From http://www.jwz.org/xscreensaver/xscreensaver-5.38.tar.gz

[xscreensaver] / hacks / apollonian.c

diff --git a/hacks/apollonian.c b/hacks/apollonian.c
index 39a905afbfc4703cd5555c54543ae816f912b7db..4b28ac3fdcdb2651ed38c9a0328b1f552ef2b820 100644 (file)
--- a/hacks/apollonian.c
+++ b/hacks/apollonian.c
@@ -70,14 +70,15 @@ static const char sccsid[] = "@(#)apollonian.c      5.02 2001/07/01 xlockmore";
                                        "*count:   64      \n" \
                                        "*cycles:  20      \n" \
                                        "*ncolors: 64      \n" \
+                                       "*font:    fixed" "\n" \
                                        "*fpsTop: true     \n" \
                                        "*fpsSolid: true   \n" \
+                                       "*ignoreRotation: True" \
 
-# define refresh_apollonian 0
+# define release_apollonian 0
 # define reshape_apollonian 0
 # define apollonian_handle_event 0
 # include "xlockmore.h"                /* in xscreensaver distribution */
-# include "erase.h"
 #else /* STANDALONE */
 # include "xlock.h"            /* in xlockmore distribution */
 #endif /* STANDALONE */
@@ -117,8 +118,8 @@ extern XFontStruct *getFont(Display * display);
 
 #ifdef USE_MODULES
 ModStruct   apollonian_description =
-{"apollonian", "init_apollonian", "draw_apollonian", "release_apollonian",
- "init_apollonian", "init_apollonian", (char *) NULL, &apollonian_opts,
+{"apollonian", "init_apollonian", "draw_apollonian", (char *) NULL,
+ "init_apollonian", "init_apollonian", "free_apollonian", &apollonian_opts,
  1000000, 64, 20, 1, 64, 1.0, "",
  "Shows Apollonian Circles", 0, NULL};
 
@@ -298,9 +299,6 @@ typedef struct {
 #endif
        int         time;
        int         game;
-#ifdef STANDALONE
-  eraser_state *eraser;
-#endif
 } apollonianstruct;
 
 static apollonianstruct *apollonians = (apollonianstruct *) NULL;
@@ -506,7 +504,7 @@ static void
 p(ModeInfo *mi, circle c)
 {
        apollonianstruct *cp = &apollonians[MI_SCREEN(mi)];
-       char string[10];
+       char string[15];
        double g, e;
        int g_width;
 
@@ -613,12 +611,14 @@ p(ModeInfo *mi, circle c)
 
 #define BIG 7
 static void
-f(ModeInfo *mi, circle c1, circle c2, circle c3, circle c4)
+f(ModeInfo *mi, circle c1, circle c2, circle c3, circle c4, int depth)
 {
        apollonianstruct *cp = &apollonians[MI_SCREEN(mi)];
        int e = (int) ((cp->c1.e >= 0.0) ? 1.0 : -cp->c1.e);
         circle c;
 
+       if (depth > mi->recursion_depth) mi->recursion_depth = depth;
+
         c.e = 2*(c1.e+c2.e+c3.e) - c4.e;
         c.s = 2*(c1.s+c2.s+c3.s) - c4.s;
         c.h = 2*(c1.h+c2.h+c3.h) - c4.h;
@@ -629,14 +629,16 @@ f(ModeInfo *mi, circle c1, circle c2, circle c3, circle c4)
             c.x / c.e < -BIG || c.y / c.e < -BIG)
                 return;
         p(mi, c);
-        f(mi, c2, c3, c, c1);
-        f(mi, c1, c3, c, c2);
-        f(mi, c1, c2, c, c3);
+        f(mi, c2, c3, c, c1, depth+1);
+        f(mi, c1, c3, c, c2, depth+1);
+        f(mi, c1, c2, c, c3, depth+1);
 }
 
 ENTRYPOINT void
-free_apollonian (Display *display, apollonianstruct *cp)
+free_apollonian (ModeInfo * mi)
 {
+       apollonianstruct *cp = &apollonians[MI_SCREEN(mi)];
+
        if (cp->quad != NULL) {
                (void) free((void *) cp->quad);
                cp->quad = (apollonian_quadruple *) NULL;
@@ -677,11 +679,7 @@ init_apollonian (ModeInfo * mi)
        apollonianstruct *cp;
        int i;
 
-       if (apollonians == NULL) {
-               if ((apollonians = (apollonianstruct *) calloc(MI_NUM_SCREENS(mi),
-                                            sizeof (apollonianstruct))) == NULL)
-                       return;
-       }
+       MI_INIT (mi, apollonians);
        cp = &apollonians[MI_SCREEN(mi)];
 
        cp->size = MAX(MIN(MI_WIDTH(mi), MI_HEIGHT(mi)) - 1, 1);
@@ -726,9 +724,7 @@ init_apollonian (ModeInfo * mi)
                        cquad(&(cp->c1), &(cp->c2), &(cp->c3), &(cp->c4));
        }
        cp->time = 0;
-#ifndef STANDALONE
        MI_CLEARWINDOW(mi);
-#endif
        if (cp->game != 0) {
                double q123;
 
@@ -768,6 +764,8 @@ init_apollonian (ModeInfo * mi)
        randomize_c(i, &(cp->c3));
        randomize_c(i, &(cp->c4));
 #endif 
+
+    mi->recursion_depth = -1;
 }
 
 ENTRYPOINT void
@@ -779,12 +777,6 @@ draw_apollonian (ModeInfo * mi)
                return;
        cp = &apollonians[MI_SCREEN(mi)];
 
-#ifdef STANDALONE
-    if (cp->eraser) {
-      cp->eraser = erase_window (MI_DISPLAY(mi), MI_WINDOW(mi), cp->eraser);
-      return;
-    }
-#endif
 
        MI_IS_DRAWN(mi) = True;
 
@@ -797,38 +789,20 @@ draw_apollonian (ModeInfo * mi)
                        p(mi, cp->c4);
                        break;
                case 1:
-                       f(mi, cp->c1, cp->c2, cp->c3, cp->c4);
+                       f(mi, cp->c1, cp->c2, cp->c3, cp->c4, 0);
                        break;
                case 2:
-                       f(mi, cp->c1, cp->c2, cp->c4, cp->c3);
+                       f(mi, cp->c1, cp->c2, cp->c4, cp->c3, 0);
                        break;
                case 3:
-                       f(mi, cp->c1, cp->c3, cp->c4, cp->c2);
+                       f(mi, cp->c1, cp->c3, cp->c4, cp->c2, 0);
                        break;
                case 4:
-                       f(mi, cp->c2, cp->c3, cp->c4, cp->c1);
+                       f(mi, cp->c2, cp->c3, cp->c4, cp->c1, 0);
                }
        }
        if (++cp->time > MI_CYCLES(mi))
-      {
-#ifdef STANDALONE
-        cp->eraser = erase_window (MI_DISPLAY(mi), MI_WINDOW(mi), cp->eraser);
-#endif /* STANDALONE */
                init_apollonian(mi);
-      }
-}
-
-ENTRYPOINT void
-release_apollonian (ModeInfo * mi)
-{
-       if (apollonians != NULL) {
-               int         screen;
-
-               for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++)
-                       free_apollonian(MI_DISPLAY(mi), &apollonians[screen]);
-               (void) free((void *) apollonians);
-               apollonians = (apollonianstruct *) NULL;
-       }
 }
 
 XSCREENSAVER_MODULE ("Apollonian", apollonian)