Free geometry software software for linux

Geometry Description Markup Language (GDML) workpackage is primarly ment to provide geometry data exchange format for the LCG applications. The workpackage consists of the GDML Schema part, which is a fully self-consistent definition of the GDML syntax and the GDML I/O part which provides means for writing out and reading in GDML files.
The GDML Schema does not depend in any way on the GDML I/O packages. In particular, new extensions to the GDML I/O packages can be implemented (interfaces to new application, like for instance visualisation, editors, etc), while the GDML Schema definition remains unchanged.
Enhancements:
- The loop machinery was improved so that any volume can be used in a loop.
- An installation script was added along with support for auxiliary volume information.
- A SimpleExtension example that shows how to extend GDML with custom elements was added.
- The obsolete PyGDML package was removed.

Geomview is an interactive 3D viewing program for Unix. Geomview lets you view and manipulate three-dimensional objects: you use the mouse to rotate, translate, zoom in and out, and so on.

Geomview can be used as a standalone viewer for static objects or as a display engine for other programs which produce dynamically changing geometry. Geomview can display objects described in a variety of file formats. Geomview comes with a wide selection of example objects, and you can create your own objects too.

Geomview runs on most Unix platforms, including GNU/Linux. Geomview can run under Microsoft Windows using Cygwin. Geomview is free software available under the terms of the GNU Lesser General Public License (GPL).

You can also use Geomview to handle the display of data coming from another program that is running simultaneously. As the other program changes the data, the Geomview image reflects the changes. Programs that generate objects and use Geomview to display them are called external modules. External modules can control almost all aspects of Geomview. The idea here is that many aspects of the display and interaction parts of geometry software are independent of the geometric content and can be collected together in a single piece of software that can be used in a wide variety of situations. The author of the external module can then concentrate on implementing the desired algorithm and leave the display aspects to Geomview. Geomview comes with a collection of sample external modules, and the manual describes how to write your own.

Geomview allows multiple independently controllable objects and cameras. It provides interactive control for motion, appearances (including lighting, shading, and materials), picking on an object, edge or vertex level, snapshots in many image file, PostScript, or Renderman RIB format, and adding or deleting objects is provided through direct mouse manipulation, control panels, and keyboard shortcuts.

Geomview supports the following simple data types: polyhedra with shared vertices (.off), quadrilaterals, rectangular meshes, vectors, and Bezier surface patches of arbitrary degree including rational patches. Object hierarchies can be constructed with lists of objects and instances of object(s) transformed by one or many 4x4 matrices. Arbitrary portions of changing hierarchies may be transmitted by creating named references.

The full specification for object file formats is in the OOGL (Object Oriented Graphics Language) Reference section of the Geomview manual. If you already have Geomview you might want to try out the OOGL tutorial.

Geomview can be used as a Mathematica graphics output device; this makes viewing Mathematica graphics much more interactive. The same is true for Maple. Geomview began as an effort at the Geometry Center at the University of Minnesota to provide interactive geometry software which is particularly appropriate for mathematics research and education. In particular, Geomview can display objects in hyperbolic and spherical space as well as Euclidean space.

ATGeogebra provides a simple archetype product to display GeoGebra files.

GeoGebra is a free and multi-platform dynamic mathematics software for schools that joins geometry, algebra and calculus .

If you have any interest in educational technology, you should take a look at this fine piece of software: http://www.geogebra.org

The basic idea of ATGeogebra is to be able to show Geogebra worksheet files ( .ggb ) within a plone site.

The .ggb files have to be loaded with Geogebras java applet and the product does that for you.

The software jar files are inside the product’s skins directory and all you have to do is to create a "Geogebra Activity" item and upload the .ggb file.

You will find a sample Geogebra worksheet ( .ggb ) inside the product’s samples directory ( same as shown in the screenshot above ).

If you use CMFContentPanels, a special viewlet will be installed.

This is a initial release. Its very simple, but fully functional.

Grid Wars 2 is a space shooter arcade game.

Grid Wars2 is basically a PC version of the popular Xbox 360 game, Geometry Wars. Made by Mark Incitti, this release features less special effects compared to the original but also new controls to cater for players who do not own a dual analog joypad.

Your small ship sits in a one-screen grid and vectorized enemies spawn to attack. Use your any-directional gun to stay alive while you rake in points. Along the way a few power-ups will give you a hand, and theres always the emergency screen-clearing bomb you can unleash.

