Dweets awesomed by u/pavel

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: #Opposites

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KilledByAPixel

function u(t) {

for(c.width|=i=1024;--i;x.fillRect(944+X*r,556+Y*r,r*=S(Math.atan2(X,Y)+(X*X+Y*Y)**.5-t*2),r,x.fillStyle=R(r*8)))r=32,X=16-i%r,Y=512-i>>5

Feb 1 2021 1:09 AM UTC

}// 137/140

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#beesandbombs

u/Xen

nice!

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New_Core

remix of d/21531 by u/New_Core

function u(t) {

for(w=c.width|=i=600;i--;)x.fillRect(i+i/20*C(i*38+t*5),i%20*20+i*S(i/w-.1*S(i/99-t*2)),q=5*S(i*32*i/99)+9,q)
x.fillRect(0,0,9,w)

Jan 31 2021 11:51 PM UTC

}// 129/140

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posted to soon.. shorter now

u/tomxor

Awesome!
u/Qwitter

Yes!
u/aleamb

wow!
u/aleamb

#flag
u/joeytwiddle

Fantastic

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rodrigo.siqueira

remix of d/21504 by u/rodrigo.siqueira

function u(t) {

f = (X,Y,n=120)=>X<8 ? f(S(X)**2+S(Y+1)*Y*.8-.3,2*X*Y+.7,n-5):n/2
for(var i=1921;i--;) {
 x.fillRect(i,t*60,.5-f(i/210-4.5,t/6-2)/30,1)
}

Jan 31 2021 8:50 PM UTC

}// 138/140

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Lyap arcs #fractal

u/rodrigo.siqueira

#lyapunov

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Qwitter

remix of d/21485 by u/Qwitter

function u(t) {

w=c.width=1920;N=128;for(j=9216;j--;)(X=(j%N)*w/N,Y=((j/N)^0)*w/N,x.fillRect(X,Y,9*S(Math.hypot(X-960,Y-540)/33-9*t)+5*C(X/66+9*t),9))

Jan 28 2021 5:11 PM UTC

}// 134/140

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Interference Rose

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Qwitter

remix of d/21477 by u/Qwitter

function u(t) {

w=c.width=1920;N=128;for(j=9216;j--;)(f=(X,Y)=>9*S(Math.hypot(X,Y)/33-9*t),
X=(j%N)*w/N,Y=((j/N)^0)*w/N,x.fillRect(X,Y+f(X,Y)+f(X-w,Y),9,9))

Jan 28 2021 3:37 PM UTC

}// 140/140

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Interference: ("=>9" should be "=>16", but 140 char)

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Qwitter

function u(t) {

w=c.width=1920;N=128;for(j=9216;j--;){X=(j%N)*15;Y=((j/N)^0)*15;x.fillRect(X+40*C(X/120+C(t/3)*Y/99-9*t),Y+40*S(X/120-7*t),9,9);}

Jan 28 2021 2:55 AM UTC

}// 129/140

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u/Xen

nicely done

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jdidion

function u(t) {

c.width=900
for(i=0;i<90;i++)
x.font="75px'",x.fillStyle=`hsl(${t*i*29},30%,10%`,
x.fillText("/\\".repeat(90),-100+C(t*2+i/20)*45,i*15)

Jan 26 2021 7:26 PM UTC

}// 135/140

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u/Xen

does look nice
u/DataMeta

cool #opticalillusion

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KilledByAPixel

function u(t) {

with(x)for(i=c.width|=c.style.filter='invert(',translate(i/2,540);i--;rotate(6))fillStyle=R(0,a=99+80*S(i*i+t),200,.2),fillRect(300,0,a,i/a)

Jan 26 2021 5:23 PM UTC

}// 140/140

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Solar Eclipse ☀️+🌑

Show more comments…
u/Xen

nice!
u/KilledByAPixel

#eclipse
u/danny@hille.dk

wow - that is epic!
u/danny@hille.dk

Good looking code and great visuals!
u/danny@hille.dk

good thing dwitter only allows 140 bytes, or someone would probably have done something like this:
u/danny@hille.dk

with(x)for(i=c.width|=c.style.filter='blur(.3vw)invert(',translate(1250,540);i--;rotate(1))fillStyle=R(a=99+80*S(i*i+t),a*3,255,.2),fillRect(60,0,a,i/a);x.drawImage(c,-600,-900)
u/KilledByAPixel

Thank you 😊
u/cantelope

#selfdefeat

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rodrigo.siqueira

remix of d/21434 by u/rodrigo.siqueira

function u(t) {

for(i=1080;i--;x.fillRect(a=t*120,i,2,.2-f(a/1000-1.3,i/990)))f=(X,Y,n=90)=>T(t*X)*S(Y)*2<2?f(X*X-Y*Y,2*X*Y+.7,n-=2):n/70

Jan 25 2021 2:54 PM UTC

}// 121/140

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Thorn forest #mandelbrot #fractal

u/Xen

Love it!
u/aaaaaz

#forest

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erin

remix of d/21430 by u/erin

function u(t) {

c.width=w=70;for(i=2800;i--;)x.fillRect(X=i%w,Y=(i)/w,X/15+1*C(Y/7)+C(X/7-5*t),1)

Jan 25 2021 1:52 AM UTC

}// 81/140

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Pulsar

u/erin

no fuckin clue how i got this in 81 characters
u/Qwitter

if you send a single pixel across the screen at this resolution (70) like fillRect(X+t,,1,1,1) you can see how the canvas has a smoothing effect by slowly pouring the alpha = 255 value between the pixels
u/magna

76: c.width=w=70;for(i=3e3;i--;)x.fillRect(X=i%w,Y=i/w,X/15+C(Y/7)+C(X/7-5*t),1)
u/danny@hille.dk

drip drip -> c.width=w=70;for(i=3e3;i--;)x.fillRect(Y=i%w,X=i/w,X/14+C(Y/11)+C(X/7-t*8),1)

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