Dweets awesomed by u/BriSeven

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: #Opposites

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iverjo

remix of d/89 by u/iverjo

function u(t) {

c.width=2e3;for(i=5e3;i--;)p=3*t+S(t/8)*i/3e3+i%4/2,d=C(p)-S(p),d>0&&x.fillRect(960+199*S(p)+249*S(t/.7+i/6e3),i/4-2,299*d,1/(d+1))

Jan 14 2017 4:31 PM UTC

}// 131/140

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iverjo

remix of d/50 by u/iverjo

function u(t) {

k=260;c.width=2e3;for(i=9;i++<5*k;)p=t+i/k+i%8*5,s=3/(10-p%9),x.beginPath(),x.arc(79*T(p*S(t/9)+1)+i%8*k,550*s,49*s*S(i/k),i,i+7),x.stroke()

Jan 14 2017 4:28 PM UTC

}// 140/140

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u/hamptonio

Its like a C.elegans dance party.
u/CliffJonesJr

Leeches!!!

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ose

function u(t) {

for(i=0;i<20;i++){
x.fillStyle=R(S(i*t)*255,S(i+1+t)*255,S(i+2+t)*255);
x.fillRect(i*150+100*S(t),(t*50),50,150);
}

Jan 14 2017 4:08 PM UTC

}// 115/140

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Psychedelic sneks

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lionleaf

remix of d/592 by u/New_Core

function u(t) {

c.width=2e3;a=99*S(t)+300;;for(b=i=500;i--;)x.strokeStyle='red',X=1e3+a*S(i)*S(i*0.5+.3*T(t))-b*C(t*.5),Y=b+a*C(i),x.lineTo(X,Y);x.stroke();

Jan 13 2017 8:33 PM UTC

}// 140/140

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Hot air baloon caught in a tornado!

u/lionleaf

#balloon

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New_Core

remix of d/590 by u/New_Core

function u(t) {

c.width=2e3;a=200*S(t)+300;for(b=i=500;i--;)X=1e3+a*S(i)*S(i*0.5-t)-b*C(t*.5),Y=b+a*C(i),x.lineTo(X,Y);x.stroke();

Jan 13 2017 11:57 AM UTC

}// 114/140

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u/sigveseb

now add shadows :D

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New_Core

remix of d/590 by u/New_Core

function u(t) {

c.width=2e3;a=200*S(t)+300;for(b=i=500;i--;)x.fillRect(1e3+a*S(i)*S(i*b)-b*C(t),b+a*C(i-t)*C(i*2),5,5)

Jan 13 2017 8:48 AM UTC

}// 102/140

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New_Core

function u(t) {

c.width=2e3;a=200*S(t)+300;for(b=i=500;i--;)x.fillRect(1e3+a*S(i)*S(i*.0065-t)-b*C(t),b+a*C(i),5,5)

Jan 13 2017 8:37 AM UTC

}// 99/140

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lionleaf

remix of d/587 by u/BriSeven

function u(t) {

N=80;c.width=2e3;for(j=N;j;j--)for(i=N;i;)x.fillRect(980+S(j/N*8)*150+T(i/N*4)*99,
540+C(j/N*8)*150+C(t+i--/N*4)*300,5,5)

Jan 12 2017 9:07 PM UTC

}// 121/140

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A golfed remix which should leave some more room to play around with :)

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BriSeven

function u(t) {

N=50;P=44/7;c.width=1920;for(j=0;j<N;j++)for(i=0;i<N;i++)
x.fillRect(980+S(j/N*P*2)*150+S(i/N*P)*300,
540+C(j/N*P*2)*150+C(t+i/N*P)*300,5,5)

Jan 6 2017 7:37 AM UTC

}// 140/140

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u/iverjo

Cool, a torus!
u/donbright

NICE
u/Purpzie

Shortened by 5 characters: for(c.width|=a=0,N=50,P=44/7;a<N*N;)x.fillRect(980+S((j=0|a++/50)/N*P*2)*150+S((i=a%50)/N*P)*300,540+C(j/N*P*2)*150+C(t+i/N*P)*300,5,5)
u/Cloud

#tor

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BriSeven

remix of d/585 by u/BriSeven

function u(t) {

m=140;x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m,.004);x.fillRect(99+t%13*m,0,4,2e3);x.drawImage(c,6*C(t*3),0,1920,1078)

Jan 5 2017 1:36 AM UTC

}// 129/140

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spoke too soon. you can push this even further

u/BriSeven

turn the opacity of the fill up to .5 to see some mad
u/iverjo

trippy ^^

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