Dweets awesomed by u/iverjo

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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sandromiccoli

function u(t) {

x.strokeStyle=R(0,0,0,0.1);for(i=0;i<9;i++){r=t*i/100000;x.rotate(r);s=20+t*25*i;x.strokeRect(c.width/2-s/2,c.height/2-s/2,s,s)}

Jan 4 2018 2:16 AM UTC

}// 128/140

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u/magna

Pause, print, sell prints, profit!
u/sandromiccoli

<3

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BackendForth

function u(t) {

c.width=1920
for(i=0;i<1920;i+=4)
{s=i/99-t*4%27+5
w=Math.pow(2,-s*s)*99+9
x.fillRect(i,540-w/2+S(i/43)*9+(i>960?i/2-480:0)*(i%8?1:-1),8,w)}

Jan 4 2018 1:11 AM UTC

}// 140/140

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Show more comments…
u/justinwzig

This rocks
u/magna

Awesome!
u/lurifax

Smooth!
u/sigveseb

Niiice
u/jbl

beautiful!
u/Bugsy

Golfed and slightly cleaned at https://www.dwitter.net/d/5543. Have fun with the extra characters!
u/Bugsy

(cleaned is referring to some slight blockiness on the right side of the animation, not the code. My code is much uglier :P)
u/BackendForth

Neat! TIL Javascript accepts python notation for exponents.
u/ETHproductions

Golfed even further at https://www.dwitter.net/d/5601. Now there's 30 extra chars to play around with :-)
u/mohd-akram

I was expecting it to open like a zip :D
u/lionleaf

#feynman #feynman_diagram #organic #quantum_field_theory
u/lionleaf

#zip
u/rodrigo.siqueira

Neural sign propagating through axon terminals
u/rodrigo.siqueira

#neural
u/rodrigo.siqueira

#neuralnetwork

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corruptio

remix of d/5423 by u/aemkei

function u(t) {

for(c.width|=i=h=999;i--;)x.fillText(0,h+(i*h-i*i)**.5*S(t+i),i)

Jan 4 2018 12:42 AM UTC

}// 64/140

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golfier

u/lurifax

Nice golfing!
u/iverjo

#sphere

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Erazed

function u(t) {

w=c.width=2e3;h=5e2;for(i=1e-3;i<9;){X=1e3+i*99*C(3*t/i);Y=h+i*99*S(3*t/i);x.moveTo(X,Y);x.arc(X,Y,i++<1?60:i>6?25-2*i:i<5?i:3,0,9)}x.fill()

Jan 3 2018 11:25 PM UTC

}// 140/140

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eviltoad

remix of d/5428 by u/eviltoad

function u(t) {

t||(a=s=1);f=(n)=>n<0|n>2080?s*=-1:x.fillRect(0,a=n,2920,50*Math.random());x.fillStyle=R(a*S(t/.1),a*C(t+.1),a*S(t));f(a+s);x.rotate(a);

Jan 3 2018 10:37 PM UTC

}// 136/140

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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

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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

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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

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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

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Qwitter

function u(t) {

a=500;c.width=4*a;x.lineWidth=9;x.beginPath();for(i=1;i<10;i++){p=3*C(t)+4*i*.698;x.lineTo(a*(2+C(p)),a*(1+S(p)));}x.closePath();x.stroke();

Jan 3 2018 8:02 PM UTC

}// 140/140

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ellisk1

function u(t) {

T=t%6*4;if(T<.2)c.width+=0;for(i=T;i<19;i++)x.fillStyle=R(0,0,0,(T+19)/3e3),w=250*(2+C(i/3))*C(T/8+i/12),x.fillRect(960-w/2,30+50*i,w,50)

Jan 3 2018 7:58 PM UTC

}// 137/140

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u/sigveseb

woooow hourglass!

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CliffJonesJr

remix of d/5167 by u/CliffJonesJr

function u(t) {

M=245
P=c.width/c.clientWidth
x.font='99px A'
onmousemove=e=>{x.fillStyle=R(a=e.shiftKey*M,b=S(t)*M,M-a-b,.2)
x.fillText('●',e.x*P,e.y*P)}

Jan 3 2018 7:09 PM UTC

}// 138/140

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Fading finger paints! Hold down SHIFT for warm colors.

u/iverjo

Challenge for the dweeters out there: Make art with this tool and post a link to an image of the result
u/CliffJonesJr

River Sunset: http://cliffjonesjr.com/media/dwitter-sunset…

dwitter.net | iverjo (56085)