Profile

Cover photo
Steven Wittens
AboutPosts

Stream

Steven Wittens

Shared publicly  - 
 
The Fourier Transform explained with graphical algebra (and MathBox).

http://acko.net/files/gltalks/toolsforthought/
(laptop / desktop recommended)
50
44
Mike Stay's profile photoLuka Radulovic's profile photoSteven Wittens's profile photoPhilippe Beaudoin's profile photo
13 comments
 
Loved this. It's simply an amazing tool for building an intuition! I'll reuse it a lot.

One quick suggestion, partly to help answer Luka's question above: it may help to have a "sine generator". Maybe two sliders to create a single sine wave at different frequencies and phases. This would make it obvious that a wave at the right frequency "wraps around" and creates "constructive interference" that causes a vector to appear on the complex plane, but any other frequency causes "destructive interference" that cancels out.
Add a comment...

Steven Wittens

Shared publicly  - 
 
Available in English, French and Dutch.
Internet activism and media in the age of social justice.
3
1
Mike Stay's profile photoMarius Buliga's profile photo
4 comments
 
I never liked "the point" point of view. I mentioned this in a comment of the share. "The point" is a claim for a compressed version which invites propaganda.  I shared the post because it resonates with my impressions about internet activism. The social net is a great thing, but (that's my impression, not in the article) due to the way the medium is structured (technically), it does not engage the participants into the discussion, excepting those who have some propaganda to advance, or morons of any extreme blend.  I witnessed this, in situations unrelated to those mentioned in the article, far more interesting than gamergate. It's normal, I lived 20 years in propaganda and it does not impress me any more. But it does concern me, and, I bet, many others, this combination of passivity and brainwashing activism, because it rots the action. Now I get, I think, really to the point, if there is one: among all the net communities I am aware about, I respect the  most 4chan and the kind of discussion from there. The point, if you ask me, is this:
"What if it turned out that Occupy's much desired "new way of interacting with others" already existed since 2001, in the form of the Anonymous Image Board? Perhaps not coincidentally an invention from Japan, a culture that turned repression into an art form. A board where identity and status has no value by default and as a result, entirely different rules of engagement apply, building on the practices of early cyberspace.
It does not lead to a utopian forum where intellectuals debate like they're on the set of Star Trek. Quite the opposite, this is humans you're dealing with. It leads to places that mix deep skepticism with casual verbal and graphic abuse, making everyone and everything equally worthless and fake until proven otherwise. Bringing identity as a general point of argument is not just unwelcome, it is shouted down with exactly those insults that deal it the most damage. Relevancy comes from resilience, taking offense is an instant defeat. Ingenuity, hyperbole and humor are the controlling measures to balance it out, acting like constant bullshit tests against the uninspired and intellectually bankrupt. Ideas are forced to compete to remain relevant, just with one caveat: no topic is off limits. Especially taboos. It's not exactly for the faint of heart."
Add a comment...

Steven Wittens

Shared publicly  - 
 
Previous demo + one operator (polar) and an internet radio station.

http://fm.acko.net/
22
4
Ricardo Cabello's profile photoSteven Wittens's profile photoJosh Lawhun's profile photo
4 comments
 
Hi Steven, This looks amazing! I used your avs visuals to make some music videos on YouTube. I Love your work!! You are so awesome :)
Add a comment...

Steven Wittens

Shared publicly  - 
 
6 months in the making, but ShaderGraph 2 is now finally released. The last tweak was a diagram generator for debugging/documentation purposes.

This is what a MathBox 2 shader looks like. It's not as scary as it looks, the nameless blocks are mostly just transpositions or other one liners. Caveat emptor of course, but if this works for MathBox, it just might work for you too.

