deangran@cacofonix.cs.uoregon.edu (Dean Micheal Grandquist) (06/30/91)
I am reposting the world map program that some posted not to long
ago (I should know who, but I don't 8-).
If you need the data files they are on ab20.larc.nasa.gov under
amiga/graphics/wdb/wdb?.lzh.
I also have an lharc program for unix if you need one. (I know I will
regret this later 8-)
You could also look to see if archie knows of lharc closer to you then I am.
To compile wdb I used:
gcc g -o wdb wdb.o -lXaw -lXt -lXmu -lX11 -lXext
To uncompress the map files use:
xlharc x wdb?.lzh
Then to run wdb use:
wdb wdb.?.all
And here is the source:
BEGIN---------------------------------------------------------------
/***************** Display WorldData Base ********************/
#include <stdio.h>
#include <X11/StringDefs.h>
#include <X11/Intrinsic.h>
#include <X11/Shell.h>
#include <X11/Xaw/Form.h>
#include <X11/Xaw/Scrollbar.h>
#include <X11/Xaw/Command.h>
#include <X11/Xaw/Label.h>
#include <X11/Xaw/Simple.h>
#define DEF_BLACK BlackPixel(dsp, DefaultScreen(dsp))
#define DEF_WHITE WhitePixel(dsp, DefaultScreen(dsp))
#define DEF_GC DefaultGC(dsp, DefaultScreen(dsp))
#define DEF_CMAP DefaultColormap(dsp, DefaultScreen(dsp))
#define ABS(X) (((X)<0)?-(X):(X))
#define QSPAN 90*6000
#define HSPAN QSPAN*2
#define WSPAN QSPAN*4
#define PCount 1024
char *PickFile();
void PlotProc();
void QuitProc();
void LatProc();
void LonProc();
void MagProc();
void ButtonProc();
typedef struct { short Code, Lat, Lon; } PNT ;
#define PNTSiz sizeof(PNT)
PNT *p;
double zoom, stretch = 1.2;
long Latitude, Longitude,
Lat, Lon, X_Scale, Y_Scale,
ymax, ymin, xmax, xmin, xspan, yspan;
short CTable[] = {
0x0000,0x0ddd,0x0d00,0x00a0,0x0ff0,0x05f5,0x0aaf,0x033f };
long colr[8];
XtAppContext app;
Widget top, view;
Widget control, panel;
Widget lat_sc, lat_text, lat_lab;
Widget lon_sc, lon_text, lon_lab;
Widget mag_sc, mag_text, mag_lab;
Widget strch_text, strch_lab;
Widget plot_btn, quit_btn, file_lab;
Display *dsp;
Visual *vis;
Window Bwindow;
GC drawGC;
Colormap Cmap;
int NumCells;
Arg arg[30];
Cardinal argcnt;
short NewLon, NewLat, deflt = 1;
unsigned short newCenter = 0;
char *infile;
XtCallbackRec callplot[] = {
{PlotProc, NULL},
{NULL, NULL}
};
XtCallbackRec callquit[] = {
{QuitProc, NULL},
{NULL, NULL}
};
XtCallbackRec calllat[] = {
{LatProc, NULL},
{NULL, NULL}
};
XtCallbackRec calllon[] = {
{LonProc, NULL},
{NULL, NULL}
};
XtCallbackRec callmag[] = {
{MagProc, NULL},
{NULL, NULL}
};
/************** convert Minutes to "ddd'mm" *************/
void
MinToStr(str, min)
char *str;
long min;
{
short deg;
deg = min / 60;
min = min - deg * 60;
if(min < 0)
min = -min;
sprintf(str,"%d'%d",deg,min);
}
/************* Convert "ddd'mm" to mins ***********/
long
DegToMin(s)
char *s;
{
short deg,min;
char str[10],*strchr(),*cp;
strcpy(str,s);
if(cp = strchr(str,'\047'))
{ *cp = '\0';
min = atoi(++cp);
}
else
min = 0;
if((deg = atoi(str)) < 0)
min = -min;
return(deg * 60 + min);
}
void
SetSpecs()
{
Longitude = Lon * 100;
Latitude = Lat * 100;
/* 120/100 is correction for vertical stretch of 1080 Monitor */
X_Scale = zoom * 100.0 * stretch * 320.0 / 10800.0;
Y_Scale = zoom * 100.0 * 200.0 / 5400.0;
ymax = QSPAN/zoom;
ymin = -ymax;
xmax = HSPAN / (zoom * stretch);
xmin = -xmax;
xspan = xmax - xmin;
yspan = ymax - ymin;
}
/*
