Dweets awesomed by u/rsrsrs

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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veubeke

remix of d/1893 by u/veubeke

function u(t) {

for(i=1920;a=i--/400;x.fillRect(i,t*70+_*15+i*i%t,1,99))_=C(a+t)*3+C(a-t)*8-8,x.fillStyle=t<6?'#cef':`hsl(${170-t*4},80%,${40-t*2-_+S(_)}%)`

Mar 5 2017 7:51 PM UTC

}// 140/140

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u/sfz

Pastoral
u/tomkh

cool procedural-gfx in 140 chars !
u/sigveseb

blue skies! grass looks less 3d now though, which I guess is the price for those extra characters.
u/veubeke

I’ve made a second version with different trade-offs. I like both for different reasons. https://www.dwitter.net/d/1911
u/donbright

amazin
u/joeytwiddle

#landscape #scene
u/katkip

#realistic

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tomkh

function u(t) {

for(c.width=i=1920;i--;){for(g=30,h=63&i,v=i>>6,e=g,k=20;k--;)r=S(k-t)+1-h/g,d=C(3*k+t)+1-v/g,e-=1/(d*d+r*r+.02);x.fillRect(h*g,v*g+99,e,e)}

Mar 5 2017 7:34 PM UTC

}// 140/140

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u/FireFly

Sweet! I need to read up on how to metaballs
u/SpecialAgent

Nice!
u/donbright

great!!!
u/iverjo

Impressive!
u/iverjo

#metaballs
u/vain

This looks so fucking cool! Unbelievable this is produced by only 140 chars of code

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veubeke

function u(t) {

for(i=1920;a=i--/400;x.fillRect(i,400+t*70+_*15,1,99))_=C(a+t)*3+C(a-t)*8+(r=i*i/t%1),
x.fillStyle=`hsl(${140-t*4+_},80%,${40-t*2-_-r*9}%)`

Mar 5 2017 5:05 PM UTC

}// 140/140

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u/iverjo

Nice :) This reminds me of the classic Windows XP desktop background image
u/sigveseb

very nice! can we squeeze in a blue sky?
u/veubeke

I’m trying ^^
u/magna

Not enough Unicode cows. Back to work!
u/Beginner

Amazing!
u/FENRIR

windows xp start up sound went to my head
u/iverjo

#grass
u/joeytwiddle

#landscape
u/vain

Cool and interested way to draw this landscape!

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FireFly

function u(t) {

t||x.translate(X=960,540,c.onmousemove=e=>X=e.offsetX);for(i=80;i--;x.rotate(8))x.fillStyle=`hsl(${X},80%,${i}%)`,x.fillRect(i,S(t)*960,i,i)

Feb 28 2017 9:39 PM UTC

}// 140/140

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Interactive demo! Move your mouse to change colour!

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u/FireFly

Thanks to veubeke and p01 for golfing tips :)
u/lionleaf

Oh wow! That's amazing
u/sigveseb

really nice!
u/iverjo

Sick!
u/profit

really cool!
u/lionleaf

On mobile you can tap at different locations for different colors
u/sfacci

ridiculously awesome
u/SpecialAgent

Excellent! And packed full of useful technical tricks, double whammy!
u/Xen

Done Re-mi(X)en
u/jaemiejaemie

borrowed the code used for capturing the mouse x on #4296, thank you
u/iverjo

#interactive
u/lionleaf

#spiral

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New_Core

function u(t) {

w=c.width=128;for(i=w*w;i--;)x.fillStyle=R(0,0,0,Math.random()),x.fillRect(i%w,i%(w-1),1,1);x.font='5em A';x.fillText("☠",25,65);

Feb 28 2017 8:16 PM UTC

}// 129/140

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I did one with ImageData but the skull didnt fit in. (it was faster but not fast enough to size it up).

u/sfz

swank!
u/New_Core

#noise

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tbroadley

function u(t) {

c.width^=0;for(i=3;i++<11;)a=i*S(t)/4,x.beginPath(),x.arc(960,540,40*i,Math.min(t+a,t+3*a),Math.max(t+a,t+3*a)),x.lineWidth=i*i/5,x.stroke()

Feb 26 2017 5:40 AM UTC

}// 140/140

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u/sfz

sweet loader
u/Kalanchoe

mesmerizing!
u/Tosmatobeef

This is my favorite kind of loading animation
u/iverjo

#loading

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donbright

remix of d/1232 by u/iverjo

function u(t) {

a=2e3;c.width=a;for(i=2*a;i--;)p=S(t)*i/a+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(a/2+99*(S(p)+S(t)),i/4,99*d,1/(d+1)),x.fillStyle=R(i/9,d*a/8)

Feb 25 2017 1:54 AM UTC

}// 140/140

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u/iverjo

Nice :) Better colors than mine
u/iverjo

By saving golfing 2 characters I managed to make the twister bigger:
u/iverjo

c.width=a=2e3;for(i=2*a;i--;)p=S(t)*i/a+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(a/2+199*(S(p)+S(t)),i/4,199*d,1/(d+1)),x.fillStyle=R(i/9,d*a/8)
u/iverjo

A little more movement: c.width=a=2e3;for(i=2*a;i--;)d=C(p=S(t)*i/a+i%4/.637)-S(p),d>0&&x.fillRect(a/2+199*S(p)+399*C(t),i/4,199*d,1/(d+1)),x.fillStyle=R(i/9,d*a/8)
u/donbright

wow that is awesome!!! i really do miss how yours spins all the way around.
u/donbright

#twister

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iverjo

remix of d/89 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;i--;)p=3*t+S(t/2)*i/3e3+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(960+199*S(p)+249*S(t/.7+i/6e3),i/4-2,199*d,1/(d+1))

Feb 24 2017 6:50 PM UTC

}// 133/140

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u/SpecialAgent

nicely done!
u/Kalanchoe

Flawless!
u/donbright

oh wow, the shading!
u/sigveseb

Good twister! Can we add color?
u/iverjo

Color would be awesome :) Feel free to try to add it
u/sigveseb

https://www.dwitter.net/d/1267 red
u/iverjo

Here's a purple version. Had to make some compromises. https://www.dwitter.net/d/1278
u/donbright

i attempted a rainbow version https://www.dwitter.net/d/1282
u/iverjo

#twister
u/vain

nice twister

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iverjo

remix of d/104 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=2)s=3/(9.1-(t+i/99)%9),x.beginPath(),j=i*7+S(i*4+t+S(t)),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.6),x.stroke()

Feb 24 2017 6:47 PM UTC

}// 138/140

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u/SpecialAgent

my hat goes off to you sir!
u/Kalanchoe

That's unbelievable
u/iverjo

Try this one in fullscreen for a more immersive experience
u/Niklas

impressive!
u/donbright

:)
u/aendrew

This is incredible.
u/vonzo

reminds me to Gescom <3
u/hvge

http://www.pouet.net/prod.php?which=3397 ❤️
u/badthai

How did you come up with this?
u/iverjo

@badthai: First I made a classic tunnel effect (like this: https://www.dwitter.net/d/205). Then I made several remixes of it by tweaking parameters. This was one of the results. See also https://www.dwitter.net/d/106
u/iverjo

#tunnel
u/vain

cool segmented tunnel fly

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travis

remix of d/1130 by u/travis

function u(t) {

r=Math.random;g=69*r();b=186*r()+69;for(i=666;i--;){//fun7
l=(23*r())+1;x.fillStyle=R(9,g,b,r());x.fillRect(1920*r()-l/2,1080*r()-l/2,l,l);}

Feb 24 2017 4:49 AM UTC

}// 140/140

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u/katkip

#blue

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