Dweets awesomed by u/rbong

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: #ScaryMovies

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rbong

function u(t) {

Y=c.height^=0
while(Y-=40){p=m=>S(Y+t+90*m)*250+250;[0,1,2,3].map(m=>{a=p(m),b=p(m+1%4),x.fillStyle=R(a,b,50);a<b&&x.fillRect(a,Y,b-a,40)})}

Oct 13 2018 8:48 PM UTC

}// 140/140

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Classic Twister Effect

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u/rbong

#classic #twister
u/BirdsTweetCodersDweet

Remix at d/10435
u/BirdsTweetCodersDweet

And another at d/10436, cause I couldn't help myself with the colors
u/Purpzie

Shortened by 10 characters: c.height|= p=m=>(S(Y+t+m*90)+1)*250;for(i=108;i--,Y=(0|i/4)*40;a<b&&x.fillRect(a,Y,b-a,40))x.fillStyle=R(a=p(m=i%4),50,b=p(m+1%4))
u/Purpzie

Oh woops it should be c.height|=p=m=>(S(Y+t+m*90)+1)*250;for(i=108;i--,Y=(0|i/4)*40;a<b&&x.fillRect(a,Y,b-a,40))x.fillStyle=R(a=p(m=i%4),50,b=p(m+1%4))
u/Purpzie

Okay dwitter hates me now, there should be a newline afterc.height|=
u/Purpzie

Honestly there should be an edit button for comments. Forgot to mention I changed the color but it has no effect on code length

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rodrigo.siqueira

function u(t) {

c.width^=0
for(y=-4;y<4;y+=.1){
for(X=-4;X<4;X+=.1){
x.fillRect(960+X*210*S(t*.6)+y*18,560-S(X*X+y*y)/(X*X+y*y)*240*S(4*t)+y*85*S(t),3,3)
}}

Oct 13 2018 8:44 PM UTC

}// 140/140

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3D Sombrero Equation

u/aleamb

cool!!

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rbong

function u(t) {

w=c.width^=0
for(X=w;X--;){x.fillStyle=`hsla(${X/100+t*50},99%,50%)`
x.fillRect(X,0,5,(3-S((X+t*999)*4/w)+C((X+t*55)*3/w))*200)
}

Oct 13 2018 5:47 PM UTC

}// 129/140

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Rainbow Wave

u/rbong

#rainbow #wave
u/joeytwiddle

I saw a sunset over the desert

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rbong

function u(t) {

for(Y=3;Y-=1/64;)
  for(X=3;X-=1/64;){for(r=i=0,c=10;r*r+i*i<=4&&c--;)_=r*r-i*i+X-2,i=r*i*2+Y-1,r=_;c&&x.fillRect(X*500,Y*500,8,8)}

Oct 13 2018 3:25 PM UTC

}// 132/140

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Very Slow Mandelbrot

u/rbong

#mandelbrot #fractal
u/rbong

I didn't see many other mandelbrots so I thought I'd do it. Sorry for the CPU hog!

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akx

function u(t) {

for(c.width|=0,y=0;1080>y;y+=5)for(i=0;10>i;i++)x.setTransform(1+(.002*y)**3,0,0,1,960+100*S(3*t-.015*y),y),x.fillRect(100*(i-4.75),0,50,5)

Oct 13 2018 1:38 PM UTC

}// 140/140

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laminar marimekko

u/qbob

oooohhhhh
u/katkip

nice
u/lionleaf

Amazing! #flow
u/joeytwiddle

wibbly wobbly #warping
u/Purpzie

Shortened by 10 characters: for(c.width=b=2e3;b--;x.fillRect(100*(b%10-4.75),0,50,5))x.setTransform(1+(.002*(y=(0|b/10)*5))**3,0,0,1,960+100*S(3*t-.015*y),y)

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arnioxux

function u(t) {

c.width|=0
x.font='900px arial'
i=Math.round(10*t/Math.PI)
x.fillText(
String.fromCodePoint(0x1F600+i%64),
500,
800-20*C(20*t)
)

Oct 13 2018 2:34 AM UTC

}// 128/140

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Smileys

u/f8f82804

#emoji

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rbong

function u(t) {

c.width^=0
i=999
A=B=D=1
while(i--){E=S(A*.5)-S(B)-C(D);F=S(A)-S(B*1.3)-C(D*t*10);D+=.1;A=E;B=F;x.fillRect(999+A*200,500+B*200,9,2)}

Oct 13 2018 2:22 AM UTC

}// 132/140

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Dynamical systems, son!

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jylikangas

function u(t) {

for(c.width=i=-9;++i<9;R=a=>x.lineTo(150+a*99/(z=j-t%1),z+90+(99+T(j+t&a+9|8)+a*a)/z))for(j=12;x.beginPath(x.stroke()),R(i),--j;R(i+1))R(i)

May 4 2018 7:27 PM UTC

}// 139/140

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Wireframe World

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u/iverjo

So good!
u/firegodjr

jylikangas at it again with the golden dweets :D #wireframe #perspective
u/aleamb

epic dweet!
u/jylikangas

http://jsriffs.blogspot.com/2018/05/making-o…
u/donbright

speechless
u/vain

can you hear the 80th retro synth music? :D Cool work

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donbright

remix of d/3697 by u/Citiral

function u(t) {

w=1920;for(c.width=i=w;i-=10;)for(j=w;j-=10;){
d=(i*i+S(3.14*(i/w))*j*j)/frame
o=d%9
x.fillRect(i,j,o,o)}

Jan 2 2018 3:15 AM UTC

}// 105/140

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u/joeytwiddle

I was about to comment "donbright would like this one" but then suddenly ... !
u/magna

Wow!
u/Xen

one of my new fav's, love this!

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