Dweets awesomed by u/smtsjhr

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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erin

function u(t) {

c.style.filter="blur(5px)brightness(1)contrast(99)"
x.globalAlpha=.1
for(i=0;i<38;i++)
x.fillRect(i*50,460+T(t+i)*150+(i*t<<i)%99,40,40)

Jan 4 2021 11:04 PM UTC

}// 136/140

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virus v2

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rodrigo.siqueira

remix of d/17516 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(Y=i=-11;i<11;i=i+.005)
X=S(i/5-t+Y/9)+i,Y=15*S(i/6+Y/6-1),Z=S(i/2+t*2)*8,
x.clearRect(980+75*X,540+Z*8+Y*20,2,5)

Jan 4 2021 9:42 PM UTC

}// 140/140

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Bifurcation waves #bifurcation

u/Qwitter

quad map flaps

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tomxor

remix of d/21120 by u/tomxor

function u(t) {

for(c.width&=i=8320;i--;)
x.fillRect(X=i&127,Y=i>>7,1,Y/4-8>T(T(d=S(X/4)*S(Y/4+t*4)))&&.5+d/4)

Jan 4 2021 2:21 PM UTC

}// 94/140

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Shaded

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ciaccodavide

remix of d/20633 by u/ciaccodavide

function u(t) {

X=i=>S(t)*C(i)*135+n*280-468
Y=i=>520+S(i)*180
for(c.width|=n=9;n--;){x.moveTo(X(1),Y(1));for(i=1;i<8;i+=6.28/n)x.lineTo(X(i),Y(i))}x.fill()

Jan 4 2021 1:17 PM UTC

}// 140/140

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Polygon showcase untethered and filled

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Pascal

function u(t) {

eval(unescape(escape`𭀯🐲𞱦𫱲𚁣𛡷𪑤𭁨𯀽𪐽𜐲𜀻𪰽𛐭𪐪𚠮𜠻𚑸𛡤𬡡𭱉𫑡𩱥𚁤𫱣𭑭𩑮𭀮𩱥𭁅𫁥𫑥𫡴𬱂𮑔𨑧𣡡𫑥𚀢𨱡𫡶𨑳𘠩𦰨𪐥𝀩𧐬𜐶𜀪𚁩𙑫𚠷𚐫𞐹𚰵𜀪𤰨𛠰𜐪𪐪𭀩𛐴𜀰𛀨𭀫𚰥𪰪𝠰𜀩𚠱𛠸𛐲𜀰𛀳𜠰𛀱𞐲𚐻𮀮𩁲𨑷𢑭𨑧𩐨𨰬𜀬𜀬𜐹𜠰𛀲𩐳𚐠`.replace(/u../g,'')))

Jan 3 2021 8:06 PM UTC

}// 135/140

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well well well #fps #glitch

u/DataMeta

this is mad and I love it
u/tomxor

!! crazy, FF users: only works in chrome

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Pascal

function u(t) {

for(c.width|=a=1280;a--;c.style.filter="blur(4px)brightness(.65)contrast(99)")x.fillRect(1909-1.5*a,529-540*T(Math.atan(C(a+t/15))),22,22)

Jan 3 2021 7:18 PM UTC

}// 138/140

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jwc

function u(t) {

z=Math.random;if(!t)u[0]=u[1]=0;for(i=99;i--;B=u[1]++)X=z(),Y=z(),A=u[0]+=s=X*X+Y*Y<=1,x.fillRect(1e3*X,1e3*Y,g=2*s+2,g);throw("π≈"+4*A/B)

Jan 3 2021 7:27 AM UTC

}// 138/140

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Monte Carlo approximation of π

u/Xen

love it!
u/CalSch

What's with u[0] and u[1]?

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magna

function u(t) {

for(c.width=X=128;X--;)for(Y=72;Y--;)y=Y/3-12,y>T(T(S(X/3)*S(y+(t%2-1)*Math.PI)))&&x.fillRect(X,Y,1,1)

Jan 2 2021 10:06 PM UTC

}// 102/140

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https://twitter.com/ntsutae/status/134547762…

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ciaccodavide

remix of d/21078 by u/ciaccodavide

function u(t) {

T=(k=t)?'🐸🐊🐲🐉💣💥👻':T
for(i=640;z=--i**.3;--z)x.setTransform(s=20/z+C(t)*91,0,0,s,0,0),x.fillText(T.substr(~~k*2%14,2),i%z*99-C(t),t++%z*60)

Dec 30 2020 4:05 PM UTC

}// 138/140

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rodrigo.siqueira

remix of d/21067 by u/rodrigo.siqueira

function u(t) {

for(c.width|=i=q=r=s=1;i<400;x.lineTo(960+45*q+K,540+K*r+K*11+S(q+t*7)*25),i+=.1)r+=q*(K=58-s)/900,s+=q*r/4-s/30,q+=r-q/8;x.stroke()

Dec 26 2020 11:17 PM UTC

}// 132/140

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Melting Lorenz Attractor #lorenz

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