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auto_nox.c
executable file
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auto_nox.c
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#include <string.h>
#include "parserslow.h"
#include "autevd.h"
#include "run_auto.h"
#include "auto_nox.h"
#include "auto_x11.h"
#include <libgen.h>
/* #include "f2c.h" */
#include "auto_f2c.h"
#include "auto_c.h"
#include "graf_par.h"
#include "load_eqn.h"
#include "read_dir.h"
#include "pp_shoot.h"
#include "read_dir.h"
/*#include "chunk.h"
*/
#include "kinescope.h"
#include "parserslow.h"
/*#include "graf_par.h"
*/
#include "ggets.h"
#include "init_conds.h"
#include "diagram.h"
#include "many_pops.h"
#include "browse.h"
#include "pop_list.h"
#include "menudrive.h"
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#ifndef WCTYPE
#include <ctype.h>
#else
#include <wctype.h>
#endif
#include "axes2.h"
#include "graphics.h"
#include "xpplim.h"
#include "autlim.h"
#include "xAuto.h"
#define MAXLINELENGTH 100000
#define PACK_AUTO 0
#define PACK_LBF 1
#define PARAM_BOX 1
#define RUBBOX 0
#define RUBLINE 1
/* #define RIGHT 6
#define LEFT 2 */
#define ESC 27
#define TAB 10
#define BAD 0
#define FINE 13
#define UPT 6
#define SPT 7
#define OPEN_3 1
#define NO_OPEN_3 0
#define OVERWRITE 0
#define APPEND 1
/* calculation types */
int TypeOfCalc=0;
#define LPE2 1
#define LPP2 2
#define HB2 3
#define TR2 4
#define BR2 5
#define PD2 6
#define FP2 7
#define BV1 8
#define EQ1 9
#define PE1 10
#define DI1 11
#define HO2 12
#define STD_WID 460 /* golden mean */
#define STD_HGT 284
#define MAX_LEN_SBOX 25
#define HI_P 0 /* uhi vs par */
#define NR_P 1 /* norm vs par */
#define HL_P 2 /* Hi and Lo vs par periodic only */
#define PE_P 3 /* period vs par */
#define P_P 4 /* param vs param */
#define FR_P 10 /* freq vs par */
#define AV_P 11 /* ubar vs par */
#define SPECIAL 5
#define SPER 3
#define UPER 4
#define CSEQ 1
#define CUEQ 2
#define DISCRETE 0
extern XAUTO xAuto;
extern int leng[MAXODE];
extern int PS_Color;
extern double TOR_PERIOD;
extern float **storage;
extern int storind;
extern double constants[];
extern int PointType;
extern int xorfix;
extern int NoBreakLine;
extern char *auto_hint[],*aaxes_hint[],*afile_hint[],*arun_hint[],*no_hint[];
extern int BVP_FLAG;
extern int fp8_is_open;
extern FILE *fp8;
/*extern char *strdup(const char *s);
*/
extern int AutoRedrawFlag;
extern int FLOWK;
extern int mark_flag;
extern int mark_ibrs,mark_ibre;
extern int mark_ipts,mark_ipte;
int SEc=20;
int UEc=0;
int SPc=26;
int UPc=28;
int HBc=0;
int LPc=20;
