Dweets awesomed by u/taupelink

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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KilledByAPixel

remix of d/15354 by u/KilledByAPixel

function u(t) {

for(i=99;i--;)for(j=0;j<9;x.clearRect(i*T,S(i)*650,5,!j*5,x.fillRect(i*T,j++?60*j+500+99*C((i+t*j**3)/9)/j:0,T=20,2e3)))x.fillStyle=R(j*25)

Aug 11 2019 5:36 AM UTC

}// 139/140

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Alien #Landscape with Stars

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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) {

t||(P=[2],n=2);f=X=>P.reduce((s,q)=>s|!(X%q),0);n>2&&f(n)||(P.push(n),x.fillText(n,(n%100)*19,10+10*(n/100|0)));n++

Aug 11 2019 3:28 AM UTC

}// 116/140

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List of #prime #primes, stored in an array. Best in fullscreen view.

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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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taupelink

remix of d/14962 by u/katkip

function u(t) {

c.width*=1;for(j=45;j--;){for(i=3;i--;)x.fillStyle=['navy','#900'][j%2],x.beginPath(),x.arc(i*960,1540,30*j,t*2+4+j,t*2+4.5+j),x.fill();}

Aug 11 2019 12:14 AM UTC

}// 137/140

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Adding a second color to https://www.dwitter.net/d/14962 , but mostly I want to draw attention to the original. Please go to the original and click Awesome!

u/katkip

Thx

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taupelink

remix of d/15376 by u/taupelink

function u(t) {

r=(X,y)=>(Math.random()*X|0)*y;x.globalAlpha=.7;x.fillStyle=['#000','#0F6','#F3C'][r(3,1)];x.fillRect(r(240,8),r(135,8),r(60,8),r(34,8))

Aug 11 2019 12:03 AM UTC

}// 136/140

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Screen is broken up into 8x8 blocks, for less zig-zaggy intersections.

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taupelink

remix of d/15101 by u/taupelink

function u(t) {

r={valueOf:Math.random};h=256;x.globalAlpha=.7;x.fillStyle=['#000','#03F','#F30','#FC0','#0F3'][(r*8|0)%5];x.fillRect(r*2e3,r*1e3,2*r*h,r*h)

Aug 10 2019 11:44 PM UTC

}// 140/140

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d/15376

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taupelink

remix of d/15374 by u/taupelink

function u(t) {

c.width=320;f=(X)=>X?f(X/B|0)+"0123456789ABCDEF"[X%B]:'';k=t?k+1:8;l=k>>3;for(B=17;--B>1;)
x.fillText(B,0,10*B),x.fillText(f(l,B),30,10*B)

Aug 10 2019 9:56 PM UTC

}// 138/140

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Base 2-16 expansions. I, uh, forgot about the parseInt function :)

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taupelink

remix of d/14804 by u/taupelink

function u(t) {

L=X=>X?1+L(X/10|0):0;c.width=80;n=0;f=X=>X?(n++,f(X>>1)+X%2):'';k=t?k+1:8;x.fillText(l=k>>3,70-5*L(l),10);x.fillText(f(l),70-5*n,20)

Aug 10 2019 9:45 PM UTC

}// 132/140

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base-2 expansions, right-justified (more or less)

dwitter.net | taupelink (50773)