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/*
File : mainloop.c
Author : Lionel ULMER
Creation : 04/12/96
Virtual Reality ENGine
File containing the main loop handling events.
*/
#include <X11/Intrinsic.h>
#include "global.h"
#include "defaults.h"
#include "initui.h"
#include "initfuncs.h"
#include "supportfuncs.h"
#include "mainloop.h"
int iconified = 0;
void mainLoop()
{
int i, cfn = 0;
int event_cnt, event_redisp_delay = 0;
long secs[NBPICMEAN], usecs[NBPICMEAN];
double ftime, fps;
struct timeval tv;
XtInputMask im;
XEvent ev;
/* create time-outs */
XtAppAddTimeOut(appContext, NET_TIMEOUT, TimeOut, (XtPointer) NETTO);
/* init sockets observation */
id_fd = (XtInputId *) malloc(cnt_fd * sizeof(XtInputId));
for (i = 0; i < cnt_fd; i++) {
id_fd[i] = XtAppAddInput(appContext, tab_fd[i],
(XtPointer)XtInputReadMask, FDEvent, (XtPointer) NETFD);
}
/* Main loop */
while (1) {
if (iconified) {
XtAppPeekEvent(appContext, &ev);
trace(DBG_WIN, "Event");
}
evthandle = 1;
#ifdef OPTIM_LOOP
/* increment event_redisp_delay in interval [0..MIN_EVENT_REDISP-1] */
event_redisp_delay++;
event_redisp_delay %= MIN_EVENT_REDISP;
for (event_cnt = 0;
event_cnt < MAX_EVENT_CNT && (im = XtAppPending(appContext));
event_cnt++) {
#else
while ((im = XtAppPending(appContext))) {
#endif
XtAppProcessEvent(appContext, im); /* events to handle */
}
if (!iconified) {
gettimeofday(&tv, NULL);
#ifdef STAT_FRAMES
secs[cfn] = tv.tv_sec;
usecs[cfn] = tv.tv_usec;
ftime = (double) (secs[cfn] - secs[(cfn+1) % NBPICMEAN]) +
(usecs[cfn] - usecs[(cfn+1) % NBPICMEAN]) / 1000000.0;
fps = (double) NBPICMEAN / ftime;
cfn = (cfn+1) % NBPICMEAN;
/* trace(DBG_FORCE, "cfn=%d fps=%2.2f", cfn, fps); */
#endif
doWorldCalculation(tv.tv_sec, tv.tv_usec); /* compute the world */
#ifdef OPTIM_LOOP
/* S'il y a un vnement, on le traite et on ne fait pas le
* rendering, sauf si on doit le faire cause du dlai dj expir
* sans raffraichissement.
*/
if (event_redisp_delay && (im = XtAppPending(appContext))) {
XtAppProcessEvent(appContext, im);
continue;
}
#endif
Render(); /* compute the 3D */
GLwDrawingAreaSwapBuffers(threeDWidget);
XFlush(display);
/* we can do a new cycle */
event_redisp_delay = 0;
}
}
/* NOT_REACHED */
}
/* called when we iconify the window in order to suppress redraws */
void mapWin3D(Widget w, XEvent *ev, String *s, Cardinal *c)
{
trace(DBG_WIN, "Map: %s", *s);
if (*s[0] == 'm') {
iconified = 0; /* Widget displayed */
}
else {
iconified = 1; /* Widget iconified */
XtAppAddTimeOut(appContext, WMGT_TIMEOUT, TimeOut, (XtPointer) WMGTTO);
}
}
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