/* two parameter colors need to do this
LP is 20 (red)
HB is 28 blue
TR is 26 (green)
PD is 24 (orange)
BR is 27 (turquoise)
FP is 25 (olive)
*/
int LPP_color=0;
int LPE_color=20;
int HB_color=28;
int TR_color=26;
int PD_color=23;
int BR_color=27;
int FP_color=25;
int HO_color=29;
int RestartLabel=0;
int auto_ntst=15,auto_nmx=200,auto_npr=50,auto_ncol=4;
double auto_ds=.02, auto_dsmax=.5, auto_dsmin=.001;
double auto_rl0=0.0,auto_rl1=2,auto_a0=0.0,auto_a1=1000.;
double auto_xmax=2.5, auto_xmin=-.5,auto_ymax=3.0,auto_ymin=-3.0;
double auto_epsl=1e-4,auto_epsu=1e-4,auto_epss=1e-4;
int auto_var=0;
int is_3_there=0;
int load_all_labeled_orbits=0;
ROTCHK blrtn;
GRABPT grabpt;
extern double MyData[MAXODE];
extern DIAGRAM *bifd;
extern int NBifs;
int AutoTwoParam=0;
int NAutoPar=8;
int Auto_index_to_array[8];
int AutoPar[8];
extern int TipsFlag;
extern unsigned int MyBackColor,MyForeColor,GrFore,GrBack;
void auto_scroll_window();
double atof();
double outperiod[20];
integer UzrPar[20];
int NAutoUzr;
char *get_first();
char *get_next();
/*extern char this_file[100];*/
extern char this_file[XPP_MAX_NAME];
char this_auto_file[200];
char fort3[200];
char fort7[200];
char fort8[200];
char fort9[200];
char TMPSWAP[200];
extern char uvar_names[MAXODE][12];
extern char upar_names[MAXPAR][11];
extern int NUPAR;
unsigned int DONT_XORCross=0;
double XfromAuto,YfromAuto;
int FromAutoFlag=0;
extern int NODE,NEQ;
extern int METHOD;
int HomoFlag=0;
int sparity=0;
double homo_l[100],homo_r[100];
double HOMO_SHIFT=0.0;
extern char uvar_names[MAXODE][12];
extern int storind;
extern int DCURX,DCURXs,DCURY,DCURYs,CURY_OFFs,CURY_OFF;
BIFUR Auto;
ADVAUTO aauto;
int NewPeriodFlag;
AUTOAX Old1p;
AUTOAX Old2p;
/* color plot stuff */
void colset(int type )
{
switch(type) {
case CSEQ:
autocol(SEc);
break;
case CUEQ:
autocol(UEc);
break;
case SPER:
autocol(SPc);
break;
case UPER:
autocol(UPc);
break;
}
}
void pscolset2(int flag2)
{
switch(flag2){
case LPE2:
set_linestyle(LPE_color-19);
break;
case LPP2:
set_linestyle(LPP_color);
break;
case HB2:
set_linestyle(HB_color-19);
break;
case TR2:
set_linestyle(TR_color-19);
break;
case BR2:
set_linestyle(BR_color-19);
break;
case PD2:
set_linestyle(PD_color-19);
break;
case FP2:
set_linestyle(FP_color-19);
break;
default:
set_linestyle(0);
}
}
void colset2(int flag2)
{
LineWidth(2);
switch(flag2){
case LPE2:
autocol(LPE_color);
break;
case LPP2:
autocol(LPP_color);
break;
case HB2:
autocol(HB_color);
break;
case TR2:
autocol(TR_color);
break;
case BR2:
autocol(BR_color);
break;
case PD2:
autocol(PD_color);
break;
case FP2:
autocol(FP_color);
break;