* Added this function to get shared colormap entries, or the closest existing
* entry. -EJB
*/
void
FindColor(colr)
XColor *colr;
{
int i, match;
double rd, gd, bd, dist, mindist;
int cindx;
XColor def_colrs[256];
match = XAllocColor(dsp, Cmap, colr);
if (match == 0)
{
for (i=0; i<NumCells; i++)
{
def_colrs[i].pixel = i;
}
XQueryColors(dsp, Cmap, def_colrs, NumCells);
mindist = 65536.0 * 65536.0;
cindx = colr->pixel;
for (i=0; i<NumCells; i++)
{
rd = (def_colrs[i].red - colr->red) / 256.0;
gd = (def_colrs[i].green - colr->green) / 256.0;
bd = (def_colrs[i].blue - colr->blue) / 256.0;
dist = (rd * rd * rd * rd) +
(gd * gd * gd * gd) +
(bd * bd * bd * bd);
if (dist < mindist)
{
mindist = dist;
cindx = def_colrs[i].pixel;
}
}
colr->pixel = cindx;
colr->red = def_colrs[cindx].red;
colr->green = def_colrs[cindx].green;
colr->blue = def_colrs[cindx].blue;
}
}
void
init_gfx(argc, argv)
int argc;
char *argv[];
{
int i;
XtToolkitInitialize ();
app = XtCreateApplicationContext ();
dsp = XtOpenDisplay (app, NULL, "wdb", "Wdb",
NULL, 0,
&argc, argv);
top = XtAppCreateShell("wdb", "Wdb",
applicationShellWidgetClass, dsp, NULL, 0);
vis = DefaultVisual(dsp, DefaultScreen(dsp));
NumCells = DisplayCells(dsp, DefaultScreen(dsp));
argcnt = 0;
XtSetArg(arg[argcnt], XtNtitle, "Micro WorldDataBase-II
Version 2.0"); argcnt++;
XtSetArg(arg[argcnt], XtNiconName, "wdb"); argcnt++;
XtSetValues(top, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNwidth, 640); argcnt++;
XtSetArg(arg[argcnt], XtNheight, 400); argcnt++;
XtSetArg(arg[argcnt], XtNbackground, DEF_BLACK); argcnt++;
view = XtCreateWidget("View", simpleWidgetClass, top,
arg, argcnt);
XtManageChild(view);
XtRealizeWidget(top);
XtAddEventHandler(view, ButtonPressMask, FALSE, ButtonProc, NULL);
Bwindow = XtWindow(view);
Cmap = DEF_CMAP;
for (i=0; i<8; i++)
{
char cname[5];
XColor tcolr;
sprintf(cname, "#%03x", CTable[i]);
XParseColor(dsp, Cmap, cname, &tcolr);
tcolr.flags = DoRed|DoGreen|DoBlue;
FindColor(&tcolr);
colr[i] = tcolr.pixel;
}
drawGC = XCreateGC(dsp, Bwindow, 0, NULL);
XSetForeground(dsp, drawGC, DEF_BLACK);
}
/************************** clean up **********************/
void
quit()
{
free((char *)p);
XFreeGC(dsp, drawGC);
exit(0);
}
void OpenContrWindow(infile)
char *infile;
{
argcnt = 0;
XtSetArg(arg[argcnt], XtNtitle, "Specs Control"); argcnt++;
XtSetArg(arg[argcnt], XtNiconName, "specs"); argcnt++;
control = XtCreatePopupShell("Control",
transientShellWidgetClass, top, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNwidth, 256); argcnt++;
XtSetArg(arg[argcnt], XtNheight, 159); argcnt++;
panel = XtCreateWidget( "Panel", formWidgetClass,
control, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNhorizDistance, 18); argcnt++;
XtSetArg(arg[argcnt], XtNvertDistance, 4); argcnt++;
XtSetArg(arg[argcnt], XtNwidth, 14); argcnt++;
XtSetArg(arg[argcnt], XtNheight, 100); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNorientation, XtorientVertical); argcnt++;
XtSetArg(arg[argcnt], XtNjumpProc, calllat); argcnt++;
lat_sc = XtCreateWidget( "Lat", scrollbarWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromHoriz, lat_sc); argcnt++;
XtSetArg(arg[argcnt], XtNvertDistance, 4); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, " 0'0"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainLeft); argcnt++;
