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

[xscreensaver] / hacks / fiberlamp.c

diff --git a/hacks/fiberlamp.c b/hacks/fiberlamp.c
index 062f62ffd3e65f83b304ef88d986d19aca272302..580851acba808f6b108fa108d8e5a7d811f74321 100644 (file)
--- a/hacks/fiberlamp.c
+++ b/hacks/fiberlamp.c
@@ -1,7 +1,7 @@
 /* -*- Mode: C; tab-width: 4 -*- */
 /* fiberlamp --- A Fiber Optic Lamp */
 
-#if !defined( lint ) && !defined( SABER )
+#if 0
 static const char sccsid[] = "@(#)fiberlamp.c  5.00 2000/11/01 xlockmore";
 
 #endif
@@ -38,6 +38,8 @@ static const char sccsid[] = "@(#)fiberlamp.c 5.00 2000/11/01 xlockmore";
                                        "*fpsTop: true  \n" \
 
 # define UNIFORM_COLORS
+# define release_fiberlamp 0
+# define reshape_fiberlamp 0
 # define fiberlamp_handle_event 0
 # include "xlockmore.h"                /* in xscreensaver distribution */
 #else /* STANDALONE */
@@ -51,15 +53,15 @@ ENTRYPOINT ModeSpecOpt fiberlamp_opts =
 
 #ifdef USE_MODULES
 ModStruct   fiberlamp_description =
-{"fiberlamp", "init_fiberlamp", "draw_fiberlamp", "release_fiberlamp",
- "draw_fiberlamp", "change_fiberlamp", (char *) NULL, &fiberlamp_opts,
+{"fiberlamp", "init_fiberlamp", "draw_fiberlamp", (char *) NULL,
+ "draw_fiberlamp", "change_fiberlamp", "free_fiberlamp", &fiberlamp_opts,
  1000, 500, 10000, 0, 64, 1.0, "", "Shows a Fiber Optic Lamp", 0, NULL};
 
 #endif
 
 #define SPREAD (30.0) /* Angular spread at the base */
 #define SCALE (MI_WIDTH(mi)/2) /* Screen size */
-#define NODES (20) /* Number of nodes in a fiber.  Variable with range
+#define NODES (20L) /* Number of nodes in a fiber.  Variable with range
                                          10 .. 30, if desired.  High values have
                                          stability problems unless you use small DT */
 
@@ -95,7 +97,7 @@ typedef struct {
   int     init;
   double  psi;
   double  dpsi;
-  int     count, nfibers;
+  long    count, nfibers;
   double  cx;
   double  rx, ry; /* Coordinates relative to root */
   fiberstruct *fiber;
@@ -141,9 +143,10 @@ free_fiber(fiberlampstruct *fl)
        }
 }
 
-static void
-free_fiberlamp(ModeInfo *mi, fiberlampstruct *fl)
+ENTRYPOINT void
+free_fiberlamp(ModeInfo *mi)
 {
+    fiberlampstruct *fl = &fiberlamps[MI_SCREEN(mi)];
        if (fl->buffer != None && fl->dbufp) {
                 XFreePixmap(MI_DISPLAY(mi), fl->buffer);
                 fl->buffer = None;
@@ -156,16 +159,11 @@ init_fiberlamp(ModeInfo * mi)
 {
   fiberlampstruct *fl;
 
-  if (fiberlamps == NULL) {
-       if ((fiberlamps =
-                (fiberlampstruct *) calloc(MI_NUM_SCREENS(mi),
-                       sizeof (fiberlampstruct))) == NULL)
-         return;
-  }
+  MI_INIT (mi, fiberlamps);
   fl = &fiberlamps[MI_SCREEN(mi)];
 
   /* Create or Resize double buffer */
-#ifdef HAVE_COCOA      /* Don't second-guess Quartz's double-buffering */
+#ifdef HAVE_JWXYZ      /* Don't second-guess Quartz's double-buffering */
   fl->dbufp = False;
 #else
   fl->dbufp = True;
@@ -178,7 +176,7 @@ init_fiberlamp(ModeInfo * mi)
     fl->buffer = XCreatePixmap(MI_DISPLAY(mi), MI_WINDOW(mi),
                                MI_WIDTH(mi), MI_HEIGHT(mi), MI_DEPTH(mi));
     if (fl->buffer == None) {
-      free_fiberlamp(mi, fl);
+      free_fiberlamp(mi);
       return;
     }
   } else {
@@ -197,7 +195,7 @@ init_fiberlamp(ModeInfo * mi)
   /* Allocate fibers */
   if((fl->fiber =
          (fiberstruct*) calloc(fl->nfibers, sizeof (fiberstruct))) == NULL) {
-       free_fiberlamp(mi, fl);
+       free_fiberlamp(mi);
        return;
   } else {
        int f;
@@ -207,7 +205,7 @@ init_fiberlamp(ModeInfo * mi)
                  (nodestruct*) calloc(NODES, sizeof (nodestruct))) == NULL
                 ||(fs->draw =
                        (XPoint*) calloc(NODES, sizeof (XPoint))) == NULL) {
-               free_fiberlamp(mi, fl);
+               free_fiberlamp(mi);
                return;
          }
        }
@@ -276,13 +274,6 @@ init_fiberlamp(ModeInfo * mi)
   change_fiberlamp(mi);
 }
 