default:
autocol(0);
}
}
void storeautopoint(double x,double y)
{
if(Auto.plot==P_P){
XfromAuto=x;
YfromAuto=y;
FromAutoFlag=1;
}
}
void setautopoint()
{
if(FromAutoFlag)
{
FromAutoFlag=0;
set_val(upar_names[AutoPar[Auto.icp1]],XfromAuto);
set_val(upar_names[AutoPar[Auto.icp2]],YfromAuto);
evaluate_derived();
redraw_params();
}
}
void get_auto_str(xlabel,ylabel)
char *xlabel,*ylabel;
{
sprintf(xlabel,"%s",upar_names[AutoPar[Auto.icp1]]);
switch(Auto.plot){
case HI_P:
case HL_P:
sprintf(ylabel,"%s",uvar_names[Auto.var]);
break;
case NR_P:
sprintf(ylabel,"Norm");
break;
case PE_P:
sprintf(ylabel,"Period");
break;
case FR_P:
sprintf(ylabel,"Frequency");
break;
case P_P:
sprintf(ylabel,"%s",upar_names[AutoPar[Auto.icp2]]);
break;
case AV_P:
sprintf(ylabel,"%s_bar",uvar_names[Auto.var]);
break;
}
}
void draw_ps_axes()
{
char sx[20],sy[20];
set_scale(Auto.xmin,Auto.ymin,Auto.xmax,Auto.ymax);
get_auto_str(sx,sy);
Box_axis(Auto.xmin,Auto.xmax,Auto.ymin,Auto.ymax,sx,sy,0);
}
void draw_svg_axes()
{
char sx[20],sy[20];
set_scale(Auto.xmin,Auto.ymin,Auto.xmax,Auto.ymax);
get_auto_str(sx,sy);
Box_axis(Auto.xmin,Auto.xmax,Auto.ymin,Auto.ymax,sx,sy,0);
}
void draw_bif_axes()
{
int x0=Auto.x0,y0=Auto.y0,ii,i0;
int x1=x0+Auto.wid,y1=y0+Auto.hgt;
char junk[20],xlabel[20],ylabel[20];
clear_auto_plot();
ALINE(x0,y0,x1,y0);
ALINE(x1,y0,x1,y1);
ALINE(x1,y1,x0,y1);
ALINE(x0,y1,x0,y0);
sprintf(junk,"%g",Auto.xmin);
ATEXT(x0,y1+DCURYs+2,junk);
sprintf(junk,"%g",Auto.xmax);
ii=strlen(junk)*DCURXs;
ATEXT(x1-ii,y1+DCURYs+2,junk);
sprintf(junk,"%g",Auto.ymin);
ii=strlen(junk);
i0=9-ii;
if(i0<0)i0=0;
ATEXT(i0*DCURXs,y1,junk);
sprintf(junk,"%g",Auto.ymax);
ii=strlen(junk);
i0=9-ii;
if(i0<0)i0=0;
ATEXT(i0*DCURXs,y0+DCURYs,junk);
get_auto_str(xlabel,ylabel);
ATEXT((x0+x1)/2,y1+DCURYs+2,xlabel);
ATEXT(10*DCURXs,DCURYs,ylabel);
refreshdisplay();
}
int IXVal(x)
double x;
{
double temp=(double)Auto.wid*(x-Auto.xmin)/(Auto.xmax-Auto.xmin);
return ((int) temp+Auto.x0);
}
int IYVal(y)
double y;
{
double temp=(double)Auto.hgt*(y-Auto.ymin)/(Auto.ymax-Auto.ymin);
return(Auto.hgt-(int)temp+Auto.y0);
}
int chk_auto_bnds(int ix,int iy)
{
int x1=Auto.x0,x2=Auto.x0+Auto.wid;
int y1=Auto.y0,y2=Auto.y0+Auto.hgt;
if((ix>=x1)&&(ix<x2)&&(iy>=y1)&&(iy<y2))return 1;
return 0;
}
/* File manipulation stuff */
void renamef(old,new)
char *old,*new;
{
rename(old,new);
}
void cat_fp(fo)
FILE *fo;
{
int c;
rewind(fo);
while((c=getc(fo))!=EOF){
printf("%c",c);
}
}
void cat_file(f)
char *f;
{
FILE *fo;
int c;
printf(" cat %s \n", f);
fo=fopen(f,"r");
while((c=getc(fo))!=EOF){
printf("%c",c);
}
fclose(fo);
