Dweets awesomed by u/joeytwiddle

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: #Food

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sarahkittyy

function u(t) {

c.width^=0;typeof v!='object'?v=[]:v.push([960,1e3,C(t*9)*9,10]);for(p of v){p[0]+=p[2];p[1]-=p[3];p[3]-=0.06;x.fillRect(p[0],p[1],9,9)}

Aug 11 2019 4:45 AM UTC

}// 136/140

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particles~

u/aleamb

nice!
u/robbyg

A 105b version: c.width^=0 t||(v=[]) v.push([960,1e3,C(t*9)*9,10]) v.map(p=>x.fillRect(p[0]+=p[2],p[1]-=(p[3]-=.06),9,9))

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taupelink

remix of d/15380 by u/taupelink

function u(t) {

g=(a,b)=>b?g(b,a%b):a;f=()=>Math.random()*1e7|0;t||(m=n=0);n++;g(f(),f())-1||m++;x.fillRect(n%1920,1080*(1-m/n),1,1);throw m/n

Aug 11 2019 4:25 AM UTC

}// 126/140

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If you take two random integers of at most 7 digits each, what is the probability that they are relatively prime? This simulation suggests somewhere around 60%

u/taupelink

In the graph, the x-axis shows number of trials, modulo 1920 (i.e. with wraparound). The y-axis shows % of trials with GCD 1, with 0% at bottom and 100% at top.
u/taupelink

After a little Web searching: Under more general conditions, the precise answer appears to be 6/π^2, or about .608. See, e.g., https://www.cut-the-knot.org/m/Probability/T…
u/aleamb

#math

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taupelink

remix of d/14804 by u/taupelink

function u(t) {

f=X=>{for(i=2;i*i<=X;i++)if(X%i==0)return i+'*'+f(X/i);return X};frame%30||(c.width=200,q=f(k=Math.random()*1e9|0),x.fillText(k+'='+q,5,60))

Aug 11 2019 12:34 AM UTC

}// 140/140

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Factorization of a random integer into #prime products

u/aleamb

awesome! #math #numbers #primes

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taupelink

function u(t) {

g=(a,b)=>b?g(b,a%b):a;f=()=>Math.random()*1e7|0;(frame-1)%30||(c.width=200,m=f(),n=f(),x.fillText(`GCD(${m},${n})=${g(m,n)}`,15,60))

Aug 11 2019 12:29 AM UTC

}// 132/140

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GCD of two random numbers

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tomxor

remix of d/15355 by u/tomxor

function u(t) {

eval(unescape(escape`挮獴祬攽❦楬瑥爺楮癥牴⠱✻景爨愽戽瀽㌮ㄴⱩ㴲攴㭩ⴭ㭡⬽⡲ⵡ⭢⩓⡡⩰⤩⼴Ɫ⬽⠰ⵡ⩢⭃⡡⩰⤩⼴⥩☱☦砮晩汬剥捴⠹㘰⬶㐰⩓⡙㵢⬲⤪䌨堽愯⸳⤬㠰〫㘴〪䌨天Ⱞㄬ䌨堫⸵⤪⨮㤫⸱籼⸱Ⱳ㴨楞愪椯琩┲⤻`.replace(/u(..)/g,"$1%")))

Aug 10 2019 11:46 PM UTC

}// 140/140

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M Class ? #planet #space

Show more comments…
u/tomxor

#waitforit
u/aleamb

nice!
u/13thptr

amazing! #d3 #shading
u/tomxor

Thanks :)
u/magna

O M F G
u/moto

great
u/katkip

looks good

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taupelink

remix of d/15365 by u/taupelink

function u(t) {

c.width=500;p=[23,29,31,37][(frame>>5)%4];m=1;for(n=p,o=1;--n;x.fillText(m,30+12*m,7*o++))m*=n,m%=p,x.fillText(o-1?'x'+n+'≡':p+'-1=',0,7*o)

Aug 10 2019 7:19 PM UTC

}// 139/140

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Illustration of Wilson's theorem. For any prime p, (p-1)! is congruent to p-1 mod p,

u/joeytwiddle

😯🥴🤤

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tomxor

remix of d/15329 by u/tomxor

function u(t) {

for(a=b=0,i=1e4*(t<8);i--;x.fillRect(a*640-160,b*640+640,1,.05))
r=0|4*Math.random(),
a+=.3*(r-a+b*S(a*3.14)),
b+=.3*(0-a*b+C(a*3.14))

Aug 10 2019 11:19 AM UTC

}// 134/140

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Chaos Photographer, Pic 2

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tomxor

remix of d/15357 by u/tomxor

function u(t) {

eval(unescape(escape`景爨愽戽〬椽ㅥ㐻椭ⴻ砮晩汬却祬攽恈卌⠤筡⨳㘰紬㤹┬㌳┩怬砮晩汬剥捴⠹㘰⬳㈰⩓⡡⨳⤪匨截㐩ⰵ㐰⬳㈰⩃⡡⨳⤬ㄬ⸰㔩⥲㴰簴⩍慴栮牡湤潭⠩ⱡ⬽⸴⨨爭愫截匨愪㌩⤬戫㴮㐪⠰ⵡ⩢⭃⡡⨳⤩`.replace(/u(..)/g,"$1%")))

Aug 9 2019 9:02 PM UTC

}// 134/140

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Colour Marbles

u/danny@hille.dk

#underrated

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tomxor

remix of d/12820 by u/tomxor

function u(t) {

for(a=b=0,i=1e4;i--;x.fillRect(960+480*S(a*3)*S(b*7),540+480*C(a*3),1,.1))r=0|2*Math.random(),a+=.2*(r-a*S(b*3+C(a*3+C(a*3)))),b+=.4*(r-a*b)

Aug 9 2019 6:57 PM UTC

}// 140/140

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Chaos Planet #planet #space

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KilledByAPixel

remix of d/15260 by u/KilledByAPixel

function u(t) {

for(w=i=99;i--;)for(j=0;j<9;x.fillRect(i*20,j++?w*j+w+w*C(q/9)/j+59*C(q/3.9)/j:0,20,3e3))q=(j*w+i+t*j**3),x.fillStyle=R(9+j*40%w,j*20,w-j*9)

Aug 9 2019 6:28 PM UTC

}// 140/140

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#landscape #panorama #uncompressed

u/katkip

nice
u/KilledByAPixel

Code explanation at http://frankforce.com/?p=6835

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