FILE * res=fdopen(run_gnuplot(r),"w");
if (!res)
setsizeerr(gettext("Gnuplot write error"));
#ifdef __APPLE__
if (debug_infolevel)
printf("set terminal aqua\n");
fprintf(res,"set terminal aqua\n");
#endif
// CERR << errno << '\n';
gnuplot_out_r = gnuplot_out_readstream;
// CERR << r << " " << errno << '\n';
return res;
}
void terminal_stream_replot(const char * terminal,FILE * stream,const char * filename){
#ifdef IPAQ
if (string(terminal)=="png")
return;
#endif
#ifdef __APPLE__
if (string(terminal)=="png")
return;
#endif
fprintf(stream,"set terminal %s\nset output \"%s\"\nreplot\nset output\n",terminal,filename);
if (debug_infolevel)
printf("set terminal %s\nset output \"%s\"\nreplot\nset output\n",terminal,filename);
#ifdef WIN32
if (debug_infolevel)
printf("set terminal windows\n");
fprintf(stream,"set terminal windows\n");
#else
#ifdef __APPLE__
if (debug_infolevel)
printf("set terminal aqua\n");
fprintf(stream,"set terminal aqua\n");
#else
if (debug_infolevel)
printf("set terminal x11\n");
fprintf(stream,"set terminal x11\n");
#endif
#endif
fflush(stream);
}
void terminal_stream_replot(const char * terminal,FILE * stream,int i,const char * file_extension){
terminal_stream_replot(terminal,stream,(gnuplot_filename+print_INT_(i)+"."+string(file_extension)).c_str());
}
void gnuplot_wait(int handle,FILE * gnuplot_out_readstream,int ngwait){
#ifndef GNUPLOT_IO
usleep(200000);
return;
#endif
// CERR << "gnuplot_wait " << handle << " " << gnuplot_out_readstream << " " << ngwait << '\n';
// wait for gnuplot to be quiet
if (handle>0 && gnuplot_out_readstream){
int i,ntry=500;
for (;ntry;){
usleep(10000);
set_nonblock_flag(handle,1);
i=fgetc(gnuplot_out_readstream);
// CERR << char(i) ;
if (char(i)=='>')
--ngwait;
set_nonblock_flag(handle,0);
if (i==EOF){
if (ngwait<=0)
break;
usleep(10000);
--ntry;
}
set_nonblock_flag(handle,1);
while (i!=EOF){
i=fgetc(gnuplot_out_readstream);
// CERR << char(i);
if (char(i)=='>')
--ngwait;
}
set_nonblock_flag(handle,0);
}
// fclose(gnuplot_out_readstream);
usleep(10000);
// CERR << "gnuplot_wait end " << getpid() << " " <<CLOCK() << '\n';
}
else
;// CERR << "gnuplot wait no input" << '\n';
}
bool terminal_replot(const char * terminal,int i,const char * file_extension){
if (!has_gnuplot)
return 0;
if (win9x){
FILE * stream2 =fopen("gnuplot.gp","w");
FILE * stream =fopen("gnuplot.txt","r");
streamcopy(stream,stream2);
terminal_stream_replot(terminal,stream2,i,file_extension);
system_no_deprecation((gnuplot_name+" gnuplot.gp").c_str());
}
else {
bool clrplot;
int r;
FILE * gnuplot_out_readstream,* stream = open_gnuplot(clrplot,gnuplot_out_readstream,r);
terminal_stream_replot(terminal,stream,i,file_extension);
gnuplot_wait(r,gnuplot_out_readstream,gnuplot_wait_times);
}
return true;
}
bool terminal_replot(const char * terminal,const string & s){
if (!has_gnuplot)
return 0;
#ifdef IPAQ
if (string(terminal)=="png")
return 0;
#endif
#ifdef __APPLE__
if (string(terminal)=="png")
return 0;
#endif
if (win9x){
FILE * stream = fopen("gnuplot.txt","r");
FILE * stream2 =fopen("gnuplot.gp","w");
streamcopy(stream,stream2);
terminal_stream_replot(terminal,stream2,s.c_str());
system_no_deprecation((gnuplot_name+" gnuplot.gp").c_str());
}
else {
bool clrplot;
int r;
FILE * gnuplot_out_readstream,* stream = open_gnuplot(clrplot,gnuplot_out_readstream,r);
terminal_stream_replot(terminal,stream,s.c_str());
gnuplot_wait(r,gnuplot_out_readstream,gnuplot_wait_times);
}
return true;
}
void win9x_gnuplot(FILE * stream){
if (!win9x){
#ifndef IPAQ
#ifndef __APPLE__
latex_replot(stream,(gnuplot_filename+print_INT_(gnuplot_fileno)+".tex").c_str());
terminal_stream_replot("png",stream,gnuplot_fileno,"png");