}
void copyf(old,new)
char *old,*new;
{
FILE *fo,*fn;
int c;
fo=fopen(old,"r");
fn=fopen(new,"w");
while((c=getc(fo))!=EOF){
putc(c,fn);
}
fclose(fo);
fclose(fn);
}
void appendf(old,new)
char *old,*new;
{
FILE *fo,*fn;
FILE *ft;
int c;
/* printf("Appending old=%s new=%s\n",old,new); */
fo=fopen(old,"r");
fn=fopen(new,"r");
if(fn==NULL){
fclose(fo);
copyf(old,new);
return;
}
ft=fopen(TMPSWAP,"w");
if(ft==NULL){
printf("Can't open %s \n",TMPSWAP);
return;
}
while((c=getc(fo))!= EOF)
putc(c,ft);
fclose(fo);
while((c=getc(fn))!=EOF)
putc(c,ft);
fclose(fn);
fclose(ft);
copyf(TMPSWAP,new);
deletef(TMPSWAP);
}
void deletef(old)
char *old;
{
remove(old);
}
void close_auto(flg) /* labels compatible with A2K */
int flg;
{
char string[1000];
/* if(fp8_is_open){
fclose(fp8);
fp8_is_open=0;
}
*/
if(flg==0) {/*Overwrite*/
sprintf(string,"%s.b",this_auto_file);
renamef(fort7,string);
sprintf(string,"%s.d",this_auto_file);
renamef(fort9,string);
sprintf(string,"%s.s",this_auto_file);
renamef(fort8,string);
}
else {/*APPEND*/
sprintf(string,"%s.b",this_auto_file);
appendf(fort7,string);
sprintf(string,"%s.d",this_auto_file);
appendf(fort9,string);
sprintf(string,"%s.s",this_auto_file);
appendf(fort8,string);
}
deletef(fort8);
fp8_is_open=0;
deletef(fort7);
deletef(fort9);
deletef(fort3);
}
void create_auto_file_name()
{
char string[200];
char *basec,*bname,*dirc,*dname;
basec = strdup(this_file);
dirc = strdup(this_file);
bname = (char*)basename(basec);
dname = (char*)dirname(dirc);
char* HOME = getenv("HOME");
if (HOME == NULL)
{
HOME = dname;
}
sprintf(this_auto_file,"%s/%s",HOME,bname);
}
void open_auto(flg) /* compatible with new auto */
int flg;
{
char string[200];
char *basec,*bname,*dirc,*dname;
basec = strdup(this_file);
dirc = strdup(this_file);
bname = (char*)basename(basec);
dname = (char*)dirname(dirc);
char* HOME = getenv("HOME");
if (HOME == NULL)
{
HOME = dname;
}
sprintf(this_auto_file,"%s/%s",HOME,bname);
sprintf(fort3,"%s/%s",HOME,"fort.3");
sprintf(fort7,"%s/%s",HOME,"fort.7");
sprintf(fort8,"%s/%s",HOME,"fort.8");
sprintf(fort9,"%s/%s",HOME,"fort.9");
sprintf(TMPSWAP,"%s/%s",HOME,"__tmp__");
is_3_there=flg;
if(flg==1){
sprintf(string,"%s.s",this_auto_file);
copyf(string,fort3);
}
}
/* MAIN Running routine Assumes that Auto structure is set up */
void do_auto(iold,isave,itp)
int iold,isave;
int itp;
{
redraw_auto_menus();
set_auto(); /* this sets up all the continuation initialization
it is equivalent to reading in auto parameters
and running init in auto
*/
open_auto(iold); /* this copies the relevant files .s to fort.3 */
