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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danny@hille.dk

remix of d/23514 by u/danny@hille.dk

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪌽󭼽󞜹󞽦󫽲󚍭󟝷󚭷󞽭󛜭󞽸󛭦󪝬󫍓󭍹󫍥󟝒󚍲󟝭󛼸󚽓󚍡󛼹󚜪󤼨󨬯󝬫󭌪󞜫󤼨󨜯󞌭󭌪󜼩󚜪󭼬󬬪󛬶󚜩󩜽󚍘󟜱󛜴󚭭󛽷󛽷󚜪󦌫󚍙󟜭󜬫󝌪󚍭󙝷󚜯󭼩󚭙󛍸󛭦󪝬󫍒󩝣󭌨󨜽󫜥󭼬󨬽󫜯󭼬󜜬󜜭󚍙󚬨󫼽󚌳󛜨󝌭󝜪󩜩󚬪󛬵󚜯󚼫󩜩󚭷󚽴󚭷󙭷󧭘󚭯󚭷󙭷󚜯󭼩`.replace(/u../g,'')))

Aug 9 2021 9:05 PM UTC

}// 140/140

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disco inferno remix - #disco #ball #spere #fire

Show more comments…
u/danny@hille.dk

uncompressed: c.width=w=99;for(m=w*w;m--;x.fillStyle=R(r=m/8+S(a/9)*S(b/6+t*9+S(a/8-t*3))*w,r*.6))e=(X=1-4*m/w/w)*X+(Y=-2+4*(m%w)/w)*Y,x.fillRect(a=m%w,b=m/w,1,1-(Y*(o=(3-(4-5*e)**.5)/++e)*w+t*w&w^X*o*w&w)/w)
u/danny@hille.dk

2 more variants:
u/danny@hille.dk

c.width=w=99;for(m=w*w;m--;x.fillStyle=R(r=m/8+S(a/9)*S(b/6+t*9+S(a/8-t*3))*w,r*.6))e=(X=1-4*m/w/w)*X+(Y=-2+4*(m%w)/w)*Y,x.fillRect(a=m%w,b=m/w,1,1+(Y*(o=(3-(4-5*e)**.5)/++e)*w+t*w&w^X*o*w&w)/w)
u/danny@hille.dk

and
u/danny@hille.dk

c.width=w=99;for(m=w*w;m--;x.fillStyle=R(r=m/8+S(a/9)*S(b/6+t*9+S(a/8-t*3))*w,r*.6))e=(X=1-4*m/w/w)*X+(Y=-2+4*(m%w)/w)*Y,x.fillRect(a=m%w,b=m/w,1,(Y*(o=(3-(4-5*e)**.5)/++e)*w+t*w&w^X*o*w&w)/w)
u/danny@hille.dk

I think this is my favorite:
u/danny@hille.dk

c.width=w=127;for(m=w*w;m--;x.fillStyle=R(r=m/8+S(a/9)*S(b/6+t*9+S(a/8-t*3))*w,r*.6))e=(X=1-4*m/w/w)*X+(Y=-2+4*(m%w)/w)*Y,x.fillRect(a=m%w,b=m/w,1,(Y*(o=(3-(4-5*e)**.5)/++e)*w+t*w&w^X*o*w&w)/w*2)
u/neimad

wtffffffff
u/magna

constraints stoke fire
u/ullo

good

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cantelope

function u(t) {

eval(unescape(escape`𤐽𫐽🡸𛡬𪑮𩑔𫰨𞐶𜀫𤰨𬀽𪐯𞐮𝐵𚱴𚐪𤰨𫠽𬐯𜐲𚐯𚁚👃𚁰𚐪𤰨𫠩𛑓𚁴𚐭𜠩𚡨𛁨𚱃𚁮𚐯𦠪𪀩𞱦𫱲𚁣𛡷𪑤𭁨𯀽𪀽𝐴𜀬𮀮𩡩𫁬𤱴𮑬𩐽𙰣𜀹𨠸𙰬𪐽𪀪𝀻𪐭🐲𞱸𛡢𩑧𪑮𤁡𭁨𚁸𛡦𪑬𫀨𚐩𚑩𩠨𚁩𚰨𬐽𪐯𝠰𯀰𚐩𙐲𚑑𚁑𚁑𚁑𚀩𛀫𚱩𚐬𚰫𬐩𛀭𛑩𚐻`.replace(/u../g,'')))

