Show HN: WebGL-powered oscilloscope emulator(m1el.github.io)

42 pointsby m1elvor 11 Jahren16 comments

m1el.github.io

Show HN: WebGL-powered oscilloscope emulator

http://m1el.github.io/woscope/

9 comments

hughesvor 11 Jahren

That was one of the highest-fidelity visual experiences I've had on the web. I know there's no more information being displayed than what's in the audio channel, but I feel like this sort of experience just wouldn't translate well to any current video encoding, even at enormous file sizes.

Thanks for building this and for sharing!

m1elvor 11 Jahren

You're very welcome.

virgil_disgr4cevor 11 Jahren

Nice, I assume this is XY-mode by stereo channel. I did a little writeup here: http://cookingwithsound.com/an-xy-mode-oscilloscope-in-your-...

If you want to get in touch, I'd love to add more detail about how the code works :)

m1elvor 11 Jahren

I am planning to do a writeup on the core algorithm myself.

But in a few words: linear algebra and integrals.

*Edit

phkahlervor 11 Jahren

That could be an awesome previewer for .ild files (Laser Show stuff). The OpenLase and VectorBoy projects might like to hear from you.

It would may also be really nice for rendering the old vector games in MAME - I have a Cinematronics emulator that can run about 13 vector games too, mostly black and white.

jkleiservor 11 Jahren

I like it, but I would prefer a plain oscilloscope function, and being able to connect it to a Web Audio source of mine.

m1elvor 11 Jahren

Maybe I'll try doing that this weekend.

supercodervor 11 Jahren

SyntaxError: Unexpected use of reserved word 'let' in strict mode

Udovor 11 Jahren

Are you on Firefox by chance? I discovered this week that Firefox doesn't do ES6 on included <script> files unless you specify an explicit content type enabling it (which in turn breaks things on all other browsers).

m1elvor 11 Jahren

It should work in Firefox, there is a workaround specifically for that.

Udovor 11 Jahren

It does work for me on FF, although it prints an error to console before the workaround kicks in.

kepakkovor 11 Jahren

Uncaught TypeError: Cannot read property 'clearColor' of null

m1elvor 11 Jahren

You don't have webgl, duh.

Udovor 11 Jahren

I'm not sure "duh" is the right response here.

thrownaway2424vor 11 Jahren

It says I don't have webgl, but chrome://gpu says "WebGL: Hardware accelerated". Not the first time I've run into this.

leetbulbvor 11 Jahren

khrậng. amazing.

[deleted]vor 11 Jahren