go_go_auto(); /* this complets the initialization and calls the
main routines
*/
/* plintf("AUTO opened it==%d\n",itp); */
/* run_aut(Auto.nfpar,itp); THIS WILL CHANGE TO gogoauto stuff */
close_auto(isave); /* this copies fort.8 to the .s file and other
irrelevant stuff
*/
if(RestartLabel!=0){
printf("RestartLabel=%d itp=%d ips=%d nfpar=%d ilp=%d isw=%d isp=%d A2p=%d \n",RestartLabel,Auto.itp, Auto.ips,Auto.nfpar,Auto.ilp,Auto.isw,Auto.isp,AutoTwoParam);
Auto.irs=RestartLabel;
RestartLabel=0;
do_auto(iold,isave, Auto.itp);
}
ping();
redraw_params();
}
void set_auto() /* Caution - need to include NICP here */
{
NAutoUzr=Auto.nper;
init_auto(NODE,Auto.nfpar,Auto.nbc,Auto.ips,Auto.irs,Auto.ilp,Auto.ntst,Auto.isp,
Auto.isw,Auto.nmx,Auto.npr,Auto.ds,Auto.dsmin,
Auto.dsmax,Auto.rl0,Auto.rl1,Auto.a0,Auto.a1,Auto.icp1,
Auto.icp2,Auto.icp3,Auto.icp4,Auto.icp5,Auto.nper,Auto.epsl,Auto.epsu,Auto.epss,Auto.ncol);
}
int auto_name_to_index(s)
char *s;
{
int i,in;
find_variable(s,&in);
if(in==0)return(10);
in=find_user_name(PARAM_BOX,s);
for(i=0;i<NAutoPar;i++)
if(AutoPar[i]==in)return(i);
return(-1);
}
int auto_par_to_name(index,s)
int index;
char *s;
{
if(index==10){
sprintf(s,"T");
return(1);
}
if(index<0||index>8)return(0);
sprintf(s,"%s",upar_names[AutoPar[index]]);
return(1);
}
void auto_per_par()
{
static char *m[]={"0","1","2","3","4","5","6","7","8","9"};
static char key[]="0123456789";
char values[10][MAX_LEN_SBOX];
char bob[100],*ptr;
static char *n[]={"Uzr1","Uzr2","Uzr3","Uzr4","Uzr5",
"Uzr6","Uzr7","Uzr8","Uzr9"};
int status,i,in;
char ch;
ch=(char)auto_pop_up_list("Number",m,key,10,12,Auto.nper,10,10,no_hint,
Auto.hinttxt);
for(i=0;i<10;i++)
if(ch==key[i])Auto.nper=i;
NAutoUzr=Auto.nper;
if(Auto.nper>0){
for(i=0;i<9;i++){
auto_par_to_name(Auto.uzrpar[i],bob);
sprintf(values[i],"%s=%g",bob,Auto.period[i]);
}
status=do_string_box(9,5,2,"AutoPer",n,values,45);
if(status!=0)
for(i=0;i<9;i++){
ptr=get_first(values[i],"=");
in=auto_name_to_index(ptr);
if(in>=0){
Auto.uzrpar[i]=in;
ptr=get_next("@");
Auto.period[i]=atof(ptr);
}
}
}
for(i=0;i<9;i++){
outperiod[i]=Auto.period[i];
UzrPar[i]=Auto.uzrpar[i];
}
}
/* auto parameters are 1-8 (0-7) and since there are only 8, need to associate them
with real xpp parameters for which there may be many
*/
void auto_params()
{
static char *n[]={"*2Par1","*2Par2","*2Par3","*2Par4","*2Par5","*2Par6","*2Par7","*2Par8"};
int status,i,in;
char values[8][MAX_LEN_SBOX];
for(i=0;i<8;i++){
if(i<NAutoPar) sprintf(values[i],"%s",upar_names[AutoPar[i]]);
else values[i][0]='\0';/*sprintf(values[i],"");*/
}
status=do_string_box(8,8,1,"Parameters",n,values,38);
