Enlightenment CVS committal
Author : kwo
Project : e16
Module : e
Dir : e16/e/src
Modified Files:
misc.c
Log Message:
Try (again) to fix sliding effects.
===================================================================
RCS file: /cvsroot/enlightenment/e16/e/src/misc.c,v
retrieving revision 1.59
retrieving revision 1.60
diff -u -3 -r1.59 -r1.60
--- misc.c 11 Sep 2004 10:45:21 -0000 1.59
+++ misc.c 29 Sep 2004 19:42:05 -0000 1.60
@@ -184,53 +184,51 @@
/*
* Stuff to make loops for animated effects.
*/
-struct timeval etl_tv_last;
-static int etl_speed;
-static int etl_k1, etl_k2, etl_ki;
-static double etl_k;
+struct timeval etl_tv_start;
+static int etl_k1, etl_k2;
+static double etl_k, etl_fac;
+
+/*
+ * Return elapsed time in seconds since t0
+ */
+static double
+ETimeElapsed(struct timeval *t0)
+{
+ struct timeval tv;
+ int sec, usec;
+
+ gettimeofday(&tv, NULL);
+ sec = tv.tv_sec - t0->tv_sec;
+ usec = tv.tv_usec - t0->tv_usec;
+ return (double)sec + (((double)usec) / 1000000);
+}
void
ETimedLoopInit(int k1, int k2, int speed)
{
etl_k1 = k1;
etl_k2 = k2;
- etl_speed = speed;
+ if (speed < 500)
+ speed = 500;
+ /* When speed is 1000 the loop will take one sec. */
+ etl_fac = (k2 - k1) * speed / 1000.;
- etl_k = 1.0 * etl_k1;
- gettimeofday(&etl_tv_last, NULL);
+ gettimeofday(&etl_tv_start, NULL);
}
int
ETimedLoopNext(void)
{
- struct timeval tv;
- int dsec, dusec;
- double spd, tm;
-
- etl_ki++; /* Increment iteration count */
+ double tm;
/* Find elapsed time since loop start */
- gettimeofday(&tv, NULL);
- dsec = tv.tv_sec - etl_tv_last.tv_sec;
- dusec = tv.tv_usec - etl_tv_last.tv_usec;
- etl_tv_last.tv_sec = tv.tv_sec;
- etl_tv_last.tv_usec = tv.tv_usec;
- if (dusec < 0)
- {
- dsec--;
- dusec += 1000000;
- }
- tm = (double)dsec + (((double)dusec) / 1000000);
-
- spd = ((double)etl_speed * tm);
- if (spd < 0.001) /* More or less arbitrary limit */
- spd = 0.001;
+ tm = ETimeElapsed(&etl_tv_start);
#if 0
- Eprintf("SlideEwinTo k=%4f tm=%.3f spd=%f\n", etl_k, 1e3 * tm, spd);
+ Eprintf("ETimedLoopNext k=%4f tm=%.3f\n", etl_k, tm);
#endif
- etl_k += spd;
+ etl_k = etl_k1 + tm * etl_fac;
- return (int)etl_k;
+ return etl_k;
}
/*
-------------------------------------------------------
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