Dweets awesomed by u/jwc

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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DataMeta

remix of d/21041 by u/DataMeta

function u(t) {

f=(X,Y,n=3)=>n?f(T(X**3-Y**2),3*S(1+X*Y),n-1):Y**2
for(X=1920;X--;)x.fillRect(X,t*60,r=f(X/1920,3/(Math.PI+t))/5,r)

Jan 2 2021 8:33 PM UTC

}// 115/140

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warped #slowdraw

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jwc

function u(t) {

eval(unescape(escape`𮠽𚁳🐨𭠽𭀥𜐴𛠵𝰩🀲𚐿𜀺𭠭𜠊𩡯𬠨𨰮𭱩𩁴𪁼👪🐱𝠻𪠭𛐻𚑦𫱲𚁫🐲𜀻𪰭𛐻𚑦𫱲𚁩🐲𝐻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁷𚰲𚠨𬐽𜠴𛑩𚐪𠰨𜰪𮠫𪐯𜠴𛑷𛰴𩐳𚐪𚀱𛠵𚱃𚁺𚐩𚰨𬰿𬐺𜀩𚡓𚀵𝠮𝐵𚡶𚱩𛰲𝀩𛀵𝐰𚱫𚡫𚱩𚠶𛁩𛰵𛀶𚐩𭰽𜐲𞀪𪠫𪰥𜠮𜰪𝐶`.replace(/u../g,'')))

Jan 1 2021 10:54 AM UTC

}// 137/140

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Grass in the wind

u/jwc

Uncompressed: z=(s=(v=t%14.57)<2)?0:v-2;for(c.width|=j=16;j--;)for(k=20;k--;)for(i=25;i--;x.fillRect(w+2*(q=24-i)*C(3*z+i/24-w/4e3)*(1.5+C(z))+(s?q:0)*S(56.55*v+i/24),550+k*k+i*6,i/5,6))w=128*j+k%2.3*56
u/jwc

Now that I’ve accepted that this will probably never fit in 140 chars uncompressed, I might consider working on smoothing the transition when the strong wind starts and stops…

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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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Xen

function u(t) {

t?z>99?(i+=e,e=4,f+=z=1):x.fillText(f%(z*=4)==z/2?e=1:0,g+=C(y=355/339*i),h-=S(y)):e=z=h=f=i=g=134

Dec 25 2020 10:04 PM UTC

}// 98/140

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98byte Koch #snowflake

u/jwc

This is beautiful!
u/DataMeta

Yes! #waitforit
u/Xen

#fractal

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magna

remix of d/21060 by u/jwc

function u(t) {

for(c.width|=i=q=r=s=.1;i<t;x.fillRect(960+16*(q*C(t)+(s-28)*S(t)),540+20*r,4*i/t,4),i+=.01)o=r,r+=(q*(28-s)-r)/50,s+=q*o/50-s/25,q+=(o-q)/5

Dec 25 2020 6:51 AM UTC

}// 140/140

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Golfed to center rotation

u/jwc

Perfect, thanks for spotting that!

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rodrigo.siqueira

remix of d/21060 by u/jwc

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=q=r=s=.5;i<250;x.clearRect(960+9*q*C(t)+K*S(t)*20,540+26*r,6,4),i+=.1)r+=q*(K=40-s)/99,s+=q*r/70-s/45,q+=r-q/5

Dec 25 2020 2:13 AM UTC

}// 140/140

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Rotating Lorenz Attractor remix #lorenz

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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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jwc

function u(t) {

for(t/=.6,c.width|=i=32;--i;)for(j=18;--j;x.fillRect(60*i-20*C(j+t),60*j-20*S(i+t),s,s))d=9-((16-i)**2+(9-j)**2)**.5/4,s=3+d*C(d/.8+t*2)**2

Dec 23 2020 4:05 AM UTC

}// 139/140

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irishscan

function u(t) {

c.width=1920
for(i=0;i<216;i++)
x.fillStyle=`hsl(${99*(i%9)},50%,50%)`,x.fillRect(S(t*i)*(10*(t))+950,C(t)*(10*(t))-(20*i)+1080,30,10)

Dec 22 2020 7:14 PM UTC

}// 134/140

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FIrst time just trying stuff out

u/Xen

Welcome to the dwitter family!

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jwc

function u(t) {

with(x)for(c.width|=b=190;p=t+b/.6,r=64-64*S(p),b--;d=6+S(p),fill(ellipse(960-240*(1+b%2)*C(p),6*b,d,d,0,0,7)))beginPath(fillStyle=R(r,r,r))

Dec 22 2020 2:29 AM UTC

}// 140/140

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I know it’s not that sophisticated, but it’s my first attempt at a dweet. I’m learning a lot looking at all the amazing work here.

u/jwc

I wanted to do something like d=6+S(p)*(1+b%2), but I couldn’t figure out how to make it fit.
u/pavel

arc?
u/jwc

Hah, of course! I was originally planning on trying an effect that squeezed one axis differently than the other and gave up on that, but didn’t think to replace ellipse with something else afterward. arc makes it perfectly fit in 140 with the above revision to d. Thanks :)
u/andrea270872

Nice. I get a vibe like "beam me up!" :)
u/jwc

This looks a lot better, but probably not different enough to be worthy of a remix :)with(x)for(c.width|=b=190;p=t+b/.6,r=64-64*S(p),b--;fill(arc(960-180*(1+b%2*2)*C(p),6*b,6+2*S(p)*(1+b%2),0,7)))beginPath(fillStyle=R(r,r,r))

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