Dweets awesomed by u/geb

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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Current theme challenge: #Opposites

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KilledByAPixel

remix of d/15138 by u/KilledByAPixel

function u(t) {

for(c.width|=0,k=49;x.beginPath(p=2.0944),k--;x.fill(),t=-t)for(j=6;j--;x.arc(600+(k%7)*w,180+(K=k/7|0)*w,80,q=t+j*p+k*p/2+(k+K&1),q))w=120

Jul 26 2019 7:13 PM UTC

}// 139/140

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Triangle Gears

u/cantelope

mesmerizing!
u/KilledByAPixel

#gears

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donbright

remix of d/15061 by u/taupelink

function u(t) {

t||(a=[],s=r=k=0)
J=s-r+k
x.fillStyle=R(a[s+k]=k%r?a[J]+a[J-1]:1,a[J-1],a[J-2])
r<99&&x.fillRect(1e3-8*r+16*k,8*r+8,8,8)
++k>r&&(s+=++r,k=0)

Jul 24 2019 3:51 PM UTC

}// 140/140

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Pascal's funky triangle

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KilledByAPixel

function u(t) {

Y=c.height|=0
p=Math.PI/2
for(d=1;Y>390;d=-d,Y-=2*o)for(j=5;j--;x.arc(960,Y-o,170,q=d*(t+j*p),q))o=170*C((m=(d*t%p+p)%p)>p/2?p-m:m)
x.fill()

Jul 21 2019 1:08 AM UTC

}// 140/140

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Walking Squares

u/KilledByAPixel

https://www.reddit.com/r/loadingicon/comment…

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pavel

function u(t) {

eval(unescape(escape`𩡯𬠨𫀽𨰮𭱩𩁴𪁼👴𙐽𝀻𫀭𛐻𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀵𜀬𫰿𝐰𞠱𩐳𚐩𪐽𫀥𜰬𪠽𫀯𜰦𜐵𛁫👬𛰴𞀦𜐵𛁸𛡦𪑬𫁓𭁹𫁥👒𚁩𚰱🀼𝠩𛁸𛡳𩑴𥁲𨑮𬱦𫱲𫐨𪐭𜑼𜐬𛐮𝐬𫰽𛑩𙐲𛀱𚱯𚠱𛠵𛀵𜀪𚀱𞐫𪰭𪠩𛀲𝐪𚀳𞀫𜠪𭀭𪰭𪠭𞀯𚀱𚰲𚠪𚀴𝐭𪰭𪠭𭀪𜐵𚐩𚐩`.replace(/u../g,'')))

Jul 13 2019 3:37 AM UTC

}// 138/140

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Blocks (https://dribbble.com/shots/1783699-Blocks)

Show more comments…
u/pavel

190 for(l=c.width|=t%=4;l--;x.fillRect(0,0,50,o?50:1e3))i=l%3,j=l/3&15,k=l/48&15,x.fillStyle=R(i+1<<6),x.setTransform(i-1|1,-.5,o=-i%2,1+o*1.5,50*(19+k-j),25*(38+2*t-k-j-8/(1+2**(45-k-j-t*15))))
u/KilledByAPixel

👍
u/aleamb

wow!!
u/username

actual f
u/katkip

awesome #compressed
u/katkip

#d3 #loop

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stefano

function u(t) {

c.width=1920
for(i=0;i<16;i++)
for(j=0;j<9;j++)
x.fillRect(i*120,j*120,100*Math.abs(C(t)),100*Math.abs(S(t)))

Jul 2 2019 12:10 PM UTC

}// 109/140

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My first dweet

u/Xen

nicely done
u/donbright

great optical illusion

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Blacklink

remix of d/7520 by u/Blacklink

function u(t) {

eval(unescape(escape`挮睩摴桼㴰㭦潲⡩㴰㭩㰱㤻椫⬩景爨樽〻樼ㄱ㭪⬫⥻砮晩汬却祬攽恨獬⠤筩⨱㡽ⰹ〥ⰵ〥总焽匨琫椪⸲⤻猽⸸⬮㈪焻瀽⡲㴱〰⤪猻砮晩汬剥捴⡲⩩⬵〪⠱⵳⤬爪樫㔰⨨ㄭ猩⭱⨲〬瀬瀩紻`.replace(/u(..)/g,"$1%")))

Jul 1 2019 10:17 PM UTC

}// 129/140

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I don't usually like to cheat like this but I saw no other way to make this one fit, so yeah; 2 days too late but who cares #pride

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KilledByAPixel

remix of d/14863 by u/KilledByAPixel

function u(t) {

c.width|=0;for(z=j=4e3;j--;x.arc(960,540,350+99*S(j/500+a*4)*S(2*(a-t))**5,a,a))a=j/159+t
x.rect(0,0,z,z)
x.fillStyle="#537"
x.fill`evenodd`

Jul 1 2019 6:16 PM UTC

}// 140/140

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Circle Wave Squared

u/KilledByAPixel

I figured out the circle wave looks really good with an evenodd fill. Also, you can change the 4 in j=4e3 to change number of layers, and toggle between filled or not if even/odd
u/joeytwiddle

Makes me think of a Fourier series d/4003 but in polar coords
u/katkip

This is cute
u/Toby

Beautiful!

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Xen

remix of d/14852 by u/Xen

function u(t) {

for(c.width=k=379;k--;)x.arc(191+C(t*9+k),99+S(t*8+k),k/3,-t,t)
x.fill`evenodd`

Jul 1 2019 3:39 PM UTC

}// 79/140

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Dweetnosis

u/Xen

#moire #trippy #spiral

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KilledByAPixel

function u(t) {

c.width|=c.style.background="#CDF";for(j=3e3;j--;x.arc(960,540,430+60*S(j/500+a*4)*(S(a-t)/2+.5)**9,a,a))a=j/159+t,x.lineWidth=29
x.stroke()

Jul 1 2019 2:56 PM UTC

}// 140/140

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Circle Wave #beesandbombs 🐝 💣

u/KilledByAPixel

This one was fun because I found a way to combine the loops and hide the start/end gap that removes the need for a beginPath. Freeded up enough space for background color, or something cool in a remix.
u/aleamb

yeah!
u/pavel

Buggy in Safari. Jagged things sticking out, i think from the line end-caps, also breaks after a while because you didn't wrap-around the angle in arc.
u/pavel

Huh, actually both issues are resolved by modding the arc angle by 2*pi
u/KilledByAPixel

Explanation for how it works at http://frankforce.com/?p=6597

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taupelink

function u(t) {

t||(c.width=162,r=X=4567,s=Y=89,h=l=n=1,i=k=0)
r&&x.fillText(h+`x${X}+(${k})x${Y}=`+r,0,n++*9),q=r/s|0,[h,k,r,i,l,s]=[i,l,s,h-q*i,k-q*l,r%s]

Jul 1 2019 4:45 AM UTC

}// 140/140

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Extended Euclidean algorithm, to find h, k such that hX+kY=gcd(X,Y) #math #numbertheory

u/durian-favored-monster

i remember this in high school it was very cool! good job! this is the best text one i've seen
u/geb

EEA is so cool!

dwitter.net | geb (18677)