1 /* -*- Mode: C; tab-width: 4 -*-
2 Ported from xlockmore 4.03a12 to be a standalone program and thus usable
3 with xscreensaver by Jamie Zawinski <jwz@jwz.org> on 15-May-97.
5 Original copyright notice from xlock.c:
7 * Copyright (c) 1988-91 by Patrick J. Naughton.
9 * Permission to use, copy, modify, and distribute this software and its
10 * documentation for any purpose and without fee is hereby granted,
11 * provided that the above copyright notice appear in all copies and that
12 * both that copyright notice and this permission notice appear in
13 * supporting documentation.
15 * This file is provided AS IS with no warranties of any kind. The author
16 * shall have no liability with respect to the infringement of copyrights,
17 * trade secrets or any patents by this file or any part thereof. In no
18 * event will the author be liable for any lost revenue or profits or
19 * other special, indirect and consequential damages.
23 static const char sccsid[] = "@(#)bouboule.c 4.00 97/01/01 xlockmore";
27 * bouboule.c (bouboule mode for xlockmore)
29 * Sort of starfield for xlockmore. I found that making a starfield for
30 * a 3D engine and thought it could be a nice lock mode. For a real starfield,
31 * I only scale the sort of sphere you see to the whole sky and clip the stars
32 * to the camera screen.
34 * Code Copyright 1996 by Jeremie PETIT (jeremie_petit@geocities.com)
36 * Use: batchcount is the number of stars.
37 * cycles is the maximum size for a star
39 * 15-May-97: jwz@jwz.org: turned into a standalone program.
40 * 04-Sep-96: Added 3d support (Henrik Theiling, theiling@coli-uni-sb.de)
41 * 20-Feb-96: Added tests so that already malloced objects are not
42 * malloced twice, thanks to the report from <mccomb@interport.net>
43 * 01-Feb-96: Patched by Jouk Jansen <joukj@alpha.chem.uva.nl> for VMS
44 * Patched by <bagleyd@bigfoot.com> for TrueColor displays
45 * 30-Jan-96: Wrote all that I wanted to.
47 * DONE: Build up a XArc list and Draw everything once with XFillArcs
48 * That idea came from looking at swarm code.
49 * DONE: Add an old arcs list for erasing.
50 * DONE: Make center of starfield SinVariable.
51 * DONE: Add some random in the sinvary() function.
52 * DONE: check time for erasing the stars with the two methods and use the
53 * better one. Note that sometimes the time difference between
54 * beginning of erasing and its end is negative! I check this, and
55 * do not use this result when it occurs. If all values are negative,
56 * the erasing will continue being done in the currently tested mode.
57 * DONE: Allow stars size customization.
58 * DONE: Make sizey be no less than half sizex or no bigger than twice sizex.
60 * IDEA: A simple check can be performed to know which stars are "behind"
61 * and which are "in front". So is possible to very simply change
62 * the drawing mode for these two sorts of stars. BUT: this would lead
63 * to a rewrite of the XArc list code because drawing should be done
64 * in two steps: "behind" stars then "in front" stars. Also, what could
65 * be the difference between the rendering of these two types of stars?
66 * IDEA: Calculate the distance of each star to the "viewer" and render the
67 * star accordingly to this distance. Same remarks as for previous
68 * ideas can be pointed out. This would even lead to reget the old stars
69 * drawing code, that has been replaced by the XFillArcs. On another
70 * hand, this would allow particular stars (own color, shape...), as
71 * far as they would be individually drawn. One should be careful to
72 * draw them according to their distance, that is not drawing a far
73 * star after a close one.
77 # define DEFAULTS "*count: 100 \n" \
85 "*both3d: magenta \n" \
87 "*fpsSolid: true \n" \
88 "*ignoreRotation: True \n"
90 # define SMOOTH_COLORS
91 # define release_bouboule 0
92 # define bouboule_handle_event 0
93 # include "xlockmore.h" /* from the xscreensaver distribution */
94 #else /* !STANDALONE */
95 # include "xlock.h" /* from the xlockmore distribution */
96 # define ENTRYPOINT /**/
97 #endif /* !STANDALONE */
99 ENTRYPOINT ModeSpecOpt bouboule_opts = {
100 0, NULL, 0, NULL, NULL };
102 #define USEOLDXARCS 1 /* If 1, we use old xarcs list for erasing.
