Dweets awesomed by u/robbyg

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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Lynx

function u(t) {

for(i=0;i<100;x.fillStyle=R(127,++i*2,i)){y=540+0.5*7.5*t*t*(i%2?-1:1);x.fillRect(i*7.5*t,y,20,20)
x.fillRect(1920-i*7.5*t,y,20,20)}

Dec 4 2020 2:38 PM UTC

}// 132/140

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fun with physics formulas (newbie to dwitter)

u/joeytwiddle

When you pop into the supermarket because you need two eggs

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danny@hille.dk

remix of d/20882 by u/pavel

function u(t) {

with(x)for(beginPath(fill()),fillStyle=(T=!T)?'#fff2':R(),i=686;a=i--/99;arc(960,540,399+99*f(t|0),a,a))f=n=>T?n:n&&S(n&n*t)*S(a*n)/n+f(n-1)

Dec 4 2020 2:15 PM UTC

}// 140/140

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quick play

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rodrigo.siqueira

remix of d/20902 by u/taupelink

function u(t) {

for(i=996;i--;x.fillRect(250*X,250*Y,2e3,1))X=t/2,Y=i/230,h=300*S(Y%S(m=X/2%S(p=C(q=Y*S(X/3))*2)*2+T(i*i**t)/6)),x.fillStyle=R(h*p,h*m,h*q)

Dec 4 2020 5:29 AM UTC

}// 139/140

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Noisy signal

u/taupelink

whoa
u/magna

WOWZA!
u/SMON

haha...not sure why - I guess aliasing - but it sparkles when I scroll :D

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taupelink

remix of d/20654 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,h=k*S(Y%S(m=X/6%S(p=C(q=Y*S(X/3))*2)*2)),x.fillStyle=R(h*p,h*m,h*q)

Dec 2 2020 4:43 AM UTC

}// 140/140

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d/20902

u/pavel

You can save 7 chars by doing f=i*t,X=f*f%9,Y=X*f%5 in these instead of Math.random. It seems random enough.
u/taupelink

Oh cool, thank you!! I like the way it changes the animation at the beginning too.

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pavel

function u(t) {

for(i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+130*C(a=Math.PI/4+(p+p/4&1||-1)*(369/13*d+3*t)),240+p%4*200+130*S(a),d,d))d=i%120/9,p=i/120|0

Dec 1 2020 8:51 PM UTC

}// 140/140

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#beesandbombs demake https://twitter.com/beesandbombs/status/1327…

u/rep_movsd

If you stare a bit, you see white lines completing the circles - an optical illusion
u/danny@hille.dk

save 9 bytes for(i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+130*C(a=.8+(p+p/4&1||-1)*(28.4*d+3*t)),240+p%4*200+130*S(a),d,d))p=i/120|0,d=i%120/9
u/danny@hille.dk

120/9 = 40/3
u/danny@hille.dk

129 bytes -> for(m=120,i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+m*C(a=.8+(p+p/4&1||-1)*(28.4*d+3*t)),240+p%4*200+m*S(a),d,d))d=i%m/9,p=i/m|0

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pavel

remix of d/20879 by u/pavel

function u(t) {

p=n=>60*n+(37*n-20)*Math.asin(S(16*t/n))
x.fillStyle=`hsl(${180*t},50%,50%`
x.beginPath(x.fill(x.arc(p(16),p(9),40,0,7)))

Dec 1 2020 12:34 AM UTC

}// 121/140

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#waitforit

u/Xen

love it!

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geb

remix of d/20798 by u/geb

function u(t) {

for(i=3e3,c.width|=f=g=>t+99*((g(i)-3)+g(i+t))*g(V=i/19+t);i--;)x.arc(960+f(C),540+f(S),19,0,5-S(V-t));x.stroke(),c.style='filter:invert('

Nov 24 2020 4:54 PM UTC

}// 138/140

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u/magna

WOW
u/aadil

wowww

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Germain

function u(t) {

c.width=1980
for(var a=4;a<45;a++){
x.font=a*9+"px a"
x.fillText(a==44?"🐸":"🟢",700-C(t*3+a/5)*150,120+(a*a*2.3)/5)}

Nov 22 2020 12:48 PM UTC

}// 115/140

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#emoji

u/ciaccodavide

SnakeFrog!
u/danny@hille.dk

So I made some minor tweeks - now I'll never sleep again: for(c.width|=a=45;--a;)x.font=450-a*9+"px a",x.fillText(a==1?"🤡":"🍩",800-C(t*3+a/4)*155,800+(a**1.72*S(t)))
u/danny@hille.dk

Shave off 5 chars: for(c.width|=a=45;a--;x.fillText(!a?"🤡":"🍩",800-C(t*3+a/4)*155,800+a**1.72*S(t)))x.font=450-a*9+"px a"
u/Germain

Yuck ! :D

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pavel

function u(t) {

for(c.width|=i=8;--i;)for(w=j=3<<i-1;j--;x.fillRect(-!x.rotate(6.283/w*(j+i/(1+5**(4+i-t%3*5)))),-25*i,2,25))x.setTransform(3,0,0,3,960,540)

Nov 11 2020 8:56 PM UTC

}// 140/140

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#beesandbombs

u/pavel

https://twitter.com/beesandbombs/status/1326…
u/pavel

#symmetry
u/donbright

nnnnnnice

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pavel

remix of d/15161 by u/KilledByAPixel

function u(t) {

for(c.width|=j=9;j--;x.fill())for(x.beginPath(i=6);i--;x.arc(960+r*C(b=.785*(2*j-o)-t),540+r*S(b),120,a=i/.96-o*2*t,a))o=j>4,r=o?223:j&&315

Nov 10 2020 11:11 PM UTC

}// 139/140

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#uncompressed #symmetry

u/Xen

nice!
u/donbright

how.....

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