[\-24-cell]
[\-120-cell]
[\-600-cell]
-[\-mesh]
+[\-wireframe]
[\-surface]
[\-transparent]
[\-single-color]
The following three options are mutually exclusive. They determine
how the polytope is displayed.
.TP 8
-.B \-mesh
-Display the polytope as a wireframe mesh (default).
+.B \-wireframe
+Display the polytope as a wireframe mesh.
.TP 8
.B \-surface
Display the polytope as a solid object.
.TP 8
.B \-transparent
-Display the polytope as a transparent object.
+Display the polytope as a transparent object (default).
.PP
The following two options are mutually exclusive. They determine how
to color the polytope.
in degrees per frame. The speeds should be set to relatively small
values, e.g., less than 4 in magnitude.
.TP 8
-.B \-speed-xw \fIfloat\fP
+.B \-speed-wx \fIfloat\fP
Rotation speed around the wx plane (default: 1.1).
.TP 8
-.B \-speed-xy \fIfloat\fP
+.B \-speed-wy \fIfloat\fP
Rotation speed around the wy plane (default: 1.3).
.TP 8
.B \-speed-wz \fIfloat\fP
.TP 8
.B \-speed-yz \fIfloat\fP
Rotation speed around the yz plane (default: 2.1).
+.SH INTERACTION
+If you run this program in standalone mode you can rotate the polytope
+by dragging the mouse while pressing the left mouse button. This
+rotates the polytope in 3D, i.e., around the wx, wy, and wz planes.
+If you press the shift key while dragging the mouse with the left
+button pressed the polytope is rotated in 4D, i.e., around the xy, xz,
+and yz planes. To examine the polytope at your leisure, it is best to
+set all speeds to 0. Otherwise, the polytope will rotate while the
+left mouse button is not pressed.
+.B \-fps
+Display the current frame rate, CPU load, and polygon count.
.SH ENVIRONMENT
.PP
.TP 8
.BR X (1),
.BR xscreensaver (1)
.SH COPYRIGHT
-Copyright \(co 2003 by Carsten Steger. Permission to use, copy,
+Copyright \(co 2003-2005 by Carsten Steger. Permission to use, copy,
modify, distribute, and sell this software and its documentation for
any purpose is hereby granted without fee, provided that the above
copyright notice appear in all copies and that both that copyright
any purpose. It is provided "as is" without express or implied
warranty.
.SH AUTHOR
-Carsten Steger <carsten@mirsanmir.org>, 10-aug-2003.
+Carsten Steger <carsten@mirsanmir.org>, 28-sep-2005.