if(status!=0){
for(i=0;i<8;i++){
if(i<NAutoPar){
in=find_user_name(PARAM_BOX,values[i]);
if(in>=0){
AutoPar[i]=in;
in=get_param_index(values[i]);
Auto_index_to_array[i]=in;
/* printf("%d -> %d %s\n",i,in, values[i]); */
}
}
}
}
}
void auto_num_par()
{
static char *n[]={"Ntst","Nmax","NPr","Ds","Dsmin","Ncol","EPSL",
"Dsmax","Par Min","Par Max","Norm Min","Norm Max",
"EPSU","EPSS","IAD","MXBF","IID","ITMX","ITNW","NWTN","IADS"};
int status;
char values[21][MAX_LEN_SBOX];
sprintf(values[0],"%d",Auto.ntst);
sprintf(values[1],"%d",Auto.nmx);
sprintf(values[2],"%d",Auto.npr);
sprintf(values[3],"%g",Auto.ds);
sprintf(values[4],"%g",Auto.dsmin);
sprintf(values[7],"%g",Auto.dsmax);
sprintf(values[8],"%g",Auto.rl0);
sprintf(values[9],"%g",Auto.rl1);
sprintf(values[10],"%g",Auto.a0);
sprintf(values[11],"%g",Auto.a1);
sprintf(values[5],"%d",Auto.ncol);
sprintf(values[6],"%g",Auto.epsl);
sprintf(values[12],"%g",Auto.epsu);
sprintf(values[13],"%g",Auto.epss);
sprintf(values[14],"%d",aauto.iad);
sprintf(values[15],"%d",aauto.mxbf);
sprintf(values[16],"%d",aauto.iid);
sprintf(values[17],"%d",aauto.itmx);
sprintf(values[18],"%d",aauto.itnw);
sprintf(values[19],"%d",aauto.nwtn);
sprintf(values[20],"%d",aauto.iads);
status=do_string_box(21,7,3,"AutoNum",n,values,25);
if(status!=0){
Auto.ntst=atoi(values[0]);
Auto.nmx=atoi(values[1]);
Auto.npr=atoi(values[2]);
Auto.ds=atof(values[3]);
Auto.dsmin=atof(values[4]);
Auto.dsmax=atof(values[7]);
Auto.rl0=atof(values[8]);
Auto.rl1=atof(values[9]);
Auto.a0=atof(values[10]);
Auto.a1=atof(values[11]);
Auto.ncol=atoi(values[5]);
Auto.epsl=atof(values[6]);
Auto.epsu=atof(values[12]);
Auto.epss=atof(values[13]);
aauto.iad=atoi(values[14]);
aauto.mxbf=atoi(values[15]);
aauto.iid=atoi(values[16]);
aauto.itmx=atoi(values[17]);
aauto.itnw=atoi(values[18]);
aauto.nwtn=atoi(values[19]);
aauto.iads=atoi(values[20]);
}
}
void auto_plot_par()
{
static char *m[]={"Hi","Norm","hI-lo","Period","Two par","(Z)oom in","Zoom (O)ut",
"last 1 par", "last 2 par","Fit",
"fRequency","Average","Default","Scroll"};
static char key[]="hniptzo12frads";
char ch;
static char *n[]={"*1Y-axis","*2Main Parm", "*2Secnd Parm", "Xmin", "Ymin",
"Xmax", "Ymax"};
char values[7][MAX_LEN_SBOX];
int status,i;
int ii1,ii2,ji1,ji2;
int i1=Auto.var+1;
char n1[15];
ch=(char)auto_pop_up_list("Plot Type",m,key,14,10,Auto.plot,10,50,
aaxes_hint,Auto.hinttxt);
if(ch==ESC)
return;
for(i=0;i<5;i++)
if(ch==key[i])Auto.plot=i;
if(ch==key[10])Auto.plot=10;
if(ch==key[11])Auto.plot=11;
if(ch==key[5]){
if(auto_rubber(&ii1,&ji1,&ii2,&ji2,RUBBOX)!=0){
