KSEG 0.402

KSEG is a program for exploring Euclidean geometry.
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KSEG is a Free (GPL) interactive geometry program for exploring Euclidean geometry. It runs on Unix-based platforms (according to users, it also compiles and runs on Mac OS X and should run on anything that Qt supports).

You create a construction, such as a triangle with a circumcenter, and then, as you drag verteces of the triangle, you can see the circumcenter moving in real time. Of course, you can do a lot more than that--see the feature list below.

KSEG can be used in the classroom, for personal exploration of geometry, or for making high-quality figures for LaTeX. It is very fast, stable, and the UI has been designed for efficiency and consistency.

I can usually make a construction in KSEG in less than half the time it takes me to do it with similar programs. Despite the name, it is Qt based and does not require KDE to run.

KSEG was inspired by the Geometer's Sketchpad, but it goes beyond the functionality that Sketchpad provides.

Here are some key features of "KSEG":

· Fast core which can support large constructions
· Free/GPL-runs on Linux (and probably most other systems which support Qt)
· Supports multiple languages
· Fully Documented
· Construction of points, segments, rays, lines, circles, and arcs
· Make measurements
· Transformations (rotation, translation, scaling, reflection)
· Construction of adaptively sampled loci for better quality and speed
· Reverse dragging
· Infinite undo/redo
· Ability to easily redefine points to "edit" drawings
· Easy to use editable scripting/macro with support for recursion
· Pretty formulas for calculations-with my libkformula
· Pretty colors, fonts, etc.
· View panning/zooming and multiple simultaneous views
· Export view to image file, including antialiased option
· Printing
· Selection Groups--group a bunch of objects, then select them later with two clicks

Languages so far:

· Portuguese -- Jorge Barros de Abreu
· French -- Jean-Philippe Martin (UI) and Marie-Paule Canou, Josée Goyer, Michèle Sidobre (Help)
· German -- Andreas Goebel
· Norwegian Bokmal -- Skolelinux
· Hungarian -- Gabor Nagy
· Spanish -- Eduardo Dueñez
· Dutch -- Bram Schoenmakers
· Italian -- Giancarlo Bassi
· Partial Japanese -- Linux Magazine (ASCII) (UI) Yokota Hiroshi (Help)
· Welsh -- Kevin Donnelly
· Turkish -- Vildan Ozturk
· Russian -- Anton Petrunin
· Chinese -- Xu Xianghua


· You will need at least Qt 3.x. Qt 2.x may work, but I haven't tested it much. If your system is strange, you may need to edit the makefile to compile it (but don't worry, only the first 6 lines are relevant).

What's New in This Release:

· Added patch to export SVG
· Minor bugfixes to allow Russian translation

last updated on:
September 15th, 2005, 15:10 GMT
license type:
GPL (GNU General Public License) 
developed by:
Ilya Baran
ROOT \ Science and Engineering \ Mathematics
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