From http://www.jwz.org/xscreensaver/xscreensaver-5.35.tar.gz

[xscreensaver] / hacks / glx / dangerball.c

diff --git a/hacks/glx/dangerball.c b/hacks/glx/dangerball.c
index a44a55d703ac7beb86b58d589865fcd9abab198c..030546483f86e48c84f63dca26755225849732a0 100644 (file)
--- a/hacks/glx/dangerball.c
+++ b/hacks/glx/dangerball.c
@@ -13,6 +13,7 @@
                        "*count:        30          \n" \
                        "*showFPS:      False       \n" \
                        "*wireframe:    False       \n" \
+                       "*suppressRotationAnimation: True\n" \
 
 # define refresh_ball 0
 # define release_ball 0
@@ -101,6 +102,14 @@ reshape_ball (ModeInfo *mi, int width, int height)
              0.0, 0.0, 0.0,
              0.0, 1.0, 0.0);
 
+# ifdef HAVE_MOBILE    /* Keep it the same relative size when rotated. */
+  {
+    int o = (int) current_device_rotation();
+    if (o != 0 && o != 180 && o != -180)
+      glScalef (1/h, 1/h, 1/h);
+  }
+# endif
+
   glClear(GL_COLOR_BUFFER_BIT);
 }