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how can i get it in jitter

July 18, 2007 | 8:55 am

dear all here are some nice pictures showing 3d transformation and video processing done with vvvv, i would like to understand how i can achieve this in jitter..
thanks a lot
michele

http://www.onoxo.net/clean_exp/clean_exp.php

http://www.onoxo.net/pipet_filters/pipet_filters.php


July 18, 2007 | 9:49 pm


July 19, 2007 | 7:19 am

thanks for your suggestions!
michele


July 19, 2007 | 7:55 am

I’ve looked at some of the videos on that site. Not only are the
images not initially erased (allowing the picture to create those 3d
forms) but it seems that part of the image is able to be wiped away at
a later time.

http://www.onoxo.net/clean_exp_m/clean_exp_m.php

setting a low erase value (or value of 0) in the alpha channel will
leave a trail of the image as it’s moved through space, but how could
the image trail be erased at a later time without effecting other
parts of the image that it may overlap?

Bryan

http://www.bryanteoh.com
http://www.icelu.net

http://www.ksod.net


July 19, 2007 | 12:16 pm

Perhaps by not actually having anything to do with erasing. My guess
would be that there’s a 3D pbject (possibly stored as a display list)
that is drawn 1 to N number of times with slightly different rotation
and translation parameters. At time t=0, there is only one object.
As time increases, there will be say 20 object( a max). Then there’s
a corresponding ramp down where the 20 objects go down to 1 with the
ones in back droping off first. Seems like you could do with with JS
and a variably sized FIFO buffer of translate rotate transformations.

wes

On 7/19/07, Bryan Teoh wrote:
> I’ve looked at some of the videos on that site. Not only are the
> images not initially erased (allowing the picture to create those 3d
> forms) but it seems that part of the image is able to be wiped away at
> a later time.
>
> http://www.onoxo.net/clean_exp_m/clean_exp_m.php
>
> setting a low erase value (or value of 0) in the alpha channel will
> leave a trail of the image as it’s moved through space, but how could
> the image trail be erased at a later time without effecting other
> parts of the image that it may overlap?
>
> Bryan
> –
> http://www.bryanteoh.com
> http://www.icelu.net
> http://www.ksod.net
>


July 19, 2007 | 4:43 pm

Quote: wesley.hoke@gmail.com wrote on Thu, 19 July 2007 14:16
—————————————————-
> Perhaps by not actually having anything to do with erasing.
Not if you want to achieve what’s going on in the videos, but it could still be done that way to do the stills the OP talked about.

> My guess would be that there’s a 3D pbject (possibly stored as a display list)
> that is drawn 1 to N number of times with slightly different rotation
> and translation parameters.
Yup. After seeing the (very neat) videos, that would be my guess too. I do similar things by parsing the cmdlist from jit.gl.sketch and then deleting, FIFO-style. Pretty cool, once you get around the weirdness of cmdlist… especially fun if you start deleting entries at random or in different orders, too.

a.


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