103 * else we just roughly erase the window.
104 * This mainly depends on the number of stars,
105 * because when they are many, it is faster to
106 * erase the whole window than to erase each star
109 #if HAVE_GETTIMEOFDAY
110 #define ADAPT_ERASE 1 /* If 1, then we try ADAPT_CHECKS black XFillArcs,
111 * and after, ADAPT_CHECKS XFillRectangle.
112 * We check which method seems better, knowing that
113 * XFillArcs is generally visually better. So we
114 * consider that XFillArcs is still better if its time
115 * is about XFillRectangle * ADAPT_ARC_PREFERED
116 * We need gettimeofday
117 * for this... Does it exist on other systems ? Do we
118 * have to use another function for others ?
119 * This value overrides USEOLDXARCS.
124 # include "../xvmsutils/unix_time.h"
126 # include <X11/unix_time.h>
130 #include <sys/time.h>
132 #define ADAPT_CHECKS 50
133 #define ADAPT_ARC_PREFERED 150 /* Maybe the value that is the most important
134 * for adapting to a system */
137 #define dtor(x) (((x) * M_PI) / 180.0) /* Degrees to radians */
141 /* jwz: I think slower color changes look better */
142 #define COLOR_CHANGES 50 /* How often we change colors (1 = always)
143 * This value should be tuned accordingly to
144 * the number of stars */
145 #define MAX_SIZEX_SIZEY 2. /* This controls whether the sphere can be very
146 * very large and have a small height (or the
147 * opposite) or no. */
149 #define THETACANRAND 80 /* percentage of changes for the speed of
150 * change of the 3 theta values */
151 #define SIZECANRAND 80 /* percentage of changes for the speed of
152 * change of the sizex and sizey values */
153 #define POSCANRAND 80 /* percentage of changes for the speed of
154 * change of the x and y values */
155 /* Note that these XXXCANRAND values can be 0, that is no rand acceleration *
158 #define VARRANDALPHA (NRAND((int) (M_PI * 1000.0))/1000.0)
159 #define VARRANDSTEP (M_PI/(NRAND(100)+100.0))
160 #define VARRANDMIN (-70.0)
161 #define VARRANDMAX 70.0
163 #define MINZVAL 100 /* stars can come this close */
164 #define SCREENZ 2000 /* this is where the screen is */
165 #define MAXZVAL 10000 /* stars can go this far away */
167 #define GETZDIFF(z) ((MI_DELTA3D(mi))*20.0*(1.0-(SCREENZ)/(z+1000)))
168 #define MAXDIFF MAX(-GETZDIFF(MINZVAL),GETZDIFF(MAXZVAL))
170 /* These values are the variation parameters of the acceleration variation *
171 of the SinVariables that are randomized. */
173 /******************************/
174 typedef struct SinVariableStruct
175 /******************************/
178 * Alpha is the current state of the sinvariable
179 * alpha should be initialized to a value between
183 * Speed of evolution of alpha. It should be a reasonable
184 * fraction of 2 * M_PI. This value directly influence
185 * the variable speed of variation.
