Random dweets | Dwitter

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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vgel

remix of d/24039 by u/vgel

function u(t) {

p=t?p:[]
for(c.width|=i=0;i<4e4;)x.fillRect(n=p[++i]??=i%3e2*9,m=p[++i]??=i/9,5,5,q=99,d=S(n/q)+S(m/q+C(t)),p[i-1]-=d*C(n/q),p[i]-=d*C(m/q))

Oct 7 2021 11:38 PM UTC

}// 140/140

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pumping chord

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andrea270872

function u(t) {

I=t*3320%2e3;J=t*94%1e3
i=A=I/2e3;B=J/1e3
for(;i++<13;[A,B]=[A*A-B*B+.3,2*A*B],C=A*A+B*B)
x.fillStyle=R(C*200,0,0,.3)
x.fillRect(I,J,i*=4,i)

Mar 7 2019 8:26 PM UTC

}// 140/140

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Ghost of Julia ver5 (in red)

u/f8f82804

#fractal
u/13thptr

weird rendering:I love it :)
u/andrea270872

thanks... I had to cut a lot of corners to even get something looking like that :D
u/13thptr

#scanline
u/Xen

love it!

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Xen

remix of d/14875 by u/Blacklink

function u(t) {

for(c.height|=i=345,x.lineWidth=k=3.14,p=S(t)-k;i--;x.stroke())x.beginPath(q=k*2/p*(i%p)),x.arc(960,540,i*k,q,q+k*3/p)

Oct 25 2020 2:47 PM UTC

}// 118/140

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play and golf

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retera

remix of d/4299 by u/retera

function u(t) {

c.width=1920;for(k=0;k<t;k+=0.01){d=Math.abs(k%2-1);for(r=0;r<6.282;r+=0.19){l=(480+t*30);x.fillRect(960+C(r+k)*l*d,540+S(r+k)*l*d*d,8,8)}}

Dec 28 2017 6:07 AM UTC

}// 139/140

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serj

remix of d/6778 by u/DirtyDan

function u(t) {

c.width+=0
for(i=8;i>0;i--)x.beginPath(),x.ellipse(960,540,(1+C(t*i))*(b=270/7*i),(1+S(t*i))*b,0,0,44/7),x.fillStyle=R(i%2*255),x.fill()

Feb 7 2018 9:04 PM UTC

}// 136/140

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cantelope

remix of d/36266 by u/Arn

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪁼🐰𛁩🐶𩐴𞱩𛐭𞰩𨐽𪐥𜰲𜀯𜰰𛐵𛠲𝐬𨠽𚁩𛰳𜠰𯀰𚐯𜰰𛐳𛁤🐶𛰨𛠰𜐫𚁓𚁡𚡡𛑢𚡢𛑴𚠱𝠩𚡓𚀲𚡡𚡢𚐭𤰨𝰪𨐩𚡓𚀷𚡢𚐩𚠪𜠩𛁸𛡦𪑬𫁓𭁹𫁥👒𚁤𚠲𛁤𛰲𚐬𮀮𩡩𫁬𤡥𨱴𚁩𙐳𜠰𚠶𛁩𛰳𜠰𚠶𛐵𛀶𛀷𚐻`.replace(/u../g,'')))

Sep 9 2026 10:26 PM UTC

}// 128/140

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mixy mixy

u/rodrigo.siqueira

Uncompressed to 140 chars: for(i=6e4;i--;x.fillRect(i%320*6,i/54,6,7))a=i%320/31-5,b=i/9e3-3,d=12/(.01+(S(a*a-b*b-t*9)*S(2*a*b)-S(7*a)*S(7*b))**2),x.fillStyle=R(d,d/4)
u/cantelope

with some aesthetic compromizes ;) [speed, visible non-op row at top, etc]

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shilquix

remix of d/25360 by u/shilquix

function u(t) {

F=m=>Math.abs(~~((X/Y)*t*1e3))
w=1920,h=1080,r=16
for(i=0;i<w;i+=r)for(o=0;o<h;o+=r)X=i-w/2,Y=o-h/2,x.fillStyle='#'+F(),x.fillRect(i,o,r,r);

Apr 23 2022 6:51 PM UTC

}// 140/140

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u/donbright

really interesting, as you let it run the various sections really do different things.

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KilledByAPixel

remix of d/14546 by u/KilledByAPixel

function u(t) {

with(x)for(c.width|=i=299;i--;restore(fillText("𝗦𝗣𝗢𝗧",9,800)))save(),clip(p=new Path2D(font="52em'"),p.arc((9*i+t*i)%2e3,S(i*i)*800,49,0,7))

Jun 12 2019 5:50 AM UTC

}// 140/140

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Spot

u/katkip

Awesomened!
u/jylikangas

These are clever and fresh! Well done!

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intrinsic

remix of d/20935 by u/rodrigo.siqueira

function u(t) {

for(ⵠ=1e4,ഽ=(β,α,γ,ට)=>γ>1?ഽ(α+γ*S(ට),β+γ*C(ට),γ/3,T(ට/11)*23):x.fillRect(β+960,α+540,γ,γ);ⵠ--;)ഽ(0,0,360,ⵠ+t)

Dec 15 2020 8:24 PM UTC

}// 110/140

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7 bytes less #golf

u/pavel

Shaving off 8 more for(f=(X,Y,r,a)=>r>1?f(Y+r*S(a),X+r*C(a),r/3,T(a/11)*23):x.fillRect(X,Y,r,r);t<1e4;)f(960,540,360,++t)
u/intrinsic

Awesome!
u/Xen

for(f=(X,Y,r,a)=>r>1?f(Y+r*S(a),X+r*C(a),r/3,T(a/9)*23):x.fillRect(X,Y,r,r);t<1e4;)f(960,540,360,++t)

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snail

function u(t) {

x.transform(f=540,0,0,f,(c.width=1920)/2,f)
for(i=t,n=24;n--;i+=.6+n*0.01)x.lineTo(C(i), C(i*4/3))
x.fillStyle='red';x.fill("evenodd")

Dec 26 2017 10:58 PM UTC

}// 134/140

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