#endif
#endif
fflush(stream);
return;
}
fflush(stream);
fclose(stream);
#ifdef GNUWINCE
(*outptr) << "// <plot> </plot>" << '\n';
return ;
#endif
// Copy to a temporary gnuplot
unlink("gnuplot.gp");
FILE * stream2 = fopen("gnuplot.gp","w");
stream = fopen("gnuplot.txt","r");
streamcopy(stream,stream2);
fprintf(stream2,"pause -1 \"Press RETURN when OK\"\n");
latex_replot(stream2,(gnuplot_filename+print_INT_(gnuplot_fileno)+".tex").c_str());
terminal_stream_replot("png",stream2,gnuplot_fileno,"png");
fflush(stream2);
fclose(stream2);
system_no_deprecation((gnuplot_name+" gnuplot.gp").c_str());
}
void kill_gnuplot(){
if (gnuplot_pid){
FILE *stream;
stream = fdopen (gnuplot_in_pipe[1], "w");
fprintf(stream,"\n\nq\n");
if (fclose(stream))
CERR << "Error closing gnuplot" << '\n';
}
}
bool png_replot(int i){
return terminal_replot("png",i,"png");
}
bool png_replot(const string & s){
return terminal_replot("png",s);
}
string gnuplot_traduit(const gen & g){
string s(evalf(g,1,0).print());
string f_s(s),ff_s;
string::iterator it=f_s.begin(),itend=f_s.end();
for (;it!=itend;++it){
if (*it=='^')
ff_s += "**";
else
ff_s += *it;
}
return ff_s;
}
#endif // WITH_GNUPLOT
static void plotpreprocess(gen & g,vecteur & quoted,GIAC_CONTEXT){
gen tmp=eval(g,contextptr);
if (tmp.type==_IDNT){
g=tmp;
quoted=vecteur(1,tmp);
return;
}
if (tmp.type==_VECT){
bool done=true;
const_iterateur it=tmp._VECTptr->begin(),itend=tmp._VECTptr->end();
if (it!=itend){
for (;it!=itend;++it){
if (it->type!=_IDNT && !it->is_symb_of_sommet(at_at))
break;
}
if (it==itend){
g=tmp;
quoted=*tmp._VECTptr;
}
else
done=false;
}
else
done=false;
if (!done){
if (g.type==_VECT)
quoted=*g._VECTptr;
else
quoted=vecteur(1,g);
}
}
else {
quoted=vecteur(1,g);
}
}
vecteur quote_eval(const vecteur & v,const vecteur & quoted,GIAC_CONTEXT){
/*
vecteur l(quoted);
lidnt(v,l);
int qs=quoted.size();
l=vecteur(l.begin()+qs,l.end());
vecteur lnew=*eval(l,1,contextptr)._VECTptr;
vecteur w=subst(v,l,lnew,true,contextptr);
return w;
*/
const_iterateur it=quoted.begin(),itend=quoted.end();
vector<int> save;
for (;it!=itend;++it){
gen tmp=*it;
if (is_equal(tmp))
tmp=tmp._SYMBptr->feuille._VECTptr->front();
if (tmp.type!=_IDNT)
save.push_back(-1);
else {
if (contextptr && contextptr->quoted_global_vars){
gen ckassume=tmp._IDNTptr->eval(1,tmp,contextptr);
if (ckassume.type==_VECT && ckassume.subtype==_ASSUME__VECT)
save.push_back(-1);
else {
contextptr->quoted_global_vars->push_back(tmp);
save.push_back(0);
}
}
else {
if (tmp._IDNTptr->quoted){
save.push_back(*tmp._IDNTptr->quoted);
*tmp._IDNTptr->quoted=1;
}
else
save.push_back(0);
}
}
}
vecteur res(v);
int s=int(v.size());
for (int i=0;i<s;++i){
#ifndef NO_STDEXCEPT
try {
#endif
bool done=false;
if (v[i].is_symb_of_sommet(at_prod) && v[i]._SYMBptr->feuille.type==_VECT){ // hack for polarplot using re(rho)
vecteur vi = *v[i]._SYMBptr->feuille._VECTptr;
if (!vi.empty() && vi.front().is_symb_of_sommet(at_re)){
vi.front()=vi.front()._SYMBptr->feuille;
gen tmp=eval(vi,contextptr);
if (tmp.type==_VECT){
vi=*tmp._VECTptr;
vi.front()=symbolic(at_re,vi.front());
res[i]=_prod(vi,contextptr);
done=true;
}
}
}
if (!done){
#if 0
vecteur lv=lidnt(v[i]);
vecteur lw(lv);
for (int j=0;j<int(lw.size());++j){
gen g=eval(lv[j],1,contextptr);
g=ifte2when(g,contextptr);
lw[j]=g;
}
res[i]=quotesubst(v[i],lv,lw,contextptr); // otherwise plots with if else fails (error not catched with emscripten)
#endif
res[i]=eval(v[i],contextptr);
}
#ifndef NO_STDEXCEPT
} catch (std::runtime_error & ){
last_evaled_argptr(contextptr)=NULL;
// *logptr(contextptr) << e.what() << '\n';
}
#endif
}
it=quoted.begin();
for (int i=0;it!=itend;++it,++i){
if (save[i]>=0){