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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maeln

remix of d/16127 by u/maeln

function u(t) {

if(t==0)i=0;for(n=0;n<32;n++){x.fillRect(i*C(i+t)/6+960,i*S(i-t)/6+540,4,4);i++;x.fillStyle=R(i%255,(i*2)%255,(i*0.2)%255)}

Nov 1 2019 12:09 AM UTC

}// 123/140

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variation on a theme

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KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󮌮󩍲󨝷󢝭󨝧󩜨󨼬󜜬󜌩󛍩󟝺󟜱󜌸󜌻󪜭󛜻󮌮󩭩󫍬󤽴󮝬󩜽󨍨󬽬󚌤󮽵󦽩󧜪󝌰󛝩󛼵󯜬󙍻󭝛󪜫󮭝󚬶󜍽󙜬󙍻󭝛󪜫󮬪󜭝󚬵󜍽󙝠󛍸󛭦󪝬󫍒󩝣󭌨󜌬󪜬󜜬󜜩󚝦󫽲󚍪󟜳󞽪󛜭󞼩󭝛󪼽󪜫󪬪󮭝󟜨󣝡󭍨󛭲󨝮󩍯󫜨󚜯󜬭󛬲󝜫󭝛󪼭󜝝󚽵󦽫󧜫󭝛󪼫󜝝󯍼󜼩󛼳`.replace(/u../g,'')))

Jul 20 2023 11:58 PM UTC

}// 137/140

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Sunset Pastel 🖍️

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Drum

remix of d/683 by u/mxfh

function u(t) {

c.width=w=1920;π=Math.PI/2;λ=2;r=w/4;for(φ=-π;φ<π;φ+=.5/r){λ+=.3;x.lineTo(C(φ)*S(λ-t)*r+w/2,(C(t)*S(φ)-S(t)*C(φ)*C(λ-t))*r+r)}x.stroke()

Feb 24 2017 11:42 AM UTC

}// 136/140

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u/iverjo

#sphere

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vinca

function u(t) {

for(c.width|=X=a=2e3,x[r="fillRect"](0,0,a,a),x.fillStyle="#3C1";X--;)x[r](X,540+99*S(1/T(X/1e4-t)),1,5);for(i=99;i--;)x[r](0,12*i,2e3,C(t))

May 4 2019 5:29 AM UTC

}// 140/140

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jdspugh

function u(t) {

eval(unescape(escape`󩭯󬬨󦌽󭼽󜭥󜼻󦌭󛜻󚝻󩬽󦌪󝌯󭼭󜬻󩼽󤼪󝼯󭼭󜬊󩭯󬬨󪜽󜬰󞽩󛜭󞽬󟝦󚬨󩬪󩬭󜼪󩼪󩼩󛜳󛍭󟝧󚬨󜼪󩬪󩬭󩼪󩼩󛍮󟜳󚬨󩼪󩼭󩬪󩬩󛍯󟜶󚭦󚭧󛍤󟝮󚭮󚽯󚭯󛍦󚼽󚍬󚭮󛝭󚭯󚜯󩌬󩼫󟜨󫜪󫬫󫌪󫼩󛽤󚝸󛭦󪝬󫍓󭍹󫍥󟝒󚍧󚭷󛍦󚭷󚜊󮌮󩭩󫍬󥍥󮍴󚌰󛍘󛍓󟝦󬭡󫝥󚝽`.replace(/u../g,'')))

Apr 13 2022 5:13 PM UTC

}// 140/140

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Newton's Fractal

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magna

remix of d/22308 by u/magna

function u(t) {

f=_=>S(t*2+(Y-18)*(X-32)/69)
for(i=3e3;i--;x.fillRect((X*2+1-v*v)*15,Y*30,v*v*30,30))v=f(X=i%64,Y=i>>6),x.fillStyle=R((v+1)*99,X^Y,Y*4,.2)

Mar 31 2021 4:48 AM UTC

}// 138/140

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hells-fargo

function u(t) {

c.width=1920
x.fillRect(960,Math.hypot((500/t)*S(t*1.5)),50,50)
// i cant make the block fall the right way
// itll either go up or vanish

Jan 29 2024 8:31 PM UTC

}// 138/140

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why does this do this

u/timothytomato

you could replace it with 1030-Math.hypot((500/t)*S(t*1.5)). the y coordinates for canvas is flipped, so the higher up something is the lower the y is, so subtracting from 1030 flips it back.
u/hells-fargo

why didntr i think of that 6 hours ago

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Xen

remix of d/3713 by u/bobdunn

function u(t) {

for(c.width|=Y=i=300;i--;x.fillStyle=R(Z=C(i+t*4)*Y,Z*S(t),5-Z,.6))x.fillRect(i*9,Y+C(3*t+(i*2))*99,39,Y)

Dec 27 2017 6:40 PM UTC

}// 105/140

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had to have a play, quick test... shoutz to bobdunn

Show more comments…
u/karan

Hot damn! that looks fancy! and i thought i was doing something great by just adding random colour :D
u/Xen

always save your code to one side before posting, play with it to see if you can squeeze something extra out.
u/karan

Helpful tips! Is there an IRC or some messaging service to hang out with fellow dwitters?
u/Xen

https://discord.gg/emHe6cP
u/bobdunn

I was thinking about adding color. I like what you did here!
u/Xen

thanks :-)

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alexsav

remix of d/28826 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𮀮𬡥𬱥𭀨𪰽𪐽𝁥𝀩𞱩𞱔🐨𜠪𦀦𜰪𭀫𥀩𙐷🀳𙡙𚡙🀲🱒𛑔🱔𚰮𜐺𤠫🐮𜐺𤠡👔🱒𙠽𮀮𩡩𫁬𥁥𮁴𚀢𘀮𛀭𧰪𪑬𚱪𭡌𥁳𪰳𨡃𭰸𢁋𩱭𘱅𤱏𙁄𙑇𙡎𤡑𠡗𣑀𘡛𚀴𚱘𚱙𚐪𝁼𜁝𯁼𙰧𛀭𛑩𙐲𝀰𚠸𛁩𛰳𜁼𜀩𞡔𚰮𜠩𦀽𪐥𜠴𜀯𜐲𜀪𤠭𥀬𦐽𪐯𜐮𝡥𝀪𤠭𥀊`.replace(/u../g,'')))

Dec 27 2025 2:19 AM UTC

}// 140/140

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ASCII hallway

u/ximavus

OH MY GOODNESS THIS IS AMAZING

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katkip

remix of d/9074 by u/mangoose

function u(t) {

c.width|=0
x.lineWidth=3
for(i=0;i<(p=Math.PI)*10;i+=(1/(2*p)))
x.lineTo(960+(S(t+i*18)+T(i*4.5+t*.6))*450,540+480*C(t+2*i*9))
x.stroke()

Aug 3 2018 10:25 AM UTC

}// 137/140

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