Top dweets of all time

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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taupelink

function u(t) {

t||(x.font=`30em"`,x.fillText("1+",40,620),x.fillText("1",1050,400),x.fillRect(570,b=450,1200,24))
x.drawImage(c,0,0,2e3,1e3,650,b,1100,550)

Jul 24 2019 3:24 AM UTC

}// 140/140

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Continued fraction for the golden ratio, 1+sqrt(5)/2. #math #numbertheory https://en.wikipedia.org/wiki/Golden_ratio

u/taupelink

hmm, doesn't seem to work on iOS Safari
u/taupelink

to get it to work on iOS/MacOS, replace 2e3 with 1920 and 1100 with 1e3.
u/taupelink

* maybe it's a safari issue rather than an OS issue. * on my iOS device, that adjustment seems to work temporarily, but then the browser has to reload the screen. ¯\_(ツ)_/¯
u/PotatoImaginator

Amazing

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KilledByAPixel

remix of d/14823 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𬰽𚁡𛁢𛁰𚐽🡢𚠨𬀪👰𚠨𜰭𜠪𬀩𚐫𨐪𚀱𛑰𚐻𬠽𦀽🡓𚁘𧡙𚐻𫀽𧰽🡳𚁲𚁘𚐬𬠨𦀫𜐩𛁘𙐱𚐻𮀮𩁲𨑷𢑭𨑧𩐨𨰬𜀬𛐲𚐻𩡯𬠨𪐽𜡥𜰻𦀽𛐭𪐯𜰹𞐫𞐻𮀮𩡩𫁬𤡥𨱴𚁩𛀱𜀷𞀬𜐬𬐩𚑱🐲𝐵𚡳𚁬𚁙👴𚐬𫀨𦐫𚰩𛁙𙐱𚐬𮀮𩡩𫁬𤱴𮑬𩐽𤠨𛑱𛀱𜠹𛑱𛰲𛁱𚠳𚐻`.replace(/u../g,'')))

Jul 19 2019 1:08 AM UTC

}// 140/140

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Smooth Lands

u/KilledByAPixel

I managed to fit smoothstep into my gradient noise algorithm!
u/iverjo

#landscape
u/katkip

Awesome! x4
u/KilledByAPixel

#island

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katkip

function u(t) {

c.width*=1;for(j=45;j--;){for(i=2;i--;)x.beginPath(),x.arc(0+i*1920,1640,60*j,t*2+4,t*2-3),x.fill();x.globalCompositeOperation='xor'}

Jul 9 2019 4:07 PM UTC

}// 133/140

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#xor

u/katkip

#waves
u/joeytwiddle

Yikes! My eyes are confused.

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pavel

function u(t) {

eval(unescape(escape`𬀽𣑡𭁨𛡐𢐻𫰽𤰨𭀪𬀯𜠩𞱏👴𛰲𙐳𯀰𞱸𛡦𪑬𫁓𭁹𫁥👯🀰🰧𘱦𩡦𙰺𤠨𚐻𩡯𬠨𪠽𜠰𜀻𦐽𪠭𛐾🠴𞱸𛡦𪑬𫀨𚐩𩡯𬠨𮀮𨡥𩱩𫡐𨑴𪀨𪐽𝀩𞱩𛐭𞰩𮀮𨑲𨰨𝠹𚠨𪠥𜐶𚠲𛑙𙐲𛑏𚐬𝠹𚠨𚁙𚱏𛰳𚐪𜰪𚠮𝐭𝀩𛀱𜰸𚡯𚡯𛁡👰𛰳𚠨𜠪𪐭𫰪𫰭𜰯𜠩𛁡𚐻`.replace(/u../g,'')))

Jul 3 2019 4:25 AM UTC

}// 137/140

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Triangles #loop

u/pavel

187 p=Math.PI;o=S(t*p/2);O=t/2%3|0;x.fillStyle=o<0?'#fff':R();for(j=200;Y=j-->>4;x.fill())for(x.beginPath(i=4);i--;)x.arc(69*(j%16*2-Y%2-O),69*((Y+O/3)*3**.5-4),138*o*o,a=p/3*(2*i-o*o-3/2),a)
u/KilledByAPixel

👍
u/katkip

#beesandbombs
u/katkip

#compressed

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joeytwiddle

remix of d/14824 by u/donbright

function u(t) {

c.width=400
d=(r,T)=>x.fillText(T,200+r*S(a=i/1.91),115-r*C(a))
for(i=N=t|0;i>1;i--)
for(N%i||d(60+i,i),k=50;k--;)N%i||d(k,'*')

