Dweets awesomed by u/dongwoo

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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nystrand

function u(t) {

for(c.width|=x[i=frame]=300,d=t?-d:1;i--;i%6||x.lineTo(T+1e3,S+540))S=T,T=x[i]+=d*x[e=i+(i+d)%3-i%3]/123*((e+d+(t&65|t/13.3))%3);x.stroke()

Jul 23 2017 1:10 AM UTC

}// 139/140

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RotatingSpherePatternPrinter

u/alien

wait what is going on here D: , could explain this x[i=frame] and T=x[i] plz
u/alien

How can you add T a numer, isn't T a defined function?
u/iverjo

frame is a number that starts at 0 and increases by 1 for each frame (this is actually a somewhat "hidden" feature in dwitter, and can be used as an alternative to t). T is initially a defined function (by dwitter), but the code in this dweet sets T to something else before a number is added to it. x[i=frame]=300 has the same result as i=frame,x[i]=300 because i=frame returns the new value of i
u/alien

D:!!!! @iverjo thxs
u/13thptr

#d3 #sphere

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dongwoo

function u(t) {

c.width|=0
x.font='4cm a'
x.translate(f=900,f)
g=(h,j,k)=>x.fillText(h,j,k)
g('🐩',-20,80)
x.rotate(Math.abs(S(t*12))*Math.PI/5)
g('🐕',0,0)

Jul 20 2017 1:56 AM UTC

}// 138/140

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u/sigveseb

lol
u/magna

Background music to go with it: https://www.youtube.com/watch?v=ivJrE_Wory0

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James

function u(t) {

for(i=441;i--;)if(!+("肂胺ꗲ阴ꑚꢑ겢뺮ﰂ퐇ﱟ쌥쐐얄镯쿵즀둂뺅貋鯺雝뀟걯肽^".charCodeAt(i/15).toString(2).substr(1)[i%15]))x.fillRect(i%21*44,~~(i/21)*44,44,44)

Jul 18 2017 9:31 PM UTC

}// 137/140

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u/sigveseb

Nice! Is it a valid QR code?
u/stiaje

I scanned it! Goes to x.com ;)
u/stiaje

*spoiler alert*

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dongwoo

function u(t) {

c.width|=0
b=(a)=>x.rotate(a)
b(t*.1)
for(i=3000;i;){b(i*.01);x.fillStyle="hsl("+360*((i/900-t)%1)+",100%,50%)";x.fillRect(0,0,10,i--)}

Jul 18 2017 1:58 AM UTC

}// 135/140

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u/cantelope

love it!
u/Purpzie

Shortened by 9 characters: for(c.width|=0,x.rotate(t*.1),i=3e3;i--;x.fillStyle="hsl("+360*((i/900-t)%1)+",100%,50%)",x.fillRect(0,0,10,i))x.rotate(i*.01)

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Xen

remix of d/2814 by u/the_yuhanna

function u(t) {

x.font='98px t';x.fillText('Xen',918,539);x.fillStyle=`hsla(${t*99},99%,69%,1`;x.drawImage(c,9,9,1911,1001,0,0,1928,1018.9)

Jul 17 2017 11:45 PM UTC

}// 123/140

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tiny tweek from original ;-)

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dzozef

function u(t) {

c.width=640;for(i=0;i<900;i++){a=i%30;y=Math.floor(i/30);x.fillRect(a*10+y*10,180-a*5+y*5-S(((15-a)*(15-a)+(15-y)*(15-y))*0.02+t*5)*16,2,2)}

Jul 17 2017 12:45 PM UTC

}// 140/140

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u/Polyducks

Wow... this is just.... wow...
u/Xen

90byte De-make #2921

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dongwoo

function u(t) {

x.fillRect(0,950,620,c.width|=0)
x.font="6cm a";['🎈','🤡','⛵'].map((e,i)=>{k=(i+2)%3;x.fillText(e,200*i,1750-(t%5>k+1?1:t%5<k?0:t%1)*680)})

Jul 17 2017 5:52 AM UTC

}// 138/140

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u/XMF

I thought you would use integers for this, but they're all floats down here.
u/Polyducks

omg that's an amazing reference.

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dongwoo

function u(t) {

x.textAlign="center";x.textBaseline="middle"
b=(d,e)=>{x.font=e+"1cm a";x.fillText(d,960,540)}
for(i=9;i;)b((i+t|0)%2?'💙':'❤️',i--)
b('🐝')

Jul 17 2017 12:24 AM UTC

}// 138/140

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u/XMF

See the bee in the center? That's me, little bee!😍
u/cantelope

hm. doesn't seem to work right in my chrome https://lookie.ml/uploads/kRDhV.jpg
u/dongwoo

Ah, damn. Wrote it in Safari.
u/dongwoo

Turns out Chrome can't render emoji above a particular size. I'll have to revisit this.

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Xen

remix of d/2868 by u/CodeUh

function u(t) {

c.width=1920;x.beginPath();x.translate(900,550);x.scale(9,9)
for(i=0;i<69;)x.lineTo(I=50*C(t*i/3),I*S(t*i++/3));x.stroke()

Jul 16 2017 9:39 PM UTC

}// 122/140

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u/innovati

infinite scribbles ∞✍️
u/Xen

its glitchy superhero eyes, they fall asleep then a thunderstorm wakes them lol

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Xen

remix of d/2180 by u/aemkei

function u(t) {

for(i=W=c.width=2e3;i--;x.fillRect(W*(T(i)+s*t)%W,540+i*S(s*W),9,9))s=69/i

Jul 16 2017 7:51 PM UTC

}// 74/140

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u/innovati

entering hyperspace! 🚀✨
u/Xen

Destination: Terror!

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