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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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ciaccodavide

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼🐱𞱰👻𦀺𜠴𜀪嵮𚀸𛠵𚠨𫐽𣑡𭁨𛡲𨑮𩁯𫐩𚀩𚐬𦐺𜠴𜀪嵮𚀵𚡭𚀩𚑽𞰡𤀮𬱯𫑥𚁱🐾𚁱𛡘🐽𬀮𦀦𙡱𛡙🐽𬀮𦐩𚐦𙡐𛡰𭑳𪀨𬀩𞱐𛡭𨑰𚁰🐾𮀮𫁩𫡥𥁯𚁰𛡘𛁰𛡙𚐩𞱸𛡳𭁲𫱫𩐨𚐠`.replace(/u../g,'')))}{P=[]

Nov 21 2020 8:57 PM UTC

}// 122/140

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Grid Based Random Walk

u/ciaccodavide

c.width|=1;p={X:240*~~(8.5*(m=Math.random)()),Y:240*~~(5*m())};!P.some(q=>(q.X==p.X&&q.Y==p.Y))&&P.push(p);P.map(p=>x.lineTo(p.X,p.Y));x.stroke()}{P=[]

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VictorF

function u(t) {

c.width=1920
for(i=0;i<9;i++){
x.fillRect(500+i * 100+S(t*1.5)*300,0,50,1100)
x.fillRect(500+i * 100+C(t)*300,500,50,200)
}

Nov 19 2020 1:18 AM UTC

}// 123/140

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u/Xen

welcome to the dwitter family

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ciaccodavide

remix of d/20686 by u/ciaccodavide

function u(t) {

c.width|=1
for(i=99;i--;)
x.moveTo(960+C(t*i/100)*300,530+S(t*i/100)*300),
x.arc(960+C(t*i/100)*300,530+S(t*i/300)*300,.3*i,0,9)
x.stroke()

Nov 18 2020 4:28 PM UTC

}// 139/140

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u/Xen

love the style
u/danny@hille.dk

reminds me of kinetic sculptures

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ciaccodavide

remix of d/20728 by u/Irratix

function u(t) {

c.width|=1
d=new Date()
x.fillText([...'🕛🕐🕑🕒🕓🕔🕕🕖🕗🕘🕙🕚🕧🕜🕝🕞🕟🕠🕡🕢🕣🕤🕥🕦'][d.getHours(x.font="9em'")%12+(d.getMinutes()>29&&12)]+' '+d,0,133)

Nov 20 2020 5:07 PM UTC

}// 133/140

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thanks u/Irratix

u/Xen

nice!

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rodrigo.siqueira

remix of d/20662 by u/rodrigo.siqueira

function u(t) {

x.beginPath()
r=(i)=>S(t*6+i/2.7-3.6)*150+i
x.moveTo(960+C(t)*480,540+S(t)*480)
x.lineTo(r(960),r(540))
x.lineWidth=.7
t<6.28&&x.stroke()

Nov 18 2020 4:10 PM UTC

}// 137/140

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Fairy Star (Heptagram) #spirograph

u/danny@hille.dk

very aesthetically pleasing

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ciaccodavide

function u(t) {

m=(d=new Date()).getMinutes(h=d.getHours(x.font="9em'"))
x.fillText((k=String.fromCharCode)(55357)+k(56656+(h%12||12)+(m>29?11:-1)),888,606)

Nov 20 2020 1:42 PM UTC

}// 140/140

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Real time emoji clock

u/ciaccodavide

Add throw(d) to show the datetime
u/ciaccodavide

#clock

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Xen

remix of d/3199 by u/Xen

function u(t) {

with(x)for(t?X.push([Date.now()/t%2e3,i=X.length]):X=[];i--;fill())arc(X[i][0]-=T(i),X[i][1]+=3,49,!beginPath(fillStyle=R(9,9,X[i][1]/5)),9)

Nov 19 2020 6:19 PM UTC

}// 140/140

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Blue-Goo

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taupelink

remix of d/20630 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,h=k*S(S(S(C(p=Y*S(q=X%3*2-2)-2+Y%1.5)))),x.fillStyle=R(h*p,h*q,2*h)

Nov 17 2020 1:17 AM UTC

}// 140/140

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d/20654

u/joeytwiddle

Entrance to sietch as perceived by an insect with compound eyes
u/tomxor

Nice description, (and dweet) :)

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dnmc

function u(t) {

r=Math.random
j=960+S(t)*400
k=540+C(t)*400
for(i=0;i++<80*t;){
j+=r()*8-4
k+=r()*8-4
x.fillStyle=R(0,(S(t*4)+1)*127)
x.fillRect(j,k,6,6)
}

Nov 17 2020 7:07 AM UTC

}// 139/140

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It's the circle of life...

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danny@hille.dk

remix of d/20689 by u/yonatan

function u(t) {

q=c.width=99;for(m=20;m--;)for(n=i=q;i--;x.fillRect(i,a*(25-m),2,q,x.fillStyle=R(m*9)))for(a=j=3;j--;a+=S(((t/m*q+i)*S(m*k))*k/9)/k)k=4**j

Nov 18 2020 7:25 PM UTC

}// 139/140

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golf and play

u/danny@hille.dk

-2 bytes -> q=c.width=99;for(m=20;m--;)for(n=i=q;i--;x.fillRect(i,a*(25-m),2,q,x.fillStyle=R(m*9)))for(a=j=3;j--;a+=S((t/m*q+i)*S(m*k)*k/9)/k)k=4**j*