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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: #Food

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lerc

remix of d/22653 by u/Xor

function u(t) {

for(c.width=i=h=960;i-->0;){
n=C(i+t);q=S(i/152)
n>0?0:x.fillRect((i*h/2-i*i)**.5*S(i+t)+h/2,i,n*n*9*q,9*(q**.3))
}

Apr 30 2021 7:02 AM UTC

}// 115/140

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Did some tweaks for changing size of rects for maybe some 3d effect

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erin

remix of d/10794 by u/jylikangas

function u(t) {

for(c.width=i=v='-1';i++<7;v+=1)x[f='fillText'](`U`+v*.5,173-i*5,i*9),x[f](8,X=99-T(i*i+t/i)*99,345-X*2),x.fillRect(i*39,99+S(t+i)*9,39,1e3)

Apr 29 2021 7:21 AM UTC

}// 140/140

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i tried to make a waterpark but ended up just making the slide to lava in Hell.

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pavel

remix of d/22643 by u/Xor

function u(t) {

for(c.width|=i=11;i--;){
x.beginPath()
x.setLineDash([n=2**(i+t%1)])
x.lineWidth=n
x.lineTo(0,h=3*n/2)
x.lineTo(2e3,h)
x.stroke()
}

Apr 28 2021 7:59 PM UTC

}// 131/140

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Using setLineDash as otherwise its too slow to draw all the squares

u/Xor

Neat!

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Xor

function u(t) {

for(c.width=i=h=960;i-->0;)x.fillRect((i*h/2-i*i)**.5*S(i+t)+h/2,i,9,9)

Apr 28 2021 5:30 AM UTC

}// 71/140

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My Sphere

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Xor

function u(t) {

c.width=a=960;for(i=0;i<a;i+=5)x.fillRect(S(i+t)*i/2+a/2,i,9,9)

Apr 28 2021 4:55 AM UTC

}// 63/140

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Tree

u/Xor

Try incrementing by 4 or 6!
u/andrea270872

nice... for some reason 5.2 works also nicely :D

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taupelink

remix of d/22591 by u/taupelink

function u(t) {

for(i=k=q=120;--i;x.fillRect(3*i*X*C(Y),k*X*S(Y),9*q>>(1+t/3),q>>t))f=i*t,X=f*f%20,Y=X*f%2,x.fillStyle=R(q=X*q%T(k/q+Y)*i,q*=.7,q/2,2/q**.5)

Apr 24 2021 5:26 PM UTC

}// 140/140

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d/22626

u/taupelink

This dweet is abstract, but it's kind of a memorial to Sammy, our old ginger cat, who passed away this morning.
u/rep_movsd

It looks like wood

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lars-erik

remix of d/22616 by u/lars-erik

function u(t) {

c.width=w=110,f=Math.floor,o=f(t*20),b=120
c.style.filter=`blur(3px`
for(z=w;z--;)for(y=96;y--;)if(f((z+o)*y*2)%b==0)x.fillRect(z-1,y,3,3)

Apr 24 2021 1:37 PM UTC

}// 138/140

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I have no idea what I'm doing™ #4.4

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Agnes

function u(t) {

for(f=0,q=192;--q;)for(y=108;--y;x.fillRect(10*q,10*y,10,10))x.fillStyle='#'+(''+~~(q*y*t*f++)%(2**24)).padStart(6,'0')

Apr 23 2021 3:55 PM UTC

}// 119/140

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Rippling through colour space

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danny@hille.dk

remix of d/22595 by u/Toshiya-Marukubo

function u(t) {

for(i=l=1920;i-=30;)for(j=l;j-=30;x.fillRect(j,T(j)*i+560,T(k-t/9)*20,T(k-t/9)*20))k=i*l+j,x.fillStyle=`hsl(${k},99%,55%,.6`

Apr 23 2021 2:59 PM UTC

}// 124/140

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golf and play

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magna

function u(t) {

c.width|=0
for(j=4;j--;)for(i=9;i--;x.fillRect(400+i*100+S(t-j/30)*300,400,50,200))x.fillStyle=j?`hsl(${240*j+60},99%,50%`:'#000'

Apr 23 2021 3:46 AM UTC

}// 129/140

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#default color fringing

u/magna

j/60 looks better when fullscreen
u/Xen

nice!
u/andrea270872

I remember this...! :D My father would stand up and bang on the TV with his fist!
u/tomxor

Did the TV scream back "Please father, accept me for what I am!"