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eme.c
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// Copyright (c) <2012> <Leif Asbrink>
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without restriction,
// including without limitation the rights to use, copy, modify,
// merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.
#include "osnum.h"
#include "globdef.h"
#include <ctype.h>
#include "uidef.h"
#include "screendef.h"
#include "keyboard_def.h"
#include "thrdef.h"
#if OSNUM == OSNUM_WINDOWS
#include "wscreen.h"
#endif
#if OSNUM == OSNUM_LINUX
#include "lscreen.h"
#endif
extern void users_eme(void);
#define MAX_EMEPARM 4
extern char *eme_own_info_filename;
extern char *eme_allcalls_filename;
extern char *eme_emedta_filename;
extern char *eme_dirskd_filename;
extern char *eme_dxdata_filename;
extern char *eme_call3_filename;
extern char *eme_error_report_file;
#define EGH 18
#define DX_SEARCH_LINES 2
int eg_old_y1;
int eg_old_y2;
int eg_old_x1;
int eg_old_x2;
void make_eme_graph(int clear_old);
int eme_graph_scro;
int emeparm_int[MAX_EMEPARM];
float *emeparm_float;
char *emeparm_text[MAX_EMEPARM+1]={"Auto init", //0
"UTC correction", //1
"Latitude (+ for N)", //2
"Longitude (+ for E)", //3
"Locator"};
char tmp_locator[7];
char dx_locator[7];
int dx_no;
FILE *locerr_file;
float cos_laref;
float sin_laref;
float cos_dxlat;
float sin_dxlat;
void locator_to_latlong(void);
void dist_az(float *dist, float *azimuth, float lat, float lon,
float dxlat, float dxlon);
void latlong_to_locator(float lon, float lat);
float dx_lat;
float tmp_lat;
float dx_lon;
float tmp_lon;
float dx_dist;
float dx_az;
int dxflag;
#define MAX_SUGGESTED 6
int eg_move_flag;
int suggested_calls[MAX_SUGGESTED];
int suggested_calls_counter;
char dx_callsign[EG_DX_CHARS+1];
#define MAX_DXCALLS 10000
#define RAD (PI_L/180)
void check_eg_borders(void)
{
current_graph_minh=eg_vsiz;
current_graph_minw=eg_hsiz;
check_graph_placement((void*)(&eg));
set_graph_minwidth((void*)(&eg));
}
void clear_search_result_box(void)
{
lir_fillbox(eg.xleft+1,egbutt[EG_DX].y1+3+text_height,
eg.xright-eg.xleft-1,eg.ybottom-egbutt[EG_DX].y1-3-text_height,0);
settextcolor(10);
lir_pixwrite(egbutt[EG_DX].x1+text_width/2,egbutt[EG_DX].y1+2,dx_callsign);
settextcolor(7);
}
void show_dx_location(void)
{
char s[80];
settextcolor(10);
lir_pixwrite(egbutt[EG_LOC].x1+text_width/2,egbutt[EG_LOC].y1+2,dx_locator);
sprintf(s,"%d ",(int)(dx_az/RAD));
s[3]=0;
lir_pixwrite(eg.xleft+text_width/2,egbutt[EG_LOC].y1+2,s);
sprintf(s,"%d ",(int)(dx_dist));
s[6]=0;
lir_pixwrite(egbutt[EG_LOC].x2+text_width/2,egbutt[EG_LOC].y1+2,s);
settextcolor(7);
clear_search_result_box();
}
void new_eme_loc(void)
{
int i;
for(i=0; i<6; i++)tmp_locator[i]=numinput_txt[i];
locator_to_latlong();
for(i=0; i<6; i++)dx_locator[i]=tmp_locator[i];
dx_locator[6]=0;
dx_lat=tmp_lat;
dx_lon=tmp_lon;
dxflag=1;
eme_time=0;
cos_dxlat=cos(RAD*dx_lat);
sin_dxlat=sin(RAD*dx_lat);
dist_az(&dx_dist, &dx_az, emeparm_float[2],emeparm_float[3], dx_lat, dx_lon);
suggested_calls_counter=1;
show_dx_location();
numinput_flag=-1;
}
void clear_dx(void)
{
char s[80];
int i;
for(i=0; i<EG_DX_CHARS; i++)s[i]=' ';
