Random dweets | Dwitter

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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Current theme challenge: #Food

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denzen

function u(t) {

with(a=60,x)fillText("🏰",0,12),fillStyle=R(...getImageData(X=t*a%16,Y=t&15,1,1).data.map((c,i)=>c&~(t*a%99))),fillRect(540+X*a,150+Y*a,a,a)

Jan 23 2020 6:02 PM UTC

}// 139/140

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glitched #castle

u/tomxor

Cute!
u/katkip

nice

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danr

remix of d/3697 by u/Citiral

function u(t) {

w=2e3;for(c.width=i=w;i>=0;i-=144)for(j=0;j<2e3;j+=10){i2=i-w/2;j2=j-540
d=Math.sqrt(i2*i2*i+j2*j2*j)/60
o=9+C(d-t*5)*5
x.fillRect(i,j,o,o)}

Dec 28 2017 3:00 AM UTC

}// 140/140

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katkip

remix of d/9222 by u/Xen

function u(t) {

x.drawImage(c,0,t),x.globalAlpha=.1
for(i=1e4;i--;x.fillRect(i*t,t,t,t),x.rotate(S(t)*13.378159290185924))x.fillStyle=`hsl(${i*t},101%,80%)`

Aug 12 2018 7:39 PM UTC

}// 140/140

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! ! ! REAL NATURAL WATTER DROPS RAINBOW GENERATOR & SIMULATOR ! ! !

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katkip

function u(t) {

t||(a=X=Y=0)
p=Math.PI/2
s=4
for(i=999;i--;)x.fillRect(999+(X+=S(a*p))*s,540+(Y+=C(a*p))*s,s,s),a+=(S(X)*C(Y)*5+4)^0

Jan 17 2020 5:11 PM UTC

}// 116/140

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just discovered a curve

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tomxor

remix of d/21339 by u/tomxor

function u(t) {

f=s=>S((d=9+Math.hypot(s*(X>>6)+X%64-32,Y%64-32))/3*(Y-256>>6))/d*16
for(c.width&=i=66048;i--;)x.fillRect(X=i&255,Y=i>>8,Z=C(f(6)+f(-6)),Z)

Jan 21 2021 8:02 PM UTC

}// 139/140

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#wikimedia #wavepanel #interference

u/tomxor

Reproduction of https://commons.wikimedia.org/wiki/File:Wave…
u/Qwitter

Awesome! looks just like wave tank pics

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andrea270872

remix of d/12953 by u/andrea270872

function u(t) {

c.width+=C(t)*2
for(j=1;j++<9;x.fillStyle='#02'+j)for(i=18;i--;){F=(S(i/2)*C(i/4+j+t))**.1;x.fillRect((i+j/8)*98,50*j-F*10,99,80*j+F*20)}

Apr 1 2019 6:57 PM UTC

}// 137/140

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Running in the maze (with more balanced "zoom")

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RwaterC

function u(t) {

m=40;z="𐃀𐇀𐇀𐏠🏠🻸𗻿𓎟𑿼𐵰𑮠𓿠𓿰𗳰𗁰𐀰";for(i=256;i--;){b=i&15;z.codePointAt(i>>3)>>15-b&1&&x.fillRect(b*m,(i>>4)*m,m,m)} //smaller

Jul 5 2026 12:02 PM UTC

}// 117/140

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pythech

remix of d/8651 by u/lionleaf

function u(t) {

c.width|=0
with(x)for(translate(900,500),i=7*t;~i--;fill())arc(5*i,!beginPath(fillStyle=`hsl(${i*9},99%,50%`),20*C(i*.9)+30,!rotate(3.88),9)

Jun 20 2018 3:48 PM UTC

}// 140/140

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Golfed back to the circles. Thanks to u/BalintCsala for the hsl trick

u/pythech

Rectangle version looks better anyway

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jylikangas

remix of d/7121 by u/jylikangas

function u(t) {

for(c.width=-1,Y=w=89;Y--;x[f](Y*9+w*S(t)-w,0,9,60+S(Y^w)*20))x[f='fillRect'](w-S(v=Y/w+t)*Y,w+799/Y,v*w&8?2e3/Y:x.fillStyle=R(Y*3,0,w),w/Y)

Oct 8 2018 8:29 PM UTC

}// 140/140

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OutRun: Neon City edition

Show more comments…
u/BalintCsala

#retro
u/katkip

#d3
u/f8f82804

#outrun
u/iverjo

Inspiring!
u/iverjo

#neon
u/donbright

!!!!!!!!
u/lionleaf

Incredible! #city #track #train
u/alien

wow
u/magna

Musical edition: https://dweetplayer.net/demo/v1/*/10287@190/…
u/rodrigo.siqueira

Similar to Atari's Enduro game with city skyline

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baon

remix of d/27541 by u/New_Core

function u(t) {

for(c.width|=i=5;i--;)x.arc(960,540,50*(S(t*5+i/2)+i+1.5),0,7)
x.fill`evenodd`

Feb 2 2024 5:21 PM UTC

}// 78/140

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just an illusion