Top dweets of all time

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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MAxSaL

function u(t) {

for(i=0;i<120;i++)
x.fillRect(t*99, S(t*9)*9+i*9, 1, T(C(t)%S(i))*9);

Apr 1 2019 9:18 AM UTC

}// 70/140

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Wavey pattern

u/geb

#background

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marc8

function u(t) {

c.width|=0
with(x)for(j=3;j;j--){beginPath()
for(i=-4;i<9-C(t)*10;i+=.02)arc(a=i*99,q=-150+j*350,j*50,i-.01,i)
arc(a,q,99,i,i+6)
stroke()}

Mar 31 2019 5:06 PM UTC

}// 138/140

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Curtate, common and prolate throcoid

u/joeytwiddle

#math

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andrea270872

function u(t) {

r=_=>Math.random()
x.font=2+r()*3+"em'"
x.fillStyle='white'
for(i=7;i--;)x.fillText([...'🌱🌾🍁❄'][(t>>2)%4],r()*2e3,75+r()*1e3)

Mar 19 2019 4:57 PM UTC

}// 125/140

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Year

u/lionleaf

#seasons I'm enjoying this one!
u/DataMeta

Heh. Nice.

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tomxor

function u(t) {

c.width=384;for(i=800;i--;)"߿蠀￱衁	衂	衂	蠂ŉ蠂蠂䅉蠂␉蠂⠉蠂⠉蠂␉蠂 衂䅉衂䂉衂腉衂	衂	衂	衂￱蠁蠀߿".charCodeAt(i>>4)>>i%16&1&&x.fillRect(180+(i>>5),96|i&31,1,1)

Mar 18 2019 12:51 AM UTC

}// 140/140

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128k Sad Mac #mac #retro

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andrea270872

function u(t) {

c.onclick=e=>{Y=K}
c.width|=K=1e3
Y=t?Y:0
x.fillRect(X=t*500%2e3,9,B=50+(10<Y&Y<99)*(950<X&X<K)*99,B)
x.fillRect(K,Y?Y-=20:K,9,50)

Mar 17 2019 2:46 PM UTC

}// 130/140

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William Tell (remake of my first game on C=64) - click to shoot the black "apple"

u/katkip

#game
u/katkip

#interactive

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marc8

function u(t) {

c.width=480
z=99
for(j=-2*z;j<2*z;j++)
{k=j<-z?j+z:j>z?z-j:0
for(i=0;i<9;i++)x.fillRect(z+i*25+S(t)*75+2*k*C(t+k/z),z+j/4,12+10*k/z,1+k/z)}

Mar 15 2019 4:00 PM UTC

}// 140/140

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#default

u/Xen

nice
u/tomxor

Eery, feels like some kind of swimming creature!

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camel_case

function u(t) {

l={}
p=0.01
r+=0.007
for(i=0; i<50; i++){
p+=r*p*(1-p)
l[i%h]=p
for(j=0; j<h; j++){x.fillRect(t*120, 1080-l[j]*540, 2, 2)}
}
}
var r=0,h=6
{

Mar 14 2019 5:50 PM UTC

}// 140/140

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Logistics map with some bifurcation, still trying to figure out how to make it look pretty tho

u/artfarnaa

Nice, though I suggest provide a link to background info on what a logistics map is and what bifurcation does. We newbies need just a tad of hand holding.
u/rodrigo.siqueira

#bifurcation

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katkip

function u(t) {

for(i=999;i--;)r=Math.random()*t*3,x.fillRect(
959+S(r/3+S(r/9+S(r+t)/399)*r*2)*960,
539+S(r/2+C(r/5-C(r+t)/399)*r*2)*540,
2,2);

Mar 13 2019 12:34 PM UTC

}// 128/140

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#waitforit #abstract ink can't escape

u/Ath0r

cool!

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qm3ster

remix of d/12153 by u/LimeLaser

function u(t) {

r=Math.random;p=t?p.map(([a,b,f=R(0,a/8,b/4)]=[1920*r(),1080*r()])=>[a+4-8*r(),b+4-8*r(),x.fillStyle=f,x.fillRect(a,b,2,2)]):[...Array(999)]

Mar 5 2019 3:25 PM UTC

}// 140/140

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#golfed added colors instead

Show more comments…
u/qm3ster

Colors correspond to starting position. Horizontal speed is now equal to vertical.
u/f8f82804

This might be one of the best #random dweets I've ever seen! Gorgeous!
u/LimeLaser

This is awesome!
u/pavel

131 for(r=Math.random,i=1e3;i--;x.fillRect(S[i]+=4-8*r(),C[i]+=4-8*r(),2,2))S[t]=2e3*r(),C[t++]=1080*r(),x.fillStyle=R(0,S[i]/8,C[i]/4)
u/qm3ster

@pavel why do you use 2e3 as approximation for 1920 but not 1e3 as approximation for 1080? It's not like they're used as bounds.
u/qm3ster

@pavel it doesn't persist the colors of the particles, so it just paints the whole c a gradient.
u/pavel

Ah, I didn
u/pavel

I didn't catch the color change, it does complicated the code: 138 for(r=Math.random,w=i=2e3;i--;x.fillRect(S[i]+=4-8*r(),C[i]+=4-8*r(),2,2))c[t]=S[t]=w*r(),x[t]=C[t++]=w*r(),x.fillStyle=R(0,c[i]/8,x[i]/4)
u/pavel

2e3 overruns and you can't see it. 1e3<1080 so the bottom has more whitespace and it looks bad.
u/pavel

135 for(r=Math.random,w=i=2e3;i--;x.fillRect(p[0]+=4-8*r(),p[1]+=4-8*r(),2,2))p=u[i]=t?u[i]:[a=w*r(),b=w*r(),R(0,a/8,b/4)],x.fillStyle=p[2]
u/pavel

134 for(r=Math.random,w=i=2e3;i--;x.fillRect(p[0]+=4-8*r(),p[1]+=4-8*r(),2,2))p=u[i]=u[i]||[a=w*r(),b=w*r(),R(0,a/8,b/4)],x.fillStyle=p[2]
u/pavel

This does look great :), not sure what else to add with the spare chars
u/qm3ster

Nice! I limited it to 100 particles, each gets 20 movements per frame now:
u/qm3ster

for(r=Math.random,w=i=2e3;i--;x.fillRect(p[0]+=2-4*r(),p[1]+=2-4*r(),2,2))p=u[z=i%100]=u[z]||[a=w*r(),b=w*r(),R(0,a/8,b/4)],x.fillStyle=p[2]

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pavel

function u(t) {

for(c.width=120,k=4072;j=--k>>6;x.fillRect(60+i,j,1,1))i=k%64-32,s=64*j-i*i-j*j,f=s**.5*S(a=S(3*t))+i*C(a),x.fillStyle=R(g=f*f/4,g,g+f,s/99)

Mar 3 2019 3:17 AM UTC

}// 140/140

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u/aleamb

#shading
u/13thptr

#sphere