s[EG_DX_CHARS]=0;
lir_pixwrite(egbutt[EG_DX].x1+text_width/2,egbutt[EG_DX].y1+2,s);
dxflag=0;
}
void new_dx_result(void)
{
char s[256];
int i, j, k, m;
int line, pos;
if(suggested_calls_counter == 0)
{
clear_dx();
return;
}
if(suggested_calls_counter == 1)
{
for(i=0; i<EG_DX_CHARS; i++)dx_callsign[i]=dx[suggested_calls[0]].call[i];
tmp_lon=-dx[suggested_calls[0]].lon;
tmp_lat=dx[suggested_calls[0]].lat;
latlong_to_locator(tmp_lon,tmp_lat);
for(i=0; i<6; i++)numinput_txt[i]=tmp_locator[i];
new_eme_loc();
}
else
{
for(i=0; i<EG_DX_CHARS; i++)
{
dx_callsign[i]=' ';
}
}
dx_callsign[EG_DX_CHARS]=0;
k=0;
for(j=0; j<DX_SEARCH_LINES; j++)
{
for(i=0; i<EGH-1; i++)
{
s[k]=' ';
k++;
}
s[k]=0;
k++;
}
if(suggested_calls_counter > 1)
{
line=0;
pos=0;
for(i=0; i<suggested_calls_counter; i++)
{
k=suggested_calls[i];
j=0;
while(dx[k].call[j] != ' ')j++;
if(dx[k].call[j] == ' ')j--;
if(pos+j >= EGH-1)
{
pos=0;
line++;
if(line >= DX_SEARCH_LINES)
{
j=0;
goto nomore;
}
}
m=0;
while(m <= j)
{
s[EGH*line+pos]=dx[k].call[m];
m++;
pos++;
}
pos++;
}
nomore:;
if(j==0)settextcolor(13);
}
clear_search_result_box();
for(i=0; i<DX_SEARCH_LINES; i++)
{
lir_pixwrite(eg.xleft+text_width/2,egbutt[EG_DX].y1+3+(i+1)*text_height,
&s[i*EGH]);
}
if(j==0)settextcolor(7);
}
void star_match_dx_a(void)
{
int i, j, k, ia, ib, ib0;
// The first character is a star.
// Find the length of the fragment.
ib0=1;
while( ib0 < numinput_curpos && numinput_txt[ib0] != '*')ib0++;
// Search for calls containing the string.
for(i=0; i<dx_no; i++)
{
ia=1;
j=0;
ib=ib0;
get_string:;
while(dx[i].call[j] != numinput_txt[ia] && j < CALLSIGN_CHARS )j++;
if(j < CALLSIGN_CHARS)
{
// We have found the first character.
for(k=ia+1; k<ib; k++)
{
j++;
if(j >= CALLSIGN_CHARS)goto fail;
if(dx[i].call[j] != numinput_txt[k] && numinput_txt[k] != '?')goto fail;
}
// The string matches.
// If there no more '*' in the search string, decide if sucess or fail.
if(ib==numinput_curpos)
{
j++;
if(j == CALLSIGN_CHARS)goto sucess;
if(dx[i].call[j] == ' ')goto sucess;
goto fail;
}
ib++;
if(ib==numinput_curpos)goto sucess;
ia=ib;
while( ib < numinput_curpos && numinput_txt[ib] != '*')ib++;
goto get_string;
sucess:;
suggested_calls[suggested_calls_counter]=i;
suggested_calls_counter++;
if(suggested_calls_counter >= MAX_SUGGESTED)goto maxsug;
}
fail:;
}
maxsug:;
new_dx_result();
}
void star_match_dx_b(void)
{
int i, j, k, ia, ib, ib0;
// The first character is not a star.
// Find the length of the fragment.
ib0=1;
while( ib0 < numinput_curpos && numinput_txt[ib0] != '*')ib0++;
// Search for calls beginning with the fragment string.
for(i=0; i<dx_no; i++)
{
for(k=0; k<ib0; k++)
{
if(dx[i].call[k] != numinput_txt[k] && numinput_txt[k] != '?')goto fail;
}
ib=ib0+1;
if(ib==numinput_curpos)goto sucess;
j=0;
get_string:;
ia=ib;
while( ib < numinput_curpos && numinput_txt[ib] != '*')ib++;
while(dx[i].call[j] != numinput_txt[ia] && j < CALLSIGN_CHARS )j++;
if(j < CALLSIGN_CHARS)
{
// We have found the first character.
for(k=ia+1; k<ib; k++)
{
j++;
if(j >= CALLSIGN_CHARS)goto fail;
if(dx[i].call[j] != numinput_txt[k] && numinput_txt[k] != '?')goto fail;
}
// The string matches.
