Dweets awesomed by u/DataMeta

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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pavel

function u(t) {

for(c.width|=p=710/339,x.scale(i=9,9);i--;x.arc(107+q*C(a=i%2*3+~~T*p),60+q*S(a),60-q,a-=p,a))T=t++/2%3,q=T%1*60
x.stroke()

Feb 7 2019 8:08 PM UTC

}// 123/140

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u/katkip

Nice!

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rnbw

function u(t) {

for(c.width^=i=0;i++<45;)for(j=-6;j++<23;x.fillStyle='#ac6'+(4+(i+j)%2*2))x.fillRect((i*(b=99+C(t)*35))+(a=S(t)*600%b)-500,(j*b)+a,d=b*.9,d)

Feb 7 2019 3:57 PM UTC

}// 140/140

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zooming tiles without transform! doesn't perform very well, though

u/rnbw

(i'm surprised that that hastily-made alpha adjustment worked...)

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ds0

function u(t) {

r=c.width*=1
for(i=9;i--;){Q=4*t+i
x.beginPath()
x.ellipse(r*(i+1)/10,540+300*S(Q),90,Math.abs(90*C(Q)),0,0,6.3)
C(Q)>0?x.fill():x.stroke()}

Feb 7 2019 3:32 PM UTC

}// 140/140

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New_Core

function u(t) {

for(i=840;i--;)x.fillStyle=`hsl(${(i*S(S(t)*S(t*2+i*.157))*C(i/520)+i*9)/(.05*C(t)+1)},99%,50%`,x.fillRect(i%40*50,~~(i/40)*50,50,50)

Feb 6 2019 12:46 PM UTC

}// 133/140

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katkip

remix of d/12197 by u/katkip

function u(t) {

c.width*=1
for(i=9;i--;)for(j=50;j--;)for(k=20;k--;)x.fillRect(400+i*100+S(t*5)*300+j+S(k+t)*S(t*5)*99,400+C(j+i*22)*S(t*5)*29+k*10,2,15)

Feb 6 2019 9:07 AM UTC

}// 137/140

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#default but shuttered

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23_Skidoo

remix of d/12192 by u/23_Skidoo

function u(t) {

for(s=24,t/=48,d=360,i=4e3;i--;f=C(X/d+t*8)*S(Y/d)+t,x.fillStyle=`hsla(${S(f/2)*d},66%,${40+S(f*f*99)*s}%`)x.fillRect(X=i%81*s,Y=i/81*s,s,s)

Feb 6 2019 5:53 AM UTC

}// 140/140

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u/katkip

Nice pattern
u/joeytwiddle

#colors

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ds0

remix of d/12186 by u/ds0

function u(t) {

c.width|=r=540
for(i=r;i--;){Y=r-(2*i)
W=(2*(r**2-Y**2)**.45)
x.fillStyle=R(255*S(t+111*i))
x.fillRect(960-(W/2)+.8*r*S(t+111*i),540-Y,W,3)}

Feb 6 2019 3:00 AM UTC

}// 140/140

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Red Visitor

u/katkip

??
u/Galaxtone

He keeps swapping

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joeytwiddle

function u(t) {

c.width|=0;for(i=9;i--;)x.save(),x.translate(115+280*i,400+80*i-9*i*i),x.scale(20,20),x.rotate(S(t-i/5)/4),x.fillText('🏮',-6,6),x.restore()

Feb 5 2019 5:57 PM UTC

}// 139/140

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u/lionleaf

Lunar New Year!
u/joeytwiddle

Curious. Chrome only keeps the resolution now, when the text is horizontal.

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Xen

remix of d/12172 by u/robbyg

function u(t) {

for(Z=99,i=9;i--;)for(v=200;v--;x.fillRect(520+S(t+v/Z)*400+i*Z,v*5,Z*v/Z,5))x.fillStyle=`hsla(${i*Z+v+t*Z},50%,50%,.1`

Feb 5 2019 4:45 PM UTC

}// 119/140

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u/katkip

#color

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robbyg

remix of d/12170 by u/robbyg

function u(t) {

c.width|=0
for(i=9;i--;)for(v=200;v--;)x.fillStyle=`hsl(${i*40+v+t*40},50%,50%`,x.fillRect(520+S(t+v/50)*400+i*100,440+v,50*v/150,1)

Feb 5 2019 3:47 PM UTC

}// 132/140

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Rainbow weaving perspective #default that is hopefully not derivative. :D

u/DataMeta

Smoooth
u/DataMeta

#colors

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