Jun 29 2019 4:36 AM UTC

}// 127/140

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Prime factors on a clock #primes #math

Show more comments…
u/joeytwiddle

Shouts to donbright and taupelink!
u/joeytwiddle

35, 55, 77, 95, 115 and 119 all draw a lambda
u/katkip

Wow
u/taupelink

yay
u/DataMeta

Noice!
u/joeytwiddle

Oops this shows all factors, not just prime factors
u/donbright

hee hee sorry my description on the original was slightly misleading
u/donbright

you have golfed it down to where you might actually be able to do something only with prime factors
u/donbright

holy smokes... i just realized something. if you express an integer using this method, there are only 2 to the twelfth possible representations, which is 4096
u/joeytwiddle

Even fewer, since 4, 6, 8, 9, 10, and 12 never appear alone
u/joeytwiddle

They all light up at t=13860, after 3.85 hours #waitforit
u/joeytwiddle

For seconds/minutes use S(a=i/9.55) and d(60+i/4,i)
u/joeytwiddle

To see factors of odd numbers only, and quickly: i=N=t*22|1
u/donbright

cool

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KilledByAPixel

function u(t) {

c.width|=0
for(j=2093;j--;x.lineTo(j+(.1+q)*19*S(X=j/9+y/9+t*9),y+540))y=C(j/9)*540,q=(j-960)**2+y**2<2e5
x.fill()

Jun 27 2019 5:14 PM UTC

}// 114/140

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Circle in Waves

u/joeytwiddle

Nice. Novel!
u/magna

Great!
u/katkip

wow
u/katkip

#waves

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rodrigo.siqueira

function u(t) {

for(c.width=w=i=2e3;i--;)
X=S(i*i),Y=S(i),ℵ=C(Math.atan2(X,Y)-t)*Math.hypot(X,Y),
K=w/2,x.fillRect(w*ℵ/(Z=4+C(t)+X*X-Y*Y)+K,w+K*(ℵ-6)/Z,7,8)

Jun 26 2019 7:01 PM UTC

}// 140/140

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The Hyperbolic Paraboloid (z=x²-y²). The S(i*i) and S(i) are random number generators between -1 and +1. The atan2 and hypot are used to calculate 3d object rotation (Euler equations could also be used, as seen on /d/12086). Thanks to u/cantelope for the Tiny 3D Engine Tutorials: https://cantelope.org/tiny_3D/ and https://cantelope.org/3D/ #math #hypot #D3 #hyperbolic #surface

u/cantelope

:D
u/rodrigo.siqueira

There is an interesting fact that the Pringles potato chips are a truncated hyperbolic paraboloid. The strength of the shape helps to prevent them from breaking while stacked. The curvature of the shape improves resistance to tension and compression forces. Remember this next time you eat a hyperbolic paraboloid.

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cantelope

function u(t) {

with(x)for(k=i=1080;i---99;beginPath(fill(arc((i**3+p)%2e3,(i*i+p)%k,k/(i/(6+S(t*4+i)*6)),0,7))))fillStyle=`hsla(${i+(p=t*250)},99%,60%,.05`

Jun 22 2019 3:15 AM UTC

}// 140/140

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taupelink

function u(t) {

t||(a=[[]],r=k=0);x.font=`3em"`
a[r][k]=k%r?a[r-1][k-1]+a[r-1][k]:1
r<16&&x.fillText(a[r][k],960-60*r+120*k,60*r+60)
++k>r&&(a[++r]=[],k=0)

Jun 18 2019 1:17 AM UTC

}// 139/140

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Pascal's Triangle #math #recursive #recursion

u/katkip

Awesome!
u/donbright

#numbertheory

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rodrigo.siqueira

remix of d/14642 by u/rodrigo.siqueira

function u(t) {

A=Z=a=b=t-3;s=180
for(i=1e4;--i;)x.fillStyle=R(a*55,b*20,S(b-a)*99),x.fillRect(850+a*s,350+b*s,.7,.8),
a=1-b+Math.abs(a-S(a+2))/2,
b=A,A=a

Jun 17 2019 3:04 PM UTC

}// 138/140

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Patterns from the Gingerbread Man #attractor

u/Xen

sexy!
u/katkip

Nice #chaos
u/rodrigo.siqueira

#gingerbreadman
u/iverjo

Fascinating!
u/Qwitter

Wow, islands, everywhere