Top dweets 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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BriSeven

remix of d/18159 by u/rep_movsd

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<200;i++)
x.fillRect(i*10,!(i&(C(i)*t))*10+500,10,15) // draw 50x200 rects

Apr 7 2020 3:36 AM UTC

}// 116/140

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pseudorandom pulse signal

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BriSeven

function u(t) {

c.width*=1
for(i=-1,v=t*8;i<2;i++)x.setTransform(10*C(t)*i,10*S(t),-S(t)*10,10*C(t)*i,950+i*50+C(v)*50*i,500+S(v)*50*i),x.fillText('🤚',0,0);

Apr 4 2020 3:26 PM UTC

}// 140/140

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Wash yo hands.

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BriSeven

remix of d/17920 by u/BriSeven

function u(t) {

s=255,S=64;d=5e2/S
for(i=0;i<S;i++)for(j=0;j<S;j++)c=C(i/d/2)*C(j/d+C(j/5+t)),x.fillStyle=R(b=-(c*S+6)*s,-b,-b),x.fillRect(i*d,j*d,d,d)

Mar 13 2020 1:33 AM UTC

}// 135/140

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lava lamp behind the scenes.

u/BriSeven

from here you can modify i*d and j*d to make whatever bulb shape you want.

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BriSeven

remix of d/17886 by u/kurishutofu

function u(t) {

c.width+=0;x.font='1cm a';x.save();x.scale(9,9);x.translate(109,60);x.rotate(t*13+C(t*6)*2);x.fillText('📀',-19,13);x.restore()

Mar 10 2020 12:06 PM UTC

}// 126/140

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disc read error

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BriSeven

remix of d/17788 by u/BriSeven

function u(t) {

for(i=r=X=9e2,Y=5e2,W=(H=1e3)*4;i;i--)x.fillStyle=`hsla(${i/20+10},${i/20+20}%,50%,0.1)`,x.fillRect(X+=3*S(r+=C(Y*t*r)),Y+=3*C(r),5,5)

Feb 28 2020 3:42 AM UTC

}// 134/140

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Sharehouse shower drain

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BriSeven

remix of d/584 by u/BriSeven

function u(t) {

for(i=r=X=Y=5e2,W=(H=1e3)*4;i;i--)x.fillStyle=`hsl(${r*5},99%,50%)`,x.fillRect(X+=S(r+=S((t+X)*r)),Y+=C(r),5,5),X=((X%W)+W)%W,Y=((Y%H)+H)%H

Feb 28 2020 3:33 AM UTC

}// 139/140

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Pile of silly string

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BriSeven

remix of d/17773 by u/veubeke

function u(t) {

c.width^=0
with(x)for(lineWidth=1,i=400;i--;stroke())beginPath(),setLineDash([3.14*i]),lineDashOffset=t*500*(1-i%2*2),arc(960,540,i*1,0,7)

Feb 28 2020 2:01 AM UTC

}// 138/140

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Amazing what a couple parameter changes can do with this one!

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BriSeven

remix of d/17695 by u/pavel

function u(t) {

with(x){for(beginPath(t||scale(9,9)),fillText('STONKS',160,99),i=2;i--;lineTo(6*j,11+j*j+11*S(4*j)))j=~~t+i;rect(1,-1,222,111);stroke()}

Feb 28 2020 12:30 AM UTC

}// 136/140

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OH NO, I'M RUINED

u/pavel

Hah, yeah! This is more accurate right now.

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BriSeven

remix of d/578 by u/New_Core

function u(t) {

if(t<13)d=0.5,m=127,x.fillStyle=R(C(t*d)*m+m,S(t*d-d)*m+m,S(-t*d-d)*m+m),x.fillRect(t*150,0,4,2e3);else x.drawImage(c,a=C(t),0,1920,1050)

Jan 3 2017 1:21 AM UTC

}// 137/140

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hsl has harsh linear transitions. i've swapped in smooth gliding sinewave transitions

Show more comments…
u/iverjo

Smooth indeed
u/iverjo

127 characters: m=127;t<13?(x.fillStyle=R(C(t/2)*m+m,S(t/2-.5)*m+m,S(-t/2-.5)*m+m),x.fillRect(t*150,0,4,2e3)):x.drawImage(c,a=C(t),0,1920,1050)
u/iverjo

125 characters: m=127;t<13?(x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m),x.fillRect(t*150,0,4,2e3)):x.drawImage(c,a=C(t),0,1920,1050)
u/iverjo

123 characters: m=127;x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m);t<13?x.fillRect(t*150,0,4,2e3):x.drawImage(c,a=C(t),0,1920,1050)
u/New_Core

121 I guess as a= is not needed anymore ;)
u/iverjo

121 characters: m=127;x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m);t<13?x.fillRect(t*150,0,4,2e3):x.drawImage(c,C(t),0,1920,1050)
u/BriSeven

119 with a compromise on the constant m=127;x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m);t<15?x.fillRect(t*m,0,4,2e3):x.drawImage(c,C(t),0,1920,1050)
u/New_Core

114 if we skip the prepaint wait. m=127;x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m);x.fillRect(t*m,0,4,2e3);x.drawImage(c,C(t),0,1920,1050)
u/New_Core

and last number should be like 1060 for a bit more distortion
u/iverjo

For some extra swaying movement, replace C(t) with 2*C(t)

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BriSeven

remix of d/524 by u/BriSeven

function u(t) {

x.globalAlpha=0.1;for(i=0;i<16;i++)x.fillStyle="#"+(i*t*20>>>0).toString(16),x.fillRect(i*160+S(t)*300-300,C(t/10)*500+500,161,160)

Dec 20 2016 10:43 PM UTC

}// 131/140

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add sweep and moar motion blur!!

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