// If there no more '*' in the search string, decide if sucess or fail.
if(ib==numinput_curpos)
{
j++;
if(j == CALLSIGN_CHARS)goto sucess;
if(dx[i].call[j] == ' ')goto sucess;
goto fail;
}
ib++;
if(ib==numinput_curpos)goto sucess;
goto get_string;
sucess:;
suggested_calls[suggested_calls_counter]=i;
suggested_calls_counter++;
if(suggested_calls_counter >= MAX_SUGGESTED)goto maxsug;
}
fail:;
}
maxsug:;
new_dx_result();
}
void new_eme_dx(void)
{
int i,j,k;
pause_thread(THREAD_SCREEN);
hide_mouse(eg.xleft,eg.xright,eg.ytop,eg.ybottom);
// Search the data base for the call sign in numinput_txt.
// Just return if we have 2 or less characters
numinput_flag=-1;
suggested_calls_counter=0;
// There may be '*' and '?' in the call.
// Clean up the search string in case '?' are next to '*'
// or there are multiple '*'.
i=0;
while(i<numinput_curpos)
{
if(numinput_txt[i]=='*')
{
while(i>0 && numinput_txt[i-1] == '*')i--;
while(i>0 && numinput_txt[i-1] == '?')
{
i--;
k=i;
while(k<numinput_curpos)
{
numinput_txt[k]=numinput_txt[k+1];
k++;
}
numinput_curpos--;
if(i>0)i--;
}
}
if(numinput_txt[i]=='*')
{
while(i<numinput_curpos-1 &&
(numinput_txt[i+1] == '?' || numinput_txt[i+1] == '*'))
{
k=i+1;
while(k<numinput_curpos)
{
numinput_txt[k]=numinput_txt[k+1];
k++;
}
numinput_curpos--;
}
}
i++;
}
if(numinput_curpos<=2)
{
clear_dx();
goto new_eme_dx_x;
}
// If the first character is '*' call a special routine.
if(numinput_txt[0] == '*')
{
star_match_dx_a();
goto new_eme_dx_x;
}
// If there is any '*' at all, call another special routine
for(i=0; i<numinput_curpos; i++)
{
if(numinput_txt[i] == '*')
{
star_match_dx_b();
goto new_eme_dx_x;
}
}
// Search for matching calls with fixed positions for the
// characters.
for(i=0; i<dx_no; i++)
{
j=0;
while(j<numinput_curpos &&
(numinput_txt[j] == '?' || numinput_txt[j]==dx[i].call[j]) )j++;
if(j == numinput_curpos &&
(dx[i].call[j] == ' ' || numinput_curpos >= CALLSIGN_CHARS) )
{
suggested_calls[suggested_calls_counter]=i;
suggested_calls_counter++;
if(suggested_calls_counter >= MAX_SUGGESTED)goto maxsug;
}
}
maxsug:;
new_dx_result();
new_eme_dx_x:;
resume_thread(THREAD_SCREEN);
}
void help_on_eme_graph(void)
{
int msg_no;
int event_no;
// Set msg invalid in case we are not in any select area.
