Dweets awesomed by u/fourier.space

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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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

show FPS hide FPS share fullscreen

sandromiccoli

remix of d/5677 by u/sigveseb

function u(t) {

x.globalCompositeOperation='xor';x.beginPath();x.arc(960,540,Math.abs((T(t/2+99)+1.3)*100),(C(t/5)+1.1)*3,(C(t/4.0)+1.1)*3);x.fill()

Jan 7 2018 4:30 AM UTC

}// 132/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share fullscreen

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

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Strange Attractor

show FPS hide FPS share 2 remixes fullscreen

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

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

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

show FPS hide FPS share fullscreen

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

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

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!

show FPS hide FPS share 1 remix fullscreen

coderkid

function u(t) {

s=frame%3?0:255;x.fillStyle=R(s,s,s);if(!t)x.translate(c.width/2,c.height/2);for(i=0;i<78;i++){x.fillRect(i*14,0,9,9);x.rotate(.1+t);}

Jan 4 2018 8:21 PM UTC

}// 134/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share fullscreen

eviltoad

remix of d/5511 by u/eviltoad

function u(t) {

for(i=0;i<455;i++){x.strokeStyle=R(i*C(t+i),i,i*S(t-i))
x.beginPath()
r=79+2<<t%4
w=i+t/9
x.arc(i+r*S(w),i+r*C(w),i+i*C(t),0,7)
x.stroke()}

Jan 4 2018 6:37 PM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share 2 remixes fullscreen

jbl

remix of d/5314 by u/jbl

function u(t) {

c.width|=i=300
x.lineWidth=.1
while(--i)q=19+S(t/6)/28*i,x.arc(S(q/3)*i+q*60,(C(q*S(t/2))+4)*i/2+200,(C(q)*60+200)*S(i/96),0,7)
x.stroke()

Jan 4 2018 2:37 AM UTC

}// 138/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Show more comments…
u/magna

Nice!
u/nystrand

cool!
u/rikardlindstrom

love it!
u/iverjo

It looks organic
u/lionleaf

#balloon #organic #floppy
u/leonarven

Damn that looks impressive, still such simple! :)
u/skeletonNatte

Somehow pretty unsettling

show FPS hide FPS share fullscreen

p01

function u(t) {

for(c.width=n=128;n-=r=i=1/64;x.fillRect(n%2*64,n/2,k/32,1))for(Y=1-n*i,X=n%2-1,k=32;--k/r;i=j)j=2*r*i+X*S(t)-Y*C(t),r=r*r-i*i+Y*S(t)+X*C(t)

Jan 3 2018 9:41 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Spinning Mandelbrot set

u/magna

We're going to need a bigger CPU.
u/iverjo

Nice effect! 22 FPS on my machine, in Firefox. Surprisingly, it runs much slower in Chrome and Edge (4 FPS)
u/sigveseb

Screeching by at 4FPS on my machine too :D nice mandelbrot though
u/donbright

feel like standing up and applauding. unbelievable.
u/rodrigo.siqueira

#mandelbrot #fractal

show FPS hide FPS share fullscreen

veubeke

function u(t) {

t*60&127?0:T=[0,L=.001]
S=[c.width^=0]
T.map((_,i)=>S[i*2-1]=(_+T[i-1])/2+(Math.random(x.fillRect(i,540-_,2,S[i*2]=_))-.5)/L)
T=L<2?S:T
L*=2

Jan 3 2018 8:09 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Simple terrain generation using midpoint displacement

u/iverjo

Nice alternative to perlin noise!
u/sigveseb

Very nice! And with the horizontal flat line we can pretend that is the sea level; everything above is a mountain and everything below is the sea :)
u/iverjo

#random

show FPS hide FPS share fullscreen

fourier.space

remix of d/5263 by u/fourier.space

function u(t) {

t||(y=Array(1e3).fill(1))
x.fillStyle='#eee'
y=y.map((y,r)=>(x.fillRect(y*2e3,4*r-3e3,2,2),r*S(3*y)/1e3))
x.drawImage(c,S(t),C(t),1921,1081)

Jan 3 2018 6:24 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Snowy Mountains

u/fourier.space

Also remix of d/978
u/Xen

smooth

dwitter.net | fourier.space (1755)