Cycling 74 » Topic: Make matrix behave like matrixset

Make matrix behave like matrixset

Ignotus — Tue, 21 Oct 2008 04:35:16 +0000

I’ve looked at the Paramination path from Andrew Benson’s Jitter Recipes,
which stores multiple matrices of 1d control data in a matrix and then spits
them out one at a time, and wanted to do something similar with 2d data, in
this case all equal-sized images.

Of course, I can store equal sized images in a matrixset, but matrixset,
afaik, can’t have names and be used in more than one place in a patch. And
maybe I just want to meet the challenge of making a matrix behave like a
matrixset.

But my brain must be tired this evening, so I’ll ask if someone has already
solved this problem. I’m pretty sure it’s come up before, but a search of
the archives didn’t turn up any obvious answer.

cheers,

– Paul

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Re: Make matrix behave like matrixset

Wesley Smith — Tue, 21 Oct 2008 04:42:27 +0000

Indeed. You can use a 3D matrix for this purpose. There are a number
of examples in the forum. I have an abstraction in my xray.jit
objects called xray.jit.3dbuffer that you can use as is or take apart
for your own twisted purposes:

http://www.mat.ucsb.edu/~whsmith/xray.html

wes

Re: Make matrix behave like matrixset

Ignotus — Tue, 21 Oct 2008 04:48:07 +0000

Right, I stumbled across that, but haven’t yet tried it out. I guess I’m
obstinately trying to get jit.matrix to do the work just so at some point a
little light will go on in my head and I’ll say–aha, now I see how all
those layers are laid out, and I can now store and grab whatever I want.

But thanks, I will take a more serious look at xray.jit.3dbuffer.

– Paul

On Mon, Oct 20, 2008 at 11:42 PM, Wesley Smith wrote:

> Indeed. You can use a 3D matrix for this purpose. There are a number
> of examples in the forum. I have an abstraction in my xray.jit
> objects called xray.jit.3dbuffer that you can use as is or take apart
> for your own twisted purposes:
> http://www.mat.ucsb.edu/~whsmith/xray.html< http://www.mat.ucsb.edu/%7Ewhsmith/xray.html>
>
> wes
>

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Re: Make matrix behave like matrixset

Wesley Smith — Tue, 21 Oct 2008 04:56:11 +0000

On Mon, Oct 20, 2008 at 9:48 PM, Paul Hertz wrote:
> Right, I stumbled across that, but haven’t yet tried it out. I guess I’m
> obstinately trying to get jit.matrix to do the work just so at some point a
> little light will go on in my head and I’ll say–aha, now I see how all
> those layers are laid out, and I can now store and grab whatever I want.

It’s an abstraction around a jit.matrix object, so if you open it up
you’ll see one way to use a jit.matrix object as a matrixset.

wes

Re: Make matrix behave like matrixset

Ignotus — Tue, 21 Oct 2008 05:09:52 +0000

Yup, I’m looking at it right now. Makes things much clearer, even if it is
after midnight and cloudy here.

Looking forward to checking out the source code you included, too, once I
have some time to dig in.

thanks,

– Paul

On Mon, Oct 20, 2008 at 11:56 PM, Wesley Smith wrote:

> On Mon, Oct 20, 2008 at 9:48 PM, Paul Hertz wrote:
> > Right, I stumbled across that, but haven’t yet tried it out. I guess I’m
> > obstinately trying to get jit.matrix to do the work just so at some point
> a
> > little light will go on in my head and I’ll say–aha, now I see how all
> > those layers are laid out, and I can now store and grab whatever I want.
>
> It’s an abstraction around a jit.matrix object, so if you open it up
> you’ll see one way to use a jit.matrix object as a matrixset.
>
> wes
>

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—– |(*,+,#,=)(#,=,*,+)(=,#,+,*)(+,*,=,#)| —–

Re: Make matrix behave like matrixset

Roby Steinmetzer — Tue, 21 Oct 2008 20:29:02 +0000

On 21 oct. 08, at 06:35, Paul Hertz wrote:
> Of course, I can store equal sized images in a matrixset, but
> matrixset, afaik, can’t have names and be used in more than one
> place in a patch.

You might look at the matrixlist example inside the jitter-examples/
java folder.
Statement from the matrixlist example patch: “named matrixlists share
data”.

Roby