msg_no=-1;
for(event_no=0; event_no<MAX_EGBUTT; event_no++)
{
if( egbutt[event_no].x1 <= mouse_x &&
egbutt[event_no].x2 >= mouse_x &&
egbutt[event_no].y1 <= mouse_y &&
egbutt[event_no].y2 >= mouse_y)
{
switch (event_no)
{
case EG_TOP:
case EG_BOTTOM:
case EG_LEFT:
case EG_RIGHT:
msg_no=101;
break;
case EG_MINIMISE:
msg_no=70;
break;
case EG_LOC:
msg_no=71;
break;
case EG_DX:
msg_no=72;
break;
}
}
}
help_message(msg_no);
}
void mouse_continue_eme_graph(void)
{
int i, j;
switch (mouse_active_flag-1)
{
case EG_TOP:
if(eg.ytop!=mouse_y)goto egm;
break;
case EG_BOTTOM:
if(eg.ybottom!=mouse_y)goto egm;
break;
case EG_LEFT:
if(eg.xleft!=mouse_x)goto egm;
break;
case EG_RIGHT:
if(eg.xright==mouse_x)break;
egm:;
pause_screen_and_hide_mouse();
graph_borders((void*)&eg,0);
eg_move_flag=1;
if(eg_oldx==-10000)
{
eg_oldx=mouse_x;
eg_oldy=mouse_y;
}
else
{
i=mouse_x-eg_oldx;
j=mouse_y-eg_oldy;
eg_oldx=mouse_x;
eg_oldy=mouse_y;
eg.ytop+=j;
eg.ybottom+=j;
eg.xleft+=i;
eg.xright+=i;
check_eg_borders();
}
graph_borders((void*)&eg,15);
resume_thread(THREAD_SCREEN);
break;
default:
goto await_release;
}
if(leftpressed == BUTTON_RELEASED)goto finish;
return;
await_release:;
if(leftpressed != BUTTON_RELEASED) return;
switch (mouse_active_flag-1)
{
case EG_MINIMISE:
eg.minimise^=1;
break;
case EG_LOC:
for(i=0; i<EG_DX_CHARS; i++) dx_callsign[i]=' ';
mouse_active_flag=1;
numinput_chars=EG_LOC_CHARS;
numinput_xpix=egbutt[EG_LOC].x1+text_width/2;
numinput_ypix=egbutt[EG_LOC].y1+2;
erase_numinput_txt();
numinput_flag=TEXT_PARM;
par_from_keyboard_routine=new_eme_loc;
return;
case EG_DX:
mouse_active_flag=1;
numinput_chars=EG_DX_CHARS;
numinput_xpix=egbutt[EG_DX].x1+text_width/2;
numinput_ypix=egbutt[EG_DX].y1+2;
erase_numinput_txt();
numinput_flag=TEXT_PARM;
par_from_keyboard_routine=new_eme_dx;
return;
default:
lirerr(872);
break;
}
finish:;
leftpressed=BUTTON_IDLE;
mouse_active_flag=0;
make_eme_graph(TRUE);
if(eg.minimise==0)calculate_moon_data();
eg_oldx=-10000;
}
void mouse_on_eme_graph(void)
{
int event_no;
// First find out is we are on a button or border line.
for(event_no=0; event_no<MAX_EGBUTT; event_no++)
{
if( egbutt[event_no].x1 <= mouse_x &&
egbutt[event_no].x2 >= mouse_x &&
egbutt[event_no].y1 <= mouse_y &&
egbutt[event_no].y2 >= mouse_y)
{
eg_old_y1=eg.ytop;
eg_old_y2=eg.ybottom;
eg_old_x1=eg.xleft;
eg_old_x2=eg.xright;
mouse_active_flag=1+event_no;
current_mouse_activity=mouse_continue_eme_graph;
return;
}
}
// Not button or border.
// Do nothing.
