Dwitter - javascript demos in 140 characters

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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username

remix of d/9690 by u/donbright

function u(t) {

for(c.width|=i=0;i<5e3;i++)Φ=Math.acos(1-2*i/99/99),Θ=10.1664*i,x.fillRect(500*(2+C(Θ)*S(Φ)*S(t)+C(Φ)*C(t)),500*(1+S(Θ)*S(Φ)),9,9)

Nov 26 2019 3:53 PM UTC

}// 130/140

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half a sphere

u/username

#randomremix no 38
u/f8f82804

#d3 #sphere #model
u/fourier.space

If I blink, it rotates both ways
u/username

u/fourier.space actual f, I see it too
u/username

u/fourier.space I missed to mention you on d/16759

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adroitwhiz

function u(t) {

eval(unescape(escape(`挮睩摴栽愽㜶㠻䐽娽㹸⹭潶敔漨䄫娬䈩⭸⹡牣呯⡁ⱂⱁⱂ⭚ⱓ⡴⨸⭩⤪ㄲ⬱㈩⭸⹬楮敔漨䄬䈫娩㭦潲⡩㴳㐰㭩ⴭ㭁㴨椥㌴⤪㐸ⱂ㴨椯㌴簰⤪㐸ⱄ⠲㐩ⱄ⠭㈴⤩㭸⹳瑲潫攨⤠`).replace(/u(..)/g,"$1%")))

Nov 27 2019 12:04 PM UTC

}// 125/140

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u/Xen

nice smooth
u/katkip

Smoooooth

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Xen

remix of d/16758 by u/katkip

function u(t) {

t?x.fillRect(X+=S(A+=X*Y/9)*9,Y+=C(A)*9,9,9):(X=960,Y=540,A=0)

Nov 29 2019 6:27 PM UTC

}// 62/140

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62 bytes (possible juggle math for smaller?)

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katkip

remix of d/16757 by u/katkip

function u(t) {

t||(X=960,Y=540,A=0);x.fillRect(X+=S(A+=X*Y/9)*9,Y+=C(A)*9,9,9)

Nov 29 2019 12:42 PM UTC

}// 63/140

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63 bytes

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katkip

function u(t) {

t||(X=960,Y=540,A=0);x.fillRect(X+=S(A+=X/9+Y/3)*10,Y+=C(A)*10,9,9)

Nov 29 2019 12:39 PM UTC

}// 67/140

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shortest deterministicly-random walker?

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katkip

function u(t) {

t||(s=0,X=960,Y=540)
x.fillRect(X,Y,10,10);
X+=(r=Math.round)(S(s))*10,Y+=r(C(s))*10
s+=T(t)

Nov 27 2019 12:28 PM UTC

}// 92/140

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nobody's ant

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rodrigo.siqueira

remix of d/16023 by u/rodrigo.siqueira

function u(t) {

for(c.width=a=400;a--;)x.arc(99,99,(2+S(a*2+t)+a*t%500),1.61,7.8),x.globalAlpha=.3,x.fillRect(a,188+20*S(a)*C(a/5)+C(a/2)*3,5,58);x.stroke()

Nov 24 2019 8:56 PM UTC

}// 140/140

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Kraftwerk's Antenna with city skyline. 📡

u/DataMeta

📻📺📶
u/joeytwiddle

#scene #tribute

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Blacklink

function u(t) {

function d(a,b,s,c){if(s<0)return
x.font=s*99+"px a"
x.fillText(c,a*99,b*99)
}c.width|=0
d(5,8,7,"🌍")
d(9+3*S(t),6+3*S(t),2+4*C(t),"🛰️")

Nov 25 2019 1:26 PM UTC

}// 138/140

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Orbiting Satellite

u/Xen

nice idea

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DataMeta

function u(t) {

x.beginPath(x.fill());for(i=9;i--;)t<2?x.arc(960+270*S(t*3)+i*3,540-240*C(t*3)-i*3,64*C(t*.8),0,7):0

Nov 26 2019 4:27 AM UTC

}// 100/140

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Ensō

u/katkip

you did it backwards but ok
u/DataMeta

There is no right or wrong way to draw one
u/DataMeta

It is an act of meditation and an expression of the mind and body's state in the moment

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katkip

function u(t) {

eval(unescape(escape`𦀽𞐶𜀬𦐽𝐴𜀬𦠽𝀰𜀭𭀪𞀻𮀮𩡩𫁬𤱴𮑬𩐽𘠣𜀰𜀲𘠻𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀲𩐳𛀲𩐳𚐻𩡯𬠨𪐽𞐻𪐭𛐻𚑸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𦠪𜐰𜁽𛀹𞐥𛀵𜀥𚑠𛁸𛡦𪑬𫁒𩑣𭀨𦀭𦠯𝐬𦐭𦠯𝐬𦠯𝀬𦠯𝀩𛁘𚰽𠰨𦀫𦠯𞐩𚡚𛁙𚰽𤰨𦐫𦠯𞐩𚡚𛁚𛰽𭀠`.replace(/uD./g,'')))

Nov 27 2019 11:56 AM UTC

}// 133/140

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Zooming out from the solar system