The hybrid option control allows a player to use both mouse and keyboard for ship movement as well as aiming their shots.

Xystray is a simple implementation of the freedesktop.org systray specification (a.k.a. notification area) for the X Window system.

It is meant for use in simple desktop environments which do not provide such facility by default, such as FVWM. Xystray project may also run under GNOME or KDE if the default tray program is disabled.

Installation

Is very simple. Just download, untar, make and copy xystray where you like (/usr/X11/bin, ~/bin/ etc.). Then make your window manager start it automatically when you start your session.

Command line options

-iconmax n

Sets xystray to contain maximum of n arranged in one row or column depending on -vertical option. It is a synonym for -iconcols n -iconrows 1.

-iconrows n

Sets the number of rows to keep icons (default: 2).

-iconcols n

Sets the number of columns to keep icons (default 4).

-iconpadding n

Sets the spacing around icons (default: 0).

-iconsize n

Sets the size of each icon. The default value is 22 pixels. It is not recomended to change it.

-vertical

Now it is useful only with -iconmax option. When used both, Xystray form its window a single column of icons.

Since Xystray uses Xt Toolkit it also accepts generic options like -bg or -geometry.

Photo resize is a service menu for KDE that changes the selected pictures to the chosen size (550x550px, 500x500px, 450x450px,200x200px,150x150px).

The geometry will be hold. The script will size the pictures to their longer side.

Attention: The pictures will be overwritten!!

xtermcontrol enables dynamic control of XFree86 xterm properties. xtermcontrol project makes it easy to change colors, titles, fonts, and the geometry of a running xterm, as well as to report the current settings of the properties.
Window manipulations such as (de)iconify, raise and lower, maximize and restore, and reset are also supported. It also lets advanced users issue any xterm control sequence.
Options:
--fg=COLOR
Set foreground color to COLOR.
--bg=COLOR
Set background color to COLOR.
--colorN=COLOR
Set Nth [0-15] color to COLOR.
--highlight=COLOR
Set highlight color to COLOR.
--cursor=COLOR
Set cursor color to COLOR.
--mouse-fg=COLOR
Set mouse pointer foreground color to COLOR.
--mouse-fg=COLOR
Set mouse pointer background color to COLOR.
--font=FONT
Set font name to FONT. Alternatively it is possible to specify a fontmenu index as #[0-6] or navigate the fontmenu by relative sizes as #+N or #-N, where N is an optional integer.
--title=STRING
Set window title. Note that mechanisms like the Bash PROMPT_COMMAND may overwrite the title. Se also How to change the title of an xterm.
--geometry=WIDTHxHEIGHT+XOFF+YOFF
Set size and/or position. Through its control sequences the xterm only recognize positive XOFF and YOFF offsets, which are pixels relative to the upper left hand corner of the display. xtermcontrol is therefore unable to handle negative offsets as described in the X Geometry Specifications and therefore truncates negative values to zero.
--get-fg
Report foreground color.
--get-bg
Report background color.
--get-colorN
Report Nth [0-15] color.
--get-highlight
Report highlight color.
--get-cursor
Report cursor color.
--get-mouse-fg
Report mouse pointer foreground color.
--get-mouse-bg
Report mouse pointer background color.
--get-font
Report font.
--get-title
Report window title.
--get-geometry
Report size and position. The size of the text area is reported in characters and the position is reported in pixels relative to the upper left hand corner of the display.
--maximize
Maximize window.
--restore
Restore maximized window.
--iconify
Iconify window.
--de-iconify
De-iconify window.
--raise
Raise window.
--lower
Lower window.
--reset
Full reset.
--raw=CTLSEQS
Issue the raw control sequences CTLSEQS.
--file=FILE
Force xtermcontrol to read configurations from FILE instead of the standard personal initialization file ~/.xtermcontrol.
--force, -f
Skip TERM environment variable check.
--verbose, -v
Print verbose reports.
--help, -h
Print help and exit.
--version
Print the version number and exit.
Enhancements:
- src/configuration.c: Fix regexp, so the #rrggbb way to specify a color works in configuration file. Reported by Olle Mulmo.
- doc/xtermcontrol.roff: add BUGS section describing how install needs to setuid root on some broken systems.