.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.36.
.TH TACHYON "1" "May 2008" "Tachyon Parallel/Multiprocessor Ray Tracer   Version 0.98" "User Commands"
.SH NAME
Tachyon \- parallel ray-tracer
.SH DESCRIPTION
Tachyon Parallel/Multiprocessor Ray Tracer   Version 0.98
Copyright 1994\-2007,    John E. Stone <johns@megapixel.com>
\fB\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\fR
Unrecognized parameter/option flag: \fB\-\-help\fR
Usage:
.IP
tachyon/usr/bin/tachyon modelfile [options]
.SS "Model file formats supported:"
.IP
filename.dat \fB\-\-\fR The model files originated with this package.
filaname.ac  \fB\-\-\fR AC3D model files.
filename.nff \fB\-\-\fR The NFF scene format used by Eric Haines' SPD.
.PP
Valid options:  (** denotes default behaviour)
\fB\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\fR
Message Options:
.HP
+V verbose messages on
.HP
\fB\-V\fR verbose messages off **
.SS "Speed Tuning Options:"
.TP
\fB\-numthreads\fR xxx
(** default is auto\-determined)
.HP
\fB\-nobounding\fR
.TP
\fB\-boundthresh\fR xxx
(** default threshold is 16)
.SS "Shading Options:"
.TP
\fB\-fullshade\fR
best quality rendering (and slowest) **
.TP
\fB\-mediumshade\fR
good quality rendering, but no shadows
.TP
\fB\-lowshade\fR
low quality rendering, preview (and fast)
.TP
\fB\-lowestshade\fR
worst quality rendering, preview (and fastest)
.SS "Lighting Options:"
.TP
\fB\-rescale_lights\fR xxx rescale light intensity values by
specified factor (performed before other
lighting overrides take effect)
.TP
\fB\-auto_skylight\fR xxx
force use of ambient occlusion lighting,
auto\-rescaling direct light sources to
compensate for ambient occlusion factor.
(use value 0.7 as a good starting point)
.TP
\fB\-add_skylight\fR xxx
force use of ambient occlusion lighting,
manually\-rescaling direct light sources to
compensate for ambient occlusion factor.
.HP
\fB\-skylight_samples\fR xxx number of sample rays to shoot.
.SS "Specular Highlight Shading Options:"
.TP
\fB\-shade_phong\fR
Phong specular highlights
.TP
\fB\-shade_blinn\fR
Blinn's specular highlights**
.TP
\fB\-shade_blinn_fast\fR
fast approximation to Blinn's highlights
.TP
\fB\-shade_nullphong\fR
disable specular highlights
.SS "Transparency Shading Options:"
.TP
\fB\-trans_orig\fR
Original implementation**
.TP
\fB\-trans_vmd\fR
Opacity post\-multiply used by VMD
.SS "Surface Normal/Winding Order Fixup Mode:"
.TP
\fB\-normalfixup\fR [off | flip | guess]
(**off is default)
.SS "Antialiasing Options:"
.TP
\fB\-aasamples\fR xxx
(maximum supersamples taken per pixel)
(** default is 0, or scene file determined)
.SS "Output Options:"
.TP
\fB\-res\fR Xres Yres
override scene\-defined output image size
.TP
\fB\-o\fR outfile.tga
set output file name
.TP
\fB\-clamp\fR
clamp pixel values to [0 to 1) (** default)
.TP
\fB\-normalize\fR
normalize pixel values to [0 to 1)
.TP
\fB\-gamma\fR val
normalize apply gamma correction
.TP
\fB\-format\fR BMP
24\-bit Windows BMP  (uncompressed)
.TP
\fB\-format\fR JPEG
XXX Not compiled into this binary XXX
.TP
\fB\-format\fR PNG
24\-bit PNG          (compressed, lossless)
.TP
\fB\-format\fR PPM
24\-bit PPM          (uncompressed)
.TP
\fB\-format\fR PPM48
48\-bit PPM          (uncompressed)
.TP
\fB\-format\fR PSD48
48\-bit PSD          (uncompressed)
.TP
\fB\-format\fR RGB
24\-bit SGI RGB      (uncompressed)
.TP
\fB\-format\fR TARGA
24\-bit Targa        (uncompressed) **
.SS "Animation Related Options:"
.TP
\fB\-camfile\fR filename.cam
Animate using file of camera positions.
