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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anotherkitten

function u(t) {

t||(a=b=0)
with(x)beginPath(),moveTo(a,b),arcTo(a,b=50*T(t),a=50*T(t**2),b,t%12*50),stroke(),rotate(4),drawImage(c,0,0);t%12<1&&(c.width|=0)

Sep 30 2018 1:11 AM UTC

}// 140/140

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spikes from the shadow realm

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Beakbonk

function u(t) {

c.width=1920;for(i=1;i<t*150;i++){a=i;while(a>1){if(a%2){a=3*a+1}else{a/=2};x.fillRect(3*i,3*a,3,3)}}

Sep 16 2023 9:43 PM UTC

}// 101/140

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Some "3x+1" magic

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username

remix of d/10578 by u/ersagun

function u(t) {

for(i=j=0,f=24;f--;i+=d("⚽Å⍈⋕⌔⌮⌰⋮⌅⌻⍉⌬⌚⌔⌴⌌⌵⌞⌹〈⌭⌤⌰⌦"),j+=d(
"⒭⍄⌹⍏⌤⍈⌉⌖〉⌢⌛⌡⌼⌡⌽⌉⌊⌱⌔⌡⌦⌦⌤〉"))d=a=>C(t*f)*(a.charCodeAt(f)-9e3)
x.fillRect(i,j,9,9)

Feb 1 2019 11:15 PM UTC

}// 140/140

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Pascal

remix of d/21116 by u/pavel

function u(t) {

for(c.width|=0,i=10600;i--;)i/500-10>T(T(S(i%40/6.5)*S(i/500+4*t))-1.57)*9&&x.fillRect(i%40*8,i/10,8,8);for(i=5;i--;)x.drawImage(c,i*320,0)

Jan 5 2021 6:58 PM UTC

}// 139/140

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this thing, but chess

u/tomxor

:P all of these are actually the same basic function, was that pure accident?
u/tomxor

Actually it's draughts not chess 😄
u/erin

checkers..?

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katkip

function u(t) {

eval(unescape(escape`𪑦𚀡𭀩𮱺👛𧐻𩡯𬠨𬠽𣑡𭁨𛡲𨑮𩁯𫐬𪐽𝠹𞱩𛐭𞰩𮠮𬁵𬱨𚁻𨐺𬠨𚐬𮀺𮐽𞐶𜀬𮐺𮑽𚑽𒡦𫱲𚁩𘁯𩠠𮠩𮀮𩡩𫁬𤡥𨱴𚁩𛡸𚰽𤰨𪐮𨐩𛁩𛡹𛐽𠰨𪐮𨐩𚰮𞀬𭠽𞐯𭀬𭠩𛁩𛡡𚰽𤰨𬠨𚐪𞐹𚐯𝠬𬐽𬠨𚐪𝠹𯀰𛁷👲𚀩𚠶𞑼𜀻𮡛𭱝𛡸👺𦱱𧐮𮀬𮡛𭱝𛡹👺𦱱𧐮𮐠`.replace(/uD./g,``)))

Jun 21 2020 2:28 PM UTC

}// 140/140

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#tree if(!t){z=[];for(r=Math.random,i=69;i--;)z.push({a:r(),x:y=960,y:y})} for(i of z)x.fillRect(i.x+=S(i.a),i.y-=C(i.a)+.8,v=9/t,v),i.a+=S(r()*99)/6,q=r()*69|0,w=r()*69|0;z[w].x=z[q].x,z[w].y=z[q].y

u/DataMeta

#organic

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jpthinker

function u(t) {

t=t*50|0
for(w=2e3,m=190,k=90,i=t;t<540&&i--;)
x.fillStyle=R(99,0,i/m*255),
x.fillRect((a=S(i/k*3))<0?-a*w:a*w,(i>>4)*k,k,t)

Aug 1 2025 1:17 PM UTC

}// 124/140

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Painting with wine and koolaid

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Lappi

remix of d/1605 by u/Lappi

function u(t) {

c.width=1920;x.font='9em a';
for(i=0;i<350;i++)
x.fillText('🌈',i*5,S(i*5+t*i/200)*400+600);

Feb 28 2017 7:43 PM UTC

}// 91/140

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farter

function u(t) {

l=t|0;for(i=1;i<l;i++)for(j=1;j<l;j++){u=Math.PI/l;k=l-i-j;k>0&&(
z=960/(1/T(u*i)+1/T(u*j)),r=48/l,x.fillRect(z-r,60+z/T(u*i)-r,r+r,r+r)
)}

Dec 7 2021 5:40 PM UTC

}// 139/140

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some math diagram about triangles with rational angles.

Show more comments…
u/farter

don't stare at it for too long cuz the amount of drawing grows quadratically.
u/farter

adjust viewport to get more complete view of its beauty~
u/farter

better performance & smoother graphic but can't golf.... t?n=t+2|0:l=0;if(l<n){l=n;for(i=l;--i;)for(j=l;--j;)u=Math.PI/l,k=n-i-j,k>0&&(z=960/(1/T(u*i)+1/T(u*j)),r=48/l,x.fillRect(z-r,60+z/T(u*i)-r,r+r,r+r))}
u/farter

this needs 3 secs wait. updated version at d/24464
u/farter

for really nonrepeating drawing, only draw when i,j,k are coprime.
u/joeytwiddle

l=60*t|0 can speed it up (but don't leave it running too long)

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Ghoust

function u(t) {

for(i=0;i<1920;i++){g=(S(Math.random()+t*2)/3+.4)*255
x.fillStyle=R(g,g,g,.1)
x.fillRect(i,0,1,9)}x.drawImage(c,0,9)

May 1 2022 2:49 PM UTC

}// 116/140

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u/andrea270872

"it's night, and you are driving, alone..." :) Very nice

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logomach

function u(t) {

c.width|=0;for(i=314;i--;)x.fillStyle=R(i/1.5,i/1.5,i/1.5),x.fillRect(960+600*C(t*.6+i*S(t+i/10)/100),540+400*S(t+i/10),10,10)

Jan 3 2018 8:26 AM UTC

}// 126/140

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