*/
#ifdef STANDALONE
-# define PROGCLASS "Galaxy"
-# define HACK_INIT init_galaxy
-# define HACK_DRAW draw_galaxy
-# define galaxy_opts xlockmore_opts
-# define DEFAULTS "*delay: 100 \n" \
- "*count: -5 \n" \
- "*cycles: 250 \n" \
- "*size: -3 \n" \
- "*ncolors: 64 \n"
+# define DEFAULTS "*delay: 20000 \n" \
+ "*count: -5 \n" \
+ "*cycles: 250 \n" \
+ "*ncolors: 64 \n"
# define UNIFORM_COLORS
+# define reshape_galaxy 0
+# define galaxy_handle_event 0
# include "xlockmore.h" /* from the xscreensaver distribution */
#else /* !STANDALONE */
# include "xlock.h" /* from the xlockmore distribution */
static Bool tracks;
static Bool spin;
+static Bool dbufp;
#define DEF_TRACKS "True"
#define DEF_SPIN "True"
+#define DEF_DBUF "True"
static XrmOptionDescRec opts[] =
{
{"-tracks", ".galaxy.tracks", XrmoptionNoArg, "on"},
{"+tracks", ".galaxy.tracks", XrmoptionNoArg, "off"},
{"-spin", ".galaxy.spin", XrmoptionNoArg, "on"},
- {"+spin", ".galaxy.spin", XrmoptionNoArg, "off"}
+ {"+spin", ".galaxy.spin", XrmoptionNoArg, "off"},
+ {"-dbuf", ".galaxy.dbuf", XrmoptionNoArg, "on"},
+ {"+dbuf", ".galaxy.dbuf", XrmoptionNoArg, "off"},
};
static argtype vars[] =
{
{&tracks, "tracks", "Tracks", DEF_TRACKS, t_Bool},
- {&spin, "spin", "Spin", DEF_SPIN, t_Bool}
+ {&spin, "spin", "Spin", DEF_SPIN, t_Bool},
+ {&dbufp, "dbuf", "Dbuf", DEF_DBUF, t_Bool},
};
static OptionStruct desc[] =
{
{"-/+tracks", "turn on/off star tracks"},
- {"-/+spin", "do/don't spin viewpoint"}
+ {"-/+spin", "do/don't spin viewpoint"},
+ {"-/+dbuf", "turn on/off double buffering."},
};
-ModeSpecOpt galaxy_opts = { 4, opts, 2, vars, desc };
+ENTRYPOINT ModeSpecOpt galaxy_opts =
+{sizeof opts / sizeof opts[0], opts,
+ sizeof vars / sizeof vars[0], vars, desc};
#define FLOATRAND ((double) LRAND() / ((double) MAXRAND))
#define COLORBASE 16
- /* Colors for stars start here */
-#define COLORSTEP (NUMCOLORS/COLORBASE) /* NUMCOLORS / COLORBASE colors
-per galaxy */
+/* colors per galaxy */
+/* #define COLORSTEP (NUMCOLORS/COLORBASE) */
+# define COLORSTEP (MI_NCOLORS(mi)/COLORBASE)
typedef struct {
#endif /*0 */
}
-void
+ENTRYPOINT void
init_galaxy(ModeInfo * mi)
{
unistruct *gp;
}
gp = &universes[MI_SCREEN(mi)];
+# ifdef HAVE_COCOA /* Don't second-guess Quartz's double-buffering */
+ dbufp = False;
+# endif
+
gp->f_hititerations = MI_CYCLES(mi);
gp->scale = (double) (MI_WIN_WIDTH(mi) + MI_WIN_HEIGHT(mi)) / 8.0;
startover(mi);
}
-void
+ENTRYPOINT void
draw_galaxy(ModeInfo * mi)
{
- Display *display = MI_DISPLAY(mi);
- Window window = MI_WINDOW(mi);
- GC gc = MI_GC(mi);
- unistruct *gp = &universes[MI_SCREEN(mi)];
- double d, eps, cox, six, cor, sir; /* tmp */
- int i, j, k; /* more tmp */
- XPoint *dummy = NULL;
