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From http://www.jwz.org/xscreensaver/xscreensaver-5.18.tar.gz
[xscreensaver]
/
hacks
/
glx
/
dangerball.c
diff --git
a/hacks/glx/dangerball.c
b/hacks/glx/dangerball.c
index 621e70cdca9929b92adae478c304a16edeb2a058..7b709092580fd76e24434a116e7c3e3c59700194 100644
(file)
--- a/
hacks/glx/dangerball.c
+++ b/
hacks/glx/dangerball.c
@@
-336,7
+336,10
@@
draw_ball (ModeInfo *mi)
(y - 0.5) * 8,
(z - 0.5) * 15);
(y - 0.5) * 8,
(z - 0.5) * 15);
+ /* Do it twice because we don't track the device's orientation. */
+ glRotatef( current_device_rotation(), 0, 0, 1);
gltrackball_rotate (bp->trackball);
gltrackball_rotate (bp->trackball);
+ glRotatef(-current_device_rotation(), 0, 0, 1);
get_rotation (bp->rot, &x, &y, &z, !bp->button_down_p);
glRotatef (x * 360, 1.0, 0.0, 0.0);
get_rotation (bp->rot, &x, &y, &z, !bp->button_down_p);
glRotatef (x * 360, 1.0, 0.0, 0.0);