187 double minimum; /* Minimum value for the variable */
188 double maximum; /* Maximum value for the variable */
189 double value; /* Current value */
190 int mayrand; /* Flag for knowing whether some randomization can be
191 * applied to the variable */
192 struct SinVariableStruct *varrand; /* Evolving Variable: the variation of
196 /***********************/
197 typedef struct StarStruct
198 /***********************/
200 double x, y, z; /* Position of the star */
201 short size; /* Try to guess */
204 /****************************/
205 typedef struct StarFieldStruct
206 /****************************/
208 short width, height; /* width and height of the starfield window */
209 short max_star_size; /* Maximum radius for stars. stars radius will
210 * vary from 1 to MAX_STAR_SIZE */
211 SinVariable x; /* Evolving variables: */
212 SinVariable y; /* Center of the field on the screen */
214 SinVariable sizex; /* Evolving variable: half width of the field */
215 SinVariable sizey; /* Evolving variable: half height of the field */
216 SinVariable thetax; /* Evolving Variables: */
217 SinVariable thetay; /* rotation angles of the starfield */
218 SinVariable thetaz; /* around x, y and z local axis */
219 Star *star; /* List of stars */
220 XArc *xarc; /* Current List of arcs */
221 XArc *xarcleft; /* additional list for the left arcs */
222 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
223 XArc *oldxarc; /* Old list of arcs */
226 unsigned long color; /* Current color of the starfield */
227 int colorp; /* Pointer to color of the starfield */
228 int NbStars; /* Number of stars */
229 short colorchange; /* Counter for the color change */
230 #if (ADAPT_ERASE == 1)
231 short hasbeenchecked;
237 static StarField *starfield = NULL;
241 sinvary(SinVariable * v)
245 v->value = v->minimum +
246 (v->maximum - v->minimum) * (sin(v->alpha) + 1.0) / 2.0;
251 int vaval = NRAND(100);
253 if (vaval <= v->mayrand)
255 v->alpha += (100.0 + (v->varrand->value)) * v->step / 100.0;
258 if (v->alpha > 2 * M_PI)
259 v->alpha -= 2 * M_PI;
262 /*************************************************/
264 sininit(SinVariable * v,
265 double alpha, double step, double minimum, double maximum,
270 v->minimum = minimum;
271 v->maximum = maximum;
272 v->mayrand = mayrand;
274 if (v->varrand == NULL)
275 v->varrand = (SinVariable *) calloc(1, sizeof (SinVariable));
284 /* We calculate the values at least once for initialization */
289 sinfree(SinVariable * point)
291 SinVariable *temp, *next;
293 next = point->varrand;
296 next = temp->varrand;
297 (void) free((void *) temp);
304 init_bouboule(ModeInfo * mi)
308 * The stars init part was first inspirated from the net3d game starfield
309 * code. But net3d starfield is not really 3d starfield, and I needed real 3d,
310 * so only remains the net3d starfield initialization main idea, that is
311 * the stars distribution on a sphere (theta and omega computing)
315 int size = MI_SIZE(mi);
319 MI_INIT (mi, starfield);
320 sp = &starfield[MI_SCREEN(mi)];
322 sp->width = MI_WIN_WIDTH(mi);
323 sp->height = MI_WIN_HEIGHT(mi);
325 /* use the right `black' pixel values: */
326 if (MI_WIN_IS_INSTALL(mi) && MI_WIN_IS_USE3D(mi)) {
327 XSetForeground(MI_DISPLAY(mi), MI_GC(mi), MI_NONE_COLOR(mi));
328 XFillRectangle(MI_DISPLAY(mi), MI_WINDOW(mi), MI_GC(mi),
