Dweets awesomed by u/DaSpider

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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ciaccodavide

remix of d/14505 by u/simonmkwii

function u(t) {

for(x.fillRect(0,0,i=640,i);z=--i**.3;x.fillStyle=R(0,500/--z))x.setTransform(s=20/z+S(t),0,0,s,0,0),x.fillText('*',i%z*99-C(t),t++%z*60)

Dec 30 2020 3:42 PM UTC

}// 137/140

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command line #snowflake

u/andrea270872

Matrix Xmas :D Very cool!

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jwc

function u(t) {

for(c.width|=i=q=r=s=.1;i<t;b=4*i/t,x.fillRect(960+16*(q*C(t)+s*S(t)),540+20*r,b,b),i+=.01)o=r,r+=(q*(28-s)-r)/50,s+=(q*o-2*s)/50,q+=(o-q)/5

Dec 24 2020 10:17 PM UTC

}// 140/140

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Rotating Lorenz Attractor

u/jwc

Deleted my previous attempt and replaced it with this instead because I found an obvious savings that allowed me to improve rect size. If you can save 5 chars, you can replace s*S(t) with (s-28)*S(t) to center the rotation. Alternatively, if you can save one char, you can remove b, make the last two args of fillRect …,4*i/t,4), and use the previous centering method with a small concession to the rect shape.
u/magna

Done! d/21062
u/magna

The key was replacing (q*o-2*s)/50 with q*o/50-s/25
u/jwc

Nice!!

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pavel

function u(t) {

for(i=c.width|=m=[h=1080];i--;)m[i]=i**3%h
m.sort((a,b)=>(t-=1/h)>0&&a-b).map((n,i)=>x.fillRect(i,h-n,1,n,x.fillStyle=`hsl(${n/9},69%,50%`))

Dec 22 2020 11:33 PM UTC

}// 140/140

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Visualizing Array.sort

u/pavel

This probably works and is probably merge #sort :)
u/ciaccodavide

Nice!

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pavel

remix of d/21012 by u/pavel

function u(t) {

with(x)for(c.width|=i=710;i--;beginPath(fill(ellipse(40+18*C(a=++t%3.1416),0,w=S(a),!rotate(i*49+w/3),a,0,7))))setTransform(9,0,0,9,960,540)

Dec 17 2020 3:03 AM UTC

}// 140/140

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Torus Study #2

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rodrigo.siqueira

remix of d/20959 by u/jellyedwards

function u(t) {

c.style.filter=`invert(`
for(e=k=c.width|=w=50;k--;x.fillRect(w|x.rotate(k%w+t/4),9,1,1))
x.setTransform(v=2+k%7,0,0,v,k,(k*k+t*v)*w%e-w*8)

Dec 15 2020 6:23 PM UTC

}// 139/140

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Night snow #snowflake

u/Xen

smooth!
u/pavel

Nice. Here's 126, maybe room for snowflake code with(x)for(fillRect(0,0,i=2e3,i);i--;)clearRect(50,9,!setTransform(s=2+i%7,0,0,s,i,i&&(i*i+t*s)*50%2e3-400),i&&!rotate(i+t/4))

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lerc

function u(t) {

eval(unescape(escape`𭁼𯀨𨰮𭱩𩁴𪀽𜰲𜀩𒡸𛡦𪑬𭁥𬠽𘡢𫁵𬠨𜀮𝑰𮀩𨡲𪑧𪁴𫡥𬱳𚀹𞐥𚑨𭑥𛑲𫱴𨑴𩐨𜡤𩑧𚐢𒡸𛡤𬡡𭱉𫑡𩱥𚁣𛀰𛀭𜰩𒡦𫱲𚁩🐳𜠰𞱩𛐽𜠻𚑻𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀳𝀰𛀱𜀰𙐬𙁻𤰨𠰨𭀪𪐩𚡩𚱴𚠸𚐪𜠰𚰸𜁽𙐩𨀊𮀮𩡩𫁬𤡥𨱴𚁩𛀱𞐰𛀲𛀸𚑽`.replace(/u../g,'')))

Dec 14 2020 7:49 AM UTC

}// 135/140

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Old style effect, experimental new canvas features

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Pascal

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𩡩𫁴𩑲🐢𨡬𭑲𚀱𜁰𮀩𨱯𫡴𬡡𬱴𚀹𞐩𪑮𭡥𬡴𚀩𘠻𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀱𞐲𜀬𜐰𞀰𚐻𩡯𬠨𪠽𜡥𜰻𪠭𛐾𜀻𚑲🐲𜀰𛰨𦠽𚁔𚁪𚠮𝠱𚐭𭀯𜠰𚐥𜐩𛁸𛡣𫁥𨑲𤡥𨱴𚁃𚁪𚐪𬠫𞐶𜀬𤰨𪠪𪠩𚡲𚰵𝀰𛀶𜀯𦠪𚠰𛠵𛀶𜀯𦠪𚠰𛠵𚐠`.replace(/u../g,'')))

Dec 13 2020 1:55 PM UTC

}// 131/140

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Liquid cow #metaballs

u/magna

Wow!

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lerc

remix of d/20889 by u/lerc

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑻𥠽𨐽🡓𚁴𚡡𚐊𫀽𨐽🠨𩁲𨑷𢑭𨑧𩐨𨰬𛑷𛀭𪀩𛁖𚁡𚐫𜐩𒡳𩑴𥁲𨑮𬱦𫱲𫐨𜐬𛠱𞀬𛐮𜐸𛀱𛁷🐹𝠰𛁨🐵𜠰𚐊𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱬𚀮𞀩𚡷𯐠𞐹𙐵𜀥𨀊𩡩𫁬𤡥𨱴𚁵🐨𫀨𜠮𜐩𛑬𚀱𚐩𚠱𞀰𛀰𛀹𛀹𚐊𩡩𫁬𤡥𨱴𚀭𭐭𞐬𜀬𞐬𞐩𯐻`.replace(/u../g,'')))

Dec 2 2020 10:27 AM UTC

}// 135/140

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Another touch of psychedelia. Tweaked for HSL not resizing canvas, nicer effect

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jellyedwards

remix of d/20746 by u/jellyedwards

function u(t) {

x.setTransform(28,0,0,30,800,400)
x.fillText('⊙⊙',0,2)
x.stroke(new Path2D(`m3-4c0-9 9-9 9 0M3 2c0 30 11 9 11 8q2-3 4-2M6 4c0 9 6 9 6-3`))

Nov 22 2020 10:27 PM UTC

}// 138/140

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A bit more like him

u/Xen

you made me spit beer! next level is bonzibuddy
u/jellyedwards

Oh god, I had forgotten about bonzibuddy! :D

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taupelink

remix of d/20630 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.strokeRect(k*X,k*Y,i/t,k/t))X=r(Y=r()*5)*9,h=k*S(S(Y*.7)%C(p=S(q=1.5-X/3)*q+2)),x.strokeStyle=R(h*q,h*p,h*Y)

Nov 22 2020 7:22 PM UTC

}// 140/140

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d/20784

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