For people reading this who aren't so familier with blender/python module stuff - you can use numpy (or any py module) with blender now, its just a hassle if you want to re-distribute your scripts for others to use, you need to instruct them on how to include the module or bundle blender with it yourself. for many python modules I would not want to bundle them but numpy is quite a popular math library for python.
Though I never used numpy seriously (extending mathutils instead) but there are many things numpy can do that mathutils will never be able to do (and wouldn't want it to do). a few things we need to consider / agree on... - how does this fit with mathutils? (IMHO its fairly clear - mathutils is graphics oriented, numpy is for people who need multi-dim matrices and more advanced functionality, mathutils is integrated with bpy/bmesh/bge, numpy stays as an added extra you can use if you need it). -- core blender scripts can stay with mathutils unless they really need to use numpy. -- addons are free to use numpy. - blender should not depend on numpy (at least to begin with, numpy has headers we could include and integrate with it- but for now I prefer have it as optional for py devs). - download size - managed to get it down to 1.1mb compresed. 4.3m uncompressed (64bit Linux). don't think this is too bad. - numpy would be pre-compiled as python is now for osx and windows, for linux it can copy from the systems installation. - when to do this ? (think we could have it by 2.64) - who does this? - we need people to build on all platforms, after that theres no much to it (just extract ). +1 from me. On Mon, Apr 23, 2012 at 7:37 PM, <[email protected]> wrote: > Hi, > > I was talking to Campbell about integrating this patch > > http://projects.blender.org/tracker/?func=detail&atid=127&aid=30908&group_id=9 > > which would expose several matrix solvers from the Eigen3 library > (included with blender) to python. > > > The question came up if it would be better to integrate numpy istead. > > First of all why would this be good/needed: > > I can't speak for everyone but having the least squares solvers > available within > Blenders python interface would be quite nice for plane fitting, camera > calibration, ..., > and in my case the mesh alignment > (http://www.youtube.com/watch?v=LvF3ydZTzvM and > http://www.blensor.org/misc/media/videos/align_vertex.mkv) > > Campbell asked me to check on how much this would add to blender, > and thats where it gets bad: > > Even if all testing modules are removed from numpy it still clocks in > at ~12MB (bzip2 compressed ~3.7MB) which is not what one would call > lightweight :) > > So I ask everyone that needs it to comment on one of the three possible > solutions: > > 1. Include a stripped numpy version, which will add ~3.7MB to the > Blender download > 2. Use the above mentioned patch to expose some of the Eigen3 > functionality that is > shipped with Blender anyway > 3. Don't care, don't need > > I also would call to those devs who need numpy for other reasons, since > it is also > good for performance hungry computations. > > Best regards > Michael > > _______________________________________________ > Bf-committers mailing list > [email protected] > http://lists.blender.org/mailman/listinfo/bf-committers -- - Campbell _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
