Dweets awesomed by u/alien

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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Current theme challenge: #Food

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aemkei

remix of d/690 by u/xem

function u(t) {

x.font="12em arial"
~~(t*99)%4||x.fillText([..."😮😀😁😐😑😬"][new Date%6],800,700)

Dec 14 2017 9:06 PM UTC

}// 77/140

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Talking Face

u/cantelope

lol
u/Lazy1337

one tilde is enough

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alien

function u(t) {

W=c.width=384
f=frame
i=new Image();i.src="http://goo.gl/WY4qKH";
x.drawImage(i,f%6*W/6,0,W/6,64,0,0,W/6,64);

Dec 14 2017 5:26 PM UTC

}// 109/140

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New_Core

remix of d/3613 by u/New_Core

function u(t) {

for(c.width|=q=i=500;i--;x.fillRect((t*99-q*S(t)+i*S(b=i/.7958+S(t-i/q)))%2200-80,540+i*C(b),a=80-i/8,a))x.fillStyle=R(i*2,0,i,1-i/q)

Dec 12 2017 8:54 AM UTC

}// 133/140

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u/iverjo

Beautiful!
u/New_Core

#floppy

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alien

function u(t) {

t?1:(a=0,onkeydown=e=>a+=e.which-38)
W=c.width
x.fillRect((a+140*C(a)+W/2)%W,140*S(a)+W/4,20,20)
x.fillStyle=R(C(a+t)*255,S(t-a)*255,50)

Dec 12 2017 12:19 AM UTC

}// 136/140

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Yes it's a square, now focus the iframe and press key for a long time :D watch patterns converge.

u/Xen

well played sir :-)

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Xen

remix of d/3613 by u/New_Core

function u(t) {

for(x.fillRect(0,0,i=2e3,i);i--;x.fillStyle=R(i*b%99,0,i*t%255,C(i+t*3)/19))x.fillRect(960+i*S(b=i/.199+S(t+i/200)),540+i*C(b),a=29-i/b,a)

Dec 11 2017 11:38 PM UTC

}// 138/140

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u/donbright

awesome colors
u/iverjo

Beautiful
u/Xen

thanks
u/Qwitter

possibly a portrait of Nitrogen Narcosis ?

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cantelope

function u(t) {

for(w=i=c.width|=0,x.globalAlpha=.02;i--;)x.fillRect(w/2+S(p=(1.2566+S(t)/2e3)*i+C(t))*i/4-(s=Math.min(w/i*16,120))/2,540+C(p)*i/4-s/2,s,s)

Dec 10 2017 7:57 AM UTC

}// 139/140

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u/joeytwiddle

Tentacular!
u/kvagias

test on this
u/donbright

awesome
u/alien

WOW XD

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cantelope

function u(t) {

x.fillRect(0,0,w,w),P.map(v=>{v.p*=v.x<1?-2:.98,x.clearRect(v.x+=v.p--,v.y,20,9)})};{P=Array(w=2e3).fill``.map((v,i)=>v={x:i%w,y:i*9%w,p:0})

Nov 4 2017 6:12 AM UTC

}// 140/140

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Xen

function u(t) {

for(i=299;i--;)x.fillRect(i*9,499+(t*C(i/7)|(t/=-1))*9,9,9)

Nov 2 2017 11:08 PM UTC

}// 59/140

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NEW YORK HARBOR

u/alien

Wow what the !!!!!

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mmastrac

remix of d/3356 by u/mmastrac

function u(t) {

t?c.width|=0:M=[...Array(3e4)],M=M.map((e,i)=>[n=3,e][[1,w=212,++w,w+1].map(e=>n-=M[i+e]+M[i-e]),n]?!x.fillRect(i%w*9,i/w*9,7,7):!t&i%w)

Oct 24 2017 10:50 PM UTC

}// 136/140

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Last game of life, I swear...

u/alien

noooooo!! plez moooarrr GOL!!!
u/joeytwiddle

#gameoflife

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cantelope

function u(t) {

for(x.fillRect(0,0,i=(w=1e3)*2,i);--i;)x.clearRect(w+((i+S(i)*9/(Z=3+((i/60|0)*2+t*16)%65))%30-15)/Z*w,561+(3-S(i*4+t)*16/Z)/Z*w,s=w/Z/Z,s)

Oct 11 2017 3:13 AM UTC

}// 139/140

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u/magna

Snow!
u/alien

particle aceleration

dwitter.net | alien (2017)