--- name: "tachyon" section: "1" platform: "linux" package: "tachyon" version: "0.99~b2+dfsg-0.4" release: "Debian 8 (Jessie)" platforms: ["linux"] url: "https://new.carta.tech/tachyon" --- # tachyon(1) parallel ray-tracer ## NAME Tachyon - parallel ray-tracer ## DESCRIPTION Tachyon Parallel/Multiprocessor Ray Tracer Version 0.98 Copyright 1994-2007, John E. Stone \ **-----------------------------------------------------------** Unrecognized parameter/option flag: **--help** Usage: - tachyon/usr/bin/tachyon modelfile \[options\] ### Model file formats supported: - filename.dat **--** The model files originated with this package. filaname.ac **--** AC3D model files. filename.nff **--** The NFF scene format used by Eric Haines' SPD. Valid options: (\*\* denotes default behaviour) **----------------------------------------------** Message Options: \+V verbose messages on **-V** verbose messages off \*\* ### Speed Tuning Options: - **-numthreads** xxx (\*\* default is auto-determined) **-nobounding** - **-boundthresh** xxx (\*\* default threshold is 16) ### Shading Options: - **-fullshade** best quality rendering (and slowest) \*\* - **-mediumshade** good quality rendering, but no shadows - **-lowshade** low quality rendering, preview (and fast) - **-lowestshade** worst quality rendering, preview (and fastest) ### Lighting Options: - **-rescale\_lights** xxx rescale light intensity values by specified factor (performed before other lighting overrides take effect) - **-auto\_skylight** 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) - **-add\_skylight** xxx force use of ambient occlusion lighting, manually-rescaling direct light sources to compensate for ambient occlusion factor. **-skylight\_samples** xxx number of sample rays to shoot. ### Specular Highlight Shading Options: - **-shade\_phong** Phong specular highlights - **-shade\_blinn** Blinn's specular highlights\*\* - **-shade\_blinn\_fast** fast approximation to Blinn's highlights - **-shade\_nullphong** disable specular highlights ### Transparency Shading Options: - **-trans\_orig** Original implementation\*\* - **-trans\_vmd** Opacity post-multiply used by VMD ### Surface Normal/Winding Order Fixup Mode: - **-normalfixup** \[off \| flip \| guess\] (\*\*off is default) ### Antialiasing Options: - **-aasamples** xxx (maximum supersamples taken per pixel) (\*\* default is 0, or scene file determined) ### Output Options: - **-res** Xres Yres override scene-defined output image size - **-o** outfile.tga set output file name - **-clamp** clamp pixel values to \[0 to 1) (\*\* default) - **-normalize** normalize pixel values to \[0 to 1) - **-gamma** val normalize apply gamma correction - **-format** BMP 24-bit Windows BMP (uncompressed) - **-format** JPEG XXX Not compiled into this binary XXX - **-format** PNG 24-bit PNG (compressed, lossless) - **-format** PPM 24-bit PPM (uncompressed) - **-format** PPM48 48-bit PPM (uncompressed) - **-format** PSD48 48-bit PSD (uncompressed) - **-format** RGB 24-bit SGI RGB (uncompressed) - **-format** TARGA 24-bit Targa (uncompressed) \*\* ### Animation Related Options: - **-camfile** filename.cam Animate using file of camera positions. - **-nosave** Disable writing of output frames to disk (only used for doing real-time rendering) Copyright 1994-2007, John E. Stone \ **-----------------------------------------------------------** Unrecognized parameter/option flag: **--version** Usage: - tachyon/usr/bin/tachyon modelfile \[options\] ### Model file formats supported: - filename.dat **--** The model files originated with this package. filaname.ac **--** AC3D model files. filename.nff **--** The NFF scene format used by Eric Haines' SPD. Valid options: (\*\* denotes default behaviour) **----------------------------------------------** Message Options: \+V verbose messages on **-V** verbose messages off \*\* ### Speed Tuning Options: - **-numthreads** xxx (\*\* default is auto-determined) **-nobounding** - **-boundthresh** xxx (\*\* default threshold is 16) ### Shading Options: - **-fullshade** best quality rendering (and slowest) \*\* - **-mediumshade** good quality rendering, but no shadows - **-lowshade** low quality rendering, preview (and fast) - **-lowestshade** worst quality rendering, preview (and fastest) ### Lighting Options: - **-rescale\_lights** xxx rescale light intensity values by specified factor (performed before other lighting overrides take effect) - **-auto\_skylight** 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) - **-add\_skylight** xxx force use of ambient occlusion lighting, manually-rescaling direct light sources to compensate for ambient occlusion factor. **-skylight\_samples** xxx number of sample rays to shoot. ### Specular Highlight Shading Options: - **-shade\_phong** Phong specular highlights - **-shade\_blinn** Blinn's specular highlights\*\* - **-shade\_blinn\_fast** fast approximation to Blinn's highlights - **-shade\_nullphong** disable specular highlights ### Transparency Shading Options: - **-trans\_orig** Original implementation\*\* - **-trans\_vmd** Opacity post-multiply used by VMD ### Surface Normal/Winding Order Fixup Mode: - **-normalfixup** \[off \| flip \| guess\] (\*\*off is default) ### Antialiasing Options: - **-aasamples** xxx (maximum supersamples taken per pixel) (\*\* default is 0, or scene file determined) ### Output Options: - **-res** Xres Yres override scene-defined output image size - **-o** outfile.tga set output file name - **-clamp** clamp pixel values to \[0 to 1) (\*\* default) - **-normalize** normalize pixel values to \[0 to 1) - **-gamma** val normalize apply gamma correction - **-format** BMP 24-bit Windows BMP (uncompressed) - **-format** JPEG XXX Not compiled into this binary XXX - **-format** PNG 24-bit PNG (compressed, lossless) - **-format** PPM 24-bit PPM (uncompressed) - **-format** PPM48 48-bit PPM (uncompressed) - **-format** PSD48 48-bit PSD (uncompressed) - **-format** RGB 24-bit SGI RGB (uncompressed) - **-format** TARGA 24-bit Targa (uncompressed) \*\* ### Animation Related Options: - **-camfile** filename.cam Animate using file of camera positions. - **-nosave** Disable writing of output frames to disk (only used for doing real-time rendering) ## SEE ALSO The full documentation for **Tachyon** is maintained as a Texinfo manual. If the **info** and **Tachyon** programs are properly installed at your site, the command - **info Tachyon** should give you access to the complete manual.