Hi Bela On Wed, Dec 01, 2010 at 12:47:00PM +0100, Bela Biro wrote: > > I am Bela Biro, the main developer of PostworkShop, an artistic image > manipulation program (an "auto-painter" if you want). > > PostworkShop is a commercial software, but if we understood it well, your > brush engine is LGPL licensed, so we tentatively integrated it into our > manual retouch and mask painting window. If it stays there we will of course > give due credit in our About box and if you want we can also mention it on > our website. > > Is it OK with you?
Yes it was my intention to allow such use of the brush engine. I have realized however that the LGPL is a very bad license for this, because there is no "binary library interface" that would allow to run a closed-source application with a user-modified library. The LGPL tries to enforce this right. I want to relicence the brushlib (not MyPaint) under a BSD license when I find time. Most of the brushlib (probably >90%) was written by myself but I'll have to check with the other contributors before doing this. I would be very happy to see your changes to the brushlib, if you made any. This was my main reason for choosing LGPL at the time. But you have my permission to use my part of the brushlib code even if you keep your modifications secret. > I have another question, about the brushes. I don't know how they are > licensed. Me neither... Only few of them (I think only those of deevad) have an explicit license: http://www.davidrevoy.com/?article33/mypaint-v3-brushkit You can consider the brushes that I made myself as public domain. However many brushes are teamwork, especially if you include the icons. You probably have to assume that they are GPL, since they were contributed to a GPL project, if this helps... You will find full names and email addresses and other details of brush contributors in the git history. "cd mypaint; git log brushes" > Can we integrate the MyPaint built-in brushes? You can integrate those of Deevad, obviously, with proper attribution. You will have to decide yourself what to do with the others. Email address of the brush authors are available in the git history and log messages in the brushes directory. > Bela Biro > > Xycod Ltd. > > > PS: may I have your permission to forward this email with quotes to the public mypaint mailing list? This also gives you the legal security of me making a public statement ;-) PPS: out of curiosity, did you use the tiledsurface.hpp code also, with its draw_dab() implementation, or just the brush engine? Officially the surface is GPL, not LGPL, but I will happily relicense it to BSD too. -- Martin Renold _______________________________________________ Mypaint-discuss mailing list [email protected] https://mail.gna.org/listinfo/mypaint-discuss
