Dweets by u/f8f82804

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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f8f82804

function u(t) {

π=Math.PI;for(i=99;i--;x.fillRect(960+500*S(π*t-i/77),540+500*C(2*t+i/64),32,32))x.fillStyle=`hsl(${t+(i+t)**(S(t/2)-.7)}turn ${i/3+60}%50%`

Aug 27 2018 12:50 AM UTC

}// 140/140

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f8f82804

function u(t) {

with(x)f=d=>d--&&(fillRect(0,0,3,1),rotate(a=S(t)/9),translate(0,-d),f(d),translate(0,d),rotate(-a)),t||translate(960,540),rotate(.01);f(48)

Aug 26 2018 11:43 PM UTC

}// 140/140

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u/katkip

It is getting so beautiful after 1 minute

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f8f82804

function u(t) {

t?x.rotate(.01):x.translate(960,540);for(a=s=32;a--+s;c=4+S(t))for(b=s*2;b--+s;x.fillRect(s*a,s*b,s,s))x.fillStyle=`hsl(${c*a^c*b+t} 99%50%`

Aug 26 2018 2:26 AM UTC

}// 140/140

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f8f82804

remix of d/9416 by u/katkip

function u(t) {

with(x)drawImage(c,-16,-10.2,1952,1100),fillStyle=`hsl(${t<<5} 99%50%`,font='15em a',t%1>.01||fillText(s=t|0,960-measureText(s).width/2,638)

Aug 25 2018 6:33 PM UTC

}// 140/140

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f8f82804

remix of d/9413 by u/f8f82804

function u(t) {

x.drawImage(c,-16,-10.2,1952,1100);x.font='218px a';t%1.1>.01||x.fillText('🛤',830,638)

Aug 25 2018 3:05 AM UTC

}// 86/140

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#android remix

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f8f82804

remix of d/9412 by u/f8f82804

function u(t) {

x.drawImage(c,-17,-10.2,1954,1100);x.font='480px a';t%1.1>.01||x.fillText('🛤',720,780)

Aug 24 2018 11:51 PM UTC

}// 86/140

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riding the rails

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f8f82804

function u(t) {

x.font=10*(s=4+t%2)+'em a';x.fillText('🛣',960-s*80,540+s*55)

Aug 24 2018 11:27 PM UTC

}// 60/140

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Road trip!

u/f8f82804

No idea how this will work on other browsers or platforms. It works OK, though a little choppy, on Firefox 61/Linux

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f8f82804

remix of d/9402 by u/katkip

function u(t) {

eval(unescape(escape`硛猽❦楬汓瑹汥❝㵒⠩㭸学㴧晩汬剥捴❝⠵㔪⡴┳㙼〩ⰹ〰⬴〪⡴┲簰⤬ㄶⰱ㈩㭸孳崽✣挰戰㤰〲✻硛晝⠰ⰷ〰Ɒ㴲攳Ɒ⤻景爨椽瀻椭ⴻ硛獝㵠桳氨⑻瀫椥㄰素㤰┵〥怩硛晝⡩ⱃ⡩⤪匨椫琩⨷〰ⰲ㔬㘩`.replace(/u(..)/g,"$1%")))

Aug 24 2018 9:13 PM UTC

}// 136/140

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#beach #waves #footsteps #compressed

u/f8f82804

x[s='fillStyle']=R();x[f='fillRect'](55*(t%36|0),900+40*(t%2|0),16,12);x[s]='#c0b09002';x[f](0,700,p=2e3,p);for(i=p;i--;x[s]=hsl(${p+i%10} 90%50%)x[f](i,C(i)*S(i+t)*700,25,6)
u/katkip

the footsteps are wierd

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f8f82804

function u(t) {

eval(unescape(escape`䜽⡡Ɫ⤽㹢㽇⡢ⱡ╢⤺愻䰽⡡Ɫ⤽㹡⩢⽇⡡Ɫ⤻瀽⡩㴳㤪䵡瑨⹲慮摯洨⥼〩⩩⭩⬴ㄻ焽⬫椪椫椫㐱㭮㵰⩱㭥㴶㔵㌷㭦潲⡤㴱㭤⩥╌⡰ⴱⱱⴱ⤭ㄻ搫⬩㭣㴷㭦潲⠻ⴭ攻挽挪㜥温㭃㵣㭦潲⠻ⴭ搻䌽䌪挥温㭴桲潷⁃`.replace(/u(..)/g,"$1%")))

Aug 24 2018 7:30 PM UTC

}// 139/140

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RSA #crypto #compressed

u/f8f82804

G=(a,b)=>b?G(b,a%b):a;L=(a,b)=>a*b/G(a,b);p=(i=39*Math.random()|0)*i+i+41;q=++i*i+i+41;n=p*q;e=65537;for(d=1;d*e%L(p-1,q-1)-1;d++);c=7;for(;--e;c=c*7%n);C=c;for(;--d;C=C*c%n);throw C
u/f8f82804

Will throw 7 if the decryption works correctly. #slow
u/katkip

it lags so much
u/f8f82804

it should be possible to optimize the modular inversion and exponentiation, but it would probably go over the character limit

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f8f82804

function u(t) {

c.width^=0;with(x){lineWidth=6;translate(960,540);rotate(42*t);fill(arc(0,0,440,0,3));for(i=30;i--;stroke())beginPath(),arc(0,0,15*i,i,i+2)}

Aug 23 2018 11:01 PM UTC

}// 140/140

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Benham's top #illusion -- https://en.wikipedia.org/wiki/Benham%27s_top

u/f8f82804

#opticalillusion

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