man povray-3.5 (Commandes) - POV-Ray: The Persistence of Vision Ray Tracer
NAME
povray - POV-Ray: The Persistence of Vision Ray Tracer
SYNOPSIS
povray [+Ooutput_file] [+/-option ...] [input_file]
povray [+Iinput_file] [+Ooutput_file] [+/-option ...] [INI_file]
DESCRIPTION
POV-Ray is a free, full-featured ray tracer, written and maintained by a team of volunteers on the Internet. On the Unix platform POV-Ray can be compiled with support for preview capabilities using the X Window System. Under Linux, POV-Ray can optionally use the SVGA library to preview renderings.
This manual page only lists the basic POV-Ray and Unix specific features and command-line options for this version of POV-Ray. For a complete description of the features of POV-Ray and its scene description language, or for a better explanation of the meaning of the command-line and INI file options, please consult the documentation that should accompany all versions of POV-Ray. On some sites this will be installed in /usr/local/share/doc/povray-3.5. Some of the Unix-specific features are:
- Support for X Windows display automatically uses the best visual class and deepest depth available. For visuals that do not support 24 bits of color per pixel, Floyd-Steinberg error diffusion dithering is used, along with a dynamically allocated and optimized palette to produce the best display possible with the current visual, depth, and available colormap.
- ICCCM compliance for the X Windows version means that the preview window will behave like standard X Windows programs, communicate properly with the window manager, and will accept the standard command-line options. See X(1) for more information.
- Support for SVGAlib display automatically detects the available SVGA display modes to choose the size which best fits the rendered image. When rendering an image that is too large for the current display, the displayed image is scaled to fit on the screen. For displays that do not support true-color modes, Floyd-Steinberg dithering is used.
- ASCII graphics in the text-mode version allow a basic view of the current rendering on text-only terminals.
- An interrupt handler allows rendering to be interrupted in a safe way, so that any data not currently written to disk will be saved before exiting. Control-C or SIGINT will cause a user abort, and save the current rendering, before exiting. See kill(1) for more information.
- Platform and architecture independent rendering means the same scene will render in the same way on all computers and operating systems (with the exception of the rendering speed, of course).
OPTIONS
Options can be specified with either a leading '+' or a leading '-'. Many options are switches, meaning a '+' turns the option on, and a '-' turns the option off. For other options, it doesn't matter if a '+' or a '-' is used. Most options cannot have spaces in them so you should specify +FN rather than +F N, and combining options is not allowed, so +SC is very different from +S +C. Options are not case sensitive.
The command-line options are shown below with their corresponding INI file options. If the same option is specified multiple times, whether in INI files or on the command-line, the last such option overrides any previous ones, with the exception of the +L or Library_Path option, which is cumulative.
Parsing options:
- I<input_file_name> or Input_File_Name=file
- Specifies the input file to use. If the input file name is '-', the scene description will be read from the standard input. The
- HI<header_include_file_name> or Include_Header=file
- Specifies a file as the first include file of a scene file. This can be used to always include a specific set of default include files used by all your scenes.
- L<library_path> or Library_Path=path
- Specifies a directory to search for input files, include files, fonts, and image maps, if the specified file is not in the current directory. This may be specified multiple times to increase the number of directories to search.
- MVn.n or Version=float
- Treat scene files as if they were version n.n instead of the current version. This may be overridden from within the scene file.
- SU or Split_Unions=bool
- Split bounded CSG unions if children are finite. This allows automatic bounding of CSG objects to take place.
- UR or Remove_Bounds=bool
- Remove unnecessary bounding objects. This allows automatic bounding of older scene files to take place.
Output options:
- ?[01234567] or help[01234567]
- Display help on command-line options for section 0 through 7. Note that most shells will treat the ? as a shell globbing character unless it is escaped.
- Hnn or Height=integer
- The image should be nn pixels high.
- Wnn or Width=integer
- The image should be nn pixels wide.
- SRnn or Start_Row=integer
- Start the rendering at row nn from the top of the screen.
- SR0.nn or Start_Row=float
- Start the rendering nn percent from the top of the screen.
- ERnn or End_Row=integer
- End the rendering at row nn from the top of the screen.
- ER0.nn or End_Row=float
- End the rendering at nn percent from the top of the screen.
- SCnn or Start_Column=integer
- Start the rendering at column nn from the left of the screen.
- SC0.nn or Start_Column=float
- Start the rendering at nn percent from the left of the screen.
- ECnn or Start_Column=integer
- End the rendering at column nn from the left of the screen.
