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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ArthurThuczsec

remix of d/25515 by u/rodrigo.siqueira

function u(t) {

for(c.width=256,i=1e3;i-=1/8;)x.fillStyle=R(z=(X=i%16)*16,!x.fillRect(z,y=(Y=i/99)*16,Z=2+C(6*S(Y+C(X+t))+7*S(X+S(Y-t))+t*8),Z)+Z*69,y*2)

May 20 2022 2:33 PM UTC

}// 137/140

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plaY

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rodrigo.siqueira

function u(t) {

K=3.5
if(!t){for(b=-K;b<=K;b++)for(C=-K;C<=K;C++)for(a=-K;a<0;a++)for(X=680;X--;x.fillRect(X*1.7+380,540+Y,2,2))Y=(C*120+a*(X-340))/b*1.5}

Apr 19 2021 4:20 PM UTC

}// 138/140

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Cover of "Computers And Automation And People" magazine, January, 1973. I was able to recreate the image based on a small description (in page 5): "Front Cover Picture: The front cover drawing, called "Phropase", was produced by an Algol 60 program, drawing straight lines ax + by + c = 0, where a, b and c were "stepped arithmetically in nested loops". The computer used was an ICL 1904A, driving a Calcomp 1934/6 plotter. The programmer artist is Nihan Lloyd-Thurston.

u/rodrigo.siqueira

Here is the full journal with it's cover artwork and description: https://archive.org/details/bitsavers_comput… "Computers And Automation And People", Jan., 1973
u/smtsjhr

thats so cool and well done! I find this kind of exercise to be very inspiring : )

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pewpew

function u(t) {

for(i=1;i<400;i++){
b=128-S(t)*127;s=i*0.5;l=s%(C(t)*i);x.fillStyle = R(b,s,s,0.5*(S(t*i)));x.fillRect(1920/400*i,540+C(t)*T(t*i)*200,l,l);}

Jan 4 2018 5:57 PM UTC

}// 140/140

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luta

remix of d/10595 by u/ersagun

function u(t) {

eval(unescape(escape`󭬽󦼰󛍘󟝙󟜸󛌰󛌭󞌬󜍝󞽬󟝤󟜾󮌮󫍩󫭥󥍯󚍘󚼽󭭛󜜫󩌥󝍝󛍙󚼽󭭛󩌥󝍝󚜊󩼽󚍳󛍤󛍯󚜽󟭳󟼨󩼨󬼽󬼭󜜬󩌫󫼬󛝯󚜬󫌨󩌫󫼩󛍧󚍳󛍤󛍯󚜬󫌨󩌩󛍧󚍳󛍤󛍯󚜬󫌨󩌭󫼩󛍧󚍳󛍤󛝯󛌭󫼩󚜺󜌊󮌮󫝯󭭥󥍯󚍘󛍙󚜻󭍼󯍧󚌷󛌸󛌱󚜻󮌮󬽴󬭯󪽥󚌩`.replace(/u../g,'')))

Jul 29 2026 5:49 PM UTC

}// 130/140

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Hilbert curve #recursive

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rnbw

function u(t) {

for(c.width^=i=0;i++<45;)for(j=-6;j++<23;x.fillStyle='#ac6'+(4+(i+j)%2*2))x.fillRect((i*(b=99+C(t)*35))+(a=S(t)*600%b)-500,(j*b)+a,d=b*.9,d)

Feb 7 2019 3:57 PM UTC

}// 140/140

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zooming tiles without transform! doesn't perform very well, though

u/rnbw

(i'm surprised that that hastily-made alpha adjustment worked...)

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firegodjr

function u(t) {

c.width|=0
with(x)for(i=630;i--;stroke(),beginPath(lineWidth=10))arc(960,540,S(i/200+t)**14*S(i%2*3+t+i/10)*40+300,i/100,i/100+.03)

Jul 30 2018 4:18 PM UTC

}// 131/140

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u/magna

DNA transcription
u/firegodjr

Inspired by https://beesandbombs.tumblr.com/image/175083… #beesandbombs

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sawaxon

function u(t) {

R=R<7?(t%.6<.01?R+1:R):0;c.width|=0,x.font="520px a"
x.fillText((["Hard","Bett","Fast","Strong","Hov","Ov"][R]||"Make it  ")+"er",99,700)

Jun 6 2018 11:30 PM UTC

}// 137/140

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rodrigo.siqueira

remix of d/13699 by u/rodrigo.siqueira

function u(t) {

if(t<9)for(w=i=960;i--;x.fillRect(w+w*X/Z,w*Y/Z+540,s=18/Z/Z,s))
Y=(S(V=t*i))*S(U=i*i*V)*2.5+.2,
X=(.1+S(V/2))*S(V*1)*3,
Z=S(X/Y+X/2-11)-5.4

May 9 2019 7:19 PM UTC

}// 140/140

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Butterfly

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rodrigo.siqueira

remix of d/33673 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=3e4;i--;x.fillRect(960+X/Z,540-Y/Z,.1,t<2))r=S(w=i*i/t)/C(w),X=S(k=i/2+r**-.4)*700,Y=C(k)*700,Z=C(S(i))*4-1/r

Apr 30 2025 6:00 PM UTC

}// 140/140

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4-fold inner spiral

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MrM@_S

remix of d/2646 by u/magna

function u(t) {

x.strokeStyle=R(S(t*8)*254,0,0,.5)
for(i=300;i--;x.lineWidth=1,x.stroke())x.beginPath(),x.arc(960,540,i*9,a=t*5+i/9,a+Math.PI)

May 2 2017 12:16 AM UTC

}// 126/140

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