auto_zoom_in(ii1,ji1,ii2,ji2);
redraw_diagram();
}
return;
}
if(ch==key[6]){
if(auto_rubber(&ii1,&ji1,&ii2,&ji2,RUBBOX)!=0){
auto_zoom_out(ii1,ji1,ii2,ji2);
redraw_diagram();
}
return;
}
if(ch==key[7]){
load_last_plot(1);
draw_bif_axes();
return;
}
if(ch==key[8]){
load_last_plot(2);
draw_bif_axes();
return;
}
if(ch==key[9]){
auto_fit();
redraw_diagram();
return;
}
if(ch==key[12]){
auto_default();
redraw_diagram();
return;
}
if(ch==key[13]){
auto_scroll_window();
redraw_diagram();
/* printf("I am done scrolling!!"); */
return;
}
ind_to_sym(i1,n1);
sprintf(values[0],"%s",n1);
sprintf(values[1],"%s",upar_names[AutoPar[Auto.icp1]]);
sprintf(values[2],"%s",upar_names[AutoPar[Auto.icp2]]);
sprintf(values[3],"%g",Auto.xmin);
sprintf(values[4],"%g",Auto.ymin);
sprintf(values[5],"%g",Auto.xmax);
sprintf(values[6],"%g",Auto.ymax);
status=do_string_box(7,7,1,"AutoPlot",n,values,31);
if(status!=0){
/* get variable names */
find_variable(values[0],&i);
if(i>0)
Auto.var=i-1;
/* Now check the parameters */
i1=find_user_name(PARAM_BOX,values[1]);
if(i1>=0){
for(i=0;i<NAutoPar;i++){
if(i1==AutoPar[i]){
Auto.icp1=i;
}
}
}
i1=find_user_name(PARAM_BOX,values[2]);
if(i1>=0){
for(i=0;i<NAutoPar;i++){
if(i1==AutoPar[i]){
Auto.icp2=i;
}
}
}
Auto.xmin=atof(values[3]);
Auto.ymin=atof(values[4]);
Auto.xmax=atof(values[5]);
Auto.ymax=atof(values[6]);
draw_bif_axes();
if(Auto.plot<4)keep_last_plot(1);
if(Auto.plot==4)keep_last_plot(2);
}
}
void auto_default()
{
Auto.xmin=auto_xmin;
Auto.xmax=auto_xmax;
Auto.ymin=auto_ymin;
Auto.ymax=auto_ymax;
}
void auto_fit()
{
double xlo=Auto.xmin,xhi=Auto.xmax,ylo=Auto.ymin,yhi=Auto.ymax;
bound_diagram(&xlo,&xhi,&ylo,&yhi);
Auto.xmin=xlo;
Auto.xmax=xhi;
Auto.ymin=ylo;
Auto.ymax=yhi;
}
void auto_zoom_in(i1,j1,i2,j2)
int i1,j1,i2,j2;
{
double x1,y1,x2,y2;
int temp;
if(i1>i2){temp=i1;i1=i2;i2=temp;}
if(j2>j1){temp=j1;j1=j2;j2=temp;}
double dx = (Auto.xmax-Auto.xmin);
double dy = (Auto.ymax-Auto.ymin);
x1 = Auto.xmin+(double)(i1-Auto.x0)*(dx)/(double)Auto.wid;
x2 = Auto.xmin+(double)(i2-Auto.x0)*(dx)/(double)Auto.wid;
y1 = Auto.ymin+(double)(Auto.hgt+Auto.y0-j1)*(dy)/(double)Auto.hgt;
y2 = Auto.ymin+(double)(Auto.hgt+Auto.y0-j2)*(dy)/(double)Auto.hgt;
if((i1==i2)||(j1==j2))
{
if (dx < 0){dx=-dx;}
if (dy < 0){dy=-dy;}
dx = dx/2;
dy = dy/2;
/*Shrink by thirds and center (track) about the point clicked*/
Auto.xmin=x1-dx/2;
Auto.xmax=x1+dx/2;
Auto.ymin=y1-dy/2;
Auto.ymax=y1+dy/2;
}
else
{
Auto.xmin=x1;
Auto.ymin=y1;
Auto.xmax=x2;
Auto.ymax=y2;
}
}
void auto_zoom_out(i1,j1,i2,j2)
int i1,j1,i2,j2;
{
double x1=0.0,y1=0.0,x2=0.0,y2=0.0;
int temp;