This is the glowing lines part of this demo: http://acko.net/files/dump/mathbox2/vertexcolor.html
https://github.com/unconed/shadergraph
27
3
Alexander Mordvintsev's profile photoSteven Wittens's profile photoSamuel Williams's profile photoAndroid Free's profile photo
12 comments
 
 steven want a help from you fuistes think the creator of this plugin nsecito know how I can activate it in desktop mode for Windows 7.8 and 10 is only active in window XP as I can help if you have to make a payment or donation solutions for this problem that is not activated there's the video shows that let you thanks

https://www.facebook.com/jose.a.alvarez.311/videos/o.59230744796/10203555252161239/?type=2&theater&notif_t=video_processed
Add a comment...

Steven Wittens

Shared publicly  - 
 
MathBox², work in progress. Slides with inline notes from my talk at the SIGGRAPH WebGL BOF.
vec4 getSample(vec3 xyz); vec4 getFramesSample(vec3 xyz) { vec4 c = getSample(xyz + vec3( 0.0, 0.0, 1.0)); vec3 t = getSample(xyz + vec3( 0.0, 1.0, 0.0)).xyz; vec3 b = getSample(xyz + vec3( 0.0,-1.0, 0.0)).xyz; vec3 l = getSample(xyz + vec3(-1.0, 0.0, 0.0)).xyz; vec3 r = getSample(xyz + vec3( ...
49
20
Darren Schebek's profile photoNicholas 'UltimApe' Perry's profile photoHugo Diaz's profile photoMurray Bourne's profile photo
6 comments
 
I'm also eagerly awaiting MathBox2. Any progress updates?
Add a comment...

Steven Wittens

Shared publicly  - 
 
Finished adding curved viewports to MathBox 2. The resulting test was so pretty it had to be a miniature demo. Chrome only for now, it's still alpha. (♫ Jeff Beal - House of Cards)
28
4
Vít Tuček's profile photo
 
What's the soundtrack?
Add a comment...

Steven Wittens

Shared publicly  - 
 
Vector field rendering experiment #2. Getting really great depth and structure out of this.

http://acko.net/files/dump/tiles/fieldlines2.html
43
7
oliver marks's profile photoEden S.-G.'s profile photoBoris Borcic's profile photo
3 comments
 
This is more electric than complex numbers, which makes you particularly respectable as an eventual voicer of objections to replacing the discouraging "complex" in "complex numbers" by a sexier "electric" or "electromagnetic". Electric numbers, isn't that electrifying?
Add a comment...

Steven Wittens

Shared publicly  - 
 
My talk "The Pixel Factory", from Full Stack Fest 2015, now with video. 

http://acko.net/tv/pixelfactory/

Was great fun at a great event. Check out the other talks here:

https://www.youtube.com/playlist?list=PLe9psSNJBf77PgzYZ2yId2RfUkd9_lMMr
A blog about random hacks, graphics and design, math and other ephemera.
27
6
victor noagbodji's profile photoRay Lee's profile photo
2 comments
Ray Lee
 
That was a fun talk, thanks!
Add a comment...

Steven Wittens

Shared publicly  - 
 
I created a MathBox google group here: https://groups.google.com/forum/#!forum/mathbox
9
2
Add a comment...

Steven Wittens

Shared publicly  - 
 
MathBox². Hope it runs for you.

http://acko.net/files/mathbox2/iframe-readyornot.html

Details of the entire affair are on acko.net, as usual.
38
13
Darren Schebek's profile photoGiacomo Farneti's profile photoBrendan Annable's profile photoSteven Wittens's profile photo
7 comments
 
+Brendan Annable The presentation iframes are driven by setting <present index={0...N}>. So stepping through programmatically is trivial. Clocks, transitions and steppers can be triggered this way, but you can also control each element directly instead of being on auto.
Add a comment...

Steven Wittens

Shared publicly  - 
 
Another operator, another test case.
http://acko.net/files/dump/mathbox2/cylindrical.html
28
2
Steven Wittens's profile photoKostya Kanishev's profile photoMartti Leppänen's profile photo
6 comments
 
For some reason it seems to be terribly slow on Safari 8, where as Chrome runs it just fine.
Add a comment...

Steven Wittens

Shared publicly  - 
 
Beat me to the punch... native 4D in mathbox, because why not.
22
1
Add a comment...
Work
Occupation
Wizard
Links
Other profiles