lightspeed - Shows how objects moving at relativistic speeds look like

Distribution: Debian 8 (Jessie)
Repository: Debian Main amd64
Package name: lightspeed
Package version: 1.2a
Package release: 10
Package architecture: amd64
Package type: deb
Installed size: 283 B
Download size: 90.95 KB
Official Mirror:
Light Speed! is an OpenGL-based program which illustrates the effects of special relativity on the appearance of moving objects. When an object accelerates past a few million meters per second, these effects begin to grow noticeable, becoming more and more pronounced as the speed of light is approached. These relativistic effects are viewpoint-dependent, and include shifts in length, object hue, brightness and shape. The moving object is, by default, a geometric lattice. 3D Studio and LightWave 3D objects may be imported as well. Best of all, the simulator is completely interactive, rendering the exotic distortions in real-time!



    Source package: lightspeed

    Install Howto

    1. Update the package index:
      # sudo apt-get update
    2. Install lightspeed deb package:
      # sudo apt-get install lightspeed


    • /usr/bin/lightspeed
    • /usr/share/doc/lightspeed/MATH.gz
    • /usr/share/doc/lightspeed/README
    • /usr/share/doc/lightspeed/README.Debian
    • /usr/share/doc/lightspeed/TODO
    • /usr/share/doc/lightspeed/changelog.Debian.gz
    • /usr/share/doc/lightspeed/changelog.gz
    • /usr/share/doc/lightspeed/copyright
    • /usr/share/locale/es/LC_MESSAGES/
    • /usr/share/man/man1/lightspeed.1.gz
    • /usr/share/menu/lightspeed


    2014-03-01 - Boris Pek <> lightspeed (1.2a-10) unstable; urgency=medium * QA upload. * Bump Standards-Version to 3.9.5 (was 3.9.3): no changes required. * Fix FTBFS using Clang. (Closes: #739568) [Thanks to Arthur Marble] * Fix lintian note vcs-field-not-canonical. * Update get-orig-source section in debian/rules.

    2012-11-20 - Boris Pek <> lightspeed (1.2a-9) unstable; urgency=low * QA upload. * Bumped Standards-Version to 3.9.3 (was * Bumped debhelper version to 9 (was 4.0.0); updated debian/compat. * Added file debian/source/format: format 1.0 is still used in this package. * Added files debian/docs and debian/manpages to simplify debian/rules. * Deleted files config/config.guess and config/config.sub. Files from the package autotools-dev are used instead. * Rewritten debian/rules: - now dh is used instead of direct dh_* commands - added --as-needed option to LDFLAGS - added section get-orig-source (uscan is used) - used symlinks for config/config.guess and config/config.sub - fixed lintian warnings: + hardening-no-relro + hardening-no-fortify-functions + debian-rules-ignores-make-clean-error + debian-rules-missing-recommended-target build-arch + debian-rules-missing-recommended-target build-indep + dh-clean-k-is-deprecated * Updated debian/control: - added Homepage field - added Vcs-* fields (Git repo in collab-maint is available now) - changed build dependency from libpng12-dev to libpng-dev (Closes: #662418) - changed build dependency from ftgl-dev to libftgl-dev (Closes: #485799) - changed build dependency from libtiff4-dev to libtiff-dev (preparation for switching to libtiff5 in Debian Jessie) - added build dependency from autotools-dev - added ${misc:Depends} to list of dependencies - lightspeed now suggests recommended font ttf-dejavu instead of font ttf-bitstream-vera which is going to be removed from the repository (Closes: #461272) * Updated debian/copyright: fixed lintian warning debian-copyright-file-uses-obsolete-national-encoding. * Updated debian/watch: fixed lintian warning debian-watch-file-should-use-sf-redirector. (Closes: #449901) * Patched file src/snapshot.c. [Thanks to Nobuhiro Iwamatsu] (Closes: #649787) But build with libpng version 1.5.10 now impossible because `pkg-config --cflags gtk+-2.0` returns error: "Package 'libpng12', required by 'GdkPixbuf', not found"

    2011-11-05 - Ola Lundqvist <> lightspeed (1.2a-8) unstable; urgency=low * Package maintainer set to Debian QA Group <>.

    2006-12-12 - Ola Lundqvist <> lightspeed (1.2a-7) unstable; urgency=high * Workaround for FcFini problem in fontconfig package. Commenting out that line and now the program can start. Closes: #402402. It should be changed back when the cause is found.

    2006-05-15 - A Mennucc1 <> lightspeed (1.2a-6) unstable; urgency=low * NMU : converted to GTK2, for bug 354650 * changed GL dependency to : libgl1-mesa-dev | libgl-dev * use 'fontconfig' to find a font for FTGL

    2006-05-13 - A Mennucc1 <> lightspeed (1.2a-5) experimental; urgency=low * use UTF-8 for widgets * use FTGL library for fonts in GL, and FreeSans from 'ttf-freefont' ; this may support UTF-8 in GL (I hope )

    2006-05-11 - A Mennucc1 <> lightspeed (1.2a-4) experimental; urgency=low * update to Standards-Version: (no changes) * bug fixed: saving snapshot works * bug fixed: gettext works * minor bugs: while saving, the counter is not shown on screen

    2006-05-07 - A Mennucc1 <> lightspeed (1.2a-3) experimental; urgency=low * delete debian/post{inst,rm}.debhelper * convert to GTK2 * install * bug: saving the snapshot does not work OK