-/* Used by xscreensaver.  xlock just uses init_fiberlamp */
-ENTRYPOINT void
-reshape_fiberlamp(ModeInfo * mi, int width, int height)
-{
-  init_fiberlamp(mi);
-}
-
 /* sort fibers so they get drawn back-to-front, one bubble pass is
    enough as the order only changes slowly */
 static void
@@ -305,15 +296,36 @@ draw_fiberlamp (ModeInfo * mi)
   fiberlampstruct *fl;
   int f, i;
   int x, y;
+  int ww, hh;
   Window unused;
+  short cx, cy;
+
+  ww = MI_WIDTH(mi);
+  hh = MI_HEIGHT(mi);
 
-  short cx = MI_WIDTH(mi)/2;
+  cx = MI_WIDTH(mi)/2;
 #if defined PLAN || defined CHECKCOLORWHEEL
-  short cy = MI_HEIGHT(mi)/2;
+  cy = MI_HEIGHT(mi)/2;
 #else
-  short cy = MI_HEIGHT(mi);
+  cy = MI_HEIGHT(mi);
 #endif
 
+  if (ww > hh * 5 ||  /* window has weird aspect */
+      hh > ww * 5)
+    {
+      if (ww > hh)
+        {
+          hh = ww;
+          cy = hh / 4;
+        }
+      else
+        {
+          ww = hh;
+          cx = 0;
+          cy = hh*3/4;
+        }
+    }
+
   if (fiberlamps == NULL)
        return;
   fl = &fiberlamps[MI_SCREEN(mi)];
@@ -383,11 +395,11 @@ draw_fiberlamp (ModeInfo * mi)
                n->z = p->z + LEN(i-1) * se * sp;
          }
 
-         fs->draw[i-1].x = cx + MI_WIDTH(mi)/2*n->x;
+         fs->draw[i-1].x = cx + ww/2*n->x;
 #if defined PLAN || defined CHECKCOLORWHEEL /* Plan */
-         fs->draw[i-1].y = cy + MI_WIDTH(mi)/2*n->z;
+         fs->draw[i-1].y = cy + ww/2*n->z;
 #else /* Elevation */
-         fs->draw[i-1].y = cy + MI_WIDTH(mi)/2*n->y;
+         fs->draw[i-1].y = cy + ww/2*n->y;
 #endif
        }
        MI_IS_DRAWN(mi) = True;
@@ -408,9 +420,9 @@ draw_fiberlamp (ModeInfo * mi)
          double x = fs->node[1].x - fl->cx + 0.025;
          double y = fs->node[1].z + 0.02;
          double angle = atan2(y, x) + fl->psi;
-         int tipcolor = (int)(MI_NPIXELS(mi)*angle/(2*M_PI)) % MI_NPIXELS(mi);
-         int fibercolor;
-         int tiplen;
+         long tipcolor = (int)(MI_NPIXELS(mi)*angle/(2*M_PI)) % MI_NPIXELS(mi);
+         long fibercolor;
+         long tiplen;
 
       if (tipcolor < 0) tipcolor += MI_NPIXELS(mi);
       tipcolor = MI_PIXEL(mi, tipcolor);
@@ -449,24 +461,13 @@ draw_fiberlamp (ModeInfo * mi)
   }
 }
 
-ENTRYPOINT void
-release_fiberlamp(ModeInfo * mi)
-{
-       if (fiberlamps != NULL) {
-               int         screen;
-
-               for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++)
-                       free_fiberlamp(mi, &fiberlamps[screen]);
-               free(fiberlamps);
-               fiberlamps = (fiberlampstruct *) NULL;
-       }
-}
-
+#ifndef STANDALONE
 ENTRYPOINT void
 refresh_fiberlamp(ModeInfo * mi)
 {
        MI_CLEARWINDOW(mi);
 }
+#endif
 
 XSCREENSAVER_MODULE ("Fiberlamp", fiberlamp)