-
- if(spin){
- gp->rot_y += 0.01;
- gp->rot_x += 0.004;
- }
-
- cox = COSF(gp->rot_y);
- six = SINF(gp->rot_y);
- cor = COSF(gp->rot_x);
- sir = SINF(gp->rot_x);
-
- eps = 1/(EPSILON * sqrt_EPSILON * DELTAT * DELTAT * QCONS);
-
- for (i = 0; i < gp->ngalaxies; ++i) {
- Galaxy *gt = &gp->galaxies[i];
-
- for (j = 0; j < gp->galaxies[i].nstars; ++j) {
- Star *st = >->stars[j];
- XPoint *newp = >->newpoints[j];
- double v0 = st->vel[0];
- double v1 = st->vel[1];
- double v2 = st->vel[2];
-
- for (k = 0; k < gp->ngalaxies; ++k) {
- Galaxy *gtk = &gp->galaxies[k];
- double d0 = gtk->pos[0] - st->pos[0];
- double d1 = gtk->pos[1] - st->pos[1];
- double d2 = gtk->pos[2] - st->pos[2];
-
- d = d0 * d0 + d1 * d1 + d2 * d2;
- if (d > EPSILON)
- d = gt->mass / (d * sqrt(d)) * DELTAT * DELTAT * QCONS;
- else
- d = gt->mass * eps;
- v0 += d0 * d;
- v1 += d1 * d;
- v2 += d2 * d;
- }
-
- st->vel[0] = v0;
- st->vel[1] = v1;
- st->vel[2] = v2;
-
- st->pos[0] += v0;
- st->pos[1] += v1;
- st->pos[2] += v2;
-
- newp->x = (short) (((cox * st->pos[0]) - (six * st->pos[2])) *
-gp->scale) + gp->midx;
- newp->y = (short) (((cor * st->pos[1]) - (sir * ((six * st->pos[0]) +
-(cox * st->pos[2])))) * gp->scale) + gp->midy;
-
+ Display *display = MI_DISPLAY(mi);
+ Window window = MI_WINDOW(mi);
+ GC gc = MI_GC(mi);
+ unistruct *gp = &universes[MI_SCREEN(mi)];
+ double d, eps, cox, six, cor, sir; /* tmp */
+ int i, j, k; /* more tmp */
+ XPoint *dummy = NULL;
+
+ if (! dbufp)
+ XClearWindow(MI_DISPLAY(mi), MI_WINDOW(mi));
+
+ if(spin){
+ gp->rot_y += 0.01;
+ gp->rot_x += 0.004;
}
- for (k = i + 1; k < gp->ngalaxies; ++k) {
- Galaxy *gtk = &gp->galaxies[k];
- double d0 = gtk->pos[0] - gt->pos[0];
- double d1 = gtk->pos[1] - gt->pos[1];
- double d2 = gtk->pos[2] - gt->pos[2];
-
- d = d0 * d0 + d1 * d1 + d2 * d2;
- if (d > EPSILON)
- d = gt->mass * gt->mass / (d * sqrt(d)) * DELTAT * QCONS;
- else
- d = gt->mass * gt->mass / (EPSILON * sqrt_EPSILON) * DELTAT * QCONS;
-
- d0 *= d;
- d1 *= d;
- d2 *= d;
- gt->vel[0] += d0 / gt->mass;
- gt->vel[1] += d1 / gt->mass;
- gt->vel[2] += d2 / gt->mass;
- gtk->vel[0] -= d0 / gtk->mass;
- gtk->vel[1] -= d1 / gtk->mass;
- gtk->vel[2] -= d2 / gtk->mass;
+ cox = COSF(gp->rot_y);
+ six = SINF(gp->rot_y);
+ cor = COSF(gp->rot_x);
+ sir = SINF(gp->rot_x);
+
+ eps = 1/(EPSILON * sqrt_EPSILON * DELTAT * DELTAT * QCONS);
+
+ for (i = 0; i < gp->ngalaxies; ++i) {
+ Galaxy *gt = &gp->galaxies[i];
+
+ for (j = 0; j < gp->galaxies[i].nstars; ++j) {
+ Star *st = >->stars[j];
+ XPoint *newp = >->newpoints[j];
+ double v0 = st->vel[0];
+ double v1 = st->vel[1];
+ double v2 = st->vel[2];
+
+ for (k = 0; k < gp->ngalaxies; ++k) {
+ Galaxy *gtk = &gp->galaxies[k];
