Random dweets | Dwitter

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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ArthurThuczsec

remix of d/12236 by u/butcherfly

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=99;i--;x.fill(x.arc(960+C(i+t)*9,540+S(i+t)*9,5*i,0,9)))x.beginPath(x.fillStyle=R(S(t*i)*255,0,i,.6))

Aug 11 2021 10:20 PM UTC

}// 131/140

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f8f82804

remix of d/9252 by u/f8f82804

function u(t) {

x.globalAlpha=.01;x.fillRect(0,0,2e3,2e3);for(i=a=30;z=--i*a*C(b=i+99*t/i/i);)x.clearRect(960+3e5*S(b)*i/(d=2e3-z),540+1e3*z/d,9,9)

Aug 22 2018 4:44 PM UTC

}// 131/140

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#perspective #galaxy #trails

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Purpzie

remix of d/10099 by u/o539

function u(t) {

c.width|=0;for(i=0;i<840;i++)a=((b=0|i/40)%2==1?S:C)(t),x.fillRect(a*800+i%40*100-1e3,b*50,50,50)

Sep 27 2018 10:53 PM UTC

}// 97/140

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20 characters shorter

u/yonatan

10 more: for(c.width|=i=840;i--;x.fillRect(a*800+i%40*99-1e3,b*50,50,50))a=((b=0|i/40)%2?S:C)(t)
u/Purpzie

goodness gracious
u/New_Core

or even 13 shorter then that... ;) diffrent code tho.. for(c.width|=i=962;i--;)x.fillRect(i%37*99+800*S(t+i%2)-800,i%26*40,50,50)
u/New_Core

*noticed a small error.. (in72b) for(c.width|=a=i=840;i--;)x.fillRect(i%37*99+a*S(t+i%2)-a,i%22*50,50,50)
u/Purpzie

holy cRAP that is absolutely amazing

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tactical_retard

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍩󟝳󟜲󩜳󞽩󛜭󞽳󭍲󫽫󩜨󚜩󠜽󠼨󬜽󪜩󚭳󛍂󟝓󚍱󚜪󬼬󨜽󠼨󬌽󪜪󚭴󚜪󬼬󨬽󤼨󬌩󚭳󛍢󩝧󪝮󤍡󭍨󚍳󭍲󫽫󩝓󭍹󫍥󟝒󚍓󚍤󟝍󨝴󪌮󪍹󬍯󭌨󚍁󚽡󚜯󜬬󚍂󚽢󚜯󜬩󛼹󚜯󩌪󜽥󜼬󜌬󜌬󛬰󝜩󚜬󫝯󭭥󥍯󚍁󚼹󝬰󛍂󚼵󝌰󚜬󫍩󫭥󥍯󚍡󚼹󝬰󛍢󚼵󝌰󚜻`.replace(/u../g,'')))

May 2 2022 7:41 PM UTC

}// 138/140

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Point

u/tactical_retard

It takes two random points on a circle, gets the mid point between them, then draws the line connecting them with a color based on the X and Y of the mid point.
u/tactical_retard

c.style.filter="brightness(3";with(x)for(i=s=2e3;i--;stroke())A=C(i)*s,B=S(i)*s,a=C(p=i**t)*s,b=S(p)*s,beginPath(strokeStyle=R(S(d=Math.hypot((A+a)/2-200,(B+b)/2-200)/9)/d*3e3,0,0,.05)),moveTo(A+960,B+540),lineTo(a+960,b+540)
u/tactical_retard

#red

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katkip

function u(t) {

x.globalAlpha=.01;t/=9;for(i=50;i--;)for(j=50;j--;)x.fillStyle=R(i*5,0,j*5),x.fillRect(960+C(i+t)*j*999/j,540+S(i+t*i)*999/j,20,20)

Jan 29 2019 6:01 PM UTC

}// 131/140

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Energy Ray

u/mxfh

with alpha R it's down to 117, or is there a visual difference?
u/katkip

Idk, random coding

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rodrigo.siqueira

remix of d/33087 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=480;i--;)for(j=20;j--;x.clearRect(i*4,r,4,4))r=30*j+245+C(i/23/2+t)*S(t/2)*96*C(j/4-t*4)+S(t-i/42-S(j/2-t))*33

Jan 19 2025 2:33 PM UTC

}// 140/140

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Wavy lines

u/cantelope

#uncompressed #gem

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McNoodle

function u(t) {

c.width+=0;x.beginPath();for(let i=0;i<130;i++)x.lineTo(Math.random()*1920,Math.random()*1080);x.fill();

Dec 26 2019 1:45 PM UTC

}// 104/140

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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

u/Xen

Danger, danger,, DAnger!!

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bandaloo

function u(t) {

for(i=48;i--;)for(j=27;j--;)d=i&j,x.fillStyle=`hsl(${d?d+t*9:i+t*99},50%,${j+T(t)}%)`,x.fillRect(i*40+T(t)*C(t+j/2)*40,j*40,40,40)

Jul 28 2020 5:06 AM UTC

}// 130/140

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u/magna

Neat!
u/donbright

#sierpinski

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bobdunn

remix of d/4765 by u/bobdunn

function u(t) {

c.width=1920; /* clear the canvas */
  for(i=0;i<128;i++)
  x.fillRect(i*15 , 540 + C(2*t+(i*2))*270, 6, S(1*t+i*2)*270)

Dec 30 2017 5:03 AM UTC

}// 120/140

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femto113

function u(t) {

c.width=1920
X=960,Y=540,P=Math.PI,N=t/P%32,p=P/N
for(i=0;i<P;i+=p)x.fillRect(X+Y*(S(i+P)-S(i))/2*S(t+i),Y+Y*(C(i+P)-C(i))/2*S(t+i),19,19)

Nov 14 2020 8:31 AM UTC

}// 138/140

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linear motion rolling circle illusion

u/katkip

#illusion
u/DataMeta

nicely done
u/pavel

If you delete c.width=1920 you can see only the first dot move linearly
u/femto113

curves are a side effect of changing N with t, if you use a fixed value like N=16 you get straight lines