lat_text = XtCreateWidget( "LatText", labelWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromHoriz, lat_text); argcnt++;
XtSetArg(arg[argcnt], XtNvertDistance, 4); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, "Latitude"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNborderWidth, 0); argcnt++;
lat_lab = XtCreateWidget( "LatLab", labelWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNhorizDistance, 60); argcnt++;
XtSetArg(arg[argcnt], XtNvertDistance, 43); argcnt++;
XtSetArg(arg[argcnt], XtNwidth, 180); argcnt++;
XtSetArg(arg[argcnt], XtNheight, 12); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNorientation, XtorientHorizontal); argcnt++;
XtSetArg(arg[argcnt], XtNjumpProc, calllon); argcnt++;
lon_sc = XtCreateWidget( "Lon", scrollbarWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromVert, lon_sc); argcnt++;
XtSetArg(arg[argcnt], XtNhorizDistance, 124); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, "Longitude"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNborderWidth, 0); argcnt++;
lon_lab = XtCreateWidget( "LonLab", labelWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromHoriz, lon_lab); argcnt++;
XtSetArg(arg[argcnt], XtNfromVert, lon_sc); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, " 0'0"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainTop); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainRight); argcnt++;
lon_text = XtCreateWidget( "LonText", labelWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromVert, lon_lab); argcnt++;
XtSetArg(arg[argcnt], XtNhorizDistance, 100); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, "Horiz Stretch:"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNborderWidth, 0); argcnt++;
strch_lab = XtCreateWidget( "StrchLab", labelWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromHoriz, strch_lab); argcnt++;
XtSetArg(arg[argcnt], XtNfromVert, lon_lab); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, " 1.20"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainRight); argcnt++;
strch_text = XtCreateWidget( "StrchText", labelWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromVert, strch_lab); argcnt++;
XtSetArg(arg[argcnt], XtNhorizDistance, 100); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, "Magnification:"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNborderWidth, 0); argcnt++;
mag_lab = XtCreateWidget( "MagLab", labelWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromHoriz, mag_lab); argcnt++;
XtSetArg(arg[argcnt], XtNfromVert, strch_lab); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, " 1.00"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainRight); argcnt++;
mag_text = XtCreateWidget( "magText", labelWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNhorizDistance, 19); argcnt++;
XtSetArg(arg[argcnt], XtNvertDistance, 127); argcnt++;
XtSetArg(arg[argcnt], XtNwidth, 220); argcnt++;
XtSetArg(arg[argcnt], XtNheight, 11); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainRight); argcnt++;
XtSetArg(arg[argcnt], XtNorientation, XtorientHorizontal); argcnt++;
XtSetArg(arg[argcnt], XtNjumpProc, callmag); argcnt++;
mag_sc = XtCreateWidget( "Mag", scrollbarWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromVert, mag_sc); argcnt++;