- EC0.nn or Start_Column=float
- End the rendering at nn percent from the left of the screen.
- C or Continue_Trace=bool
- Continue a previously interrupted trace.
- P or Pause_When_Done=bool
- If previewing, pause when the rendering is complete before closing the window.
- V or Verbose=bool
- Output verbose status messages on the progress of the rendering.
- X or Test_Abort=bool
- Enable the 'q' and 'Q' keys to interrupt a rendering in progress.
- Xnn or Test_Abort_Count=integer
- Only check every nn pixels for a user abort.
Output options - display related:
- D[0][GHT] or Display=bool Palette=char
- Display the rendering in progress, optionally specifying the palette. The only valid X Windows palette option is G, which forces grayscale preview. The X Windows palette is based on the visual used, whether selected automatically by POV-Ray or via the -visual option. SVGA options are T for 24-bit true-color, and H for 15-bit high-color display, in addition to the default 256-color palette. To specify the palette, you must first specify the display type (the second character, shown here as '0') for compatibility reasons, even though it is ignored in Unix versions.
- SPnn or Preview_Start_Size=integer
- Start mosaic preview with blocks nn pixels square.
- EPnn or Preview_End_Size=integer
- End mosaic preview with blocks nn pixels square.
- UD or Draw_Vistas=bool
- Draw vista rectangles before rendering.
Output options - file related:
- Bnn or Buffer_Output=bool Buffer_Size=integer
- Use an output buffer nn kilobytes in size.
- F[CNPT][n] or Output_to_File=bool Output_File_Type=char
- Store the rendered image using one of the available formats, namely Compressed TGA, PNG, PPM, and TGA. PNG format supports the n option to specify the number of bits per color, where 5 <= n <= 16. The default is 8.
- O<output_file> or Output_File_Name=file
- Write the output to the file named output_file, or the standard output if '-' is given as the output file name.
- HT[CNPTX] or Histogram_Type=char
- Create a CPU utilization histogram image in format x. Available formats are Comma-separated values (CSV), PNG grayscale, PPM POV heightfield, uncompressed TGA POV heightfield, or X for no histogram generation.
- HN<histogram_file_name> or Histogram_Name=file
- Output the histogram to the specified file.
- HSx.y or Histogram_Grid_Size=float
- Divide the histogram into x columns and y rows of buckets.
Tracing options:
- MBnn or Bounding=bool Bounding_Threshold=integer
- Use automatic bounding slabs if more than nn objects are in the scene.
- Qn or Quality=integer
- Render at quality n. Qualities range from 0 for rough images and 9 for complete ray-tracing and textures, and 10 and 11 add radiosity.
- A0.n or Antialias=bool Antialias_Threshold=integer
- Do antialiasing on the pixels until the difference between adjacent pixels is less that 0.n, or the maximum recursion depth is reached.
- AMn or Sampling_Method=integer
- Specify the method of antialiasing used, non-adaptive (n = 1), or adaptive antialiasing (n = 2).
- Jn.n or Jitter=bool Jitter_Amount=float
- Specify maximum radius, in pixels, that antialiased samples should be jittered from their true centers.
- Rn or Antialias_Depth=integer
- Set the maximum recursion depth for antialiased pixel sub-sampling.
- UL or Light_Buffer=bool
- Use light buffer to speed up rendering.
- UV or Vista_Buffer=bool
- Use vista buffer to speed up rendering.
Animation options:
- Kn.n or Clock=float
- Render a single frame of an animation with the clock value n.n.
- KFInn or Initial_Frame=integer
- Specify the initial frame number for an animation.
- KFFnn or Final_Frame=integer
- Specify the final frame number for an animation. This must be set at a value other that 1 in order to render multiple frames at once.
- KIn.n or Initial_Clock=float
- Specify the clock value for the initial frame of an animation.
- KFn.n or Final_Clock=float
- Specify the clock value for the frame final of an animation.
- SFnn or Subset_Start_Frame=integer
- Render a subset of frames from an animation, starting at frame nn.
- SF0.nn or Subset_Start_Frame=float
- Render a subset of frames from an animation, starting nn percent into the animation.
- EFnn or Subset_End_Frame=integer
- Render a subset of frames from an animation, stopping at frame nn.
- EF0.nn or Subset_End_Frame=float
- Render a subset of frames from an animation, stopping nn percent into the animation.
- KC or Cyclic_Animation=bool
- Generate clock values for a cyclic animation.
- UF or Field_Render=bool
- Render alternate frames using odd/even fields, suitable for interlaced output.
