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Subject: Re: [boost] Formal review request: static size matrix/vector linear algebra library (Boost) LA
From: Agustín K-ballo Bergé (kaballo86_at_[hidden])
Date: 2010-02-04 19:49:45

El 02/02/2010 06:35 p.m., Emil Dotchevski escribió:
> On Tue, Feb 2, 2010 at 12:42 PM, Thomas Klimpel
> Nothing has changed because nobody pointed out anything that needed to
> be changed in the preliminary review. There are a few concerns, like
> the use of operator| ("pipe") to implement type-safe casting but I am
> not aware of a better solution.

I have been happily using this library for a while, and I have a couple
of suggestions/observations.

· I've often found the need to forward the result of some Boost.LA
operation. To do so, I'm using types from the detail namespace to
specify the return type. Until auto and decltype, and for C++03 support,
a result_of namespace ala Boost.Fusion would be nice.

· Support for subscript operator may be introduced via vref/mref. So
vref( any_conforming_vertex_type )[ I ] could be used for both direct
indexing and swizzling (as mentioned at your blog).

· Support for "complex swizzling expressions" would be nice. I've just
made that name up, but I'm referring to things like 'v1[Y,-X]' or
'v1|(Y,-X)' (again, as mentioned at your blog).

· More algorithms to operate on vectors and matrices are needed,
otherwise people would be reinventing the same generic algorithms.
Ideally, I would like to see everything that is available at GLSL,
including component-wise boolean operations.

Finally, I'm not keen on the library name, but I don't have a better one
to suggest.

Let me say I have in the past unsuccessfully tried to implement a
library like yours myself. I find the abstraction incredibly useful, and
I am glad that you managed to write it.


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