Top #golfed dweets

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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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

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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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ciaccodavide

remix of d/20700 by u/ciaccodavide

function u(t) {

for(c.width|=i=9;i--;)x.moveTo(X=440+i*121,0),x.arc(X+((P=C(t*4)*99)<0?!i?P:0:i==8?P:0),540,60,4.7,11)
x.stroke()

Nov 19 2020 8:50 AM UTC

}// 113/140

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Newton's cradle #golfed

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username

remix of d/12129 by u/rodrigo.siqueira

function u(t) {

X=Y=0
for(c.width|=i=1e3;i--;X=X*C(2*(t+Y))+Y/4,Y=C(2*X+Y+t/3)-S(i+X+t)/3)x.fillRect(1e3+X*742,521+Y*338,5,5)

Feb 8 2019 11:27 PM UTC

}// 109/140

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#golfed

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ciaccodavide

remix of d/20723 by u/ciaccodavide

function u(t) {

K='🕛🕐🕑🕒🕓🕔🕕🕖🕗🕘🕙🕚🕧🕜🕝🕞🕟🕠🕡🕢🕣🕤🕥🕦'
m=(d=new Date()).getMinutes(h=d.getHours(x.font="9em'"))>29&&24
x.fillText(K.substr(h%12*2+m,2),0,133)
throw(d)

Nov 20 2020 2:19 PM UTC

}// 140/140

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Real time #emoji #clock that throws the date #golfed

u/ciaccodavide

Golfing that throw(d) into d/20723 felt good

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katkip

function u(t) {

t||(x.translate(960,540));x.font='12cm"';x.scale(1,-1);x.fillText("Mirror",-600,-0)

Jun 13 2019 8:00 AM UTC

}// 83/140

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Better mirror #golfed 108 to 83 bytes

u/KilledByAPixel

Nice but not as fun.

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username

remix of d/888 by u/jczimm

function u(t) {

for(c.width|=i=999;i--;0)for(j=(t%7|0)+1;j--;0)x.fillRect(960+196*C(i)*S(T(t/2)+j/i),542+196*S(i),9,9)

Feb 11 2019 12:30 AM UTC

}// 102/140

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#golfed and number of dot changes

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lewdev

remix of d/28320 by u/lewdev

function u(t) {

x.fillText([36e2,c.width=60,1,.01].map(A=>(B=t>=A?t/A>>0:0,t%=A,B>9?B:`0`+B)).join`:`,2,9)

Apr 26 2024 1:55 AM UTC

}// 90/140

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⏲ Running #timer #clock (#golfed -15b)

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qm3ster

remix of d/12631 by u/andrea270872

function u(t) {

t||(y=e=30,h=495)
x.fillRect(y+=v=e<y?y+e>(c.width+=0)?-e:v:e,a=h+S(t/2)*h,e,e)
x.fillRect(2,a-e,e,90)

Mar 5 2019 5:26 PM UTC

}// 102/140

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Pong HD #golfed

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