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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KilledByAPixel

remix of d/22894 by u/KilledByAPixel

function u(t) {

for(c.width=j=w=64,i=2e5;i--;)(j%w/32*T-T^t+w+T*j/2e3^T)%7?T+=.1:x.fillRect(j%w,j/w,9/T,T=1,++j)

May 30 2021 11:40 PM UTC

}// 96/140

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Sub 100 byte voxel raycasting!

u/tomxor

🤯 took a while to click: pixels and marching in a single for loop! + entire ray calculation inside the fractal (due to orthogonal camera rotation)
u/tomxor

-6 chars for(c.width=j=w=64;j<3e3;)(j%w/32*T-T^t+w+T*j/2e3^T)%7?T+=.1:x.fillRect(j%w,++j/w,9/T,T=1)
u/tomxor

#raymarching

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tomxor

remix of d/24387 by u/pavel

function u(t) {

for(i=128;i--;x.fillRect(704+X-s*4.5,Y+s*3.5,s,s))s=t?16:(X=i%4<<8,Y=i/4<<8,b=32),b&1?X+=b%4-2:Y+=b%4-1;b+=468199>>t*60%21&1

Nov 28 2021 6:23 PM UTC

}// 124/140

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Smolr Fastr Pen Pattern

Show more comments…
u/tomxor

... but less satisfying
u/cantelope

first time, ever, i've seen an improvement on any of pavel's designs :)
u/tomxor

True, Pavel's dweets are pretty tight. Usually the most I can hope for is -1 char :P
u/tomxor

d/24387 restored the slow draw, and removed the for loop for only +1 char
u/tomxor

Sorely missing an edit button: I mean d/24396
u/vain

amazing code and algo!

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danny@hille.dk

remix of d/13643 by u/magna

function u(t) {

c.width=w=2e2;with(x){for(q=255,i=25;i--;beginPath(fill(arc(S(t/9+i)*50+100,C(i+t/i)*50+50,10+S(i/3)*5,0,7))))fillStyle=R(200-C(t/i)*80);}

Jul 13 2020 2:28 PM UTC

}// 140/140

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Lavalamp?

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iverjo

function u(t) {

w=c.width=400;x.fillRect(0,115,w,2);for(i=9;i--;)x.setTransform(9,0,s=i/8|0-(i?0:1),1,1,1),x.fillRect(t%4*40-i*9+53*s,90,8,22)

Jul 22 2016 8:39 PM UTC

}// 126/140

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🚝

u/sigveseb

Trains!
u/iverjo

At least this one is consistent across platforms :P
u/iverjo

#train

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jonathan_b

remix of d/4718 by u/jonathan_b

function u(t) {

for(c.width|=s=490,i=0;i<s;i++)for(j=1;j<7;)r=j*9,x.fillStyle=R(i,j*30,i/C(i),2/j),x.fillRect(970+s*2*C(i)*C(t/j*++j+r*i),s+s*S(i*r),r,r)

Dec 29 2017 8:45 PM UTC

}// 137/140

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katkip

remix of d/12507 by u/katkip

function u(t) {

x.lineWidth=30;x.fillStyle='lime';if(t<6)x.fillRect(960-310+t*99+S(t)*99,540-75,60,150);x.strokeRect(960-325,540-75,650,150);

Feb 24 2019 9:01 AM UTC

}// 125/140

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u/joeytwiddle

#loading

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joeytwiddle

remix of d/4841 by u/joeytwiddle

function u(t) {

for(c.width=99,i=9;i--;x.fillRect(40-35*C(t/i),19-14*C(t-i),15,15))c.style.filter='blur(6vw)contrast(200)'

Feb 16 2020 9:55 AM UTC

}// 106/140

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Playing with New_Core's #metaballs

u/joeytwiddle

This draws from d/17584 and d/4841
u/joeytwiddle

d/26600 uses tan to great effect. Here: 19+14*T(t/2-i)

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New_Core

remix of d/22350 by u/contone

function u(t) {

t?a=~~(t*60):(x.font="1cm '",x.fillText("⛵︎⛱︎",0,30),d=x.getImageData(0,0,99,99).data)
d[a*4+3]>99&&x.fillText('☻',a%99*28,40*a>>7)

Apr 5 2021 3:52 PM UTC

}// 131/140

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384.cz

function u(t) {

c.style.filter="invert("+T(t)
c.width|=0
x.scale(45,45)
x.fillStyle=R(S(t*9)*99,S(t)**t,T(t)*t)
x.fillText((new Date+0).substr(16,9),0,15)

Jan 23 2024 5:53 PM UTC

}// 138/140

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#clock

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Xen

remix of d/19277 by u/neimad

function u(t) {

for(i=2e3;i--;x.fillRect(~x.setTransform(s=3e4/i,C(a=-i+t),9,s,t-9*s*C(a)+i,t+11*s*S(a))+5,S(t),4,.4))x.fillStyle="#"+i+"3"

Jun 29 2020 5:12 PM UTC

}// 123/140

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quick play