From http://www.jwz.org/xscreensaver/xscreensaver-5.22.tar.gz

[xscreensaver] / hacks / deluxe.c

diff --git a/hacks/deluxe.c b/hacks/deluxe.c
index 7b0ac3b4f6ec427786df17f5a0cc670cf672d50a..06cfe1b9dc7373b3c4d1b15e4331930f8f6fcc04 100644 (file)
--- a/hacks/deluxe.c
+++ b/hacks/deluxe.c
@@ -1,4 +1,4 @@
-/* xscreensaver, Copyright (c) 1999-2006 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1999-2013 Jamie Zawinski <jwz@jwz.org>
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -62,7 +62,14 @@ draw_star (struct state *st, Drawable w, struct throbber *t)
   XPoint points[11];
   int x = t->x;
   int y = t->y;
-  int s = t->size / 0.383;  /* trial and error, I forget how to derive this */
+
+  /*
+    The following constant is really:
+      sqrt(5 - sqrt(5)) / sqrt(25 - 11 * sqrt(5))
+
+    Reference: http://mathworld.wolfram.com/Pentagram.html
+  */
+  int s = t->size * 2.6180339887498985;
   int s2 = t->size;
   double c = M_PI * 2;
   double o = -M_PI / 2;
@@ -120,25 +127,31 @@ draw_corners (struct state *st, Drawable w, struct throbber *t)
   int s = (t->size + t->thickness) / 2;
   XPoint points[3];
 
-  points[0].x = 0;        points[0].y = t->y - s;
-  points[1].x = t->x - s; points[1].y = t->y - s;
-  points[2].x = t->x - s; points[2].y = 0;
-  XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
-
-  points[0].x = 0;        points[0].y = t->y + s;
-  points[1].x = t->x - s; points[1].y = t->y + s;
-  points[2].x = t->x - s; points[2].y = t->max_size;
-  XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
-
-  points[0].x = t->x + s;    points[0].y = 0;
-  points[1].x = t->x + s;    points[1].y = t->y - s;
-  points[2].x = t->max_size; points[2].y = t->y - s;
-  XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+  if (t->y > s)
+    {
+      points[0].x = 0;        points[0].y = t->y - s;
+      points[1].x = t->x - s; points[1].y = t->y - s;
+      points[2].x = t->x - s; points[2].y = 0;
+      XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+
+      points[0].x = t->x + s;    points[0].y = 0;
+      points[1].x = t->x + s;    points[1].y = t->y - s;
+      points[2].x = t->max_size; points[2].y = t->y - s;
+      XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+    }
 
-  points[0].x = t->x + s;    points[0].y = t->max_size;
-  points[1].x = t->x + s;    points[1].y = t->y + s;
-  points[2].x = t->max_size; points[2].y = t->y + s;
-  XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+  if (t->x > s)
+    {
+      points[0].x = 0;        points[0].y = t->y + s;
+      points[1].x = t->x - s; points[1].y = t->y + s;
+      points[2].x = t->x - s; points[2].y = t->max_size;
+      XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+
+      points[0].x = t->x + s;    points[0].y = t->max_size;
+      points[1].x = t->x + s;    points[1].y = t->y + s;
+      points[2].x = t->max_size; points[2].y = t->y + s;
+      XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+    }
 }
 
 
@@ -150,7 +163,7 @@ make_throbber (struct state *st, Drawable d, int w, int h, unsigned long pixel)
   struct throbber *t = (struct throbber *) malloc (sizeof (*t));
   t->x = w / 2;
   t->y = h / 2;
-  t->max_size = w;
+  t->max_size = (w > h ? w : h);
   t->speed = get_integer_resource (st->dpy, "speed", "Speed");
   t->fuse = 1 + (random() % 4);
   t->thickness = get_integer_resource (st->dpy, "thickness", "Thickness");
@@ -159,11 +172,6 @@ make_throbber (struct state *st, Drawable d, int w, int h, unsigned long pixel)
   t->speed += (((random() % t->speed) / 2) - (t->speed / 2));
   if (t->speed > 0) t->speed = -t->speed;
 
-  if (random() % 4)
-    t->size = t->max_size;
-  else
-    t->size = t->thickness, t->speed = -t->speed;
-
   flags = GCForeground;
 # ifndef HAVE_COCOA
   if (st->transparent_p)
@@ -208,6 +216,14 @@ make_throbber (struct state *st, Drawable d, int w, int h, unsigned long pixel)
   default: abort(); break;
   }
 
+  if (t->draw == draw_circle) 
+    t->max_size *= 1.5;
+
+  if (random() % 4)
+    t->size = t->max_size;
+  else
+    t->size = t->thickness, t->speed = -t->speed;
+
   return t;
 }
 
@@ -303,7 +319,7 @@ deluxe_init (Display *dpy, Window window)
 #ifndef HAVE_COCOA
     COLOR:
 #endif
-      make_random_colormap (st->dpy, st->xgwa.visual, st->xgwa.colormap,
+      make_random_colormap (st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
                             st->colors, &st->ncolors, True, True, 0, True);
       if (st->ncolors < 2)
         goto MONO;
@@ -411,7 +427,7 @@ deluxe_free (Display *dpy, Window window, void *closure)
 static const char *deluxe_defaults [] = {
   ".background:                black",
   ".foreground:                white",
-  "*delay:             5000",
+  "*delay:             10000",
   "*count:             5",
   "*thickness:         50",
   "*speed:             15",
@@ -422,6 +438,9 @@ static const char *deluxe_defaults [] = {
   "*useDBE:            True",
   "*useDBEClear:       True",
 #endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
+#ifdef USE_IPHONE
+  "*ignoreRotation:     True",
+#endif
   0
 };