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              software version control visualization

                Copyright (C) 2009 Andrew Caudwell



1. Description
2. Requirements
3. Using Gource
4. Copyright

1. Description

OpenGL-based 3D visualisation tool for source control repositories.

The repository is displayed as a tree where the root of the repository is the
centre, directories are branches and files are leaves. Contributors to the
source code appear and disappear as they contribute to specific files and

2. Requirements

Gource's display is rendered using OpenGL and requires a 3D accelerated video
card to run.

3. Using Gource

gource <options> <path>


    -h, --help
            Help ('-H' for extended help).

            Set the viewport size. If -f is also supplied, will attempt to set
            the video mode to this also.

    -f, --fullscreen

    -w, --windowed

            Make the background transparent. Only really useful for screenshots.

    -p, --start-position POSITION
            Begin at some position in the log (between 0.0 and 1.0 or 'random').

        --stop-position  POSITION
            Stop (exit) at some position in the log (does not work with STDIN).

    -t, --stop-at-time SECONDS
            Stop (exit) after a specified number of seconds.

            Stop (exit) at the end of the log / stream.

            Loop back to the start of the log when the end is reached.

    -a, --auto-skip-seconds SECONDS
            Skip to next entry if nothing happens for a number of seconds.

    -s, --seconds-per-day SECONDS
            Speed of simulation in seconds per day.

            Realtime playback speed.

    -i, --file-idle-time SECONDS
            Time in seconds files remain idle before they are removed.

    -e, --elasticity FLOAT
            Elasticity of nodes.

    -b, --background-colour FFFFFF
            Background colour in hex. 

    --background-image IMAGE
        Set a background image.

    --logo IMAGE
        Logo to display in the foreground.

    --logo-offset XxY
        Offset position of the logo.

    --title TITLE
        Set a title.

    --font-size SIZE
        Font size.

    --font-colour FFFFFF
        Font colour in hex.

    --date-format FORMAT
            Specify display date string (strftime format).

    --log-command VCS
            Show the log command used by gource (git,cvs,hg,bzr)

    --log-format VCS
            Specify format of the log being read (git,cvs,hg,bzr,custom).
            Required when reading from STDIN.

            Get the git log of a branch other than the current one.

    --follow-user USER
            Have the camera automatically follow a particular user.

    --highlight-user USER
            Highlight the names of a particular user.

            Highlight the names of all users.

            Highlight the names of all directories.

    --file-filter REGEX
            Filter out any files matching a specified regular expression.

            Show filename extensions only.

    --user-filter REGEX
            Filter out any users matching a specified regular expression.

    --user-image-dir DIRECTORY
            Directory containing .jpg or .png images of users 
            (eg 'Full Name.png') to use as avatars.

    --default-user-image IMAGE
            Path of .jpg or .png to use as the default user image.

            Colourize user images.

    --crop AXIS
            Crop view on an axis (vertical,horizontal).

    --padding FLOAT
            Camera view padding.

            Enable multi-sampling.

    --bloom-multiplier FLOAT
            Adjust the amount of bloom.

    --bloom-intensity FLOAT
            Adjust the intensity of the bloom.

            Set the maximum number of files. Excess files will be discarded.

    --max-file-lag SECONDS
            Max time files of a commit can take to appear.

    --max-user-speed UNITS
            Max speed users can travel per second.

    --user-friction SECONDS
            Time users come to a complete hault.

    --user-scale SCALE
            Change scale of users.

    --camera-mode MODE
            Camera mode (overview,track).

            Disable automatic camera rotation.

            Hide one or more display elements from the list below:

            bloom     - bloom effect
            date      - current date
            dirnames  - names of directories
            files     - file icons
            filenames - names of files
            mouse     - mouse cursor
            progress  - progress bar widget
            tree      - animated tree structure
            users     - user avatars
            usernames - names of users

            Separate multiple elements with commas (eg 'mouse,progress')

    -o, --output-ppm-stream FILE
            Output a PPM image stream to a file ('-' for STDOUT).

            This will automatically hide the progress bar initially and
            enable 'stop-at-end' unless other behaviour is specified.

    -r, --output-framerate FPS
            Framerate of output (25,30,60). Used with --output-ppm-stream.

    --load-config CONFIG_FILE
            Load a gource conf file.

    --save-config CONFIG_FILE
            Save a gource conf file with the current options.

    --path PATH

    path    Either a supported version control directory, a pre-generated log
            file (see log commands or the custom log format), a gource conf
            file or '-' to read STDIN.

            If path is ommited, gource will attempt to read a log from the
            current directory.

Git, Bazaar and Mercurial Examples:

View the log of the respository in the current path:


View the log of a project in the specified directory:

    gource my-project-dir

Save a copy of the log using in a special log format and play it back
(example is for Git):

    cd my-git-project
    `gource --git-log-command` > my-git-project.log
    gource my-git-project.log

NOTE: --git-log-command assumes you have a recent version git of that supports
      all the options. You may need to modify the command line to work with an
      older version (changing %aN to %an for instance).

Other Version Control Systems:

Visit the Gource homepage for guides and examples of using Gource with other
version control systems:

    CVS       -
    SVN       -

Custom Log Format:

If you want to use Gource with something other than the supported systems,
there is a pipe ('|') delimited custom log format:

    timestamp - A unix timestamp of when the update occured.
    username  - The name of the user who made the update.
    type      - initial for the update type - (A)dded, (M)odified or (D)eleted.
    file      - Path of the file updated.
    colour    - A colour for the file in hex (FFFFFF) format. Optional.

Recording Videos:

See the guide on the homepage for examples of recording videos with Gource:


The time shown in the top left of the screen is set initially from the first
log entry read and is incremented according to the simulation speed 

Pressing SPACE at any time will pause/unpause the simulation. While paused you
may use the mouse to inspect the detail of individual files and users.

TAB cycles through selecting the current visible users.

The camera mode, either tracking activity or showing the entire code tree, can
be toggled using the Middle mouse button.

You can drag the left mouse button to manually control the camera. The right
mouse button rotates the view.

Interactive keyboard commands:

    (V)   Toggle camera mode
    (C)   Displays Gource logo
    (M)   Toggle mouse visibility
    (N)   Jump forward in time to next log entry.
    (+-)  Adjust simulation speed.
    (<>)  Adjust time scale.
    (TAB) Cycle through visible users
    (ESC) Quit

4. Copyright

Gource - software version control visualization
Copyright (C) 2009 Andrew Caudwell <>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <>.
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