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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SpecialAgent

function u(t) {

w=960,h=540,a=w+S(t*t)*99,b=h+C(t*t)*99
x.fillStyle=R(S(t)*255,0,128+C(t)*128)
x.fillRect(a,b,9,9)
x.drawImage(c,S(t)-2,C(t)-2,1924,1084)

Feb 26 2017 7:37 PM UTC

}// 137/140

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give it a minute to warm up :)

u/donbright

wow.. smooth and mysterious

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FireFly

remix of d/3005 by u/FireFly

function u(t) {

for(i=5e3;Z=(i--%4>1)+i/128;i%4||x.beginPath(x.fill()))X=i%128+2>>2,x.fillStyle=R(Y=S(X*X/32+Z*Z/32-X-Z-t*6)*80+99),x.lineTo(X*60,Z*35-Y)

Aug 3 2017 9:03 PM UTC

}// 137/140

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Ripples! With proper quads instead. Add +Z*X-Z*16 after X*60 for perspective projection too (brings it up to 146)

u/FireFly

Another byte can be saved with with(x), but this causes a fair bit of slowdown for me. Thanks for some golfing tips from qfox and others on the jsgolf slack :)
u/cantelope

can't stop watching. def in my top 10 favs
u/iverjo

Very impressive!

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Valui

function u(t) {

c.width|=0;for(i=0;i<20;i++)x.fillRect(i*100,540+200*S(t+i/5),80,400*S(i/9+t)),x.fillStyle=`hsl(${i*18},80%,${50+S(t)*20}%)`;

Nov 19 2024 1:48 AM UTC

}// 125/140

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Alaaddin's Rainbow Flying Carpet :)

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jonathan_b

remix of d/4796 by u/jonathan_b

function u(t) {

for(c.width|=i=j=2**9;i--;)p=t-8*i,x.fillStyle=`hsl(${p},54%,47%,1)`,x.beginPath(),x.arc(j*2+i*2*C(i)*C(p),j+i*S(i),5*C(p)+25,0,7),x.fill();

Dec 30 2017 4:34 AM UTC

}// 140/140

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tomxor

remix of d/23413 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𠐽𠠽𥐽𥠽𞀻𪐭𛐻𥀽𤰨𦀯𝠩𚱃𚁙𛰽𝠩𚱙🠸𚑸𛡦𪑬𫁒𩑣𭀨𦀽𪐥𭰬𦐽𪐯𭰬𜐬𥁼𤠼𜀩𛁡👘𛑁𛁢👙𛑂𛁒👡𚡡𚱢𚡢𛐲𝐬𥀦𤠼𜐦𙠨𥐫👒𚡡𛁖𚰽𤠪𨠩𞱁𚰽𥐯𭰫𭰬𠐥👷𛁂𚰽𥠯𭰬𥠫🐱𞀭𥠯𜱥𜰻`.replace(/u../g,'')))

Jun 28 2022 8:24 PM UTC

}// 129/140

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Smoler Impossible Marble #Physics

u/tomxor

-11 bytes: Eliminated the intermediate k, moved some coefficients around, and swapped hypot for square values which is actually more stable for intersection resolution. Now it will never stop jiggling :D
u/magna

WOW!
u/pavel

Currently traced pixel is part of the ball and part of the background therefore collision. Awesome trick. My first time seeing this.

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cantelope

function u(t) {

for(R=Math.random,P=Math.PI,i=w=960;i--;x.fillRect(w+S(p=w*R())*S(q)/Z*w,540+C(p)*S(q)/Z*w,1,1))Z=2.1+C(q=(P*(R()>.5?-1:0))+(R()**.5*P/2))

Nov 17 2017 7:54 AM UTC

}// 138/140

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u/joeytwiddle

I found this red and orange cousin: https://www.dwitter.net/d/810
u/joeytwiddle

#stochastic
u/joeytwiddle

#sphere

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KilledByAPixel

function u(t) {

eval(unescape(escape`𬠽𦀽🡓𚀨𚁘𯀰𚐪𚠨𦐥𞐹𯀰𚐩𚐻𫀽𧰽🡲𚁘𚐪𚀱𛑘𙐱𚐫𦀥𜐪𬠨𦀫𜐩𞱣𛡷𪑤𭁨𯀽𩠽𧰽🠨𜐭𦐥𜐩𚡬𚀩𚱙𙐱𚡬𚁙𚰫𚐻𭰽𜰲𞱦𫱲𚁪🐶𜠻𪠭𛐻𚑦𫱲𚁩🐳𞀻𪐭𛐻𮀮𫁩𫡥𥁯𚁪𚡷𛑺𚠳𞐬𪐪𭰩𚑺👦𚁘👩𛰵𚰹𛁙👪𛰵𚱴𚠲𚐊𮀮𫁩𫡥𥁯𚀰𛀲𩐳𚐻𮀮𩡩𫁬𚀩`.replace(/u../g,'')))

Jun 27 2019 6:30 PM UTC

}// 140/140

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Gradient Noise Test 2

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KilledByAPixel

remix of d/16310 by u/KilledByAPixel

function u(t) {

with(x)for(c.width|=z=i=140;i--;fillText(code[i],0,0))save(restore(textAlign='center')),translate(i%16*99+z,(i>>4)*99+z),scale(19*S(i+t),10)

Nov 13 2019 7:44 AM UTC

}// 140/140

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Getting in on the #quine action.

u/Xen

love it
u/Odog8

lovely
u/katkip

#text

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rodrigo.siqueira

remix of d/24935 by u/taupelink

function u(t) {

for(m=6e3;m--;x.fill())X=C(m),v=1-S(X/t),w=2/t,x.fillStyle=R(i=m%368+24,i/w/t,i*v,.1),x.beginPath(),x.arc(950+880*C(X*m),540+489*X,m/i,w,v)

Feb 18 2022 1:56 PM UTC

}// 139/140

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Purple storm over alien city #waitforit

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mrfoogles

remix of d/22336 by u/mrfoogles

function u(t) {

w=c.width=1920
x.globalCompositeOperation='xor'
x.translate(w/2,w/3)
for(i=0;i<10000;i++)x.fillRect(S(t+i)*w/4,C(t-i)*w/4,100,100)

Apr 2 2021 9:43 PM UTC

}// 130/140

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Stretchy band