Comments on: Radiohead + Open Data = JavaScript + Canvas Visualizations of their work

By: p01

p01 — Sat, 19 Jul 2008 19:51:52 +0000

Turns out that pre-sorting the point cloud by angle, optimizes the rendering a little and cut down the size of the data by ~25%

See the URL I pasted above.

By: LJHarb

LJHarb — Fri, 18 Jul 2008 21:26:27 +0000

Radiohead continues to pioneer new trends in the music scene… My colleague wrote a post on this also, ( http://evolvingmusic.wordpress.com/2008/07/16/radioheads-house-of-cards-video-a-reflection-of-our-digital-lives/ ).

It pleases me to see an amazing tech blog talking about good music, and vice versa elsewhere. :-)

By: p01

p01 — Fri, 18 Jul 2008 12:20:18 +0000

I may be using a higher FOV than you did in your tests because I found that perspective makes a nice difference. Beside it only costs about 2fps here for 6485 dots, rendering the point cloud at ~11 fps on my 3yo office computer in Opera 9.51.

By: sjoerdvisscher

sjoerdvisscher — Fri, 18 Jul 2008 11:41:42 +0000

p01: I found that perspective did not add much, it only reduces performance significantly. Using the angle for z-ordering is a good idea though.

By: p01

p01 — Thu, 17 Jul 2008 23:40:20 +0000

sjoerdvisscher: your version is missing the perspective projection. I hacked together an optimized version of House of Canvas based on Jacob's HiRes data set of 6485 dots. It runs at ~15 fps in Opera 9.51. Ordering the dots by angle should eliminate the occasional front to back overdraws at little to no cost.

By: lhankins

lhankins — Thu, 17 Jul 2008 22:45:06 +0000

Wow – RadioHead + Javascript, two of my Favorite Things !!!

RadioHead makes for great coding music (esp. In Rainbows), so I guess they know their audience :)

By: Dylan Schiemann

Dylan Schiemann — Thu, 17 Jul 2008 16:15:35 +0000

This is really cool. If there’s a band out there that “gets it” and has mainstream appeal and great music, it’s Radiohead…

By: sjoerdvisscher

sjoerdvisscher — Thu, 17 Jul 2008 15:20:27 +0000

I had the same idea: http://q42.nl/demos/radiohead/ I used only one in 20 frames, but using 100% of the points after filtering noise. It totals over 8MB. The points are sorted by color, because parsing the fillStyle property for every pixel was too slow. No sound though.