Dweets by u/sfz

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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sfz

remix of d/2515 by u/sfz

function u(t) {

c.width|=w=213
h=120
d=t?~~(t*60)%9?d:new Date%4:0
x.x=x.x||w
x.y=x.y||h
x.x+=d<2?2*d-1:0
x.y+=d>1?2*d-5:0
x.fillRect(x.x%w*9,x.y%h*9,99,99)

Apr 18 2017 7:43 AM UTC

}// 140/140

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Bit shoddy roomba

u/sfz

Or a cat toy!
u/Polyducks

It's alive!

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sfz

function u(t) {

s=255
z=s/3
m=~~(t*t)
a=m%2?s:z
b=m%2?z:s
for(i=s*2;i--;)x.fillStyle=R(i%2?a:b,z,i%2?b:a),x.fillRect(i%23*z-9,z*~~(i/23)-9,z,z)

Apr 18 2017 5:51 AM UTC

}// 127/140

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Seizure Warning!!! - but after about 30 seconds this should briefly look uniformly purple

u/Polyducks

I can see forever!!!
u/joeytwiddle

It was briefly purple for me but then it starting flipping on and off again. #horrible

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sfz

function u(t) {

w=213
h=120
d=t?~~(t*60)%9?d:new Date%4:0
x.x=x.x||w
x.y=x.y||h
x.x+=d<2?d<1?1:-1:0
x.y+=d>1?d>2?1:-1:0
x.fillRect(x.x%w*9,x.y%h*9,9,9)

Apr 18 2017 1:27 AM UTC

}// 135/140

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sfz

remix of d/2376 by u/magna

function u(t) {

for(i=0;i<(半=500);i++)x.fillStyle=R(0,i?w:0),x.fillRect(i?2*半+i*C(T=t-(Math.random()<3e-4)*.2):x.globalAlpha=.1,i?半+i*S(T):0,z=i?8:w=2e3,z)

Apr 1 2017 4:12 PM UTC

}// 139/140

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Green, but the blips are harder to see

u/sfz

Increasing alpha helps see them, but makes the line sweep less cool
u/magna

They are ninjas. Harder to see.
u/donbright

lol nice

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sfz

function u(t) {

c.width|=F=I=69
O=C(t/3)
for(i=F;i--;)I=S(t-i+I*I-O*O),X=i%3*(O-I)+4*I,Y=i/3%3*(I+O)+2*I,Z=i/9*(2-I+O),s=F/Z,x.fillRect(F*i+X*s,9*i+Y*s,s,s)

Mar 31 2017 5:43 AM UTC

}// 140/140

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Perspective thingy

u/cantelope

nice golfing
u/Qwitter

thumbs up :)

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sfz

remix of d/2351 by u/nonce

function u(t) {

c.width=w=512
with(x)fillRect(0,h=240,w,w),clearRect(t*999%w-31,h+7,93,9),font='9em a',fillText(['🚗','🚃','🚙'][~~(t/2)%3],w-(t*w&1023),h)

Mar 31 2017 4:25 AM UTC

}// 136/140

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sfz

function u(t) {

c.width|=h=540
D=new Date
for(i=h;i--;)I=S(t-i),O=C(t-i),o=!t?u[i]={x:D*i%h,y:D/i%h}:u[i],x.fillRect(2*h+2*o.x*O-o.y*I,h-o.y*O-o.x*I/3,7,4)

Mar 28 2017 7:48 AM UTC

}// 139/140

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Negative galaxy timelapse

u/sfz

if you want to get a laugh and ruin the magic, remove the -i from I and Our :}
u/sfz

*O
u/donbright

lol nice

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sfz

remix of d/2313 by u/tapgiles

function u(t) {

with(x)!t?translate(960,a=540):beginPath(),moveTo(a,0),rotate(9e6*t/~new Date),lineTo(a,0),strokeStyle=`hsla(${t*9},99%,50%,${t%1}`,stroke()

Mar 26 2017 8:08 PM UTC

}// 140/140

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Give it a minute

Show more comments…
u/donbright

i wound up with a golden pentagon, i love it
u/donbright

i wound up with a golden pentagon, i love it
u/tapgiles

Not bad ^^
u/nonce

wow so cool, also great pro tip: you can leave off the ')' in an hsl/hsla string!
u/sfz

found that one by accident
u/z3vin

Parentheses trick doesn't seem work on iPhone safari :(

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sfz

function u(t) {

c.width=(w=99)*2
O=C(t)
P=S(t-4*O)
Q=C(t+3*P)
for(Z=w;Z--;)q=Z+t,m=S(q+Z%3),n=C(q+Z/3),X=P*O+Q*Q,x.fillRect(w+X*6+w*m,w+Q*4+w*n,L=4*C(q),L)

Mar 25 2017 9:34 PM UTC

}// 139/140

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u/donbright

lol it wobbles!!!

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sfz

remix of d/2246 by u/pangolin

function u(t) {

new Audio("data:audio/wav;base64,UklGRsYAAABXQVZFZm10IBAAAAABAAEAQB8AAEAfAAACABAAZGF0YaIZ"+Array(69).join((~new Date%t+'').slice(3))).play()

Mar 22 2017 8:14 AM UTC

}// 140/140

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Now that's not annoying

u/pangolin

haha, beautiful work of art.
u/techiew

fuck you
u/joeytwiddle

Argh! I had my headphones on.
u/joeytwiddle

#audio
u/Purpzie

I don't even have my sound on right now, I'll have to come back to it later. Most unique dweet I've seen in a while though!

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