+ double d0 = gtk->pos[0] - st->pos[0];
+ double d1 = gtk->pos[1] - st->pos[1];
+ double d2 = gtk->pos[2] - st->pos[2];
+
+ d = d0 * d0 + d1 * d1 + d2 * d2;
+ if (d > EPSILON)
+ d = gt->mass / (d * sqrt(d)) * DELTAT * DELTAT * QCONS;
+ else
+ d = gt->mass * eps;
+ v0 += d0 * d;
+ v1 += d1 * d;
+ v2 += d2 * d;
+ }
+
+ st->vel[0] = v0;
+ st->vel[1] = v1;
+ st->vel[2] = v2;
+
+ st->pos[0] += v0;
+ st->pos[1] += v1;
+ st->pos[2] += v2;
+
+ newp->x = (short) (((cox * st->pos[0]) - (six * st->pos[2])) *
+ gp->scale) + gp->midx;
+ newp->y = (short) (((cor * st->pos[1]) - (sir * ((six * st->pos[0]) +
+ (cox * st->pos[2]))))
+ * gp->scale) + gp->midy;
+
+ }
+
+ for (k = i + 1; k < gp->ngalaxies; ++k) {
+ Galaxy *gtk = &gp->galaxies[k];
+ double d0 = gtk->pos[0] - gt->pos[0];
+ double d1 = gtk->pos[1] - gt->pos[1];
+ double d2 = gtk->pos[2] - gt->pos[2];
+
+ d = d0 * d0 + d1 * d1 + d2 * d2;
+ if (d > EPSILON)
+ d = gt->mass * gt->mass / (d * sqrt(d)) * DELTAT * QCONS;
+ else
+ d = gt->mass * gt->mass / (EPSILON * sqrt_EPSILON) * DELTAT * QCONS;
+
+ d0 *= d;
+ d1 *= d;
+ d2 *= d;
+ gt->vel[0] += d0 / gt->mass;
+ gt->vel[1] += d1 / gt->mass;
+ gt->vel[2] += d2 / gt->mass;
+ gtk->vel[0] -= d0 / gtk->mass;
+ gtk->vel[1] -= d1 / gtk->mass;
+ gtk->vel[2] -= d2 / gtk->mass;
+ }
+
+ gt->pos[0] += gt->vel[0] * DELTAT;
+ gt->pos[1] += gt->vel[1] * DELTAT;
+ gt->pos[2] += gt->vel[2] * DELTAT;
+
+ if (dbufp) {
+ XSetForeground(display, gc, MI_WIN_BLACK_PIXEL(mi));
+ XDrawPoints(display, window, gc, gt->oldpoints, gt->nstars,
+ CoordModeOrigin);
+ }
+ XSetForeground(display, gc, MI_PIXEL(mi, COLORSTEP * gt->galcol));
+ XDrawPoints(display, window, gc, gt->newpoints, gt->nstars,
+ CoordModeOrigin);
+
+ dummy = gt->oldpoints;
+ gt->oldpoints = gt->newpoints;
+ gt->newpoints = dummy;
}
- gt->pos[0] += gt->vel[0] * DELTAT;
- gt->pos[1] += gt->vel[1] * DELTAT;
- gt->pos[2] += gt->vel[2] * DELTAT;
-
- XSetForeground(display, gc, MI_WIN_BLACK_PIXEL(mi));
- XDrawPoints(display, window, gc, gt->oldpoints, gt->nstars,
-CoordModeOrigin);
- XSetForeground(display, gc, MI_PIXEL(mi, COLORSTEP * gt->galcol));
- XDrawPoints(display, window, gc, gt->newpoints, gt->nstars,
-CoordModeOrigin);
-
- dummy = gt->oldpoints;
- gt->oldpoints = gt->newpoints;
- gt->newpoints = dummy;
- }
-
- gp->step++;
- if (gp->step > gp->f_hititerations * 4)
- startover(mi);
+ gp->step++;
+ if (gp->step > gp->f_hititerations * 4)
+ startover(mi);
}
-void
+ENTRYPOINT void
release_galaxy(ModeInfo * mi)
{
if (universes != NULL) {
}
}
-void
+ENTRYPOINT void
refresh_galaxy(ModeInfo * mi)
{
/* Do nothing, it will refresh by itself */
}
+
+XSCREENSAVER_MODULE ("Galaxy", galaxy)
projects / xscreensaver / blobdiff