current_mouse_activity=mouse_nothing;
mouse_active_flag=1;
}
void make_eme_graph(int clear_old)
{
int xj,xi,yj,yi;
pause_thread(THREAD_SCREEN);
if(clear_old)
{
hide_mouse(eg_old_x1,eg_old_x2,eg_old_y1,eg_old_y2);
lir_fillbox(eg_old_x1,eg_old_y1,eg_old_x2-eg_old_x1+1,
eg_old_y2-eg_old_y1+1,0);
}
eg_move_flag=0;
if(eg.minimise == 0 && eme_flag == 2)
{
eg_hsiz=EGH*text_width;
eg_vsiz=(4+DX_SEARCH_LINES)*text_height+3;
eme_active_flag=1;
cos_laref=cos(RAD*emeparm_float[2]);
sin_laref=sin(RAD*emeparm_float[2]);
}
else
{
eg_hsiz=2*text_width-1;
eg_vsiz=1.5*text_height-1;
eme_active_flag=0;
}
eg_flag=1;
check_eg_borders();
clear_button(egbutt, MAX_EGBUTT);
hide_mouse(eg.xleft,eg.xright,eg.ytop,eg.ybottom);
scro[eme_graph_scro].no=EME_GRAPH;
scro[eme_graph_scro].x1=eg.xleft;
scro[eme_graph_scro].x2=eg.xright;
scro[eme_graph_scro].y1=eg.ytop;
scro[eme_graph_scro].y2=eg.ybottom;
egbutt[EG_LEFT].x1=eg.xleft;
egbutt[EG_LEFT].x2=eg.xleft+2;
egbutt[EG_LEFT].y1=eg.ytop;
egbutt[EG_LEFT].y2=eg.ybottom;
egbutt[EG_RIGHT].x1=eg.xright-2;
egbutt[EG_RIGHT].x2=eg.xright;
egbutt[EG_RIGHT].y1=eg.ytop;
egbutt[EG_RIGHT].y2=eg.ybottom;
egbutt[EG_TOP].x1=eg.xleft;
egbutt[EG_TOP].x2=eg.xright;
egbutt[EG_TOP].y1=eg.ytop;
egbutt[EG_TOP].y2=eg.ytop+2;
egbutt[EG_BOTTOM].x1=eg.xleft;
egbutt[EG_BOTTOM].x2=eg.xright;
egbutt[EG_BOTTOM].y1=eg.ybottom-2;
egbutt[EG_BOTTOM].y2=eg.ybottom;
// Draw the border lines
graph_borders((void*)&eg,7);
eg_oldx=-10000;
settextcolor(7);
xj=eg.xleft+text_width-1;
if(eme_active_flag != 0)
{
xi=xj+3.5*text_width;
yi=eg.ytop+2*text_height;
egbutt[EG_LOC].x1=xi;
egbutt[EG_LOC].x2=xi+text_width*(EG_LOC_CHARS+0.5);
egbutt[EG_LOC].y1=yi;
yi+=text_height;
xi-=2*text_width;
egbutt[EG_LOC].y2=yi;
lir_hline(egbutt[EG_LOC].x1,egbutt[EG_LOC].y1,egbutt[EG_LOC].x2,7);
if(kill_all_flag) return;
lir_hline(egbutt[EG_LOC].x1,egbutt[EG_LOC].y2,egbutt[EG_LOC].x2,7);
if(kill_all_flag) return;
lir_line(egbutt[EG_LOC].x1,egbutt[EG_LOC].y1,egbutt[EG_LOC].x1,
egbutt[EG_LOC].y2,7);
if(kill_all_flag) return;
lir_line(egbutt[EG_LOC].x2,egbutt[EG_LOC].y1,egbutt[EG_LOC].x2,
egbutt[EG_LOC].y2,7);
if(kill_all_flag) return;
yi+=2;
yj=yi+text_height/2;
egbutt[EG_DX].x1=xi;
egbutt[EG_DX].x2=xi+text_width*(EG_DX_CHARS+0.5);
egbutt[EG_DX].y1=yi;
yi+=text_height;
egbutt[EG_DX].y2=yi;
yi+=2;
if(dxflag != 0)
{
show_dx_location();
}
lir_hline(egbutt[EG_DX].x1,egbutt[EG_DX].y1,egbutt[EG_DX].x2,7);
if(kill_all_flag) return;
lir_hline(egbutt[EG_DX].x1,egbutt[EG_DX].y2,egbutt[EG_DX].x2,7);
if(kill_all_flag) return;
lir_line(egbutt[EG_DX].x1,egbutt[EG_DX].y1,egbutt[EG_DX].x1,
egbutt[EG_DX].y2,7);
if(kill_all_flag) return;
lir_line(egbutt[EG_DX].x2,egbutt[EG_DX].y1,egbutt[EG_DX].x2,
egbutt[EG_DX].y2,7);
if(kill_all_flag) return;
}
else
{
yj=eg.ybottom-text_height/2-1;
}
make_button(xj,yj,egbutt,EG_MINIMISE,'X');
resume_thread(THREAD_SCREEN);
make_modepar_file(GRAPHTYPE_EG);
}
void init_eme_graph(void)
{
FILE *file;
int i, j, k;
char s[80];
// In case we process saved data from disk, the real time
// moon window is useless, just skip it.
