Fun with Pseudocolor

Screen Shot 2015-03-17 at 10.14.36 AM

A shader experiment gone horribly, beautifully wrong.

I was tinkering with some GLSL shaders in Processing, and I needed a way to visualize a value that smoothly changes from 0 to 1, showing a lot more than the 256 levels of gray that you’d normally see. So I wrote a little pseudocolor function that spirals through colorspace from black to white, hitting various hues along the way. It’s fun, and pretty, and very rungy-chungy, so I thought I’d post it here.

vec4 pseudo3(float val) {

    float reps = 20.0;
    float pi = 3.14159256;
    float bright = val;
    float con = 0.25 - 0.20 * cos(val * pi * 2.0);
    float sat = 0.66 - 0.25 * cos(val * pi * 2.0);

    return vec4(sin(val*pi*reps)*con+bright,
                sin(val*pi*reps - pi*0.663 * sat)*con+bright,
                sin(val*pi*reps - pi*1.333 * sat)*con+bright,
                1.0);
}

Here's the path the above function traces through the RGB cube of colorspace.
Here’s the path the above function traces through the RGB cube of colorspace.

MTV Top 20 Video Countdown (1994)

MTV Top 20 Video Countdown (1994) from Cassidy Curtis on Vimeo.

In the 1990’s, it was typical for production companies to start their demo reels with a clock-wipe countdown. Some companies would use this as an opportunity to say something about their style, and do custom animation. (Will Vinton Studios, I remember, had a particularly cool stop-motion countdown at that time.) I thought it would be cool for Xaos to have a countdown that reflected our particular style of work, so I created this drippy ink effect counting down from 10 to 1, and a drippy version of the Xaos logo, which we put at the beginning and end of our demo reel respectively.

Some time after this, our producer got a call from MTV. They had this show called “Top 20 Video Countdown”. They wanted to use this effect for the bumpers and interstitials. Could we add the numbers 11 through 20? Our producer said “of course”, and charged them a lot of money. But it didn’t really take me that long.

Brick-a-Brac (1995)

Brick-a-Brac (1995) from Cassidy Curtis on Vimeo.

Here is my first short film. I made this at PDI in 1995, during a gap between commercials. I modeled and rigged the characters, did most of the animation, and developed the wobbly ink-line look.

brick1

The pigeons’ torso was a metaball surface driven by a series of spheres along a spline between the head and the body, which were both separate IK joints (so I could easily get that pigeon-head movement style without counteranimating.) The eyes, beak, legs and wings were separate objects, each of which got rendered in its own separate pass. Each layer had its vector outline traced (using a tool originally written for scanning corporate photostats for flying logos!) I processed the curves using a procedural scripting language to give them some physics and personality, and then rendered them as black ink lines with varying thickness (using a tool written by Drew Olbrich). Finally, I ran the rendered lines through some image processing filters to get the edge darkening effect, and did some iterated stochastic silhouette dilation to add random ink blotches where the lines were thickest. Simple, really! ;-)

Meta-Perceptual Helmets

hammerhead

Cleary Connolly, an artist in Ireland, has built a lovely series of perception-altering helmets, including the “Hammerhead” (above), which is effectively a head-mounted, lens-based version of the Telestereoscope. The helmets look beautifully crafted and durable. The site has some great photos of the work in progress, and don’t miss the drawings of what they’ve got planned for the next helmets in the series. (I especially love the Siamese Helmet concept– great fun!)

Thanks to Sasha Magee for the link.

The Making of MADinSpain 2014

Making of MAD14 by Domestika from MAD by Domestika on Vimeo.

Here’s a cool making-of video about the design event I spoke at this past summer in Madrid. It was such a great experience. The organizers made a point of creating opportunities for the participants to really get to know each other, in keeping with the event’s theme of “connection”. I learned a lot, had tons of fun, and made some great new friends from halfway around the world. If you ever get the chance to go to this conference, don’t hesitate, just do it!

Eyeteleporter and Pinhole Selfies

From a planet not far from the Telestereoscope, two projects have just entered our universe…

The Eyeteleporter, a wearable cardboard periscope that displaces your vision about two feet in any direction:

eyeteleport_montage

And Pinhole Selfies, a delightful mashup of retro tech with millennial idiom:

camera

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Hat tip to Brock Hanson for the links.

Update: I just realized that the pinhole selfie photographer, Ignas Kutavicius, is the same fellow who invented the amazing solargraphy technique of capturing the sun’s movement with a long exposure pinhole camera. Brilliant!

solargraph1

Randy Cook speaks out on “digital makeup”

There has been much hubbub in the animation community lately around actor Andy Serkis’s continuing assertion that he is the sole author of mocap-based characters like Gollum from Lord of the Rings, and that animators merely provide “digital makeup”, and play no creative role whatsoever in those performances. My friends who worked on those movies have always told me privately that this is far from the truth. Now Randall William Cook, Director of Animation on all three “Lord of the Rings” movies, has finally come out in public with a detailed explanation of how Gollum’s performance was actually created.

Here are Mr. Cook’s thoughts, reproduced with his permission:

———

Andy Serkis has been throwing the term “Digital Makeup” around again, and causing some pretty fervid reactions as a result. He has his detractors and defenders, among them animators and motion capture editors, people who have met Andy and found him a nice bloke, people who are interested in the art of animation or the in art of acting or in both. But so far I have seen nothing from anybody who was in the trenches and actually worked on Gollum, so I suppose it’s time I weighed in on the matter.

My name’s Randall William Cook, and I was the Director of Animation on the LORD OF THE RINGS trilogy.

Continue reading Randy Cook speaks out on “digital makeup”

Cassidy Curtis's splendid display of colorful things.