Dweets awesomed by u/bschwb

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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fujimotos

function u(t) {

for(c.width=i=640;i--;){
z=Math.max(Math.min(-t+i/5,0),-1)
x.setTransform(C(z),-S(z),S(z),C(z),400+40*i+-200*t,250)
x.fillRect(0,0,-25,-80)}

Mar 22 2018 1:57 PM UTC

}// 140/140

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u/lionleaf

https://youtu.be/9hPIobthvHg?t=206
u/fujimotos

Maybe we can add coloring to domino tiles. It'd be a lot cooler.
u/jylikangas

for(c.width=i=250;i--;x.fillStyle=R(i%3*99))x.fillRect(0,0,6,-49,h=(H=i/9-t)<0&&H,x.setTransform(K=C(z=h>-1?h:-1),-S(z),S(z),K,99*(H+2),99))
u/jylikangas

Needs a bit more golfing to get different colors
u/BirdsTweetCodersDweet

d/7466 and d/7467 for some interesting phenomena
u/joeytwiddle

#dominoes
u/micahcowan

#default
u/katkip

#infinite

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BalintCsala

function u(t) {

for(c.width=500,i=t|0;i--;)[[X=250,(Y=150)+(K=(t-1-i)*9)],[X-i*9,Y],[X,Y-K],[X+i*9,Y],[X,Y+K]].map(y=>x.lineTo(...y))
x.stroke();

Mar 21 2018 10:06 PM UTC

}// 129/140

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u/diceroll123

I used to draw these all the time in grade school. 👌
u/joeytwiddle

I think the first graphics I ever drew was something like that
u/13thptr

#astroid

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xem

remix of d/7401 by u/xem

function u(t) {

c.width=innerWidth;c.onmousemove=e=>B.push([e.x-X,e.y-Y,X=e.x,Y=e.y])
B.map(i=>x.fillText("⚫",i[2]+=i[0],i[3]+=i[1]))};{B=[X=Y=0]

Mar 21 2018 9:11 PM UTC

}// 129/140

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u/yonatan

c.width=innerWidth is a great idea
u/xem

Move mouse to throw projectiles :)
u/xem

(c.width=innerWidth makes it work in fullscreen and not-fullscreen. Thanks to Balint Csala for the trick)
u/joeytwiddle

#interactive

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jkjustjoshing

remix of d/7270 by u/New_Core

function u(t) {

i=1920;
j=Math.abs
for(;i--;)x.fillStyle=R(255,(t*600-i/3)%999,255),x.fillRect(i,500+100*j(T(i/599))*S(j(i/90)),1,40)

Mar 21 2018 1:07 AM UTC

}// 117/140

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u/AnielaMW

x.fillStyle=R((t*600-i*2)%999,255,255),
u/AnielaMW

x.fillStyle=R((t*600-i/9)%999,255,255),
u/AnielaMW

Here is green, but no black background...
u/AnielaMW

x.fillStyle=R((t*600-i/9)%999,255,(t*600-i/9)%999),
u/AnielaMW

i=1920;j=Math.abs;for(;i--;)a=(t*600-i/9)%999,x.fillStyle=R(a,255,a), x.fillRect(i,500+100*j(T(i/599))*S(j(i/90)),1,40)
u/AnielaMW

still trying to get the black background
u/joeytwiddle

This is wrong but perhaps you can fix it: i=1920;j=Math.abs;for(;i--;)a=(t*600-i/9|0)%999,x.fillStyle=R(0,a,0),x.fillRect(i,a?500+100*j(T(i/599))*S(j(i/90)):0,1,a?40:999)

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yonatan

remix of d/7384 by u/nystrand

function u(t) {

c.width=200;for(i=2e3;j=i--/2e3;x.fillRect(i/9*C(t)+S(i)*r,S(3*j)*75+C(i)*r,6,6))r=j>.9?2:30*S(3*j+.3),x.fillStyle=R(a=r*(7-S(i*2)**8),a*.8)

Mar 20 2018 11:44 PM UTC

}// 140/140

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175 char version: https://codegolf.tk/a/265

u/joeytwiddle

#banana

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New_Core

function u(t) {

for(c.width|=i=50;i--;x.fillRect(400*S(b=t+i/99),400*C(b*2),99,99))x.setTransform(-S(a=t+i),C(a),C(a),-S(a),960,540),x.fillStyle=R(200,i*3)

Mar 20 2018 6:03 PM UTC

}// 139/140

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u/aleamb

nice!

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Batrachus

function u(t) {

c.width*=a=1
for(i=32;i--;)for(j=0;j<18;x[f](d+10*S(b=Math.PI/2*~~(a=S(a*99)*2+2)),e+10*C(b),g,g))x[f="fillRect"](d=i*60,e=j++*60,g=50,g)

Mar 20 2018 4:51 PM UTC

}// 137/140

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u/Xen

very nice
u/taupelink

#maze

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nystrand

remix of d/7333 by u/Batrachus

function u(t) {

with(x)for(i=d=c.width=200;j=i--/d;fillStyle=R(d+i,d/j,arc(99+(i-79)*S(T(t)),S(3*j+S(t*7)/4)*75,j>.9?5:30*S(3*j+.3),0,7),fill()))beginPath()

Mar 19 2018 6:13 PM UTC

}// 140/140

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Remix of original and inspired by d/7372 by u/joeytwiddle

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u/yonatan

that's a damn fine banana!
u/sigveseb

Rockin'!
u/magna

WOOOOT!
u/joeytwiddle

very nice :D
u/aleamb

Dayyyy o! daaaay o! Come, Mister Tally Man, tally me bananaaaaa
u/Renaud___

wow :)
u/CtrlAltCuteness

That 'with' statement does have use here. Just hope it never conflicts with other needed functions.
u/joeytwiddle

#banana
u/vain

Great! How do you guys get the algos for such amazing fake 3d bananas? :)

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jylikangas

function u(t) {

for(X=c.width=450;X--;x[f](X%50*5+t%23*9,0,3,X))x[f='fillRect'](X-X%5*25,99+S(X*5)*5-(h=9*S(X%64/16))+(X>>6)*25%50,1,h*2)&x[f](X*2,50+h,9,1)

Mar 17 2018 8:47 AM UTC

}// 140/140

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Scanimation Fish

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u/Lynext

Genius!
u/magna

If some technique exists, there's a dweet version of it.
u/sigveseb

this is so impressive :)
u/sigveseb

https://www.youtube.com/watch?v=LCIsIfEOEI8 some more inspiration for other dweets perhaps!
u/iverjo

#fish
u/aleamb

#scanimation
u/pythech

blew my brains out
u/rep_movsd

#illusion
u/rep_movsd

#underrated
u/vain

this blow me away! How...? O.o

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New_Core

function u(t) {

x[q='fillStyle']='#0001'
x[f='fillRect'](0,0,a=2e3,a)
for(i=a;i--;x[f](a*S(i*a)*s,a*C(i)*s,s*9,s*9))s=30/((i+t*9)%a),x[q]=`hsl(${i},99%,50%`

Mar 16 2018 7:12 PM UTC

}// 140/140

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inspired from yonatan's way to code ... but I had to cut out alot...

u/New_Core

x[q='fillStyle']='#0001' x[f='fillRect'](0,0,a=2e3,a) for(i=a;i-=4;x[f](a*S(i*99)*s+955,a*C(i)*s+535,s*9,s*9))s=99/((i+t*99)%a-a),x[q]=hsl(${i},99%,50%

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