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.\" ========================================================================
.\"
.IX Title "DIZZY 6"
.TH DIZZY 6 "2023-08-23" "perl v5.36.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
dizzy \- a graphics demo that makes you dizzy using rotating textures
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBdizzy\fR [\fB\-f\fR|\fB\-w\fR \fIwidth\fR \fB\-h\fR \fIheight\fR] [\fB\-t\fR \fIswitch_module\fR] [\fB\-T\fR \fIoptions\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBdizzy\fR is a graphics demo that rotates planes of patterns on a colored
background to make you dizzy. Textures can be cross-faded and there is a mode
that automatically changes textures, allowing Dizzy to be run as a screensaver.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-w\fR \fIwidth\fR" 4
.IX Item "-w width"
.PD 0
.IP "\fB\-\-width\fR \fIwidth\fR" 4
.IX Item "--width width"
.IP "\fB\-h\fR \fIheight\fR" 4
.IX Item "-h height"
.IP "\fB\-\-height\fR \fIheight\fR" 4
.IX Item "--height height"
.PD
Sets the window width and height.
.IP "\fB\-f\fR" 4
.IX Item "-f"
.PD 0
.IP "\fB\-\-fullscreen\fR" 4
.IX Item "--fullscreen"
.PD
Attempts to switch into a true fullscreen mode, if possible. The window size
parameters are ignored.
.IP "\fB\-a\fR" 4
.IX Item "-a"
.PD 0
.IP "\fB\-\-automode\fR \fItime\fR" 4
.IX Item "--automode time"
.PD
Automatically switches textures after a specified number of seconds has passed.
\&\fItime\fR can be fractional and the decimal separator is always the period.
.IP "\fB\-t\fR \fImodule\fR" 4
.IX Item "-t module"
.PD 0
.IP "\fB\-\-texswitcher\fR \fImodule\fR" 4
.IX Item "--texswitcher module"
.PD
Selects the texture switching module to use. Default is \fBSimple\fR.
.Sp
See below for available texture switchers and their descriptions.
.IP "\fB\-T\fR \fIoption\fR=\fIvalue\fR" 4
.IX Item "-T option=value"
.PD 0
.IP "\fB\-\-texswitcher\-options\fR \fIoption\fR=\fIvalue\fR" 4
.IX Item "--texswitcher-options option=value"
.PD
Passes an option \fIoption\fR with the value \fIvalue\fR to the selected texture
switcher. The available options depend on the texture switcher used.
.Sp
This option can be given multiple times to set multiple options.
.IP "\fB\-d\fR \fImodule\fR" 4
.IX Item "-d module"
.PD 0
.IP "\fB\-\-rotswitcher\fR \fImodule\fR" 4
.IX Item "--rotswitcher module"
.PD
Selects the rotator switching module to use. Default is \fBSimple\fR.
.Sp
See below for available texture switchers and their descriptions.
.IP "\fB\-D\fR \fIoption\fR=\fIvalue\fR" 4
.IX Item "-D option=value"
.PD 0
.IP "\fB\-\-rotswitcher\-options\fR \fIoption\fR=\fIvalue\fR" 4
.IX Item "--rotswitcher-options option=value"
.PD
Passes an option \fIoption\fR with the value \fIvalue\fR to the selected rotator
switcher. The available options depend on the rotator switcher used.
.Sp
This option can be given multiple times to set multiple options.
.IP "\fB\-r\fR \fIresolution\fR" 4
.IX Item "-r resolution"
.PD 0
.IP "\fB\-\-texture\-resolution\fR \fIresolution\fR" 4
.IX Item "--texture-resolution resolution"
.PD
Changes the texture resolution. \fIresolution\fR must be a power of two. The default
value is 256.
.IP "\fB\-R\fR \fIresolution\fR" 4
.IX Item "-R resolution"
.PD 0
.IP "\fB\-\-shader\-resolution\fR \fIresolution\fR" 4
.IX Item "--shader-resolution resolution"
.PD
Changes the resolution used when rendering using shaders. \fIresolution\fR must be
a power of two. The default is 1024.
.IP "\fB\-z\fR \fIzoom\fR" 4
.IX Item "-z zoom"
.PD 0
.IP "\fB\-\-zoom\fR \fIzoom\fR" 4
.IX Item "--zoom zoom"
.PD
Zooms the textures. The default value is 100.
.IP "\fB\-c\fR \fIpath\fR" 4
.IX Item "-c path"
.PD 0
.IP "\fB\-\-cache\-paths\fR \fIpath\fR" 4
.IX Item "--cache-paths path"
.PD
Use a different path for cached textures. This option can be specified multiple
times.
.IP "\fB\-C\fR" 4
.IX Item "-C"
.PD 0
.IP "\fB\-\-disable\-cache\fR" 4
.IX Item "--disable-cache"
.PD
Don't use any texture cache at all.
.IP "\fB\-\-debug\-show\-planes\fR" 4
.IX Item "--debug-show-planes"
Zooms out of the normal view so you can see how Dizzy creates the animation. A
white border will also be drawn around the area that would have been shown had
this option not been used.
.SH "TEXTURE SWITCHERS"
.IX Header "TEXTURE SWITCHERS"
.SS "Simple"
.IX Subsection "Simple"
A simple texture switcher. It just sets the new texture when it is told to do
so. It takes no options.
.SS "Blend"
.IX Subsection "Blend"
A texture switcher that crossfades between textures to generate a smooth
transition. It takes one option:
.IP "\fBduration\fR=\fIduration\fR" 4
.IX Item "duration=duration"
Sets the duration of a blend to \fIduration\fR seconds. The value can be fractional
(the decimal separator is always a period).  The default value is 2.
.Sp
Note that you have to add the time you specify here to the automode time, so if
you want the transition to take two seconds and every image to stay for five
seconds, you set the duration to 2 and automode to 7 (not 5).
.SH "ROTATOR SWITCHERS"
.IX Header "ROTATOR SWITCHERS"
.SS "Simple"
.IX Subsection "Simple"
A simple switcher that just activates the new rotator without any transition.
.SH "KEYBOARD COMMANDS"
.IX Header "KEYBOARD COMMANDS"
.IP "Cursor left" 4
.IX Item "Cursor left"
Select previous available texture.
.IP "Cursor right" 4
.IX Item "Cursor right"
Select next available texture.
.IP "Cursor down" 4
.IX Item "Cursor down"
Select previous available rotator function.
.IP "Cursor up" 4
.IX Item "Cursor up"
Select next available rotator function.
.IP "Escape" 4
.IX Item "Escape"
.PD 0
.IP "q" 4
.IX Item "q"
.PD
Exit Dizzy.