Dweets awesomed by u/Odog8

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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gambit

function u(t) {

c.width=1920 
for(i=0;i<100;i++)
{x.fillStyle=R(C(t)*200,C(i)*200,S(i)*200)
x.fillRect(960+200*C(t+i),540+200*S(t+i),25*C(i),25*S(t))
}

Jan 8 2020 9:02 AM UTC

}// 135/140

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my first

u/Odog8

Welcome! and congrats, thats a nice first

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pavel

remix of d/11225 by u/veubeke

function u(t) {

T<150&&!D.some(d=>Math.hypot(d.p-p,d.q-q)<d.T+T)?x.beginPath(x.fill(x.arc(p,q,T+=2,0,7,0))):(D=t?[...D,{p,q,T}]:[],p=t**7%2e3,q=p*p%1e3,T=0)

Jan 8 2020 6:07 AM UTC

}// 140/140

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Blots

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tresspass

function u(t) {

t?0:a=0;x.strokeStyle=S(a/2)>0?"BLACK":"WHITE";a+=.01;x.beginPath();x.moveTo(960,540);x.lineTo(960-2000*C(a),540-2000*S(a));x.stroke();

Jan 8 2020 2:11 AM UTC

}// 135/140

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First dweet. Be nice ;)

u/Xen

pretty much perfect only 3 tiny golfs i see, very nice first
u/Odog8

Welcome!
u/katkip

#waitforit for full effect

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pavel

function u(t) {

for(c.width|=i=4;i--;x.fill(x.arc(96*(8+i%2*4+2*o+C(a=Math.PI*(o?q:-q))),540+96*S(a),96,0,7)))q=t+3*(i>1),x.beginPath(o='001221'[~~q%6]-1)

Jan 7 2020 11:54 PM UTC

}// 138/140

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Points

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u/pavel

Credit https://www.reddit.com/r/loadingicon/comment…
u/tylertoomey

Can you explain how you are declaring your variables? specifically in "8+i%2*4+2*o+C" you reference 'o' and 'C' before they have even been declared -- I think.
u/pavel

for(i=9;i--;/*code here*/)/*runs after code here*/
u/ivylab

Exactly the other way around, isn't it? First the code after the bracket runs and then the code in the brackets. Your declaration is behind them. c.width=1e3;for(i=9;i--;x.fillStyle='red')x.fillRect(112*i,0,100,1000) shows that too.
u/sigveseb

Or in other words, a for loop for(A; B; C) D; will run the different parts in this order: A B D C B D C B D C .. B
u/ivylab

Exactly what I think and meant. Well written @sigveseb
u/joeytwiddle

beginPath, arc and do-si-do 🕺💃 🎻
u/UEZ

#dance

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KilledByAPixel

remix of d/13867 by u/KilledByAPixel

function u(t) {

t?c.width=99:X=Y=W=V=1
onmousemove=E=>A=E.y/7
x.fillRect(X+=V=X>96|X<9&X>4&V<0&Y>A-4&Y<A+9?-V/.96:V,Y+=W=Y%52?W:-W,4,4)
x.fillRect(4,A,5,9)

Jan 6 2020 9:24 PM UTC

}// 139/140

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Solo Pong - Use Mouse To Play #game #interactive #pong #uncompressed

u/katkip

awesome!
u/Coalshork

on old systems this would be called handball and be a seperate game lol

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Odog8

remix of d/17079 by u/Odog8

function u(t) {

d=2*C(t)**2;c.width=900;for(b=0;b<70;b+=.02)l=[100*S(4.01*b/3+t)*S(b),b],l=[l[0]*C(l[1]),l[0]*S(l[1])],x.fillRect(l[0]+450,l[1]+230,d,d)

Jan 6 2020 2:13 AM UTC

}// 136/140

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fading le ribbon

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Odog8

function u(t) {

c.width=1920;for(b=0;b<40;b+=0.02)l=[3*S(4.01*b/3+t)*S(b),b],l=[l[0]*C(l[1]),l[0]*S(l[1])],x.fillRect(100*l[0]+960,100*l[1]+540,6,6)

Jan 6 2020 1:30 AM UTC

}// 132/140

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le ribbon

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pavel

function u(t) {

for(c.width=640,i=8;i--;x.stroke())x.beginPath(R=3+12**.5*C(t+=22/21)),j=i<2,x.arc(320+150*(2*!i-j),180+260*S(t)*!j/R,130/(j||R*R)**.5,0,7)

Jan 4 2020 12:23 AM UTC

}// 139/140

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Eight kissing circles

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u/pavel

These are the circles e^is, 1/3*e^is, 1/3*e^is + 2/3*e^i(n*pi/3+t) for n=0..5 transformed via the conformal map (3^.5+z)/(1+3^.5*z)
u/yonatan

Fascinating, but incomprehensible :)
u/yonatan

my best guess: z in the map is coords as a complex number, i is sqrt(-1), e is euler's const? no idea what's s
u/pavel

You got it. s is just a parameter, a real number. If you plot e^is in the complex plane you get a circle (https://en.wikipedia.org/wiki/Euler%27s_form…). Then that map magically moves and resizes things but keeps circles as circles.
u/pavel

This d/17068 is what the circles look like before the mapping. The mapping moves the inner one sideways, outside of the outer circle, and resizes it to be the same size, meanwhile the moving circles keep touching.
u/pavel

Check out https://jsfiddle.net/umL3t1he/9/ on desktop
u/katkip

#apolloniangasket

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katkip

function u(t) {

z=q=>(Math.random()*99)|0
if(!t){d=[];for(i=99;i--;)d[i]=i}
for(q of d)x.fillRect(t*169,S(q+t)*299+540,3,3),d[q=z()]=(d[z()]+d[q]*80)/81

Jan 3 2020 11:23 AM UTC

}// 136/140

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fast average #sync #waitforit

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KilledByAPixel

remix of d/14082 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𥐽𝀳𜐻𭱩𭁨𚁸𚑦𫱲𚁦𫱮𭀽𘠷𜡥𫐠𪑭𬁡𨱴𘠬𩡩𫁬𤱴𮑬𩐽𙰣𜐰𜰲𙰬𩡩𫁬𥁥𮁴𚁚👩🐲𜀲𜀬𞐬𜑥𜰬𜐹𜀰𚐻𪐭𛐻𭀫👩𙑕🰰𞠹𚑱👴𙐴𛁑👚𚠨𭀾🠲𚐬𥀽𬐪𥐪𤰨𪐩𛁣𫁥𨑲𤡥𨱴𚁓𚁩𚡩𚐪𥀫𤐥𞐶𝰫𥐬𥐫𤐥𥐫𠰨𪐪𪐩𚡔𛑱𚠳𞐹𚱱𚡱𚡕𛁦🐴𚱩𙐵𛁦𚐻`.replace(/u../g,'')))

Dec 31 2019 3:19 PM UTC

}// 139/140

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Happy new year!

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u/iverjo

Awesome!
u/katkip

awesome
u/lionleaf

Happy 2020 everyone! Awesome dweet! #fireworks #newyears #nye
u/Qwerty

What do you use to generate those special characters?
u/KilledByAPixel

Compress up to 194 characters into a dweet! 👉 https://www.dwitter.net/d/14282
u/username

u/Qwerty it is d/11852
u/KilledByAPixel

you can replace eval with throw to see the code

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