Dweets awesomed by u/donbright

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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catpants

function u(t) {

c.width=1920; /* clear the canvas */
  for(i=0;i<1920;i+=.1)

  x.fillRect(i, 540+S(i+t)*538, 4, 4)

Jan 5 2018 2:16 AM UTC

}// 100/140

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u/ximavus

golfed to 63 chars: x.reset() for(i=2e4;i--;)x.fillRect(i/9,540+S(i/10+t)*538,4,4)

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rippedspine

function u(t) {

c.onmousemove=e=>T=S(e.x*.1)
for(w=i=c.width|=0,q=Math.random;i--;b=300*(1-q()**2),d=6.3*q(),x.fillRect(w/2+b*C(d)*T,w/4+b*S(d)*T,4,4));T|=1

Jan 5 2018 1:01 AM UTC

}// 140/140

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oh how i regret not taking more math in school, this took a ridiculous amount of time and i'm still not satisfied about how the dots are distributed. threw in a mouseover to spice it

u/katkip

141/140?

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rle

function u(t) {

for(i=c.width=920,n=q=w=e=0.01,m=8/3,h=t/990;i--;)Q=9*(h+w-q),W=q*(h+28-e)-w,E=q*w-m*e,q+=Q*n,w+=W*n,e+=E*n,x.fillText(0,400+q*15,250+w*9);

Jan 4 2018 11:59 PM UTC

}// 139/140

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Strange Attractor

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sigveseb

remix of d/5540 by u/veubeke

function u(t) {

M=576
for(i=M*2;i--;x.fillRect(i/24<<5,i%24<<5,32,32,x.fillStyle=r<0|r>=1?'red':R(_=r*256,_,_)))r=i>=M?
Math.random():
(t+i)**4%1

Jan 4 2018 11:51 PM UTC

}// 129/140

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Veubeke's random challege

u/magna

Looks random to my human eyes
u/iverjo

Seamless!
u/sigveseb

#random

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veubeke

remix of d/5540 by u/veubeke

function u(t) {

M=576
for(i=M*2;i--;x.fillRect(i/24<<5,i%24<<5,32,32,x.fillStyle=r<0|r>=1?'red':R(_=r*256,_,_)))r=i>=M?
Math.random():
i*i*t/M%1

Jan 4 2018 11:16 PM UTC

}// 128/140

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Almost random ;)

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veubeke

function u(t) {

M=576
for(i=M*2;i--;x.fillRect(i/24<<5,i%24<<5,32,32,x.fillStyle=r<0|r>=1?'red':R(_=r*256,_,_)))r=i>=M?
Math.random():
i/M

Jan 4 2018 11:14 PM UTC

}// 122/140

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This is a template to play with drop-in replacements for Math.random(). Enter code in the last line that uses the existing variables to produce values in the range [0,1). Red squares will appear if values are out of range.

Show more comments…
u/veubeke

A bad example :) https://www.dwitter.net/d/5541
u/sigveseb

A bit on the long side, but looks good: https://www.dwitter.net/d/5545
u/magna

Reminder that we can now link to dweets using the short notation: d/5545
u/joeytwiddle

Try: i**t%M/M One issue with sine/cosine is more black+white than grey: .5+S(i**t)/2
u/f8f82804

#tool #template
u/joeytwiddle

#random #challenge

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wackytman

remix of d/5538 by u/wackytman

function u(t) {

c.width|=i=300
x.lineWidth=.5
while(--i)x.arc(600,600,500-S(i),i*S(t),i)
x.stroke()

Jan 4 2018 11:04 PM UTC

}// 83/140

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fuck knows 2

u/sigveseb

neat

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wackytman

function u(t) {

c.width|=i=300
x.lineWidth=.5
while(--i)x.arc(600,600,500-S(i),i,S(t)*-i)
x.stroke()

Jan 4 2018 11:03 PM UTC

}// 84/140

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Fuck knows

u/DirtyDan

A crystal ball :O
u/joeytwiddle

Nice! I like it slow: S(t/99) And 960,540 if you want to centralise it.

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RomanW

function u(t) {

for(f=0,a=b=k=2.5465,z=92;f<100&&!t;f++,n='䑄䑄쳌ೌ䐠⦆䌢쨀ㇽࡤ찀팬䑎킀㏝̈㳌찳䑌묀㮻㌳㏝川ෝ'.charCodeAt(f/4)>>f%4*4&15,x.lineTo(a+=z*C(n/k),b+=z*S(n/k)))x.stroke()

Jan 4 2018 9:30 PM UTC

}// 140/140

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Each line segment can have 16 directions (4 bits). The 100 line segments are encoded in 25 UTF-16 characters. Very ego-centric result, i know, i know :)

u/sigveseb

Ooh, very nice indeed!

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myxoh

function u(t) {

k=(a=255)=>Math.random()*a;d=(a,b)=>x.fillRect(a%2e3,b%2e3,10,10);x.fillStyle=R(k(),k(),k(),k(1));d(t*1e2,T(t)*1e2+5e2);d(k(2e3),k(2e3));

Jan 4 2018 9:26 PM UTC

}// 137/140

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Link to the Sine version https://www.dwitter.net/d/5531

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