[vwnc] vector and matrix math

Has anyone got vector and matrix (with ranks 3 and 4) math classes
they're willing to send me? Writing all those multiplications,
determinants, inversions, rotations, scalings, and transformations is
both tedious and error prone. I got some matrix math methods from
UNSTDIO but it hasn't got me even to the halfway point.

Thank you for your consideration,

Richard
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On Nov 12, 2009, at 5:46 PM, Richard Kulisz wrote:

> Has anyone got vector and matrix (with ranks 3 and 4) math classes
> they're willing to send me? Writing all those multiplications,
> determinants, inversions, rotations, scalings, and transformations is
> both tedious and error prone. I got some matrix math methods from
> UNSTDIO but it hasn't got me even to the halfway point.
>
> Thank you for your consideration,

OpenGL-Arithmetics has at least some of them in there. You might try  
that.

--
Travis Griggs
Objologist
One man's blue plane is another man's pink plane.


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If you intend to do heavy calculations, be aware it's far from optimized though.
For example, I was able to make the code used in the "VM vs GPU" example run 3 times faster with a few changes.

Cheers,
Henry

On Nov 13, 2009, at 6:29 30AM, Travis Griggs wrote:


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Richard,

what about the Smalltalk numerical analysis codes based on Didier
Besset's "Object-Oriented Implementation of Numerical Methods: An
Introduction with Java & Smalltalk", 2000. It has a really heavy part
about matrices.

The versions of the numerical code for different Smalltalk versions can
be found at http://sourceforge.net/projects/dhbnumerics/

Janos

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On
Behalf Of Richard Kulisz
Sent: Friday, November 13, 2009 2:46 AM
To: [hidden email]
Subject: [vwnc] vector and matrix math

Has anyone got vector and matrix (with ranks 3 and 4) math classes
they're willing to send me? Writing all those multiplications,
determinants, inversions, rotations, scalings, and transformations is
both tedious and error prone. I got some matrix math methods from
UNSTDIO but it hasn't got me even to the halfway point.

Thank you for your consideration,

Richard
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Hi, this is not a reply to Richard's question, but this question
reminds me of that Dan once said he had an implement of APL in 3 pages
of Squeak (yet he seemed to have lost his code). Anyone knows more
about this? I would like to use it since APL is array based.

On Fri, Nov 13, 2009 at 9:46 AM, Richard Kulisz <[hidden email]> wrote:


--
Best Regards,

Jim G
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This is actualy a reply to Richard.
Have you looked at "Smalltalk numerical analysis codes based on Didier  
Besset's "Object-Oriented Implementation of Numerical Methods: An  
Introduction with Java & Smalltalk", 2000, Morgan Kaufmann  
Publishers.".  Among all other stuff it contains a chapter on linear  
algebra with vectors and matrices.
It has a good implementation.
You can find it in sourceforge: "http://sourceforge.net/projects/dhbnumerics/ 
". IMHO it should be part of the "contributed" directory of visualworks.
Reinier van Oosten


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On Nov 18, 2009, at 10:02 AM, Jim Guo wrote:

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> Dan once said he had an implement of APL in 3 pages
> of Squeak (yet he seemed to have lost his code).

Dan Ingalls _is_ Fermat! :-)

Steve


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