tachyon(1)

1TACHYON(1)                       User Commands                      TACHYON(1)
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NAME

6       Tachyon - parallel ray-tracer
7

DESCRIPTION

9       Tachyon  Parallel/Multiprocessor  Ray  Tracer    Version 0.98 Copyright
10       1994-2007,         John      E.       Stone       <johns@megapixel.com>
11       -----------------------------------------------------------    Unrecog‐
12       nized parameter/option flag: --help Usage:
13
14              tachyon/usr/bin/tachyon modelfile [options]
15
16   Model file formats supported:
17              filename.dat -- The model files originated  with  this  package.
18              filaname.ac  -- AC3D model files.  filename.nff -- The NFF scene
19              format used by Eric Haines' SPD.
20
21       Valid      options:       (**      denotes      default      behaviour)
22       ---------------------------------------------- Message Options:
23
24       +V verbose messages on
25
26       -V verbose messages off **
27
28   Speed Tuning Options:
29       -numthreads xxx
30              (** default is auto-determined)
31
32       -nobounding
33
34       -boundthresh xxx
35              (** default threshold is 16)
36
37   Shading Options:
38       -fullshade
39              best quality rendering (and slowest) **
40
41       -mediumshade
42              good quality rendering, but no shadows
43
44       -lowshade
45              low quality rendering, preview (and fast)
46
47       -lowestshade
48              worst quality rendering, preview (and fastest)
49
50   Lighting Options:
51       -rescale_lights xxx rescale light intensity values by
52              specified factor (performed before other lighting overrides take
53              effect)
54
55       -auto_skylight xxx
56              force use of ambient occlusion lighting,  auto-rescaling  direct
57              light  sources to compensate for ambient occlusion factor.  (use
58              value 0.7 as a good starting point)
59
60       -add_skylight xxx
61              force use  of  ambient  occlusion  lighting,  manually-rescaling
62              direct light sources to compensate for ambient occlusion factor.
63
64       -skylight_samples xxx number of sample rays to shoot.
65
66   Specular Highlight Shading Options:
67       -shade_phong
68              Phong specular highlights
69
70       -shade_blinn
71              Blinn's specular highlights**
72
73       -shade_blinn_fast
74              fast approximation to Blinn's highlights
75
76       -shade_nullphong
77              disable specular highlights
78
79   Transparency Shading Options:
80       -trans_orig
81              Original implementation**
82
83       -trans_vmd
84              Opacity post-multiply used by VMD
85
86   Surface Normal/Winding Order Fixup Mode:
87       -normalfixup [off | flip | guess]
88              (**off is default)
89
90   Antialiasing Options:
91       -aasamples xxx
92              (maximum  supersamples  taken  per  pixel)  (** default is 0, or
93              scene file determined)
94
95   Output Options:
96       -res Xres Yres
97              override scene-defined output image size
98
99       -o outfile.tga
100              set output file name
101
102       -clamp clamp pixel values to [0 to 1) (** default)
103
104       -normalize
105              normalize pixel values to [0 to 1)
106
107       -gamma val
108              normalize apply gamma correction
109
110       -format BMP
111              24-bit Windows BMP  (uncompressed)
112
113       -format JPEG
114              XXX Not compiled into this binary XXX
115
116       -format PNG
117              24-bit PNG          (compressed, lossless)
118
119       -format PPM
120              24-bit PPM          (uncompressed)
121
122       -format PPM48
123              48-bit PPM          (uncompressed)
124
125       -format PSD48
126              48-bit PSD          (uncompressed)
127
128       -format RGB
129              24-bit SGI RGB      (uncompressed)
130
131       -format TARGA
132              24-bit Targa        (uncompressed) **
133
134   Animation Related Options:
135       -camfile filename.cam
136              Animate using file of camera positions.
137
138       -nosave
139              Disable writing of output frames to disk (only  used  for  doing
140              real-time rendering)
141
142       Copyright    1994-2007,       John   E.   Stone   <johns@megapixel.com>
143       -----------------------------------------------------------    Unrecog‐
144       nized parameter/option flag: --version Usage:
145
146              tachyon/usr/bin/tachyon modelfile [options]
147
148   Model file formats supported:
149              filename.dat  --  The  model files originated with this package.
150              filaname.ac  -- AC3D model files.  filename.nff -- The NFF scene
151              format used by Eric Haines' SPD.
152
153       Valid      options:       (**      denotes      default      behaviour)
154       ---------------------------------------------- Message Options:
155
156       +V verbose messages on
157
158       -V verbose messages off **
159
160   Speed Tuning Options:
161       -numthreads xxx
162              (** default is auto-determined)
163
164       -nobounding
165
166       -boundthresh xxx
167              (** default threshold is 16)
168
169   Shading Options:
170       -fullshade
171              best quality rendering (and slowest) **
172
173       -mediumshade
174              good quality rendering, but no shadows
175
176       -lowshade
177              low quality rendering, preview (and fast)
178
179       -lowestshade
180              worst quality rendering, preview (and fastest)
181
182   Lighting Options:
183       -rescale_lights xxx rescale light intensity values by
184              specified factor (performed before other lighting overrides take
185              effect)
186
187       -auto_skylight xxx
188              force  use  of ambient occlusion lighting, auto-rescaling direct
189              light sources to compensate for ambient occlusion factor.   (use
190              value 0.7 as a good starting point)
191
192       -add_skylight xxx
193              force  use  of  ambient  occlusion  lighting, manually-rescaling
194              direct light sources to compensate for ambient occlusion factor.
195
196       -skylight_samples xxx number of sample rays to shoot.
197
198   Specular Highlight Shading Options:
199       -shade_phong
200              Phong specular highlights
201
202       -shade_blinn
203              Blinn's specular highlights**
204
205       -shade_blinn_fast
206              fast approximation to Blinn's highlights
207
208       -shade_nullphong
209              disable specular highlights
210
211   Transparency Shading Options:
212       -trans_orig
213              Original implementation**
214
215       -trans_vmd
216              Opacity post-multiply used by VMD
217
218   Surface Normal/Winding Order Fixup Mode:
219       -normalfixup [off | flip | guess]
220              (**off is default)
221
222   Antialiasing Options:
223       -aasamples xxx
224              (maximum supersamples taken per pixel)  (**  default  is  0,  or
225              scene file determined)
226
227   Output Options:
228       -res Xres Yres
229              override scene-defined output image size
230
231       -o outfile.tga
232              set output file name
233
234       -clamp clamp pixel values to [0 to 1) (** default)
235
236       -normalize
237              normalize pixel values to [0 to 1)
238
239       -gamma val
240              normalize apply gamma correction
241
242       -format BMP
243              24-bit Windows BMP  (uncompressed)
244
245       -format JPEG
246              XXX Not compiled into this binary XXX
247
248       -format PNG
249              24-bit PNG          (compressed, lossless)
250
251       -format PPM
252              24-bit PPM          (uncompressed)
253
254       -format PPM48
255              48-bit PPM          (uncompressed)
256
257       -format PSD48
258              48-bit PSD          (uncompressed)
259
260       -format RGB
261              24-bit SGI RGB      (uncompressed)
262
263       -format TARGA
264              24-bit Targa        (uncompressed) **
265
266   Animation Related Options:
267       -camfile filename.cam
268              Animate using file of camera positions.
269
270       -nosave
271              Disable  writing  of  output frames to disk (only used for doing
272              real-time rendering)
273

NAME

DESCRIPTION

SEE ALSO