Aug 10 2021 6:09 PM UTC

}// 140/140

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u/aleamb

#sphere #p3d

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ArthurThuczsec

remix of d/23540 by u/rodrigo.siqueira

function u(t) {

c.width|=r=350;for(φ=2;φ>-19;φ-=.1)x.arc(C(φ-t)*S(t)*r+960,S(φ+t)*C(t/2)*r+530,φ*φ,0,9);x.fill("evenodd")

Aug 11 2021 8:33 PM UTC

}// 105/140

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mxfh

remix of d/23536 by u/mxfh

function u(t) {

r=70;c.width|=w=440;for(λ=φ=a=w/r;λ+=a,φ>-a;φ-=.1)x.arc(C(φ)*S(d=λ-t)*r+w,(S(φ+a/4)*C(φ)*C(d))*r+w,φ**4,0,a)
x.fill("evenodd")

Aug 11 2021 7:42 PM UTC

}// 126/140

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44/7 vs 710/113

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KilledByAPixel

remix of d/23535 by u/KilledByAPixel

function u(t) {

for(i=4*(c.width=450);i--;x[(t+j+i/350)&1|j>7?'moveTo':'lineTo'](225-C(t/2)*99+(64-i/14)*S(a=j*.4),99+86*C(t)**2+64*C(a)))j=i%9
x.stroke()

Aug 11 2021 2:41 AM UTC

}// 138/140

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Amiga Ball #uncompressed #amiga

u/KilledByAPixel

fixed bounce for(i=4*(c.width=450);i--;x[(t+j+i/350)&1|j>7?'moveTo':'lineTo'](225-C(t/2)*99+(64-i/14)*S(a=j*.4),179-86*S(t%3.2)+64*C(a)))j=i%9;x.stroke()
u/vain

AMIGA !!!!! :D

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bandaloo

remix of d/19281 by u/bandaloo

function u(t) {

for(i=2e3;i--;x.fillStyle=`hsl(${i/9+t*9},80%,${9+60*~~((1+C(t)+9*C(i/(99+80*C(t)))*S(t*9))%4)}%`)x.fillRect(i,0,1,9);x.drawImage(c,0,9)

Aug 10 2021 9:52 PM UTC

}// 136/140

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rodrigo.siqueira

remix of d/23469 by u/rodrigo.siqueira

function u(t) {

for(c.width=w=417,d=new ImageData(w,w),m=w*w,i=-1;m--;d.data[i+=4]=i*Y*w&w+t*m*w&i+9e8)X=m-t*5e4,Y=m%w&w+X/w
x.putImageData(d,0,0)

Aug 10 2021 12:02 PM UTC

}// 130/140

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#sierpinski static noise

u/magna

Very nice noise

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mxfh

remix of d/855 by u/mxfh

function u(t) {

r=113;c.width|=w=710;for(λ=φ=a=w/r;λ+=a,φ>-a;φ-=.1)x.arc(C(φ)*S(d=λ-t)*r+w,(S(φ+a/4)*C(φ)*C(d))*r+w,φ**4,0,a)
x.fill("evenodd")

Aug 11 2021 12:33 AM UTC

}// 127/140

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rodrigo.siqueira

remix of d/23536 by u/mxfh

function u(t) {

r=106;c.width|=w=300;for(λ=φ=a=w/r;λ+=a,φ>-a*12;φ-=.1)x.arc(C(φ)*S(d=λ-t)*r+960,(S(φ+a/4)*C(d))*r+530*(1+1/t),φ*φ,0,7)
x.fill("evenodd")

Aug 11 2021 2:07 PM UTC

}// 136/140

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Spinning Vortex #vortex

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LimeLaser

function u(t) {

h=(o,y)=>255*[1,1-t%1,0,0,t%1,1][((t|0)+o)%6]**(1/2.2)**y
for(v=2;v--;){x.fillStyle=R(h(0,v),h(4,v),h(2,v))
x.fillRect(60*t|0,540*v,1,500)}

Aug 11 2021 6:40 PM UTC

}// 139/140

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Comparison of Linear and "sRGB" Rainbows