/* rotor --- a swirly rotor */
#if !defined( lint ) && !defined( SABER )
-static const char sccsid[] = "@(#)rotor.c 4.04 97/07/28 xlockmore";
+static const char sccsid[] = "@(#)rotor.c 5.00 2000/11/01 xlockmore";
#endif
* other special, indirect and consequential damages.
*
* Revision History:
- * 10-May-97: Compatible with xscreensaver
- * 08-Mar-95: CAT stuff for ## was tripping up some C compilers. Removed.
- * 01-Dec-93: added patch for AIXV3 from Tom McConnell
- * <tmcconne@sedona.intel.com>
- * 11-Nov-90: put into xlock by Steve Zellers <zellers@sun.com>
- * 16-Oct-90: Received from Tom Lawrence (tcl@cs.brown.edu: 'flight' simulator)
+ * 01-Nov-2000: Allocation checks
+ * 10-May-1997: Compatible with xscreensaver
+ * 08-Mar-1995: CAT stuff for ## was tripping up some C compilers. Removed.
+ * 01-Dec-1993: added patch for AIXV3 from Tom McConnell
+ * <tmcconne@sedona.intel.com>
+ * 11-Nov-1990: put into xlock by Steve Zellers <zellers@sun.com>
+ * 16-Oct-1990: Received from Tom Lawrence (tcl@cs.brown.edu: 'flight'
+ * simulator)
*/
#ifdef STANDALONE
-# define PROGCLASS "Rotor"
-# define HACK_INIT init_rotor
-# define HACK_DRAW draw_rotor
-# define rotor_opts xlockmore_opts
-# define DEFAULTS "*delay: 10000 \n" \
- "*count: 4 \n" \
- "*size: -6 \n" \
- "*cycles: 20 \n" \
- "*ncolors: 200 \n"
-# define SMOOTH_COLORS
-# include "xlockmore.h" /* in xscreensaver distribution */
+#define MODE_rotor
+#define PROGCLASS "Rotor"
+#define HACK_INIT init_rotor
+#define HACK_DRAW draw_rotor
+#define rotor_opts xlockmore_opts
+#define DEFAULTS "*delay: 10000 \n" \
+ "*count: 4 \n" \
+ "*cycles: 20 \n" \
+ "*size: -6 \n" \
+ "*ncolors: 200 \n"
+#define SMOOTH_COLORS
+#include "xlockmore.h" /* in xscreensaver distribution */
#else /* STANDALONE */
-# include "xlock.h" /* in xlockmore distribution */
+#include "xlock.h" /* in xlockmore distribution */
#endif /* STANDALONE */
+#ifdef MODE_rotor
+
ModeSpecOpt rotor_opts =
-{0, NULL, 0, NULL, NULL};
+{0, (XrmOptionDescRec *) NULL, 0, (argtype *) NULL, (OptionStruct *) NULL};
+
+#ifdef USE_MODULES
+ModStruct rotor_description =
+{"rotor", "init_rotor", "draw_rotor", "release_rotor",
+ "refresh_rotor", "init_rotor", (char *) NULL, &rotor_opts,
+ 100, 4, 100, -6, 64, 0.3, "",
+ "Shows Tom's Roto-Rooter", 0, NULL};
+
+#endif
/*-
* A 'batchcount' of 3 or 4 works best!
*/
-#define MAXANGLE 3000.0 /* irrectangular (jwz: was 10000.0) */
+#define MAXANGLE 3000.0 /* irrectangular (was 10000.0) */
/* How many segments to draw per cycle when redrawing */
#define REDRAWSTEP 3
elem *elements;
XPoint *save;
int redrawing, redrawpos;
+ int linewidth;
} rotorstruct;
-static rotorstruct *rotors = NULL;
+static rotorstruct *rotors = (rotorstruct *) NULL;
+
+static void
+free_rotor(rotorstruct *rp)
+{
+ if (rp->elements != NULL) {
+ (void) free((void *) rp->elements);
+ rp->elements = (elem *) NULL;
+ }
+ if (rp->save != NULL) {
+ (void) free((void *) rp->save);
+ rp->save = (XPoint *) NULL;
+ }
+}
void
init_rotor(ModeInfo * mi)
{
- rotorstruct *rp;
int x;
elem *pelem;
unsigned char wasiconified;
+ rotorstruct *rp;
if (rotors == NULL) {
if ((rotors = (rotorstruct *) calloc(MI_NUM_SCREENS(mi),
rp->prevcenterx = rp->centerx;
rp->prevcentery = rp->centery;
- rp->centerx = MI_WIN_WIDTH(mi) / 2;
- rp->centery = MI_WIN_HEIGHT(mi) / 2;
+ rp->centerx = MI_WIDTH(mi) / 2;
+ rp->centery = MI_HEIGHT(mi) / 2;
rp->redrawing = 0;
/*
*/
wasiconified = rp->iconifiedscreen;
- rp->iconifiedscreen = MI_WIN_IS_ICONIC(mi);
