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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nikoloffgeorgi

function u(t) {

c.width|=i=20
x.moveTo(2100,500)
while(i--){x.lineWidth=i*30+50
x.lineTo(i*96-100,500+S(i+t*5)*100)
x.stroke()}

Jul 29 2020 7:30 PM UTC

}// 111/140

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doppelgünther

function u(t) {

c.width=800
m=60
for(i=0;i++<m;){
f=10+i/m*730
x.fillRect(f,40,10,100+(C(t+i*3)+1)*50)
x.fillRect(f,400,10,-100+(C(t+2+i*3)+1)*-50)
}

Jan 7 2022 12:51 AM UTC

}// 133/140

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check out this negative space spirally boi

u/joeytwiddle

#helix
u/vain

very cool fx !

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rodrigo.siqueira

remix of d/28302 by u/rodrigo.siqueira

function u(t) {

f=n=>Math.abs(n+~n+.5)
for(c.width%=W=X=2e3;X--;)for(Y=1,k=8;k--;x.fillRect(X,Y*W-999,C(Y+4.5),W))Y-=Math.abs(f((~~(2*t%7))**k*X/W)-.3)/3**k

Aug 17 2023 12:12 PM UTC

}// 140/140

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Geometric subdivisions (fractal mountain formation)

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katkip

remix of d/9281 by u/Xen

function u(t) {

for(i=2e3;i--;x.strokeStyle=`hsla(${Z+i},99%,40%,1)`)x.strokeRect(i+T(Z=t*i/2)*4,540+Z*S(i*Z/9999),t,t);x.drawImage(c,t,0)

Aug 18 2018 12:10 PM UTC

}// 122/140

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Cloud

function u(t) {

c.width|=0;for(i=0;i<5;i++){x.ellipse(960+S(t/.7+i/2)*200,550+C(t/.35)*70,40*i,50*i*2+S(i*2)*60,S(t/.7+i/5)/10,0,7);x.fill();x.beginPath()}

Jan 23 2020 3:07 PM UTC

}// 139/140

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A big fish

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384.cz

function u(t) {

c.style="filter:invert(";for(c.width|=i=780;i--;)x.font=i/2+"px'",x.globalAlpha=i/30%1,x.fillText("❄",2e3*T(S(i)),t*(2*i)%2e3)

Dec 2 2022 6:07 AM UTC

}// 126/140

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Christmas theme

u/384.cz

#snowflake #snow #particles

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jwc

function u(t) {

z=Math.random;if(!t)u[0]=u[1]=0;for(i=99;i--;B=u[1]++)X=z(),Y=z(),A=u[0]+=s=X*X+Y*Y<=1,x.fillRect(1e3*X,1e3*Y,g=2*s+2,g);throw("π≈"+4*A/B)

Jan 3 2021 7:27 AM UTC

}// 138/140

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Monte Carlo approximation of π

u/Xen

love it!
u/CalSch

What's with u[0] and u[1]?

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FrenchToast

remix of d/5798 by u/FrenchToast

function u(t) {

c.width|=0;for(i=320;i--;){x.beginPath();x.arc(350*S(t*3)*S(i/70),2*i,40+i,0,6.28);x.fill();x.fillStyle=R(330-i,200-i,200-i);x.rotate(1.4)}

Jan 12 2018 7:18 PM UTC

}// 139/140

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u/galactustrombone

aaahh this feels so weird
u/galactustrombone

well done
u/sandromiccoli

shake it
u/joeytwiddle

Golfed to 130: with(x)for(c.width|=i=320;i--;rotate(1.4))beginPath(fillStyle=R(330-i,200-i,200-i)),arc(350*S(t*3)*S(i/70),2*i,40+i,0,6.28),fill()

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hill

remix of d/811 by u/hill

function u(t) {

c.width=1920;for(i=0;i<9;i++){x.beginPath();x.arc(c.width/2+i*T(t)*50,c.height/2+i*T(t)*50,50,0,2*Math.PI);x.stroke();}

Feb 22 2017 8:46 AM UTC

}// 119/140

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CliffJonesJr

remix of d/5167 by u/CliffJonesJr

function u(t) {

M=245
P=c.width/c.clientWidth
x.font='99px A'
onmousemove=e=>{x.fillStyle=R(a=e.shiftKey*M,b=S(t)*M,M-a-b,.2)
x.fillText('●',e.x*P,e.y*P)}

Jan 3 2018 7:09 PM UTC

}// 138/140

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Fading finger paints! Hold down SHIFT for warm colors.

u/iverjo

Challenge for the dweeters out there: Make art with this tool and post a link to an image of the result
u/CliffJonesJr

River Sunset: http://cliffjonesjr.com/media/dwitter-sunset…