- UO or Odd_Field=bool
- Start a field rendered animation on the odd field, rather than the even field.
Redirecting options:
- GI<name> or Create_Ini=bool or Create_Ini=file
- Write all INI parameters to a file named after the input scene file, or one with the specified name.
- G[ADFRSW]<name> or <Stream>_File=bool or <Stream>_File=file
- Write the stream to the console and/or the specified file. The streams are All_File (except status), Debug_File, Fatal_File, Render_File, Statistics_File, and the Warning_File.
X Window System options
In addition to the standard command-line options, POV-Ray recognizes additional command-line switches related to the X Window System. See X(1) for a complete description of these options.
- -display <display_name>
- Display preview on display_name rather than the default display. This is meant to be used to change the display to a remote host. The normal dispay option +d is still valid.
- -geometry [WIDTHxHEIGHT][+XOFF+YOFF]
- Render the image with WIDTH and HEIGHT as the dimensions, and locate the window XOFF from the left edge, and YOFF from the top edge of the screen (or if negative the right and bottom edges respectively). The WIDTH and HEIGHT, if given, override any previous Wnn and Hnn settings.
- -help
- Display the X Window System-specific options. Use -H by itself on the command-line to output the general POV-Ray options.
- -icon
- Start the preview window as an icon.
- -title <window_title>
- Override the default preview window title with window_title.
- -visual <visual_type>
- Use the deepest visual of visual_type, if available, instead of the automatically selected visual. Valid visuals are StaticGray, GrayScale, StaticColor, PseudoColor, TrueColor, or DirectColor.
RESOURCES
Currently no X resource or app-default files are supported for the X Windows options.
FILES
POV-Ray for Unix allows a povray.ini file in the current directory to override the individual setting in .povrayrc. POV-Ray looks for initial configuration information, like the Library_Path settings, which gives the location for the standard include files, first in the environment variable $POVINI, then in ./povray.ini, then in $HOME/.povrayrc, then in /usr/local/lib/povray35/povray.ini. The directory can be changed at compile-time using the --prefix option of the configure script.
povlegal.doc should be accompany all installations of POV-Ray, and outlines specific conditions and restrictions on the POV-Ray software. A condition of povlegal.doc requires that documentation, INI, and scene files be available to all users of POV-Ray Scene and INI files are typically installed in /usr/local/lib/povray35, with documentation in /usr/local/share/doc/povray-3.5, but these may be in other locations on some systems.
The most recent version of POV-Ray and its documentation can always be retrieved via anonymous FTP at ftp.povray.org, or via HTTP at http://www.povray.org/, as well as many other locations.
SEE ALSO
COPYRIGHT
POV-Ray is Copyright (C) 1991, 2002 the POV-Ray Development Team. Although it is distributed as freeware, it is NOT PUBLIC DOMAIN software. POV-Ray is subject to the restrictions as defined in povlegal.doc.
X Windows is Copyright (C) 1984 - 1991 the Massachusetts Institute of Technology, and also Copyright (C) 1992 - 1996 the X Consortium, Inc.
TRADEMARKS
Persistence of Vision, POV-Ray, and POV-Help are trademarks of the POV-Ray Development Team.
BUGS
The SVGA version does not currently generate an optimized grayscale palette for grayscale preview, so displays using the G palette option will use very few gray levels, and a few non-gray colors.
Before reporting a bug to the authors, you should make sure you have the latest version of the software, in case the bug has already been fixed. There are a large number of POV-Ray users on the USENET newsgroup comp.graphics.rendering.raytracing that may be able to help you with your problem. If you are having problems compiling, installing, or running the software, you should seek help locally or on USENET, rather than from the authors.
If you have a repeatable bug in the most recent version, try to isolate the bug in the smallest scene file possible. The POV-Ray Team Co-ordinator is Chris Young, and can be reached at team-coord@povray.org. Do not send large binary or uuencoded files to Chris without first asking permission to do so.
AUTHORS
The primary developers, in alphabetical order are:
Steve Anger Dieter Bayer Chris Cason Chris Dailey Andreas Dilger Steve Demlow Alexander Enzmann Dan Farmer Timothy Wegner Chris Young
Major contributing authors, in alphabetical order are:
Steve A. Bennett David K. Buck Aaron A. Collins Pascal Massimino Jim McElhiney Douglas Muir Bill Pulver Robert Skinner Zsolt Szalavari Scott Taylor Drew Wells
Other authors are listed in the documentation.
ACKNOWLEDGEMENT
POV-Ray is based on DKBTrace 2.12 by David K. Buck and Aaron A. Collins.