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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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kipkat

function u(t) {

with(x)for(strokeStyle=R(c.width^=4),i=1;i++<11;stroke())beginPath(),arc(961,540,40*i,m=t+(0<(a=i*S(t)/1)||3)*a,1*t+6*a-m),lineWidth=i*i/8

Dec 16 2017 6:18 PM UTC

}// 138/140

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yokljo

function u(t) {

w=c.width|=0
n=40
k=n+S(t/n)*n
for(j=10*S(k)-1;j<n;j+=.01)for(i=0;i<10-j;i+=2)x.fillRect(n+w*S(k/(t+9)*j/i),540+C(k/50*j+i)*800,100,100)

Dec 10 2017 11:26 PM UTC

}// 136/140

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Not very exciting, basically just messed with my previous one until it looked like this...

u/donbright

thats pretty cool... like im inside some weird thing

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tsuhre

remix of d/676 by u/mxfh

function u(t) {

d=x.getImageData(0,0,w=c.width=256,h=144);for(i=0;i<h;i++)for(j=0;j<w;j++)d.data[(i*w+j)*4+3]=(S(t+i*j/8)+S(t/2))*120;x.putImageData(d,0,0)

Dec 4 2017 9:33 PM UTC

}// 139/140

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u/donbright

woah

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Xen

remix of d/3586 by u/tsuhre

function u(t) {

for(i=1e3;i--;x.fillRect(960+S(t)+S(t*i)*i,540+C(t)+C(t*i)*i,t*t%9+9,t*t%9+9))x.fillStyle=R(i*t*t%255,255/C(t*199/i),i%255,.1)

Dec 1 2017 11:36 PM UTC

}// 128/140

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u/tsuhre

This is Awesome! Great remix
u/Xen

Thank you
u/donbright

its cool how the alpha blending really makes a difference

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tsuhre

function u(t) {

x.fillStyle=R((S(t)+.5)*255,(S(t-2)+.5)*255,(S(t-4)+.5)*255,1)
x.fillRect(860+S(t*2)*300,440+C(t)*400,20,200)

Dec 1 2017 2:56 PM UTC

}// 109/140

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Xen

function u(t) {

for(i=2e3;i--;x.fillRect(960+i*C(i+t),500+i*S(i+t)/2,99,99))x.fillStyle=R(i*t*2%255,i*t/.66%255,i*t*3%255,t*29/i)
x.drawImage(c,S(t),C(t))

Nov 30 2017 10:37 PM UTC

}// 138/140

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Quick test to show my little sister how dwitter works

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Xen

function u(t) {

for(c.width|=Z=i=2e3;i--;x.rotate(C(i+t)/99))x.fillRect(0,i,Z,1),x.fillRect(i*2,0,1,Z)

Nov 26 2017 8:45 PM UTC

}// 86/140

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Unity-Aura

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veubeke

function u(t) {

i=t%6*60|0
c.width^=0
x.font='12em Arial',(i<240?i%20<17:i%60<51)&&x.fillText(['Badger `(°\\_/°)´','Mushroom ´´´(  )```'][+!(i<240)],90,590)

Nov 26 2017 8:38 PM UTC

}// 140/140

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u/_nderscore

🐍🐍oh its a snake

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parabola

function u(t) {

t*=99;i=~~(t/999)*9;j=t%999;r=i*i+j*j;a=k=0;for(;k<6.28;k+=.01)p=C(k)*i-S(k)*j,x.fillStyle=R(0,0,0,(p*p*r<99*r+99)*.01),x.fillRect(i,j,9,9)

Nov 23 2017 12:36 PM UTC

}// 139/140

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-> https://github.com/miloyip/light2d/blob/mast…

u/donbright

i let this run for a super long time and i loved it
u/parabola

@donbright sorry it's too slow, trying to improve it :P

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New_Core

remix of d/2106 by u/jczimm

function u(t) {

t?c.ondblclick=e=>x.fillStyle=R(b=a++%2*255,b,b):a=0
c.onclick=e=>x.fillRect((e.clientX*(f=.0282)|0)/16*1920,(e.clientY*f|0)/8*960,120,120)

Nov 22 2017 12:02 PM UTC

}// 139/140

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Doublecklick to change between black and white (erase)

u/iverjo

Nice, a full-blown application!
u/katkip

Is this minecraft?