329 0, 0, sp->width, sp->height);
331 XClearWindow(MI_DISPLAY(mi), MI_WINDOW(mi));
334 sp->max_star_size = NRAND(-size - MINSIZE + 1) + MINSIZE;
335 else if (size < MINSIZE)
336 sp->max_star_size = MINSIZE;
338 sp->max_star_size = size;
340 sp->NbStars = MI_BATCHCOUNT(mi);
341 if (sp->NbStars < -MINSTARS) {
343 (void) free((void *) sp->star);
347 (void) free((void *) sp->xarc);
351 (void) free((void *) sp->xarcleft);
354 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
356 (void) free((void *) sp->oldxarc);
359 if (sp->oldxarcleft) {
360 (void) free((void *) sp->oldxarcleft);
361 sp->oldxarcleft = NULL;
364 sp->NbStars = NRAND(-sp->NbStars - MINSTARS + 1) + MINSTARS;
365 } else if (sp->NbStars < MINSTARS)
366 sp->NbStars = MINSTARS;
368 /* We get memory for lists of objects */
369 if (sp->star == NULL)
370 sp->star = (Star *) malloc(sp->NbStars * sizeof (Star));
371 if (sp->xarc == NULL)
372 sp->xarc = (XArc *) malloc(sp->NbStars * sizeof (XArc));
373 if (MI_WIN_IS_USE3D(mi) && sp->xarcleft == NULL)
374 sp->xarcleft = (XArc *) malloc(sp->NbStars * sizeof (XArc));
375 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
376 if (sp->oldxarc == NULL)
377 sp->oldxarc = (XArc *) malloc(sp->NbStars * sizeof (XArc));
378 if (MI_WIN_IS_USE3D(mi) && sp->oldxarcleft == NULL)
379 sp->oldxarcleft = (XArc *) malloc(sp->NbStars * sizeof (XArc));
383 /* We initialize evolving variables */
385 NRAND(3142) / 1000.0, M_PI / (NRAND(100) + 100.0),
386 ((double) sp->width) / 4.0,
387 3.0 * ((double) sp->width) / 4.0,
390 NRAND(3142) / 1000.0, M_PI / (NRAND(100) + 100.0),
391 ((double) sp->height) / 4.0,
392 3.0 * ((double) sp->height) / 4.0,
395 /* for z, we have to ensure that the bouboule does not get behind */
396 /* the eyes of the viewer. His/Her eyes are at 0. Because the */
397 /* bouboule uses the x-radius for the z-radius, too, we have to */
398 /* use the x-values. */
400 NRAND(3142) / 1000.0, M_PI / (NRAND(100) + 100.0),
401 ((double) sp->width / 2.0 + MINZVAL),
402 ((double) sp->width / 2.0 + MAXZVAL),
407 NRAND(3142) / 1000.0, M_PI / (NRAND(100) + 100.0),
408 MIN(((double) sp->width) - sp->x.value,
410 MIN(((double) sp->width) - sp->x.value,
415 NRAND(3142) / 1000.0, M_PI / (NRAND(100) + 100.0),
416 MAX(sp->sizex.value / MAX_SIZEX_SIZEY,
417 sp->sizey.maximum / 5.0),
418 MIN(sp->sizex.value * MAX_SIZEX_SIZEY,
419 MIN(((double) sp->height) -
425 NRAND(3142) / 1000.0, M_PI / (NRAND(200) + 200.0),
429 NRAND(3142) / 1000.0, M_PI / (NRAND(200) + 200.0),
433 NRAND(3142) / 1000.0, M_PI / (NRAND(400) + 400.0),
437 for (i = 0; i < sp->NbStars; i++) {
439 XArc *arc = NULL, *arcleft = NULL;
440 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
441 XArc *oarc = NULL, *oarcleft = NULL;
444 star = &(sp->star[i]);
445 arc = &(sp->xarc[i]);
446 if (MI_WIN_IS_USE3D(mi))
447 arcleft = &(sp->xarcleft[i]);
448 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
449 oarc = &(sp->oldxarc[i]);
450 if (MI_WIN_IS_USE3D(mi))
451 oarcleft = &(sp->oldxarcleft[i]);
453 /* Elevation and bearing of the star */
454 theta = dtor((NRAND(1800)) / 10.0 - 90.0);
455 omega = dtor((NRAND(3600)) / 10.0 - 180.0);
457 /* Stars coordinates in a 3D space */
458 star->x = cos(theta) * sin(omega);
459 star->y = sin(omega) * sin(theta);
460 star->z = cos(omega);
462 /* We set the stars size */
463 star->size = NRAND(2 * sp->max_star_size);