.TP
\fB\-nosave\fR
Disable writing of output frames to disk
(only used for doing real\-time rendering)
.PP
Copyright 1994\-2007,    John E. Stone <johns@megapixel.com>
\fB\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\fR
Unrecognized parameter/option flag: \fB\-\-version\fR
Usage:
.IP
tachyon/usr/bin/tachyon modelfile [options]
.SS "Model file formats supported:"
.IP
filename.dat \fB\-\-\fR The model files originated with this package.
filaname.ac  \fB\-\-\fR AC3D model files.
filename.nff \fB\-\-\fR The NFF scene format used by Eric Haines' SPD.
.PP
Valid options:  (** denotes default behaviour)
\fB\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\fR
Message Options:
.HP
+V verbose messages on
.HP
\fB\-V\fR verbose messages off **
.SS "Speed Tuning Options:"
.TP
\fB\-numthreads\fR xxx
(** default is auto\-determined)
.HP
\fB\-nobounding\fR
.TP
\fB\-boundthresh\fR xxx
(** default threshold is 16)
.SS "Shading Options:"
.TP
\fB\-fullshade\fR
best quality rendering (and slowest) **
.TP
\fB\-mediumshade\fR
good quality rendering, but no shadows
.TP
\fB\-lowshade\fR
low quality rendering, preview (and fast)
.TP
\fB\-lowestshade\fR
worst quality rendering, preview (and fastest)
.SS "Lighting Options:"
.TP
\fB\-rescale_lights\fR xxx rescale light intensity values by
specified factor (performed before other
lighting overrides take effect)
.TP
\fB\-auto_skylight\fR xxx
force use of ambient occlusion lighting,
auto\-rescaling direct light sources to
compensate for ambient occlusion factor.
(use value 0.7 as a good starting point)
.TP
\fB\-add_skylight\fR xxx
force use of ambient occlusion lighting,
manually\-rescaling direct light sources to
compensate for ambient occlusion factor.
.HP
\fB\-skylight_samples\fR xxx number of sample rays to shoot.
.SS "Specular Highlight Shading Options:"
.TP
\fB\-shade_phong\fR
Phong specular highlights
.TP
\fB\-shade_blinn\fR
Blinn's specular highlights**
.TP
\fB\-shade_blinn_fast\fR
fast approximation to Blinn's highlights
.TP
\fB\-shade_nullphong\fR
disable specular highlights
.SS "Transparency Shading Options:"
.TP
\fB\-trans_orig\fR
Original implementation**
.TP
\fB\-trans_vmd\fR
Opacity post\-multiply used by VMD
.SS "Surface Normal/Winding Order Fixup Mode:"
.TP
\fB\-normalfixup\fR [off | flip | guess]
(**off is default)
.SS "Antialiasing Options:"
.TP
\fB\-aasamples\fR xxx
(maximum supersamples taken per pixel)
(** default is 0, or scene file determined)
.SS "Output Options:"
.TP
\fB\-res\fR Xres Yres
override scene\-defined output image size
.TP
\fB\-o\fR outfile.tga
set output file name
.TP
\fB\-clamp\fR
clamp pixel values to [0 to 1) (** default)
.TP
\fB\-normalize\fR
normalize pixel values to [0 to 1)
.TP
\fB\-gamma\fR val
normalize apply gamma correction
.TP
\fB\-format\fR BMP
24\-bit Windows BMP  (uncompressed)
.TP
\fB\-format\fR JPEG
XXX Not compiled into this binary XXX
.TP
\fB\-format\fR PNG
24\-bit PNG          (compressed, lossless)
.TP
\fB\-format\fR PPM
24\-bit PPM          (uncompressed)
.TP
\fB\-format\fR PPM48
48\-bit PPM          (uncompressed)
.TP
\fB\-format\fR PSD48
48\-bit PSD          (uncompressed)
.TP
\fB\-format\fR RGB
24\-bit SGI RGB      (uncompressed)
.TP
\fB\-format\fR TARGA
24\-bit Targa        (uncompressed) **
.SS "Animation Related Options:"
.TP
\fB\-camfile\fR filename.cam
Animate using file of camera positions.
.TP
\fB\-nosave\fR
Disable writing of output frames to disk
(only used for doing real\-time rendering)
.SH "SEE ALSO"
The full documentation for
.B Tachyon
is maintained as a Texinfo manual.  If the
.B info
and
.B Tachyon
programs are properly installed at your site, the command
.IP
.B info Tachyon
.PP
should give you access to the complete manual.