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entries for category "after effects"
david van brink // Mon 2010.11.22 21:15 // {after effects}

(AE: expression trivia)

(The parentheses in the post title mean that this post is essentially parenthetical.)

Arggh. Developing Pixel Bender kernels and plug-ins, my test files kept behaving erratically. Expression indexes were to blame. Each time I added or removed a parameter, the numbers all shift.

effect_expr.png

So you see, first enabling the expression produces effect("my_effect")(8). But it depends on the exact order of the parameters!

But effect("my_effect")("param 9") depends on the name.

I think I like the second one better, because I’m pretty good about nailing down my parameter names, but more likely to move them around order-wise.

(See?)

oh, i dont know. what do you think?


david van brink // Sun 2010.06.27 22:41 // {after effects pixel bender}

AE: Omino Stamp, a Pixel Bender Filter

Early this month, we visited the San Jose Museum of Quilts and Textiles, featuring patterns and clothing by the Hawaiian designer Alfred Shaheen. Great stuff! Yeah, I have a closet full of Hawaiian shirts.

alfred_shaheen_print.jpg

(Show show goes til August 8, worth visiting. On the first Friday of the month, many of the galleries on First Street in San Jose, CA are open late, definitely a nice night out.)

Since I adore repetition, and halftoning, I got to wondering if I could recreate some of the patterns programmatically. The “Omino Stamper” filter runs in After Effects and attempts to do this.

download ==> omino_stamp.pbk, an After Effects filter.

The idea is pretty simple: draw a “stamp image” in a pattern which can be affected by the source image. It’s a little bit like a particle effect, but more mechanical.

Here’s the controls and few examples, which look nothing like Hawaiian shirts.

stamper_screenshot.png

A quick rundown:

  • The pattern- settings adjust the stamping grid
  • The stamp- settings adjust orientation and size of the stampimage image
  • The stampOverlaps setting controls how many nearby stamps are computed for each pixel; slows down the render a bit but is necessary for closely-spaced stamping. (If you see missing corners and such, increase this setting. (Those of you familiar with Pixel Bender will immediately apprehend why this is so. :)
  • The affectsStampSizeAmount, affectsStampColorAmount, and affectsStampRotationAmount settings control the halftoning features of the filter.

Here’s a basic stamp:

Next, we adjust the bricking a little, to make it less square-y:

And let the color of the underlying image affect the stamp color:

How about affect the rotation, instead of the color? Kinda wild:

Or back to basics, let the underlying image affect the stamping-size:

Here’s a festive little animation playing with the effect a bit, and does include a Tiki god or two.

WKJwCt0ik_E

click for
http://www.youtube.com/v/WKJwCt0ik_E&hl=en_US&fs=1&rel=0&color1=0x3a3a3a&color2=0x999999

download ==> omino_stamp.pbk, an After Effects filter.

Enjoy!

2 comments
omino stamp for after effects, a pixel bender filter // Tue 2010.06.29 11:0411:04 am

[…] 29, 2010 Omino continues with their onlsaught of Pixel Bender Plugins for Adobe After Effects, with a new one – Omino Stamp. Omino Stamp is a Pixel Bender Filter that was inspired in part by “Hawaiian Shirt” […]

Happy 1st Linky Friday Everybody! « Kevin Goldsmith // Fri 2010.07.30 17:395:39 pm

[…] posted another Pixel Bender filter oriented towards After Effects users on his Omino Pixel Blog: Omino Stamp a Pixel Bender Filter. This is really useful for creating some nice patterned fills. Pattern example from Omino […]

oh, i dont know. what do you think?


david van brink // Fri 2010.06.11 19:22 // {after effects}

AE: Short-take, Rain

Easy Rain

Here’s a cute one. Nothing deep or advanced, but it was fun. It’s a way to get a very simple and cheap “rain” in After Effects.

  1. Take a tiny bit of Noise, and blur it in one direction with Fast Blur.
  2. This makes very, very dim “streaks”. Use Threshold to make them visible again.
  3. Fast Blur it a little in both directions to make the edges smooth again.
  4. Rotate the whole layer, for angled rain.

Easy peasy!

rain1.mp4

click for
http://omino.com/pixelblog/wp-content/uploads/2010/06/rain1.mp4

Here’s the AE setup for it. Trivial! Small adjustments of the parameters can get all sorts of interesting results.

What about CC Rain?

Well you know, apart from the joy (cussedness) of doing it the hard way… CC Rain makes relatively slow well-defined rain streaks. Depending what look you like, combining CC Rain with the more random movement described above is pretty nice, too.

rain2.mp4

click for
http://omino.com/pixelblog/wp-content/uploads/2010/06/rain2.mp4

If you like, here’s the self-contained tiny AE project. ==> just_rain.aep

oh, i dont know. what do you think?


david van brink // Tue 2010.06.1 21:29 // {after effects}

Omino Plugins Link Revision

Just an administrative note. I’ve got a set of free After Effects plugins available. The old web-page links were a bit confused, especially with respect to which ones work on After Effects CS3 and CS4, and which are for After Effects CS5.

The new link is http://omino.com/pixelblog/omino-ae-plugins/, and also appears as a “Page” in the blog nav column, and should be much clearer.

oh, i dont know. what do you think?



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