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

[xscreensaver] / hacks / glx / moebiusgears.c

diff --git a/hacks/glx/moebiusgears.c b/hacks/glx/moebiusgears.c
index 0716cdcb858dc566de96560b5272a19636adf6d0..0f058b81e603f43c037c5cbce772302855250762 100644 (file)
--- a/hacks/glx/moebiusgears.c
+++ b/hacks/glx/moebiusgears.c
@@ -15,7 +15,7 @@
                        "*wireframe:    False       \n" \
                        "*suppressRotationAnimation: True\n" \
 
-# define refresh_mgears 0
+# define free_mgears 0
 # define release_mgears 0
 #undef countof
 #define countof(x) (sizeof((x))/sizeof((*x)))
@@ -92,8 +92,15 @@ ENTRYPOINT void
 reshape_mgears (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();
@@ -236,7 +243,7 @@ init_mgears (ModeInfo *mi)
   mgears_configuration *bp;
   int wire = MI_IS_WIREFRAME(mi);
 
-  MI_INIT (mi, bps, NULL);
+  MI_INIT (mi, bps);
 
   bp = &bps[MI_SCREEN(mi)];