+ rp->iconifiedscreen = MI_IS_ICONIC(mi);
if (wasiconified && !rp->iconifiedscreen)
rp->firsttime = True;
if (!rp->prevcentery)
rp->prevcentery = rp->centery * 12;
- rp->num = MI_BATCHCOUNT(mi);
+ rp->num = MI_COUNT(mi);
if (rp->num < 0) {
rp->num = NRAND(-rp->num) + 1;
if (rp->elements != NULL) {
(void) free((void *) rp->elements);
- rp->elements = NULL;
+ rp->elements = (elem *) NULL;
}
}
if (rp->elements == NULL)
- rp->elements = (elem *) calloc(rp->num, sizeof (elem));
+ if ((rp->elements = (elem *) calloc(rp->num,
+ sizeof (elem))) == NULL) {
+ free_rotor(rp);
+ return;
+ }
rp->nsave = MI_CYCLES(mi);
if (rp->nsave <= 1)
rp->nsave = 2;
if (rp->save == NULL)
- rp->save = (XPoint *) calloc(rp->nsave, sizeof (XPoint));
+ if ((rp->save = (XPoint *) malloc(rp->nsave *
+ sizeof (XPoint))) == NULL) {
+ free_rotor(rp);
+ return;
+ }
+ for (x = 0; x < rp->nsave; x++) {
+ rp->save[x].x = rp->centerx;
+ rp->save[x].y = rp->centery;
+ }
pelem = rp->elements;
rp->angle = (float) NRAND((long) MAXANGLE) / 3.0;
rp->forward = rp->firsttime = True;
}
+ rp->linewidth = MI_SIZE(mi);
- {
- int line_width = MI_SIZE(mi);
- if (line_width == 0)
- line_width = -5;
- if (line_width < 0)
- line_width = NRAND(-line_width)+1;
- XSetLineAttributes(MI_DISPLAY(mi), MI_GC(mi), line_width,
- LineSolid, CapButt, JoinMiter);
- }
+ if (rp->linewidth == 0)
+ rp->linewidth = 1;
+ if (rp->linewidth < 0)
+ rp->linewidth = NRAND(-rp->linewidth) + 1;
- XClearWindow(MI_DISPLAY(mi), MI_WINDOW(mi));
+ MI_CLEARWINDOW(mi);
}
void
{
Display *display = MI_DISPLAY(mi);
GC gc = MI_GC(mi);
- register rotorstruct *rp = &rotors[MI_SCREEN(mi)];
register elem *pelem;
int thisx, thisy;
int i;
int x_1, y_1, x_2, y_2;
+ rotorstruct *rp;
+ if (rotors == NULL)
+ return;
+ rp = &rotors[MI_SCREEN(mi)];
+ if (rp->elements == NULL)
+ return;
+
+ MI_IS_DRAWN(mi) = True;
if (!rp->iconifiedscreen) {
thisx = rp->centerx;
thisy = rp->centery;
thisx = rp->prevcenterx;
thisy = rp->prevcentery;
}
+ XSetLineAttributes(MI_DISPLAY(mi), MI_GC(mi), rp->linewidth,
+ LineSolid, CapButt, JoinMiter);
for (i = rp->num, pelem = rp->elements; --i >= 0; pelem++) {
if (pelem->radius_drift_max <= pelem->radius_drift_now) {
pelem->start_radius = pelem->end_radius;
if (rp->firsttime)
rp->firsttime = False;
else {
- XSetForeground(display, gc, MI_WIN_BLACK_PIXEL(mi));
+ XSetForeground(display, gc, MI_BLACK_PIXEL(mi));
x_1 = (int) rp->save[rp->rotor].x;
y_1 = (int) rp->save[rp->rotor].y;
if (++rp->pix >= MI_NPIXELS(mi))
rp->pix = 0;
} else
- XSetForeground(display, gc, MI_WIN_WHITE_PIXEL(mi));
+ XSetForeground(display, gc, MI_WHITE_PIXEL(mi));
x_1 = rp->lastx;
y_1 = rp->lasty;
}
}
}
+ XSetLineAttributes(MI_DISPLAY(mi), MI_GC(mi), 1,
+ LineSolid, CapButt, JoinMiter);
}
void
if (rotors != NULL) {
int screen;
- for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
- rotorstruct *rp = &rotors[screen];
-
- if (rp->elements != NULL)
- (void) free((void *) rp->elements);
- if (rp->save != NULL)
- (void) free((void *) rp->save);
- }
+ for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++)
+ free_rotor(&rotors[screen]);
(void) free((void *) rotors);
- rotors = NULL;
+ rotors = (rotorstruct *) NULL;
}
}
void
refresh_rotor(ModeInfo * mi)
{
- rotorstruct *rp = &rotors[MI_SCREEN(mi)];
+ rotorstruct *rp;
+ if (rotors == NULL)
+ return;
+ rp = &rotors[MI_SCREEN(mi)];
+
+ MI_CLEARWINDOW(mi);
rp->redrawing = 1;
rp->redrawpos = 1;
}
+
+#endif /* MODE_rotor */
projects / xscreensaver / blobdiff