if(savefile_parname[0] != 0)return;
s[0]=0;
if (read_modepar_file(GRAPHTYPE_EG) == 0)
{
eg.xleft=15*text_width;
eg.xright=17*text_width;
eg.ybottom=0.7*screen_height;
eg.ytop=eg.ybottom-1.5*text_height;
eg.minimise=1;
}
dxflag=0;
if(eme_flag == 2)
{
if(dx!=NULL)
{
lirerr(81975);
return;
}
file = fopen(eme_dxdata_filename, "r");
if(file == NULL)
{
lirerr(1130);
return;
}
k=fread(s,1,1,file);
j=0;
while(k!=0 && s[j] != 10 && s[j] != 13)
{
j++;
k=fread(&s[j],1,1,file);
if(j >= 80)
{
err1131:;
lirerr(1131);
return;
}
}
if(j == 0 || k == 0 || j > 79)goto err1131;
s[j]=0;
sscanf(s,"%d",&dx_no);
if(dx_no > MAX_DXCALLS)goto err1131;
dx=malloc(dx_no*sizeof(DXDATA));
if(dx == NULL)
{
lirerr(1132);
return;
}
i=0;
read_dx:;
k=fread(s,1,1,file);
j=0;
while(k!=0 && (s[j] == 10 || s[j] == 13)) k=fread(s,1,1,file);
if(k == 0)
{
lirerr(1131);
return;
}
while(k!=0 && s[j] != 10 && s[j] != 13)
{
j++;
k=fread(&s[j],1,1,file);
if(j >= 80)
{
lirerr(1131);
return;
}
}
if(j == 0 || k == 0 || j > 79)
{
lirerr(1131);
return;
}
s[j]=0;
for(k=0; k<CALLSIGN_CHARS; k++)dx[i].call[k]=s[k];
sscanf(&s[CALLSIGN_CHARS],"%f %f",&dx[i].lat,&dx[i].lon);
i++;
if(i<dx_no)goto read_dx;
fclose(file);
}
eme_graph_scro=no_of_scro;
make_eme_graph(FALSE);
no_of_scro++;
if(no_of_scro >= MAX_SCRO)lirerr(89);
}
void dist_az(float *dist, float *azimuth, float lat, float lon,
float dxlat, float dxlon)
{
float sin_dxl, cos_dxl;
float sin_lat, cos_lat;
float t1,t2,t3;
cos_dxl=cos(PI_L*dxlat/180);
sin_dxl=sin(PI_L*dxlat/180);
cos_lat=cos(PI_L*lat/180);
sin_lat=sin(PI_L*lat/180);
t1=PI_L*(lon-dxlon)/180;
t2=sin_dxl*sin_lat+cos_dxl*cos_lat*cos(t1);
if(fabs(t2)>1)t2=1;
t2=atan2(sqrt(1-t2*t2),t2);
dist[0]=t2*6366;
if(dist[0] < 5)
{
dist[0]=0;
azimuth[0]=0;
return;
}
if(t1<-PI_L)t1+=2*PI_L;
if(t1> PI_L)t1-=2*PI_L;
t3=(sin_dxl-sin_lat*cos(t2))/(cos_lat*sin(t2));
if(fabs(t3) > 1)t3=1;
azimuth[0]=atan2(sqrt(1-t3*t3),t3);
if(t1 == 0)
{
if(dxlat < lat)
{
azimuth[0]=PI_L;
}
else
{
azimuth[0]=2*PI_L;
}
}
else
{
if(t1 > 0)azimuth[0]=2*PI_L-azimuth[0];
}
}
void check_latest_dx(void)
{
char s[80];
int i, j, k;
float dist, az;
// Check that the latest call sign is not already in the data base.
for(i=0; i<dx_no; i++)
{
j=0;
while(j<CALLSIGN_CHARS && dx[i].call[j] == dx[dx_no].call[j])j++;
if(j==CALLSIGN_CHARS)
{
// We have located a duplicate call sign.
