Top dweets by u/firegodjr

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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firegodjr

function u(t) {

for(i=100;i--;x.beginPath())x.fillStyle=`hsl(${i+t*30},99%,${110-1*i}%)`,x.arc(960-200*C(i+t),500-5*i*S(i+t),20,0,2*Math.PI),x.fill()

Apr 18 2018 7:05 PM UTC

}// 133/140

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A portal to another realm? 🤔

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firegodjr

remix of d/7650 by u/firegodjr

function u(t) {

c.width=1920
for(y=41;--y;){x.fill();x.beginPath();for(w=33;--w+1;){x.lineTo(60*w,S(t+y/5+w/2)*50+30*y-75)}}

Apr 16 2018 5:30 PM UTC

}// 108/140

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Diet Sinewave Pattern, now with only 108 characters! (Had some leftovers from my original dweet idea that were clogging up the charcount, plus optimized the loops and positioning)

Show more comments…
u/BalintCsala

98 chars: for(c.width|=y=40;y--;x.fill(),x.beginPath())for(w=33;w--;x.lineTo(60*w,S(t+y/5+w/2)*50+30*y-75));
u/firegodjr

Thanks! I'm a bit new to reverse loop iteration, so I didn't think of replacing the --w+1. How does the c.width|=y reset the width properly, though?
u/BalintCsala

It sets it to 1960
u/iverjo

Cool! Deserves more attention
u/magna

98 chars: for(c.width|=y=41;--y;x.beginPath(x.fill()))for(w=33;--w+1;)x.lineTo(60*w,S(t+y/5+w/2)*50+30*y-75)
u/magna

Ah, u/BalintCsala beat me to it... :)
u/jylikangas

96 chars if you replace --w+1 with w--

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firegodjr

function u(t) {

c.width|=a=.52
r=200
with(x)for(i=13;--i;beginPath())j=t+i,lineWidth=12-j%12,arc(S(l=a*i)*r+900,C(l)*r+500,80,v=-l-2*a,v+j%12*6.28),stroke()

Aug 15 2019 1:04 AM UTC

}// 140/140

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First attempt at recreating https://twitter.com/beesandbombs/status/1161…

u/firegodjr

#beesandbombs

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firegodjr

remix of d/8639 by u/pythech

function u(t) {

c.width|=0
for(x.translate(960,540),i=200;i-->0;)x.lineTo(5*i,0,20*C(i*.9)+30,0,9),x.rotate(-Math.PI*2*.618+t/200)
x.stroke()

Jun 20 2018 1:20 PM UTC

}// 125/140

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Line Nova

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firegodjr

function u(t) {

c.width=1920
x.lineWidth=.1
for(i=0;i<900;i++,x.stroke(),x.beginPath())for(j=0;j<2;j++)
x.lineTo(1920*j,500+S(t+i+j*S(t/2)*3)*300)

Jun 12 2018 3:03 PM UTC

}// 130/140

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Smooth curves from straight lines

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firegodjr

function u(t) {

b=document.body
b.style='text-shadow:5px 5px 5px gray'
b.style.transform='rotate('+S(t)*90+'deg)'
b.innerHTML="<h1>Breaking the rules</h1>"

Jun 8 2018 4:22 PM UTC

}// 140/140

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firegodjr

function u(t) {

x.globalCompositeOperation="difference"
x.fillStyle="#f00"
x.fillRect(0,0,1,1)
x.drawImage(c,1,0)
x.drawImage(c,0,1)

Sep 29 2021 6:57 PM UTC

}// 116/140

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Recurrence

u/aleamb

#recursion #sierpinski

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firegodjr

function u(t) {

k=t*60%2|0
for(i=9;i--;)x.fillStyle=R(k?255:i*28,k?i*28:255,180),x.fillRect(960+S(t+i/2)*960,k?1071:0,50,9)
x.drawImage(c,0,k?0:9,1920,1071)

Sep 21 2021 6:39 PM UTC

}// 140/140

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Horizon

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firegodjr

remix of d/10709 by u/New_Core

function u(t) {

s=c.style;s.backgroundBlendMode='lighten';for(b=[i=9];i--;s.background=b)b[i]=`repeating-radial-gradient(${S(t+i)+3}%${i}%,#fff,#011 599%)`

Oct 29 2018 4:15 PM UTC

}// 139/140

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firegodjr

remix of d/10338 by u/firegodjr

function u(t) {

x.fillStyle='red'
x.globalCompositeOperation='difference'
for(i=4;i--;)x.drawImage(c,i%2?o=960:0,i/2|0?v=540:0,o,v)
x.fillRect(S(t)*o,v,v,v)

Oct 12 2018 4:39 PM UTC

}// 140/140

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Phosphor Glitch

u/donbright

fascinating

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