Dweets awesomed by u/tomxor

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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mildlybean

function u(t) {

onmousemove=e=>Y=e.y*3.54;if(!t)L=[],Y=540,L[m=99]=540;c.width|=L[-1]=Y;for(i=m;i--;x.fillRect(i*20,L[i],9,9))L[i]=t?(L[i-1]*2+L[i+1])/3:540

Sep 7 2019 6:07 PM UTC

}// 140/140

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#interactive

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taupelink

remix of d/15517 by u/taupelink

function u(t) {

for(i=d=e=f=1e3;i--;x.fillRect(d*z,e*z,1,1))[d,e,f]=[(r=Math.random(z=99)*z|0)/5+(2+r%5)/(2+r%3)*C(d-r*r/z)/2,r%11-S(T(d))/f,2**(r%2)+f/9]

Sep 6 2019 3:14 AM UTC

}// 138/140

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d/15630

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DataMeta

function u(t) {

r=Math.random,m=r(n=r(o=r(l=255)))
with(x)for(j=768;j--;beginPath(fill()))fillStyle=R(l*m,l*n,l*o,.1),
arc(64*(j%31),64*(j/31|0),r()*51,0,7)

Sep 6 2019 1:40 AM UTC

}// 140/140

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#psychedelic

u/taupelink

groovy!
u/DataMeta

haha ty

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katkip

function u(t) {

fs=0;
t||(X=Y=0);c.onmousemove=e=>{X=e.x/(Z=(fs?1:0.295)),Y=e.y/Z};x.beginPath(),x.fillStyle="#0002",x.arc(X,Y,10,0,7),x.fill();

Sep 5 2019 9:51 AM UTC

}// 128/140

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Precise paint. If you want to use it on fullscreen, change fs to 1

u/katkip

^ edit: isn't precise when fs=1
u/Fime

On mobile, at least in opera touch there is always an offset in dweets which use mousemove

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django

function u(t) {

w=c.width*=1;w/=2;x.beginPath();x.lineWidth=3
for(i=0;i<1000;i++)
x.lineTo(w+0.9*w*(S(.1*2.5*i/10+t)),1.1*i+30*C(t+i/11))
x.stroke()

Sep 3 2019 4:16 AM UTC

}// 132/140

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noodle

u/katkip

yummy
u/aleamb

nice!

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mildlybean

function u(t) {

w=[[99,30,8],[3,50,1],[6,9,-1]];for(c.width|=i=1919;i--;x.fillRect(i,540+y,15,15))y=0,w.forEach(function(m){y+=m[1]*S(t*m[2]+i*m[0]/305)*5})

Sep 2 2019 7:38 PM UTC

}// 140/140

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Sum of three sine waves. By modifying w, you can try any combination of sine waves.

u/mildlybean

w=[[3,25,3],[6,25,2],[9,25,1]] is cool
u/mildlybean

So is w=[[4,20,-2],[2,40,2]]

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taupelink

remix of d/15591 by u/taupelink

function u(t) {

for(i=d=e=f=1e3;i--;x.fillRect(d*z,e*z,f,f))[d,e,f]=[1+(r=1+Math.random(z=170)*9|0)+f*C(d)/(q=r%3+r/20),f*(1-S(f)/3)*(2-C(d+f)),q+.1/f]

Sep 1 2019 12:34 AM UTC

}// 135/140

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d/15593

u/DataMeta

I see people with elaborate headgear facing away or robots facing us
u/tomxor

hah, same, but not the robots

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rodrigo.siqueira

remix of d/15559 by u/tomxor

function u(t) {

for(c.width=128,i=576;i-=1/16;x.fillRect(16*X,16*Y,Z,Z))
x.fillStyle=R(0,35,90),X=i%8,Y=i/128,
Z=1+C(20*T(Y+T(X*2))*C(X+T(Y*9))+t*4)**3/3

Aug 31 2019 12:58 AM UTC

}// 137/140

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Sea from above. #water

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u/jellyedwards

Amazing!
u/aleamb

YES!
u/aleamb

#realisti
u/aleamb

#realistic
u/tomxor

nice, sometimes the unfloored i/128 works in our favour, adds that overall gradient that makes it look like reflecting sky
u/katkip

nice
u/katkip

#tagfail
u/iverjo

Very nice water

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metamero

remix of d/15480 by u/metamero

function u(t) {

throw T=-~T

Aug 29 2019 1:28 PM UTC

}// 11/140

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11B variable reuse init demo

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u/tomxor

Good for integer init, this is because bitwise operators in JS coerce all non-number types to 0 (but also temporarily cast to int32 destroying floats)
u/tomxor

this includes trully undefined (not undefined _type_), so you can use it to init non existant properties on an object/function e.g u.foo=-~u.foo
u/katkip

nixw
u/katkip

^ nice
u/aleamb

#codehack #code_tricks #code
u/DataMeta

#hiddengems
u/DataMeta

#hiddengem *

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tomxor

remix of d/15553 by u/tomxor

function u(t) {

for(c.width=128,i=576;i-=1/16;x.fillRect(16*X,16*Y,Z,Z))
X=i%8,Y=i/128,
Z=1+C(5*S(Y+C(X*3))+5*S(X+S(Y*3))+t*4)**3/3

Aug 28 2019 3:34 PM UTC

}// 115/140

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#lava

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u/aleamb

awesome!
u/katkip

i thought it's perlin noise. gj
u/tomxor

Never heard of it :) time for a quote: "Absolute Ignorance is the artificer [...] in order to make a perfect and beautiful machine it is not necessary to know how to make it" - Robert Beverley MacKenzie, 1868 ... gona keep my monkey fingers typing, maybe I will learn something.
u/taupelink

excellent
u/username

so what did you use to implement this noise?
u/DataMeta

115 bytes, clearly :)
u/KilledByAPixel

👍

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