Dweets awesomed by u/aleamb

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

function u(t) {

c.width|=X=Y=Z=6;for(i=3e3;i--;)
X+=.1*(Y-X),
Y+=.01*(X*(29-Z)-Y),
Z+=.01*(X*Y-1.6*Z),
x.fillRect(960+X*30+Y*C(t*2)*10,1130-Z*22,6,9)

Feb 11 2019 12:26 AM UTC

}// 133/140

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Butterfly effect using Lorenz nonlinear equations with chaotic behavior. #Lorenz #attractor

u/katkip

#cute btw

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xem

function u(t) {

c.width^=0;x.font="300px arial";s=(t*500)%1080;z=(a,b,c)=>x.fillText(a,(~~(s/b))*b,c);z("15fps",32,300);z("30fps",16,675);z("60fps",8,1050)

Feb 10 2019 7:46 PM UTC

}// 139/140

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How fast are your eyes?

u/magna

Nice!
u/Galaxtone

(People who think you can only view 30fps): No you just cheated and made 60fps -> 30, 30 -> 15 and 15 ->
u/Galaxtone

7.5*
u/Galaxtone

and I'm like (Me): Why would anyone lie on the internet

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katkip

function u(t) {

c.width^=d=[];q=50*t|0;for(k=q;k--;)d.push((C(k*k)*3))
for(i in d.sort(g=(a,b)=>a-b))x.fillRect(1920/q*i,540+S(d[i]*d[i]+t)*300,2e3/q,999)

Feb 10 2019 3:10 PM UTC

}// 138/140

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Fluid sin, thx u/Undefined for golf help

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21medals

remix of d/12276 by u/21medals

function u(t) {

if(!t)for(d=[m=n=w=i=250];i--;)d[i]=i**9%999
for(c.width|=i=w;i--;)x.fillRect(i*8,0,8,d[i])
d[m]<(q=d[m+1])&&d.splice(m,2,q,d[m++])||(m=--n)

Feb 10 2019 3:06 PM UTC

}// 140/140

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Very slowly sorting 250 values using insertion #sort

u/katkip

#slow

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katkip

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞🐰𞱦🐨𦀬𦐬𬰬𮠽𬰯𚀴𚱃𚁴𚐩𚐽🡻𪑦𚁳🠲𚑸𛡦𪑬𫁒𩑣𭀨𦀭𬰯𜠬𦐭𬰯𜠬𬰬𬰩𛁦𚁘𛑳𛁙𛁺𚐬𩠨𦀬𦐭𬰬𮠩𛁦𚁘𛁙𚱳𛁺𚐬𩠨𦀫𬰬𦐬𮠩𛁦𚁘𚱳𛁙𚱳𛁺𚐬𩠨𦀭𬰬𦐫𬰬𮠩𛁦𚁘𛑳𛁙𛑳𛁺𚐬𩠨𦀫𬰬𦐭𬰬𮠩𯐻𩠨𞐶𜀬𝐴𜀬𜰰𜀩`.replace(/u../g,'')))

Feb 10 2019 1:47 PM UTC

}// 134/140

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#sierpinski carpet but #compressed

u/cantelope

You say "but" like compressed is a bad thing :P cool dweet!
u/luta

c.width^=0;f=(X,Y,s)=>{for(var i=9;i--;)s>2?i!=4?f(X+i%3*s-s,Y+(i/3|0)*s-s,s/(4+C(t))):x.fillRect(X-s/2,Y-s/2,s,s):0};f(960,540,300)

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katkip

function u(t) {

r=Math.random;for(k=900;k--;)i=r()*192|0,j=r()*108|0,x.fillStyle=R(r()*256,r()*256,r()*256),x.fillRect(10*i,10*j,10,10)

Feb 10 2019 11:30 AM UTC

}// 119/140

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#random randomness

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rodrigo.siqueira

function u(t) {

Xp=X=Y=t/800
x.globalAlpha=.1
for(i=2e3;i--;){
X=Xp*Xp-Y*Y+.9*Xp-.6013*Y
Y=2*Xp*Y+2*Xp+.5*Y
Xp=X
x.fillRect(1300+X*820,740+Y*400,2,2)
}

Feb 9 2019 3:14 PM UTC

}// 135/140

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Tinkerbell Map is a chaotic #attractor dynamical system, as described in https://en.wikipedia.org/wiki/Tinkerbell_map

u/rodrigo.siqueira

"Origin of the name: the graphical picture shows a similarity to the movement of Tinker Bell over Cinderella Castle, as shown at the beginning of Disney films."
u/katkip

You can replace Xp with p

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23_Skidoo

remix of d/12194 by u/23_Skidoo

function u(t) {

for(s=24,d=480,i=4e3;i--;f=C(X/d+t/2)/T(Y/d+s)+t,x.fillStyle=`hsla(${S(f/6)*d} 66%${40+S(f*6)*s}%`)x.fillRect(X=i%81*s,Y=~~(i/81)*s,s,s)

Feb 9 2019 5:58 AM UTC

}// 136/140

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username

remix of d/12252 by u/username

function u(t) {

with(x)for(shadowBlur=i=99;i--;shadowColor=fillStyle=`hsl(${i**(9-t%8)} 99%78%)`)fillRect(960+11*i*C(a=t*i/4),552+11*i*S(a),i,i)

Feb 8 2019 11:43 PM UTC

}// 128/140

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directions

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username

remix of d/12129 by u/rodrigo.siqueira

function u(t) {

X=Y=0
for(c.width|=i=1e3;i--;X=X*C(2*(t+Y))+Y/4,Y=C(2*X+Y+t/3)-S(i+X+t)/3)x.fillRect(1e3+X*742,521+Y*338,5,5)

Feb 8 2019 11:27 PM UTC

}// 109/140

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#golfed

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