// Just ignore it in case the location is the same (or close to)
// If longitude or latitude is 1000 for one, use the other.
if(dx[i].lon == 1000)dx[i].lon=dx[dx_no].lon;
if(dx[i].lat == 1000)dx[i].lat=dx[dx_no].lat;
if(dx[dx_no].lon == 1000)dx[dx_no].lon=dx[i].lon;
if(dx[dx_no].lat == 1000)dx[dx_no].lat=dx[i].lat;
if(fabs(dx[i].lon-dx[dx_no].lon) > 0.1 ||
fabs(dx[i].lat-dx[dx_no].lat) > 0.1)
{
dist_az(&dist, &az, dx[i].lon,dx[i].lat,dx[dx_no].lon,dx[dx_no].lat);
if(dist > 200)
{
if(locerr_file == NULL)
{
locerr_file = fopen(eme_error_report_file, "w");
if(locerr_file == NULL)
{
lirerr(1133);
return;
}
}
for(k=0; k<CALLSIGN_CHARS; k++)s[k]=dx[i].call[k];
s[CALLSIGN_CHARS]=0;
fprintf(locerr_file,
"%s %d km lon %.2f lat %.2f [lon %.2f lat %.2f]\n",
s, (int)(dist), dx[i].lon, dx[i].lat,
dx[dx_no].lon, dx[dx_no].lat);
}
}
dx[i].lon=0.5*(dx[i].lon+dx[dx_no].lon);
dx[i].lat=0.5*(dx[i].lat+dx[dx_no].lat);
dx_no--;
}
}
}
void latlong_to_locator(float lon, float lat)
{
int i;
float t1,t2;
t1=lon;
t2=lat;
t1+=180;
i=t1/20;
t1=t1-20*i;
tmp_locator[0]=i+'A';
i=t1/2;
t1=t1-2*i;
tmp_locator[2]=i+'0';
t1*=12;
tmp_locator[4]=t1+'a';
t2+=90;
i=t2/10;
t2=t2-10*i;
tmp_locator[1]=i+'A';
i=t2;
tmp_locator[3]=i+'0';
t2-=i;
t2*=24;
tmp_locator[5]=t2+'a';
}
void locator_to_latlong(void)
{
int flg;
float lat, lon;
#ifdef __NetBSD__
tmp_locator[0]=toupper((int)(unsigned char)tmp_locator[0]);
tmp_locator[1]=toupper((int)(unsigned char)tmp_locator[1]);
tmp_locator[4]=tolower((int)(unsigned char)tmp_locator[4]);
tmp_locator[5]=tolower((int)(unsigned char)tmp_locator[5]);
#else
tmp_locator[0]=toupper(tmp_locator[0]);
tmp_locator[1]=toupper(tmp_locator[1]);
tmp_locator[4]=tolower(tmp_locator[4]);
tmp_locator[5]=tolower(tmp_locator[5]);
#endif
flg=0;
if(tmp_locator[0]<'A')
{
tmp_locator[0]='A';
flg=1;
}
if(tmp_locator[0]>'R')
{
tmp_locator[0]='R';
flg=1;
}
if(tmp_locator[1]<'A')
{
tmp_locator[1]='A';
flg=1;
}
if(tmp_locator[1]>'R')
{
tmp_locator[1]='R';
flg=1;
}
if(tmp_locator[2]<'0' || tmp_locator[2]>'9')flg=1;
if(tmp_locator[3]<'0' || tmp_locator[3]>'9')flg=1;
if(flg != 0)
{
tmp_locator[2]='4';
tmp_locator[3]='4';
tmp_locator[4]='a';
tmp_locator[5]='a';
}
if( tmp_locator[4]<'a' ||
tmp_locator[4]>'x' ||
tmp_locator[5]<'a' ||
tmp_locator[5]>'x' )
{
tmp_locator[4]='l';
tmp_locator[5]='l';
}
lon=tmp_locator[4]-'a'+0.5;
lon/=12;
lon-=180;
lon+=(tmp_locator[2]-'0')*2;
lon+=(tmp_locator[0]-'A')*20;
if(fabs(lon)>180.001)lon=0;
lat=tmp_locator[5]-'a'+0.5;
lat/=24;
lat-=90;
lat+=(tmp_locator[3]-'0');
lat+=(tmp_locator[1]-'A')*10;
if(fabs(lat)>90.001)lat=0;
tmp_lon=lon;
tmp_lat=lat;
}
// eme_flag=0 Nothing loaded. Load all data in case the first parameter =1
// eme_flag=1 Nothing loaded. Load all data unconditionally.
// eme_flag=2 Database loaded. Ask if it should be changed.
void read_eme_database(void)
{
int i, j, k, m;
char s[80];
FILE *own_file;