Top #symmetry dweets

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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katkip

function u(t) {

t||(x.translate(960,540))
z=(5*t|0) 
for(i=39;i--;)x.fillRect(z*19,-4,19,z/3+4),x.rotate(Math.PI/(z+1)/2)

Nov 12 2020 6:15 AM UTC

}// 105/140

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#symmetry increasing

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smtsjhr

function u(t) {

n=3+(0|t/3)%4;
for(c.width|=i=56-(n<5)*4;k=500+20*C(t*i/5)-t%1**i,i--;)x.lineTo(960+k*S(a=i*6.28/n),550-k*C(a));x.fill('evenodd')

Nov 14 2020 9:47 PM UTC

}// 129/140

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choose your fighter #symmetry

u/sigveseb

Nice effect

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ciaccodavide

remix of d/20392 by u/ciaccodavide

function u(t) {

P=16-~~(S(t)*9)
for(K=0;K<960/P;K++)x.fillStyle=R(g=66+96*Math.random()*.02*K,g*.7,g*2),
x.fillRect(K*P,0,1920-P*K*2,P)
x.drawImage(c,0,P)

Nov 9 2020 8:56 AM UTC

}// 138/140

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Procedural #symmetry Generation

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plusright

function u(t) {

c.width=999;w=40;a=16
for(i=0;i<a;i++){for(j=0;j<a;j++){s=i%2==0?-1:1
x.fillRect(-2*w+i*2*w+S(t)*w+C(t)*-s*w,-2*w+j*2*w+(C(t)*w*s),w,w)}}

Nov 15 2020 8:26 AM UTC

}// 137/140

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possibly #symmetry

u/plusright

gotta find a more succinct way of writing for loops, this one just feels a little too dull
u/yonatan

c.width=999 for(w=i=40;i--;)for(j=16;j--;)s=i%2==0?-1:1,x.fillRect(-2*w+i*2*w+S(t)*w+C(t)*-s*w,-2*w+j*2*w+(C(t)*w*s),w,w)
u/yonatan

actually, the fillRect can go into the for loop's final expression, between the ; and the ) to save 2 more chars
u/plusright

aha! that's clever, thanks.

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gpolonus

function u(t) {

f=(a,y)=>x.fillRect(a,y,9,9)||f
t||c.addEventListener('mousemove',e=>((a,y)=>f(a,y)(2e3-a,1e3-y)(a,1e3-y)(2e3-a,y))(e.x*3.4,e.y*3.4))

Mar 3 2020 7:17 PM UTC

}// 133/140

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Shorter 4 mouse cursors

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Xen

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑧𫁯𨡡𫁁𫁰𪁡🐮𜰬𬱣𨑬𩐨𛐡𩡩𫁬𤡥𨱴𚁍🐱𩐳𚱃𚁴𛰳𚐪𝐴𜀬𣠽𝐴𜀫𤰨𭀩𚠴𝀰𛁏🐹𞐬𣰩𛀡𭁲𨑮𬱬𨑴𩐨𮠽𨰮𭱩𩁴𪀬𜀩𚐬𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱏𚡴𯐬𞐰𙐬𜰰𙐩𨀬𬱴𬡯𪱥𤡥𨱴𚁍𛁎𛁏𛁏𚐬𩁲𨑷𢑭𨑧𩐨𨰬𜀬𜀬𮠬𜐰𞀰𛀭𝀬𛐴𛁺𚰹𛀱𜀸𞀩`.replace(/u../g,'')))

Nov 26 2020 6:11 PM UTC

}// 140/140

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Calm Xen #Xweet #symmetry

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New_Core

function u(t) {

for(w=c.width|=i=2;i--;x.fillText("SYMMETRY",a=w*S(t)-w,940+150*C(t*2.3),3060))x.font="30cm Arial",x.transform(-1,0,0,1,2e3-80+w*2*S(t),0,0)

Nov 9 2020 3:00 PM UTC

}// 140/140

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Reflection #symmetry

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ciaccodavide

remix of d/20621 by u/ciaccodavide

function u(t) {

z=t*t,w=960,h=540
t<13.37?(x.moveTo(w,h),x.lineTo(w+C(z|z)*2e3,h+S(z|z)*2e3),x.stroke()):(x.moveTo(w,h),x.arc(w,h,99,0,9),x.fill())

Nov 15 2020 9:47 PM UTC

}// 131/140

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B L A C K S U N #symmetry

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WasifBoomz

function u(t) {

a=Math.random()*1920
x.strokeStyle=R(t*14,t*8,t*25)
x.lineWidth=5
x.strokeRect(960 - a/2,Math.random()*1920,a,a/5)

Nov 10 2020 7:07 PM UTC

}// 115/140

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#symmetry

u/donbright

dig it

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ciaccodavide

remix of d/20534 by u/ciaccodavide

function u(t) {

for(var i=4e3;i--;f(960,480,300,t*i/2))f=(X,Y,s,r)=>s>9?f(1-X+s*S(r),Y+s*C(r),1*s/(2.8+S(t)),C(t+i)+r*2):x.fillRect(X,Y,t<6,1)

Nov 9 2020 12:34 PM UTC

}// 126/140

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Growing #symmetry

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