464 if (star->size < sp->max_star_size)
467 star->size -= sp->max_star_size;
469 /* We set default values for the XArc lists elements */
471 if (MI_WIN_IS_USE3D(mi)) {
472 arcleft->x = arcleft->y = 0;
474 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
475 oarc->x = oarc->y = 0;
476 if (MI_WIN_IS_USE3D(mi)) {
477 oarcleft->x = oarcleft->y = 0;
480 arc->width = 2 + star->size;
481 arc->height = 2 + star->size;
482 if (MI_WIN_IS_USE3D(mi)) {
483 arcleft->width = 2 + star->size;
484 arcleft->height = 2 + star->size;
486 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
487 oarc->width = 2 + star->size;
488 oarc->height = 2 + star->size;
489 if (MI_WIN_IS_USE3D(mi)) {
490 oarcleft->width = 2 + star->size;
491 oarcleft->height = 2 + star->size;
496 arc->angle2 = 360 * 64;
497 if (MI_WIN_IS_USE3D(mi)) {
499 arcleft->angle2 = 360 * 64;
501 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
503 oarc->angle2 = 360 * 64; /* ie. we draw whole disks:
504 * from 0 to 360 degrees */
505 if (MI_WIN_IS_USE3D(mi)) {
506 oarcleft->angle1 = 0;
507 oarcleft->angle2 = 360 * 64;
512 if (MI_NPIXELS(mi) > 2)
513 sp->colorp = NRAND(MI_NPIXELS(mi));
514 /* We set up the starfield color */
515 if (!MI_WIN_IS_USE3D(mi) && MI_NPIXELS(mi) > 2)
516 sp->color = MI_PIXEL(mi, sp->colorp);
518 sp->color = MI_WIN_WHITE_PIXEL(mi);
520 #if (ADAPT_ERASE == 1)
521 /* We initialize the adaptation code for screen erasing */
522 sp->hasbeenchecked = ADAPT_CHECKS * 2;
530 draw_bouboule(ModeInfo * mi)
534 Display *display = MI_DISPLAY(mi);
535 Window window = MI_WINDOW(mi);
537 StarField *sp = &starfield[MI_SCREEN(mi)];
539 double CX, CY, CZ, SX, SY, SZ;
541 XArc *arc = NULL, *arcleft = NULL;
543 #ifdef HAVE_JWXYZ /* Don't second-guess Quartz's double-buffering */
544 XClearWindow(MI_DISPLAY(mi), MI_WINDOW(mi));
547 #if (ADAPT_ERASE == 1)
553 #if ((USEOLDXARCS == 0) || (ADAPT_ERASE == 1))
554 short x_1, y_1, x_2, y_2;
556 /* bounding rectangle around the old starfield,
557 * for erasing with the smallest rectangle
558 * instead of filling the whole screen */
559 int maxdiff = 0; /* maximal distance between left and right */
561 /* star in 3d mode, otherwise 0 */
564 #if ((USEOLDXARCS == 0) || (ADAPT_ERASE == 1))
565 if (MI_WIN_IS_USE3D(mi)) {
566 maxdiff = (int) MAXDIFF;
568 x_1 = (int) sp->x.value - (int) sp->sizex.value -
569 sp->max_star_size - maxdiff;
570 y_1 = (int) sp->y.value - (int) sp->sizey.value -
572 x_2 = 2 * ((int) sp->sizex.value + sp->max_star_size + maxdiff);
573 y_2 = 2 * ((int) sp->sizey.value + sp->max_star_size);
575 /* We make variables vary. */
576 sinvary(&sp->thetax);
577 sinvary(&sp->thetay);
578 sinvary(&sp->thetaz);
582 if (MI_WIN_IS_USE3D(mi))
585 /* A little trick to prevent the bouboule from being
586 * bigger than the screen */
588 MIN(((double) sp->width) - sp->x.value,
590 sp->sizex.minimum = sp->sizex.maximum / 3.0;
592 /* Another trick to make the ball not too flat */
594 MAX(sp->sizex.value / MAX_SIZEX_SIZEY,
595 sp->sizey.maximum / 3.0);
597 MIN(sp->sizex.value * MAX_SIZEX_SIZEY,
598 MIN(((double) sp->height) - sp->y.value,
605 * We calculate the rotation matrix values. We just make the
606 * rotation on the fly, without using a matrix.
607 * Star positions are recorded as unit vectors pointing in various
608 * directions. We just make them all rotate.
