Dweets awesomed by u/artfarnaa

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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rodrigo.siqueira

remix of d/12356 by u/pavel

function u(t) {

c.width^=f=(X,Y,r,a,s,d=1)=>r>2&&x.lineTo(X,Y)|f(X+C(a-=s)*r,Y+S(a)*r,r-r/20,a,s,-d)|f(X,Y,r/3,t,s*d)
f(900,400,99,1,S(t/8)/4)|x.stroke()

Feb 15 2019 7:07 PM UTC

}// 137/140

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Moving plant #spiral

u/katkip

Nice

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pavel

remix of d/12355 by u/cantelope

function u(t) {

for(i=c.width|=h=355/226,w=960;Y=w-i--**h%w*2;x.fillRect(w+S(i+t)*w*r/z,540+Y/z,s=99/z/z,s))r=(Y*Y<8e5||Y%1)/S(i%h+h/2),z=4-S(t)-r*C(i+t)

Feb 14 2019 11:21 PM UTC

}// 137/140

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#uncompressed

Show more comments…
u/pavel

The base code draws a tube. 1/S(i%h+h/2) radius makes the tube have a square cross section.
u/pavel

(Y*Y<8e5||Y%1) randomizes the radius between 0 and 1 near top and bottom.
u/pavel

Err, between -1 and 1, and this makes the top and bottom panels.
u/cantelope

I see some gathering of points in the middle of the top and bottom panels, but other than that, a faithful reproduction. kudos!
u/pavel

I use polar coordinates, even though the radius is uniformly random that results in more dots near the middle :/
u/iverjo

#cube #d3

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pavel

function u(t) {

f=(X,Y,r,a,s,d=1)=>r>.2&&x.lineTo(X,Y)|f(X+C(a-=s/55)*r,Y+S(a)*r,r-r/15,a,s,-d)|f(X,Y,r/3,a+s*d,s*d)
t||f(-60,600,140,0,1)|x.stroke()

Feb 14 2019 10:05 PM UTC

}// 133/140

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Barnsley-like #fern #fractal

u/rep_movsd

#underrated

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katkip

function u(t) {

t||(a=b=5);for(i=999;i--;)a+=S(b+C(a)),b+=C(a+S(b*a+t)),x.fillRect(a*590-1800,b*290-300,3,3),x.globalAlpha=.1

Feb 14 2019 6:10 PM UTC

}// 109/140

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I just learnt what #attractor s are

u/katkip

Probably got liked so fast because people recognized the bifurcation diagram

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katkip

remix of d/12345 by u/katkip

function u(t) {

t||(a=b=1);for(i=999;i--;)a+=S(b+C(a*b-i*2)/2),b+=C(a+C(b-t)),x.fillRect(a*400+300,540+b*400,5,5),x.globalAlpha=.1

Feb 14 2019 5:21 PM UTC

}// 114/140

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3D shape doesn't feel so good... #d3 #attractor disintegration

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joeytwiddle

remix of d/577 by u/iverjo

function u(t) {

for(c.width|=i=99;i--;x.lineTo(1e3+r*S(p)**3,500-r/16*(13*C(p)-5*C(2*p)-2*C(3*p)-C(4*p)),15,15))p=i/16,r=400+99*S(3*t-p/9)**26,x.fill()

Feb 14 2019 1:35 PM UTC

}// 135/140

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u/katkip

Haha! From The Coding Train live
u/iverjo

#heart
u/Galaxtone

Nice job!
u/lionleaf

#valentines

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tomxor

function u(t) {

eval(unescape(escape`眽㤰Ⱪ㵬㵷⩷⼵ⱴ㴱⭴⩴⼱㈻景爨砮晩汬剥捴⠰ⰰⱣ⹷楤瑨㵷⨲ⱷ⨲⤻椭ⴻ砮晩汬剥捴⡘⨶ⱙ⨶ⰱ⭋ⰵ⤩堽椥眯㌬夽椯眬䘽琭椯氬䬽ㄭ䘥ㄬ䬪㴨奞堭繆⤯㈷┱⭋⨪㠬砮晩汬却祬攽恨獬⠤筩⨱㈰紬㤹┬⑻䬪㤹紥⥠`.replace(/u(..)/g,"$1%")))

Feb 14 2019 12:46 AM UTC

}// 140/140

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Trinitron #crt #scanline #fractal

u/tomxor

Finally resorted to UTF8. This is a reasonably accurate slow motion aperture grille scanline animation... Although if run very slow you will see it's not simulating 3 electron beams. t=fps (scanline) w=width (subpixels) the later must be a multiple of 3 and 5. Use X, Y and floored F to plugin your own fractal!
u/tomxor

Uncompressed: w=90,i=l=w*w/5,t=1+t*t/12; for(x.fillRect(0,0,c.width=w*2,w*2);i--;x.fillRect(X*6,Y*6,1+K,5)) X=i%w/3,Y=i/w|0,F=t-i/l,K=1-F%1,K*=(Y^X-~F)/27%1+K**8, x.fillStyle=hsl(${i*120},99%,${K*99}%)
u/sigveseb

Kick-ass!
u/C010011012

bypassing the character limit I see using unicode escapements and regex u r very clever

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anotherkitten

function u(t) {

x.fillStyle=R(a=16+S(t/5)*9,3,30-a,.03)
x.fillRect(0,0,2e3,2e3)
for(i=900;i--;x.clearRect(960+S(i)*(j%90)*20,540+C(i)*(j%90)*30,9,9))j=i+t*t

Feb 13 2019 11:20 PM UTC

}// 140/140

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some sexy spirals in this #waitforit

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pavel

function u(t) {

for(c.width|=i=20;i--;x.rect(-r,-r,2*r,2*r))r=(i-3*t%2)*60,r*=r>0,x.setTransform(1,0,0,1,960,540),x.rotate(S(r/500))
x.fill('evenodd')

Feb 12 2019 9:15 AM UTC

}// 134/140

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pavel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨𯀽𬐽𛠵𜠬𪠽𝰻𬠽𝰵𚡪𛐭𞰩𩡯𬠨𨱬𩑡𬡒𩑣𭀨𛠮𛡯👛𞐶𜀭𬠬𝐴𜀭𬠬𬠪🐲𛁲𧐩𛁣𫁩𬀨𬡥𨱴𚀮𛠮𫰩𚐬𪐽𜐲𞱩𛐭𞱦𪑬𫀨𨑲𨰨𞐶𜀬𝐴𜀬𬠬𨐽𭀪𚀸𛑪𚐯𜐶𚱩𚡱𛁡𚰽𬐯𜠩𚐩𨡥𩱩𫡐𨑴𪀨𚐬𫑯𭡥𥁯𚀹𝠰𛀵𝀰𚐻`.replace(/u../g,'')))

Feb 11 2019 9:04 PM UTC

}// 133/140

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➰ #beesandbombs

u/pavel

179 with(x)for(c.width|=q=.52,j=7;r=75*j--;)for(clearRect(...o=[960-r,540-r,r*=2,r]),clip(rect(...o)),i=12;i--;fill(arc(960,540,r,a=t*(8-j)/16+i*q,a+=q/2)))beginPath(),moveTo(960,540)
u/BuRRak

It shows 223/140 for me, Chrome 72.0.3626.96
u/pavel

This was compressed using d/11852
u/pavel

#compressed

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