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

[xscreensaver] / hacks / glx / dangerball.c

diff --git a/hacks/glx/dangerball.c b/hacks/glx/dangerball.c
index 030546483f86e48c84f63dca26755225849732a0..e40ccc531df8731aa37176564ffd9461880dff86 100644 (file)
--- a/hacks/glx/dangerball.c
+++ b/hacks/glx/dangerball.c
@@ -1,4 +1,4 @@
-/* dangerball, Copyright (c) 2001-2014 Jamie Zawinski <jwz@jwz.org>
+/* dangerball, Copyright (c) 2001-2017 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
@@ -15,7 +15,7 @@
                        "*wireframe:    False       \n" \
                        "*suppressRotationAnimation: True\n" \
 
-# define refresh_ball 0
+# define free_ball 0
 # define release_ball 0
 #undef countof
 #define countof(x) (sizeof((x))/sizeof((*x)))
@@ -89,8 +89,15 @@ ENTRYPOINT void
 reshape_ball (ModeInfo *mi, int width, int height)
 {
   GLfloat h = (GLfloat) height / (GLfloat) width;
+  int y = 0;
 
-  glViewport (0, 0, (GLint) width, (GLint) height);
+  if (width > height * 5) {   /* tiny window: show middle */
+    height = width * 9/16;
+    y = -height/2;
+    h = height / (GLfloat) width;
+  }
+
+  glViewport (0, y, (GLint) width, (GLint) height);
 
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
@@ -204,15 +211,7 @@ init_ball (ModeInfo *mi)
   ball_configuration *bp;
   int wire = MI_IS_WIREFRAME(mi);
 
-  if (!bps) {
-    bps = (ball_configuration *)
-      calloc (MI_NUM_SCREENS(mi), sizeof (ball_configuration));
-    if (!bps) {
-      fprintf(stderr, "%s: out of memory\n", progname);
-      exit(1);
-    }
-  }
-
+  MI_INIT (mi, bps);
   bp = &bps[MI_SCREEN(mi)];
 
   bp->glx_context = init_GL(mi);