XtSetArg(arg[argcnt], XtNhorizDistance, 19); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, "Plot"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNcallback, callplot); argcnt++;
plot_btn = XtCreateWidget( "Plot", commandWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromVert, mag_sc); argcnt++;
XtSetArg(arg[argcnt], XtNfromHoriz, plot_btn); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, "Quit"); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNcallback, callquit); argcnt++;
quit_btn = XtCreateWidget( "Quit", commandWidgetClass,
panel, arg, argcnt);
argcnt = 0;
XtSetArg(arg[argcnt], XtNfromVert, mag_sc); argcnt++;
XtSetArg(arg[argcnt], XtNfromHoriz, quit_btn); argcnt++;
XtSetArg(arg[argcnt], XtNlabel, infile); argcnt++;
XtSetArg(arg[argcnt], XtNtop, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNbottom, XtChainBottom); argcnt++;
XtSetArg(arg[argcnt], XtNleft, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNright, XtChainLeft); argcnt++;
XtSetArg(arg[argcnt], XtNborderWidth, 0); argcnt++;
file_lab = XtCreateWidget( "FileLab", labelWidgetClass,
panel, arg, argcnt);
XtManageChild(lat_sc);
XtManageChild(lat_text);
XtManageChild(lat_lab);
XtManageChild(lon_sc);
XtManageChild(lon_text);
XtManageChild(lon_lab);
XtManageChild(mag_sc);
XtManageChild(mag_text);
XtManageChild(mag_lab);
XtManageChild(strch_text);
XtManageChild(strch_lab);
XtManageChild(plot_btn);
XtManageChild(quit_btn);
XtManageChild(file_lab);
XtManageChild(panel);
XtRealizeWidget(control);
XtMoveWidget(control, 10, 200);
XtPopup(control, XtGrabNone);
Lat = 0;
Lon = 0;
zoom = 1.0;
}
void
load(fn)
char *fn;
{
int Px, Py;
long x, y, LonPrv, LatPrv;
PNT *pp;
PNT *pend;
FILE *fp;
long z, xprv=0, yprv;
short is_out=0, was_out=0, n, ColorNum, newseg;
LonPrv = LatPrv = 0;
if ((fp = fopen(fn, "r")) != NULL)
{
while (n = (short) fread(p, PNTSiz, PCount, fp))
{
for (pp = p,pend = p+n; pp < pend; pp++)
{
/* do displacement */
x = pp->Lon*100 - Longitude;
y = pp->Lat*100 - Latitude;
/* wrap around for East-West */
if (x < -HSPAN)
x += WSPAN;
else if (x > HSPAN)
x -= WSPAN;
if (pp->Code > (int)5)
{
ColorNum = (pp->Code / 1000);
XSetForeground(dsp, drawGC, colr[ColorNum]);
newseg = 1;
}
/* ignore pts outside magnified area */
if((x < xmin || x > xmax || y < ymin || y > ymax))
{
is_out = 1;
if(was_out)
/* out to out */
{
LonPrv = x;
LatPrv = y;
goto go_on;
}
/* in to out */
Px = 320 + (LonPrv * X_Scale)/10000;
Py = 200 - (LatPrv * Y_Scale)/10000;
}
else
{
/* out to in */
is_out = 0;
if(was_out)
{
Px = 320 + (LonPrv * X_Scale)/10000;
Py = 200 - (LatPrv * Y_Scale)/10000;
}
/* in to in */
}
LonPrv = x;
LatPrv = y;
/* scale pts w/in area to interlace screen */
x = 320 + (x * X_Scale)/10000;
y = 200 - (y * Y_Scale)/10000;
/* ignore duplicates */
if (newseg == 0 && x == xprv && y == yprv)
continue;
/* if new segment, move to place */
if (newseg == 1 || ABS(z - pp->Lon) > 10800)
{
Px = x;
Py = y;
XDrawPoint(dsp, Bwindow, drawGC, Px,Py);
}
else
{
/* draw next point of seg */
XDrawLine(dsp, Bwindow, drawGC,
Px, Py, x, y);
Px = x;
Py = y;
}
xprv = x;
yprv = y;
z = pp->Lon;
go_on:
was_out = is_out;
newseg = 0;
}
}
fclose(fp);
}
}
void
PlotProc(w, client_data, call_data)
Widget w;
caddr_t client_data, call_data;
{
if(newCenter)
{
Lon = NewLon;
Lat = NewLat;
newCenter = 0;
}
SetSpecs(); /* redo parameters */
