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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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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New_Core

function u(t) {

with(x)for(w=i=2e3,font="30cm'",fillText("🐒",300,900);i--;fillRect(0,i,w,1))fillStyle=`hsla(${a=i/9-t*30},99%,${b=25*S(t-i/50)+50}%,.8)`

Aug 19 2025 4:23 PM UTC

}// 139/140

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rodrigo.siqueira

remix of d/34194 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=1e4;i--;x.fillRect(960+X/Z,170+Y/Z,.1,1))r=i/2000+t*3,X=r*S(r+.5)*200,Y=r*C(r)*99+r*r*9,Z=r*(i/t)%.1+6+C(X&Y)

Aug 16 2025 1:24 PM UTC

}// 140/140

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Volumetric spiral generator #spiral

u/Axioplase

Oranginaaaa!
u/cantelope

wow

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jpthinker

remix of d/34195 by u/jpthinker

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟜰󒭸󛭢󩝧󪝮󤍡󭍨󚌩󒭦󫽲󚍰󟝛󜌬󜜬󜬬󜼬󜌬󝌬󝜬󝬬󝼬󝌬󝜬󜜬󜬬󝬬󝼬󜽝󛍩󟜱󝬻󪜭󛜻󦬽󚌨󩌾󟬲󚜫󜜩󚬳󛍸󛭬󪝮󩝔󫼨󚌨󚍤󟬾󜜦󜜩󚬭󜬫󜜩󚽓󚍴󚜩󛽚󛼳󚬲󩜳󚼹󝬰󛌨󚍤󚼱󟬾󜜦󜜩󚬭󜬫󜜩󛽚󛼳󚬱󩜳󚼵󝌰󚜩󩌽󬍛󪝝󒭸󛭳󭍲󫽫󩜨󚜻`.replace(/u../g,'')))

Aug 12 2025 12:44 AM UTC

}// 134/140

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It’s alive: Wireframe box moves

u/jpthinker

I got it moving. Demonstrates the #d3 #perspective better
u/cantelope

looks good 👍

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neimad

remix of d/34178 by u/Axioplase

function u(t) {

eval(unescape(escape`挮睩摴栽眽㉥㌻猽㠮㔬欽㤹ഊ景爨椽〻椼眻椫㵳⥦潲⡪㴰㭪㰱〸〻樫㵳⥸⹦楬汓瑹汥㵠桳氨⑻樦楽ⰹ㤥ⰵ〥怬砮晩汬剥捴⡩ⱪⱳ⩓⠹⩃⡴⤫椯欩⭳⩓⡪⽫⤬猪匨㤪匨琩⬨椫権⽫⤫猪䌨㈪琫⡪⵩⤯欩⤠`.replace(/u([^D].)/g,'$1%')))

Aug 8 2025 6:42 AM UTC

}// 138/140

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rodrigo.siqueira

remix of d/34155 by u/jpthinker

function u(t) {

for(k=i=1472;i--;x.fillRect(i%128*15+8*C(i*t)/t/t,(i>>6)*5+99/t,15,99/t**2-50))x.fillStyle=`hsl(${i/9+t*30},${S(i/t**4)*99}%,${C(i*i)*40}%`

Jul 28 2025 2:19 PM UTC

}// 139/140

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Shimmering gradient reflection

u/jpthinker

WOW! I can't believe my simple gradient rainbow turned into THIS. I am honored. I will study this well. Thank you Rodrigo

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pacificgirls

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪌽󞜹󞽣󛭳󭍹󫍥󛭦󪝬󭍥󬬽󘭩󫭶󩝲󭌨󘬻󮌮󩭯󫭴󟜢󞝰󮌠󫝯󫭯󬽰󨝣󩜢󞽦󫽲󚍩󟜲󞽩󛜭󞽸󛭬󟝸󛭬󪝮󩝔󫼩󮌮󩭩󫍬󥍥󮍴󚍛󘭜󭝃󝭃󜼠󘌠󘍄󥽟󥍔󡝟󘬬󘭟󧽟󧽟󘍐󛍃󛍆󘭝󦽩󧜬󜜶󛍩󟼳󝬺󜬷󚜻󮌮󫌨󜬰󛌱󞌬󮌮󫌨󜼰󛌱󞌬󮌮󫝯󭭥󥍯󚌳󜌬󜼸󚜩󚜬󮌮󬽴󬭯󪽥󚌩`.replace(/u../g,'')))

Jul 23 2025 8:11 AM UTC

}// 140/140

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Hangman

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rodrigo.siqueira

remix of d/26610 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=1e4;i--;f(0,0,240,t))f=(X,Y,s,r)=>s>8?f(Y+s*S(K=r*i),X,s/2,r/.4):x.fillRect(X*2.7+940,Y*3+540,.2,t<5)

Jul 20 2025 7:40 PM UTC

}// 132/140

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Single line doodle

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zachygreen

remix of d/33461 by u/zachygreen

function u(t) {

eval(unescape(escape`󪜽󭌪󝬰󒭮󟜱󒭶󟜨󪬬󬜩󟜾󚍪󙝱󚽱󚜥󬜊󫌽󪬽󟭶󚍩󛌳󚬪󪬩󛼳󚬪󚍪󛜱󚝼󜌊󩭯󬬨󮬽󜌻󮬼󝜻󮬫󚼩󮽨󟜲󚭺󒭮󚼽󫌨󪌩󛝬󚍨󚼱󚜊󫬪󟜱󛜲󚬨󭬨󪜬󜼪󚬨󪌫󜬩󚜯󜼪󚭨󙬱󚝽󒭮󚬽󜜮󜌴󝼊󫜽󭌿󫜫󞜪󠼨󫬩󞬰󒭫󟝴󟽫󛜹󚭓󚍮󚜺󜜰󝼰󒭸󛭬󪝮󩝔󫼨󫜬󪼩󒭸󛭳󭍲󫽫󩜨󚜻`.replace(/u../g,'')))

Jul 2 2025 10:07 PM UTC

}// 139/140

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did this one again with better alignment because old one set pi/3 to 1.05 this one sets it to 1.047

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Xen

remix of d/34050 by u/Xen

function u(t) {

for(i=3e3;i--;x.fillRect(i,t*99,.1,z/t))for(z=j=9;--j;z-=F(Y=S(t/j)*j/9-S(z+j),X=i/23/j)+Y*F(0)/5)F=k=>S(Y)*9+C(X/t)-S(X)*t

Jun 26 2025 7:33 PM UTC

}// 123/140

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Gothic wood

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Xen

remix of d/34048 by u/DazeWare

function u(t) {

for(i=3e3;i--;x.fillRect(i,t*99,.01,z*t))for(z=j=9;--j;z-=F(Y=S(t/j)*j/9-S(z+j),X=i/23/j)+Y*F(0)/5)F=k=>S(Y)*9+C(X/t)-S(X)*t

Jun 26 2025 7:28 PM UTC

}// 124/140

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pure doom