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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Current theme challenge: #Food

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andrea270872

function u(t) {

I=t*3320%2e3;J=t*94%1e3
i=A=I/2e3;B=J/1e3
for(;i++<13;[A,B]=[A*A-B*B+.3,2*A*B],C=A*A+B*B)
x.fillStyle=R(C*200,0,0,.3)
x.fillRect(I,J,i*=4,i)

Mar 7 2019 8:26 PM UTC

}// 140/140

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Ghost of Julia ver5 (in red)

u/f8f82804

#fractal
u/13thptr

weird rendering:I love it :)
u/andrea270872

thanks... I had to cut a lot of corners to even get something looking like that :D
u/13thptr

#scanline
u/Xen

love it!

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jdspugh

function u(t) {

d=10;j=192
m=t/d;n=C(m)
for(i=j*96;i--;)h=i/j,w=i%j,a=w/d,b=h/d,r=C(n*a)*C(m*b)-C(m*a)*C(n*b),x.fillStyle=R(d/r/r),x.fillRect(w*d,h*d,d,d)

Mar 25 2022 3:58 PM UTC

}// 138/140

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Chladni Figures - Square Plate

u/rep_movsd

Nice!

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scwaller

remix of d/32394 by u/Agnes

function u(t) {

eval(unescape(escape`󩭯󬬨󮌮󩭯󫭴󟜧󜜰󜍱󘬧󛍣󛭷󪝤󭍨󯌽󤬦󟝴󟼰󞭤󟝸󛭧󩝴󢝭󨝧󩝄󨝴󨜨󘝸󛭦󪝬󫍔󩝸󭌨󙽄󭽩󭍴󩝲󙼬󝜬󝼵󚜬󜌬󭼽󜬹󜬬󞌰󚜻󚼫󤬼󜽥󝌻󮌮󩭩󫍬󤭥󨽴󚌶󝜵󚽒󙝷󚬲󚽃󚍒󚜪󫜬󝌶󜌫󜬪󤬯󭼫󤼨󤬩󚭭󛍤󛭤󨝴󨝛󤬪󝌫󜽝󟬾󝬬󜼩󚝭󟝴󟬲󟼨󭌭󜬩󚬷󜌰󚭔󚍒󚭒󚜺󜌻`.replace(/u../g,'')))

Oct 29 2024 4:13 AM UTC

}// 138/140

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I blew up dwitter

u/Agnes

Nice, it's really hard to see how the squares line up with the letters at full speed but the effect is convincing

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joeytwiddle

function u(t) {

c.width|=0;for(i=2;i--;)s=i?99+80*S(t*3):9,x.font=P=s+"px sans",
T=i?P:'X'.repeat(400),
x.fillText(T,960-x.measureText(T).width/2,540+s/3)

Jul 24 2019 8:53 AM UTC

}// 138/140

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To centralise #text vertically, add ~fontSize/3

u/joeytwiddle

To centralise horizontally, subtract x.measureText(T).width/2
u/joeytwiddle

(I think u/f8f82804 showed me that trick)

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KilledByAPixel

remix of d/27287 by u/KilledByAPixel

function u(t) {

for(j=19;j--;)for(i=200;i--;x.fillRect(z,y+20,3,160))x.clearRect(z=j*200-i*3-t*240%400,y=440+(j%2*500-250)*S(i/63.66),3,200)

Mar 30 2023 6:49 PM UTC

}// 124/140

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Braid 🔀

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rodrigo.siqueira

remix of d/26838 by u/rodrigo.siqueira

function u(t) {

x.fillRect(x.globalAlpha=.05,0,2e3,2e3)
for(i=2e3;i--;)for(j=6;j--;)x.clearRect(i*S(K=i*i*j-t/5)+940,i*C(K-C(t+i/199)/2)/2+540,v=j*S(t+j),v)

Jan 21 2023 4:06 AM UTC

}// 140/140

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Wave field

u/Xen

love it!
u/magna

YES!
u/aleamb

beautiful

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rodrigo.siqueira

remix of d/34502 by u/rodrigo.siqueira

function u(t) {

t?c.style.filter=`invert(`:𝕏=X=Y=0
for(i=3e4;i--;𝕏=X,x.fillRect(840+Y*400,X*600+380,t<2,.03))
X=S(X*X-Y*Y+.43),Y=C(2*𝕏*Y+1.1)+(X*X*Y*Y)/.9

Nov 9 2025 4:20 PM UTC

}// 138/140

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Alien Attractor #attractor

u/ximavus

Those attractor ones are very nice

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cantelope

remix of d/9132 by u/cantelope

function u(t) {

for(x.fillRect(0,0,i=4e3,i),w=960;i--;x.clearRect(w+X/Z*w,(25+S(t)*4+S(d/(z=300)-t)*4)/Z*w,s=z/Z,s))X=i%(v=64)-32,Z=-32+i/v|0,d=X*X+Z*Z,Z+=v

Aug 5 2018 10:39 PM UTC

}// 140/140

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u/jdspugh

Awesome

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firegodjr

remix of d/8369 by u/BirdsTweetCodersDweet

function u(t) {

for(c.width|=i=1e3;i--;x.beginPath())x.globalAlpha=.1,x.arc(S(t*2+i/50)*i+960,C(t*3+i/50)*i+540,i/9+2,0,7),x.fill()

Jun 4 2018 4:52 PM UTC

}// 115/140

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u/joeytwiddle

I like the shading effect. It makes the tube appear rounded.

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username

remix of d/14074 by u/username

function u(t) {

x.fillText(`|`,37*(t*5%55),333+99*(t%2-1)**2)
x.drawImage(c,1,9)

May 22 2019 1:06 PM UTC

}// 64/140

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64 bytes btw :D