XClearArea(dsp, Bwindow, 0, 0, 0, 0, FALSE);
load(infile); /* redisplay map */
}
void
QuitProc(w, client_data, call_data)
Widget w;
caddr_t client_data, call_data;
{
quit();
}
void
LatProc(w, client_data, call_data)
Widget w;
XtPointer client_data, call_data;
{
float percent;
int newy;
char label[10];
percent = *((float *)call_data);
newy = (int)(10800.0 * percent);
newy = 10800 - newy;
newy = newy - 5400;;
MinToStr(label, newy);
argcnt = 0;
XtSetArg(arg[argcnt], XtNlabel, label); argcnt++;
XtSetValues(lat_text, arg, argcnt);
Lat = newy;
}
void
LonProc(w, client_data, call_data)
Widget w;
XtPointer client_data, call_data;
{
float percent;
int newx;
char label[10];
percent = *((float *)call_data);
newx = (int)(21600.0 * percent);
newx = newx - 10800;;
MinToStr(label, newx);
argcnt = 0;
XtSetArg(arg[argcnt], XtNlabel, label); argcnt++;
XtSetValues(lon_text, arg, argcnt);
Lon = newx;
}
void
MagProc(w, client_data, call_data)
Widget w;
XtPointer client_data, call_data;
{
float percent;
int newx;
double mag;
char label[10];
percent = *((float *)call_data);
newx = (int)(11900.0 * percent) + 100;
mag = newx / 100.0;
sprintf(label, "%5.2f", mag);
argcnt = 0;
XtSetArg(arg[argcnt], XtNlabel, label); argcnt++;
XtSetValues(mag_text, arg, argcnt);
if(deflt)
{
infile = PickFile(mag);
argcnt = 0;
XtSetArg(arg[argcnt], XtNlabel, infile); argcnt++;
XtSetValues(file_lab, arg, argcnt);
}
zoom = mag;
}
void
ButtonProc(w, data, event)
Widget w;
caddr_t data;
XEvent *event;
{
XButtonPressedEvent *BuEvent = (XButtonPressedEvent *)event;
float percent;
int newx, newy;
char label[10];
NewLon = Lon + ((BuEvent->x - 320.0) * 10800.0) /
(320.0 * zoom * stretch);
newx = NewLon + 10800;
percent = (float)newx / 21600.0;
XawScrollbarSetThumb(lon_sc, percent, -1.0);
MinToStr(label, NewLon);
argcnt = 0;
XtSetArg(arg[argcnt], XtNlabel, label); argcnt++;
XtSetValues(lon_text, arg, argcnt);
NewLat = Lat + ((200.0 - BuEvent->y) * 5400.0) /
(200.0 * zoom);
newy = NewLat + 5400;;
newy = 10800 - newy;
percent = (float)newy / 10800.0;
XawScrollbarSetThumb(lat_sc, percent, -1.0);
MinToStr(label, newy);
argcnt = 0;
XtSetArg(arg[argcnt], XtNlabel, label); argcnt++;
XtSetValues(lat_text, arg, argcnt);
newCenter = 1;
}
/***************************** main routine ********************************/
main(argc, argv)
int argc;
char *argv[];
{
unsigned short code;
if (argv[1][1] == '?')
{
fprintf(stderr, "Usage: WDB [data_file]\n");
exit(1);
}
if (argc == 2)
{
if (access(argv[1], R_OK) < 0)
{
fprintf(stderr, "Cannot find data file(%s)\n", argv[1]);
exit(1);
}
infile = argv[1];
deflt = 0;
}
else if ((infile = PickFile(1.0)) == NULL)
{
fprintf(stderr, "Cannot find data file\n");
exit(1);
}
if ((p = (PNT *)malloc(code = PCount*PNTSiz)) == NULL)
{
fprintf(stdout, "Insufficient memory for buffer\n");
exit(1);
}
init_gfx(argc, argv);
OpenContrWindow(infile);
XtAppMainLoop(app);
}
char *
PickFile(mag)
double mag;
{
static double maglvl[] = { 0.0, 36.0, 12.0, 6.0, 2.0 };
static char filename[12];
short level;
for(level = 1; level < 5; level++)
{
if (mag > maglvl[level])
break;
}
for( ; level < 6; level++)
{
sprintf(filename, "wdb.%d.all", level);
if (access(filename, R_OK) == 0)
{
return(filename);
}
}
return(NULL);
}
END------------------------------------------------------------------
--dean
deangran@cs.uoregon.edu