>>> It seems that SAGE is also missing a geometry sketchpad component. It >>> would be nice to add the GPLed 2D/3D geometry sketchpad program known >>> as Geogebra (http://www.geogebra.org). >> >> This has been discussed before. I think it has serious licensing >> incompatibility issues and also uses java.
Making it easy to include Geogebra based applets in the Sage notebook would be a worthwhile thing to do, and I'm sure can be done in a way that avoids licensing problems. The Geogebra project itself is confused about software licenses -- they write on their download page "You are free to copy, distribute and transmit GeoGebra for non-commercial purposes. Please see the GeoGebra license for details." The license itself on code is according to the license:"GeoGebra's source code is subject to the GNU General Public License:" So in fact they cannot restrict its use to non-commercial purposes. I'll write to the project for clarification in a moment. The fact that Geogebra applets use java is certainly not a show stopper for them having something to do with Sage, since jmol also uses java. It might make a lot of sense e.g., to have an optional geogebra spkg that makes it trivial for people to create a bunch of geogebra applets in the sage notebook... >>> Finally, there is a very good graphing program known as K3DSurf >>> (http://k3dsurf.sourceforge.net/) that makes very good 3D/4D/5D graph >>> models. Please consider adding this program into SAGE as well. >> >> Were you able to download and compile the source code for this? >> The website (or my computer) was very slow for me, so I gae up looking. >> If you did so, what OS did you use? Do you know the license for k3dsurf? > > > k3dsurf is a standard package that can be installed on ubuntu through > the package manager. It is nice, but I think it's a kde thing, which > would be a problem on Mac OSX, Windows, and other platforms we do or > would like to support. k3dsurf is a kde gui program, hence completely unsuitable for inclusion in Sage. Plus sage already has 3d surface plotting. William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
