Dweets awesomed by u/BriSeven

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: #Opposites

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rodrigo.siqueira

remix of d/18445 by u/pavel

function u(t) {

for(X=f=c=>C(T(4*c/d)),Y=t/8-1.1,i=2e3;i--;x.fillRect(i,t*60,(1+f(X=i/480-2)*f(Y))/2,3))x.fillStyle=R(S(Y)*99,0,C(r=X*X+Y*Y)*99),d=r<0||S(r)

Apr 25 2020 6:31 PM UTC

}// 140/140

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Towards Infinity (Escher-like tilings) mirror #sphere #raytracing

u/KilledByAPixel

👍
u/joeytwiddle

#shiny

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑴𚠽𝠰𜀬𬱨𨑤𫱷𠱯𫁯𬠽𙰣𜠲𜠧𛁳𪁡𩁯𭱂𫁵𬠽𜰰𚱓𚁴𚠪𝐩𚠲𝐬𬡯𭁡𭁥𚁡👓𚁴𚐯𜠵𚐬𩡩𫁬𤡥𨱴𚀲𩐳𛑴𛁙🐱𩐳𛑴𚠹𙐱𜠰𜀬𤰨𭀪𚠳𚐪𝐹𚰲𜠰𛁓𚁴𚠪𝀩𚠵𞐫𜠲𞐬𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮰨𦐭𭀩𛰸𯐬𝰹𙐬𙁻𝐰𚰹𚡓𚁴𚡴𚑽𙑠𚐬𬡯𭁡𭁥𚀭𨐩`.replace(/u../g,'')))

Apr 24 2020 2:58 PM UTC

}// 140/140

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Stacked Rainbow Rectangles - https://codepen.io/DonKarlssonSan/pen/NWGbvmg

u/rodrigo.siqueira

Color sticky notes Post-it board
u/DataMeta

Wallpaper worthy
u/Xen

love it!

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BriSeven

remix of d/18368 by u/veubeke

function u(t) {

π=3.14
T=(x)=>π-(.5*x/π%1)*π*2
c=(x)=>(y=(x*x)**.5,16*x*(π-y)/(5*π*π-4*y*(π-y)))
x.fillRect(950,540,c(T(t+π/2))*300,c(T(t))*300)

Apr 24 2020 2:46 PM UTC

}// 128/140

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Bhaskara's Sine Approximation Formula #circlechallenge

u/BriSeven

what's kinda weird is the value of pi doesn't seem to matter much, it still makes a great looking circle.

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pavel

function u(t) {

f=(X,y,r=80,a=0)=>r>6&&[0,.4,-.4,0].map(o=>o?f(X+r*S(a)*C(X*y/4e4+t),y-r*C(a),r*.8,a+o):x.lineTo(X,y));c.width=640;f(320,360);x.stroke()

Apr 24 2020 8:23 AM UTC

}// 136/140

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Rotating #tree #fractal

u/pavel

Inspired by https://twitter.com/ntsutae/status/125356447…
u/neimad

You should do a twitch channel. amazing.
u/ntsutae

I’m honored.
u/pavel

u/ntsutae :O I love your stuff on twitter! 素晴らしですよ
u/vain

Great 3D version !!

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ersagun

remix of d/18403 by u/BriSeven

function u(t) {

X=(t%1)*600-300,Y=t*10-300
X*X+Y*Y<9e4&&x.fillRect(X+950,Y+540,10,10)

Apr 23 2020 3:19 PM UTC

}// 69/140

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just playing with it

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tomxor

remix of d/18413 by u/pavel

function u(t) {

for(w=c.width=120,i=9e3;i--;x.fillRect(i%w,i/w,1+S(9*X/d)**5*S(9*Y/d)**5,d/2+Y/3))X=i%w/30-2,Y=i/w/30-1,r=X*X+Y*Y,d=r>1||1+(1-r)*S(r*9-t*4)

Apr 23 2020 1:15 AM UTC

}// 139/140

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u/aleamb

impressive! #render #witchcraft #raytracing #scene

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BrutPitt

function u(t) {

c.width+=X=Y=Z=d=.19
for(i=9e3;i--;)X+=d*(-d*X+S(Y)),Y+=d*(-d*Y+S(Z)),Z+=d*(-d*Z+S(X)),
x.lineTo(960+99*(X*C(t)-Y*S(t)),560-99*Z)
x.stroke()

Apr 22 2020 10:50 PM UTC

}// 140/140

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3D Thomas #Attractor

u/BrutPitt

Very shrinked code from glChAoS.P #Tomas formula: https://www.michelemorrone.eu/glchaosp/dtAtt…
u/tomxor

woah
u/BrutPitt

Thanks to KilledByAPixel's rotation technique in his Lorenz dweet
u/KilledByAPixel

👍

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veubeke

remix of d/18403 by u/BriSeven

function u(t) {

t?(A=X+C(R=Math.random()*99)*10)*A+(B=Y+S(R)*10)*B<9e4&&(X=A,Y=B):X=Y=0
x.fillStyle=`hsl(${t*6},50%,50%)`
x.fillRect(X+960,Y+540,10,10)

Apr 22 2020 10:12 AM UTC

}// 135/140

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Random Walk #circlechallenge

u/donbright

absolutely fascinating...
u/donbright

i let it run for an hour or two and it filled up almost the whole circle, its very interesting

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iznax

function u(t) {

for(i=400;i--;)with(c[i]=t?c[i]:{X:i/7,Y:i,h:5,y:7}){X+=h,Y+=y
M=X*X+Y*Y
D=M>16e4?(X*h+Y*y)*2/M:0
h-=X*D
y-=Y*D
x.fillRect(960+X,540+Y,9,9)}

Apr 22 2020 4:00 AM UTC

}// 140/140

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Do Light Rays Bouncing In A Circle Qualify? #circlechallenge

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BriSeven

function u(t) {

X=(t%1)*600-300,Y=t*10-300
if(Math.sqrt(X*X+Y*Y)<300)x.fillRect(X+950,Y+540,10,10)

Apr 22 2020 2:49 AM UTC

}// 82/140

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#circlechallenge

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