Dweets awesomed by u/PotatoImaginator

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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jylikangas

function u(t) {

with(x)for(i=1;i++<32;beginPath(fill()))for(j=8;j--;arc(X=960-C(t)*250,X/2,2e3/(i-t*8%2),a=133*j,a))fillStyle=R(v=i%2*64,i*9*S((t%7)**2),v)

Nov 27 2018 4:14 PM UTC

}// 139/140

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There is a light at the end of a tunnel

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cantelope

function u(t) {

eval(unescape(escape`儽焽㹱┱〭㐮㔻景爨椽眽⡣⹷楤瑨簽〩⼲㭩ⴭ㭸⹦楬汒散琨眫儨椩⼨娽⡧⵴┱⤪㠫㠩⩷⴨猽匨⡧⭴簰⤫琩⩷⽚⤯㈬㔴〫儨椯㄰簰⤯娪眭猯㈬猬猩⥸⹦楬汓瑹汥㵠桳污⠤笴㌲⨨朽椯㄰ぼ〩⬷㔪⡴簰⥽ⰹ㤥ⰵ〥Ⱞ㍠`.replace(/u(..)/g,"$1%")))

Nov 20 2018 11:20 PM UTC

}// 140/140

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u/katkip

Oh wow thats cool. #infinite

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jylikangas

function u(t) {

for(c.width=W=i=512,t*=w=99;--i;x[f](225-z+(t--&2?z*2:t&9?0:z)+S(t/w)*i,w+z,z/=7,z))z=2e3/i,x[f='fillRect'](!x[f](i,0,S(t/W),w),w+z/32,W,.5)

Nov 20 2018 4:55 PM UTC

}// 140/140

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I drove all night (and day)

u/cantelope

amazing! #road #synthwave
u/pavel

The backdrop is glitched on mobile Safari.
u/jylikangas

137b: for(c.width=W=i=512,t*=w=99;--i;x[f](225+(t--&2?z:t&9?-z:0)+S(t/w)*i,w+z,z/=7,z))z=2e3/i,x[f='fillRect'](!x[f](i,0,S(t/W),w),w+z/32,W,.5)
u/iverjo

Wow!
u/taupelink

#scene

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rnbw

function u(t) {

c.width^=0;x.fillStyle='#5b9';for(j=0;j<12;j++)for(i=0;i<22;i++){x.beginPath(x.fill(x.arc(99*i,99*j,S(t*3+i*3.14+j*3.14)*20+49,0,7)))}

Nov 16 2018 7:32 PM UTC

}// 134/140

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oooooh, circles

u/Xen

Nice
u/sigveseb

cool style

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pavel

function u(t) {

with(x)for(k=n=j=255;j--;k=2,fill())for(beginPath(fillStyle=R(T=(t^k)%2*128,T,i=4));i--;)arc((j%9-t%1)*n+T,(j>>4)*n+T,64*k,a=(i-t%1)*11/7,a)

Nov 13 2018 2:29 AM UTC

}// 140/140

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u/yonatan

arc?!
u/anotherkitten

oh you sly dog very well done
u/pavel

:)
u/jylikangas

Very cool! You can save 3 bytes by removing the unnecessary %1 from t when calculating a and also doing <<7 instead of *128. If someone is wondering how this works using a+1 instead of a at the end may help. :)
u/katkip

#beesandbombs
u/pavel

Removing %1 at the end breaks the animation on my iPhone.

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magna

remix of d/10830 by u/magna

function u(t) {

eval(unescape(escape`挮睩摴栽㤶〻景爨樽㘰㭪ⴭ㬩景爨椽㈴〻椭ⴻ砮晩汬剥捴⡩⨴ⱪ⨹ⰴⰹ⤩昽椫琪㘰Ɱ㵔⠰簨樫晞昭権⼨琯㈫㘩⤬砮晩汬却祬攽恨獬⠤笱㈰⩩紬㤹┬⑻⠲⭩┳⤪渪㄰┵ぽ╠`.replace(/u(..)/g,"$1%")))

Nov 5 2018 1:41 AM UTC

}// 122/140

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Original patterns and RGB modulation by u/tomxor, CRT by me, compressed using d/9207

u/tomxor

Yeah! :D
u/tomxor

Oh now you got me hooked, i'm doin more crt

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prplz

function u(t) {

for(c.width|=i=9,x.font='4cm"';i--;)x.fillText(i&1?'🎃':'👻',X=500+i*100+S(2*t)*300,500+C(i+5*S(2*t))*100)

Oct 31 2018 8:31 AM UTC

}// 104/140

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it's halloween i guess

u/iverjo

#halloween

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anotherkitten

remix of d/10600 by u/anotherkitten

function u(t) {

for(t+=i=17;i--;x.beginPath(x.fill()))p=i+t%1,x.fillStyle=`hsl(${(p-t)*9} 50%${i-t&1?40:60}%`,x.arc(960+C(p+t)*p*p,540+S(p+t)*p*p,5*p*p,0,7)

Oct 22 2018 4:11 AM UTC

}// 140/140

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odd spiral

Show more comments…
u/veubeke

wow
u/joeytwiddle

I really like these colours
u/pavel

groovy!
u/DataMeta

Niiice!
u/aleamb

yeah! cool!
u/pavel

You use a trick that does not work on iPhone. In the HSL call you need a space between S and L.
u/veubeke

@pavel: here’s a version that works in Safari d/10641

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pavel

remix of d/10356 by u/pavel

function u(t) {

for(x.fillRect(0,0,X=w=c.width=600,w);X-=6;)for(r=X**2.3%w,Y=h=r*t&504;Y;x.fillText(r*Y&1,X,Y-=8))x.fillStyle=R(b=Y-h||w,250+Y-h,b)

Oct 15 2018 12:05 AM UTC

}// 131/140

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#matrix #rain v3 shorter, faster, and with variable speed droplets

u/joeytwiddle

Let the white burn briefly: b=250+(Y-h)*6

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yonatan

function u(t) {

a='fillRect'
b='clearRect'
n=C(t/2)>0
x[n?b:a](0,0,2e3,2e3)
for(i=9;i--;x[n?a:b](960+(i-4-n/2)*d,540-d,d/2,d*2))d=330-C(t)*220

Oct 11 2018 9:19 AM UTC

}// 126/140

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#default

Show more comments…
u/katkip

this
u/katkip

is one
u/katkip

of the best defaults
u/katkip

I have ever seen
u/katkip

#illusion
u/magna

Dave would be proud.
u/joeytwiddle

#infinite #loop

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