610 CX = cos(sp->thetax.value);
611 SX = sin(sp->thetax.value);
612 CY = cos(sp->thetay.value);
613 SY = sin(sp->thetay.value);
614 CZ = cos(sp->thetaz.value);
615 SZ = sin(sp->thetaz.value);
617 for (i = 0; i < sp->NbStars; i++) {
618 star = &(sp->star[i]);
619 arc = &(sp->xarc[i]);
620 if (MI_WIN_IS_USE3D(mi)) {
621 arcleft = &(sp->xarcleft[i]);
622 /* to help the eyes, the starfield is always as wide as */
623 /* deep, so .sizex.value can be used. */
624 diff = (int) GETZDIFF(sp->sizex.value *
625 ((SY * CX) * star->x + (SX) * star->y +
626 (CX * CY) * star->z) + sp->z.value);
628 arc->x = (short) ((sp->sizex.value *
629 ((CY * CZ - SX * SY * SZ) * star->x +
630 (-CX * SZ) * star->y +
631 (SY * CZ + SZ * SX * CY) * star->z) +
633 arc->y = (short) ((sp->sizey.value *
634 ((CY * SZ + SX * SY * CZ) * star->x +
635 (CX * CZ) * star->y +
636 (SY * SZ - SX * CY * CZ) * star->z) +
639 if (MI_WIN_IS_USE3D(mi)) {
640 arcleft->x = (short) ((sp->sizex.value *
641 ((CY * CZ - SX * SY * SZ) * star->x +
642 (-CX * SZ) * star->y +
643 (SY * CZ + SZ * SX * CY) * star->z) +
645 arcleft->y = (short) ((sp->sizey.value *
646 ((CY * SZ + SX * SY * CZ) * star->x +
647 (CX * CZ) * star->y +
648 (SY * SZ - SX * CY * CZ) * star->z) +
653 if (star->size != 0) {
654 arc->x -= star->size;
655 arc->y -= star->size;
656 if (MI_WIN_IS_USE3D(mi)) {
657 arcleft->x -= star->size;
658 arcleft->y -= star->size;
663 /* First, we erase the previous starfield */
664 if (MI_WIN_IS_INSTALL(mi) && MI_WIN_IS_USE3D(mi))
665 XSetForeground(display, gc, MI_NONE_COLOR(mi));
667 XSetForeground(display, gc, MI_WIN_BLACK_PIXEL(mi));
669 #if (ADAPT_ERASE == 1)
670 if (sp->hasbeenchecked == 0) {
671 /* We just calculate which method is the faster and eventually free
672 * the oldxarc list */
674 ADAPT_ARC_PREFERED * sp->rect_time) {
675 sp->hasbeenchecked = -2; /* XFillRectangle mode */
676 (void) free((void *) sp->oldxarc);
678 if (MI_WIN_IS_USE3D(mi)) {
679 (void) free((void *) sp->oldxarcleft);
680 sp->oldxarcleft = NULL;
683 sp->hasbeenchecked = -1; /* XFillArcs mode */
686 if (sp->hasbeenchecked == -2) {
687 /* Erasing is done with XFillRectangle */
688 XFillRectangle(display, window, gc,
690 } else if (sp->hasbeenchecked == -1) {
691 /* Erasing is done with XFillArcs */
692 XFillArcs(display, window, gc,
693 sp->oldxarc, sp->NbStars);
694 if (MI_WIN_IS_USE3D(mi))
695 XFillArcs(display, window, gc,
696 sp->oldxarcleft, sp->NbStars);
700 if (sp->hasbeenchecked > ADAPT_CHECKS) {
701 #ifdef GETTIMEOFDAY_TWO_ARGS
702 (void) gettimeofday(&tv1, NULL);
704 (void) gettimeofday(&tv1);
706 XFillRectangle(display, window, gc,
708 #ifdef GETTIMEOFDAY_TWO_ARGS
709 (void) gettimeofday(&tv2, NULL);
711 (void) gettimeofday(&tv2);
713 usec = (tv2.tv_sec - tv1.tv_sec) * 1000000;
714 if (usec + tv2.tv_usec - tv1.tv_usec > 0) {
715 sp->rect_time += usec + tv2.tv_usec - tv1.tv_usec;
