Dweets awesomed by u/Xen

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.

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Jezza

function u(t) {

t||(X=Y=0);x.globalAlpha=.1;for(i=500;i--;)X+=S(Y),Y+=C(X),x.fillRect(X*60,Y*60,1,1);X=++X%33;Y=++Y%19

Mar 14 2019 2:55 AM UTC

}// 102/140

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X+=S(Y);Y+=C(X)

u/Xen

#waitforit
u/DataMeta

I really dig this

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katkip

function u(t) {

for(i=999;i--;)r=Math.random()*t*3,x.fillRect(
959+S(r/3+S(r/9+S(r+t)/399)*r*2)*960,
539+S(r/2+C(r/5-C(r+t)/399)*r*2)*540,
2,2);

Mar 13 2019 12:34 PM UTC

}// 128/140

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#waitforit #abstract ink can't escape

u/Ath0r

cool!

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tomxor

function u(t) {

b='0Jĉ߄߀῰㿸㾸翼翼㯸㯸ᷰ࿠΀'
c.width=320;for(i=t<2?256:1024;i--;)
b.charCodeAt(Y=i>>4&15)>>(X=i&15)&1&&
x.fillRect(X+(i>>8<<4),Y+82,1,1)

Mar 12 2019 1:39 AM UTC

}// 128/140

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Oops #atari #retro

u/tomxor

0x010 Illegal Instruction
u/tomxor

#bitmap #sprite
u/tomxor

#pixelart

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Ath0r

function u(t) {

c.width|=0
for(i=w=1920;i--;)x.fillRect(i,540+300*S(i*0.0065),2,2)
a=t*9
b=w/a
for(i=0;i<a;i++)x.fillRect(i*b,540,b,300*S((i+0.5)*b*0.0065))

Mar 11 2019 5:31 PM UTC

}// 140/140

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Sine integration #sine #integration #maths

u/Jezza

∫sin(x) from 0 to 2π = 0 :) :) :)

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Xen

function u(t) {

x.arc(1e3+S(t/.8)*99,500+C(t)*99,50,0,Z=t*99%1e3)
x.fillStyle=R(Z%255,Z%149,Z%99)
x.drawImage(c,C(t*9)*Z/5,S(t*9)*Z/9)
x.beginPath(x.fill())

Mar 11 2019 3:38 PM UTC

}// 140/140

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u/artfarnaa

Cool.

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LimeLaser

function u(t) {

r=Math.random
p=t?p.map(([u,v,i,j]=[100*r()+910,100*r()+490,0,0])=>[u+i/4,v+j/4,i+2*r()-1,j+2*r()-1,x.fillRect(u,v,1,1)]):[...Array(9999)]

Mar 9 2019 7:37 AM UTC

}// 138/140

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Pupil Dilation (or Pandora's Box)

u/Xen

love it!
u/tomxor

Scary !
u/joeytwiddle

#virus

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aoneill01

function u(t) {

f=g=>390*g(t/3.1)+130*g(t*4.72)
h=i=>128+64*S(i*t)
x.fillStyle=R(h(1.3),h(1.5),255)
x.beginPath()
x.arc(960+f(C),540+f(S),20,0,6.3)
x.fill()

Mar 9 2019 12:44 AM UTC

}// 140/140

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rnbw

function u(t) {

c.width=700
x.fillStyle=`#d94`
for(i=-4;i++<53;)for(j=(i+S(t/3+i/3)*10-30);j++<13;)x.fillRect(i*30-30+S(t/3+j)*50,j*30,40,16)

Mar 8 2019 7:29 PM UTC

}// 125/140

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odd... stripes? can i CALL them that??

u/Xen

nicely done
u/katkip

So smooth! :D

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danny@hille.dk

function u(t) {

eval(unescape(escape`景爨挮睩摴桼㵹㵰㴴〰Ɽ㵓⡴⤬愽搫瀻礭ⴻ⥦潲⡫㵹⽡ⱬ㵫⩤⭰⩃⡫⭤⤬椽㐻椭ⴻ焼儦☨攽㈪⡑⵱⤬砮晩汬却祬攽刨椥㈦♥ⰰⱩ┲㼰㩥⤬砮晩汬剥捴⡱⭬⭰ⰳ⩹ⱑ⵱ⰵ⤩⥱㵓⡤⬱⸵⩩⤪瀬儽匨搫⡩⬱⤥㐪ㄮ㔩⩰`.replace(/u(..)/g,"$1%")))

Mar 8 2019 6:59 PM UTC

}// 140/140

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almost happy with this :-/

u/Xen

looks good
u/pavel

It looks like you rediscovered something like d/1278. Very cool effect.
u/danny@hille.dk

Actually his code is way more elegant than mine:-) I had no intentions of copycatting :-(
u/joeytwiddle

#twister

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Xen

function u(t) {

for(c.width=800,i=199;i--;x.rotate(C(i*S(t/i*9))/i))x.rect(0,0,i*4,i*3);x.fill(`evenodd`)

Mar 8 2019 4:53 PM UTC

}// 89/140

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u/katkip

Pretty #massive

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