Dwitter - javascript demos in 140 characters

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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BriSeven

remix of d/33625 by u/BriSeven

function u(t) {

eval(unescape(escape`吽晲慭攊䌽吥㔊刽启㕼《䄽䌪㈫㐊楦⠡琩愽《楦⠡䌩愽愾㸱ੌ㵍慴栮牡湤潭⠩⨲㰼㍼愾㹁ⴳ☷੖㴳㈰㠵㸾䰦ㄊ愽愦縨ㄼ㱁⥼嘼㱁੸⹦楬汒散琨ㄹ㈰ⵒ┲㔵⨹Ⱘ㔭䌩⨹⬨刯㈵㕼〩⨵㐬㤪嘬㤩`.replace(/u([^D].)/g,'$1%')))

Apr 23 2025 8:46 AM UTC

}// 133/140

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Kufic-esque Redux

u/BriSeven

Brought it down from 177 to 164 characters by switching the memory from an array to an int, and using bit shifting instead. Got rid of a lot of array operations by making my lookup index into 3 consecutive bits on the int. I saved enough bytes to be able to rearrange the offsets to fill the screen.
u/BriSeven

The dark underline on the previous go was a bug, a nice one. but unfortunately I ended up fixing it.
u/BriSeven

Oh, but you can recreate the bug by changing A=C*2+4 to A=C*2+2`
u/BriSeven

146.. so close! a=t?a:0 T=255 for(C=5;C--;x.fillRect(T*8-t*60%T*8,(5-C)*8+(t*60/T|0)*60,8*V,8))C||(a>>=1),A=C*2+2,V=32085>>(a*t&1<<3|a>>A-3&7)&1,a=a&~(1<<A)|V<<A;
u/warbino

@u/BriSeven 👍

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rodrigo.siqueira

remix of d/33637 by u/rodrigo.siqueira

function u(t) {

for(i=2e4;i--;x.fillRect(960+Y/Z,X/Z+590,.1,t<3))r=S(i/2/t),X=r*C(k=i/1.4/t)*940,Y=r*S(k)*940,Z=r*S(k/2)/1.5+r**S(i)*2.4

Apr 23 2025 3:01 PM UTC

}// 120/140

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3x7 double circle symmetry

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rodrigo.siqueira

remix of d/33634 by u/rodrigo.siqueira

function u(t) {

for(i=2e4;i--;x.fillRect(960+Y/Z,X/Z+540,.1,t<2))r=.3+.01/t+S(i/1.6/t),X=r*C(k=i/1.4/t)*580,Y=r*S(k)*580,Z=r**S(i*i)*2

Apr 22 2025 7:43 PM UTC

}// 118/140

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7 circles around a circle

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rodrigo.siqueira

remix of d/33642 by u/rodrigo.siqueira

function u(t) {

for(i=5e4;i--;x.fillRect(960+Y/Z,X/Z+540,.1,t<2))r=(z=t<.8?1/t:0)+S(i/1.6/t),X=r*C(k=i/1.4/t)*800,Y=r*S(k+k*z)*800,Z=r**S(i)*2

Apr 23 2025 11:10 PM UTC

}// 126/140

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7-circle overlay in a box

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kruno.ooo

function u(t) {

eval(unescape(escape`󩭯󬬨󬌽󜜷󛍷󟝰󚬸󛍱󟝷󛼲󛍣󛭷󪝤󭍨󟝷󚬲󛍸󛭳󨽡󫍥󚍳󟝔󚍴󛼹󚜬󬼩󛍩󟝷󚭷󞽩󛜭󞽸󛭦󪝬󫍒󩝣󭌨󦌭󬜫󭼯󬼬󦜭󬜫󬜯󬼬󫼦󦜼󬌪󜼿󜌺󫼦󦜾󬌪󝝼󯍶󛼶󚼮󜜬󜜩󚝯󟜨󭬽󚍘󟝩󙝷󚜯󬌦󜝞󚍙󟝩󛽷󚜯󬌦󜜩󙭰󟌨󨜽󦌥󬌩󚬨󨬽󦜥󬌩󙭰󛼨󬌭󨜩󟍰󛝢󙭰󛽡󟍰󛝢󙭰󛽢󟍰󛝡`.replace(/u../g,'')))

Apr 21 2025 6:25 PM UTC

}// 140/140

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#checkers

u/kruno.ooo

p=24 for #circlechallenge (and lower FPS)

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rodrigo.siqueira

remix of d/33618 by u/rodrigo.siqueira

function u(t) {

for(i=2e4;i--;x.fillRect(960+Y/Z,X/Z+540,.1,t<2))r=.6+C(i/.9/t)/2-.3,X=r*C(k=i/.7/t)*1000,Y=r*S(k)*1000,Z=r**S(i*i)*2

Apr 22 2025 1:28 PM UTC

}// 117/140

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7 patterns inside the circle

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thenize

function u(t) {

c.width*=1
for(i=19;i--;x.setTransform(C(n=t+C(t)*i/3)*5,-S(n),S(n)*2,C(n),960,99+i*70),x.font='5cm a')x.fillText([...'🤯🤓🥳😭👽 '][i%6],-15,70)

Apr 23 2025 6:08 PM UTC

}// 140/140

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i like aliens 👽

u/warbino

my motion sickness!
u/lewdev

Remix of d/33552

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Axioplase

remix of d/33638 by u/Axioplase

function u(t) {

for(i=2e4;i--;){r=S(t)*2e3,X=r*C(t*t),Y=r*S(t*t),Z=(C(Math.floor(1*X/i+1*Y/i)))*t*t,a=50/t*(t<3.1),x.fillRect(960+Y/Z,X/Z+540,a,a)}

Apr 23 2025 2:15 AM UTC

}// 131/140

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Twirl

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Xen

remix of d/33640 by u/BriSeven

function u(t) {

for(t?C=5:a=T=225;C--;x.fillRect(T*8-t*60%T*8,(5-C)*8+(t*60/T)*60,8*(V=32085>>(a*t&1<<3|a>>A-3&7)&1),8),a=a&~(1<<A)|V<<A)C||(a>>=1),A=C*2+1

Apr 23 2025 4:16 PM UTC

}// 139/140

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Golfed to fit

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Xen

function u(t) {

for(i=9+(t/2|0);i--;)t?x.clearRect(960+C(t*99+(i*t/7))*t*19,t*(19+S(t)),.7,-t):x.fillRect(0,0,2e3,2e3)

Apr 22 2025 3:10 PM UTC

}// 102/140

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Slow Art Play