716 sp->hasbeenchecked--;
719 #ifdef GETTIMEOFDAY_TWO_ARGS
720 (void) gettimeofday(&tv1, NULL);
722 (void) gettimeofday(&tv1);
724 XFillArcs(display, window, gc,
725 sp->oldxarc, sp->NbStars);
726 if (MI_WIN_IS_USE3D(mi))
727 XFillArcs(display, window, gc,
728 sp->oldxarcleft, sp->NbStars);
729 #ifdef GETTIMEOFDAY_TWO_ARGS
730 (void) gettimeofday(&tv2, NULL);
732 (void) gettimeofday(&tv2);
734 usec = (tv2.tv_sec - tv1.tv_sec) * 1000000;
735 if (usec + tv2.tv_usec - tv1.tv_usec > 0) {
736 sp->xarc_time += usec + tv2.tv_usec - tv1.tv_usec;
737 sp->hasbeenchecked--;
742 #if (USEOLDXARCS == 1)
743 XFillArcs(display, window, gc,
744 sp->oldxarc, sp->NbStars);
745 if (MI_WIN_IS_USE3D(mi))
746 XFillArcs(display, window, gc,
747 sp->oldxarcleft, sp->NbStars);
749 XFillRectangle(display, window, gc,
754 /* Then we draw the new one */
755 if (MI_WIN_IS_USE3D(mi)) {
756 if (MI_WIN_IS_INSTALL(mi))
757 XSetFunction(display, gc, GXor);
758 XSetForeground(display, gc, MI_RIGHT_COLOR(mi));
759 XFillArcs(display, window, gc, sp->xarc, sp->NbStars);
760 XSetForeground(display, gc, MI_LEFT_COLOR(mi));
761 XFillArcs(display, window, gc, sp->xarcleft, sp->NbStars);
762 if (MI_WIN_IS_INSTALL(mi))
763 XSetFunction(display, gc, GXcopy);
765 XSetForeground(display, gc, sp->color);
766 XFillArcs(display, window, gc, sp->xarc, sp->NbStars);
769 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
770 #if (ADAPT_ERASE == 1)
771 if (sp->hasbeenchecked >= -1) {
773 sp->xarc = sp->oldxarc;
775 if (MI_WIN_IS_USE3D(mi)) {
776 arcleft = sp->xarcleft;
777 sp->xarcleft = sp->oldxarcleft;
778 sp->oldxarcleft = arcleft;
783 sp->xarc = sp->oldxarc;
785 if (MI_WIN_IS_USE3D(mi)) {
786 arcleft = sp->xarcleft;
787 sp->xarcleft = sp->oldxarcleft;
788 sp->oldxarcleft = arcleft;
793 /* We set up the color for the next drawing */
794 if (!MI_WIN_IS_USE3D(mi) && MI_NPIXELS(mi) > 2 &&
795 (++sp->colorchange >= COLOR_CHANGES)) {
797 if (++sp->colorp >= MI_NPIXELS(mi))
799 sp->color = MI_PIXEL(mi, sp->colorp);
804 free_bouboule(ModeInfo * mi)
806 StarField *sp = &starfield[MI_SCREEN(mi)];
809 (void) free((void *) sp->star);
811 (void) free((void *) sp->xarc);
813 (void) free((void *) sp->xarcleft);
814 #if ((USEOLDXARCS == 1) || (ADAPT_ERASE == 1))
816 (void) free((void *) sp->oldxarc);
818 (void) free((void *) sp->oldxarcleft);
823 sinfree(&(sp->sizex));
824 sinfree(&(sp->sizey));
825 sinfree(&(sp->thetax));
826 sinfree(&(sp->thetay));
827 sinfree(&(sp->thetaz));
831 reshape_bouboule(ModeInfo * mi, int width, int height)
833 StarField *sp = &starfield[MI_SCREEN(mi)];
837 sp->x.alpha, sp->x.step,
838 ((double) sp->width) / 4.0,
839 3.0 * ((double) sp->width) / 4.0,
842 sp->y.alpha, sp->y.step,
843 ((double) sp->height) / 4.0,
844 3.0 * ((double) sp->height) / 4.0,
850 refresh_bouboule(ModeInfo * mi)
852 /* Do nothing, it will refresh by itself */
856 XSCREENSAVER_MODULE ("Bouboule", bouboule)