[Bf-committers] How about adding boost uBLAS library to blender/extern?

joe joeedh at gmail.com
Sat Jan 24 04:26:20 CET 2009

We have other math libraries, you may want to look at them.  There's
intern/moto and source/blender/blenlib/BLI_arithb.h, there's also the
math stuff the various simulation code uses, such as the superlu
solver uv unwrapping uses, the laplacian solver bone heat uses (does
that use superlu too? I'm too tired to remember) etc.


On Fri, Jan 23, 2009 at 2:50 PM, Benoit Bolsee <benoit.bolsee at online.be> wrote:
> Hi,
> The new IK algorithms developed at the KUL use the uBLAS template library
> from boost for matrix definition and operation.
> In order to minimize code change when porting to Blender, I am asking if it
> would be acceptable to add that library in blender/extern.
> It is a template library, so it will not increase the size of the executable
> more than necessary. It allows high level abstraction and yet it is almost
> as fast as an add-hoc C implementation because it uses the advanced
> technique of template expressions. The drawback is that it requires a modern
> C compiler: gcc 3.2.3 and above, MSVC 7.1 and above, ICC 8.0 and above
> (older compiler are supported with an earlier version of the library). I
> guess this is not a limiting factor?
> In terms of number of files, I extracted a subset of boost that contains all
> the necessary files to compile uBLAS: 10Mb in 1650 files.
> The alternative is to implement add-hoc C functions or reuse the TNT
> template library that is used by IK_Solver (intern/iksolver/intern/TNT).
> This library is much smaller and provide similar functionality but it is not
> as fast.
> For the interested ones, I've started a wiki on the IK project:
> http://wiki.blender.org/index.php/GameEngineDev/RobotIKSolver
> /benoit
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