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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HellMood

function u(t) {

for(i=64;i--;){l=5000/(i-32);for(k=128;k--;)m=l*(k-64)/35,n=l+t*500,x.fillStyle=R(0,(n^m)&255),x.fillRect(k*12,i*12,12,12)}

May 6 2020 4:57 PM UTC

}// 123/140

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Floorcast - (1st dweet, tips welcome =)

u/jylikangas

Welcome! Some Dwitter tips in this version... for(i=64;i--;)for(l=5000/(i-32),k=128;k--;x.fillRect(k*12,i*12,12,12))x.fillStyle=R(0,(l+t*500^l*(k-64)/35)&255)
u/HellMood

Thank you =)
u/sigveseb

Welcome!

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katkip

function u(t) {

eval(unescape(escape`𩠽𚁸𛁹𛁮𚐽🡮🠰🱦𚁓𚁹𚠲𛑴𛰵𚐭𠰨𮀪𜠩𛁓𚁸𚠲𚐭𤰨𮐪𜠫𭀯𜰩𚱴𛰴𛁮𛐱𚐺𤰨𮀪𮐩𚠱𜠸𚰱𜠸𒡦𫱲𚁩🐱𜠰𞱩𛐭𞰩𬐽𪐯𝠰𚰮𝐬𮀮𩡩𫁬𤱴𮑬𩐽𤠨𩠨𬐬𭀬𝐩𚐬𮀮𩡩𫁬𤡥𨱴𚀰𛁩𚠹𛀹𛀹𚐻𮀮𩁲𨑷𢑭𨑧𩐨𨰬𞐬𜀩`.replace(/uD./g,''))); /// hell ///

May 6 2020 12:24 PM UTC

}// 140/140

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If you look at this long enough, you can see faces and it's cool

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HellMood

function u(t) {

for(i=64;i--;)for(k=64;k--;)a=i-32-S(t*4)*15,b=k-32-S(t*3)*12,c=250-a*a-b*b,d=-c/8,x.fillStyle=R(c,d+c,d+S(d)*9),x.fillRect(k*18,i*18,18,18)

May 6 2020 6:12 PM UTC

}// 140/140

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Marbelous

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Xen

remix of d/18109 by u/Xen

function u(t) {

for(i=19;i--;x.arc(i*99+S(i)*99,C(i)*199+t*83%1200,500-t*21,!x.beginPath(x.stroke()),t))x.strokeStyle=`hsl(${t*9e9%9+40},${t**t%97}%,${t}%)`

May 7 2020 7:18 PM UTC

}// 140/140

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#cavern v0.5

u/katkip

Awesome!

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GreenBeans

function u(t) {

c.width=1920
x.fillStyle=R(0,255,0)
x.font="80px Arial"
x.fillText('mine',800,600)
for(i=0;i<81;i++)
x.fillText('beans',i%9*300,50*i*T(t))

May 8 2020 6:26 PM UTC

}// 138/140

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nml

function u(t) {

c.width=1920
x.fillStyle=(R(99*S(t),99*C(t),99*T(t)))
for(i=0;i<10000;i++)
x.fillRect(-40000+i*100+T(t)*300,40,50,2000)

May 8 2020 6:08 PM UTC

}// 119/140

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some trippy rainbow barcode thing

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Meepster99

function u(t) {

m=Math
if(t==0)a=b=.3
c=m.floor(m.random()*3)
a=(a+[0,1,2][c])/2
b=(b+[0,1,0][c])/2
x.fillStyle=R(255*a)
x.fillRect(960*a,1080*(1-b),5,5)

May 8 2020 5:58 PM UTC

}// 138/140

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nml

function u(t) {

c.width=1920
i=0
i=i*i*10
x.fillStyle=`hsla(${i+t*20},90%,50%,.3)`
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*400,i*100,50,200)

May 8 2020 5:56 PM UTC

}// 127/140

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some rainbow rectangle steps

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Lukieeee

function u(t) {

with(x)for(i=50;i--;beginPath(fill()))x.fillStyle=R(o=i*t,0,o),arc(420+i*C(T(i))*i,540+i/t*T(C(i-t))*i,256/t,0,7);x.drawImage(c,-t,0)

May 8 2020 5:46 PM UTC

}// 133/140

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u/katkip

haven't you copied this from me and changed only the color?
u/katkip

i can see that clearly

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katkip

function u(t) {

eval(unescape(escape`𩠽𚁸𛁹𛁮🐵𚐽🡮🠰🱦𚁦𚁹𛁸𛰲𛁮𛐱𚐪𜠬𮐯𜠭𮀯𜠭𭀪𜠬𫠭𜐩𞡓𚁸𚐻𩡯𬠨𪐽𜠴𜀻𪐭𛐻𚑸𛡦𪑬𫁓𭁹𫁥👒𚁦𚁩𛁴𛀵𚐪𜠵𝐬𩠨𪐬𭀬𝠩𚠲𝐵𚐬𮀮𩡩𫁬𤡥𨱴𚁩𚠸𛀰𛀸𛀸𚐻𮀮𩁲𨑷𢑭𨑧𩐨𨰬𜀬𞀩`.replace(/uD./g,'')));

May 8 2020 5:38 PM UTC

}// 120/140

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f=(x,y,n=5)=>n>0?f(f(y,x/2,n-1)*2,y/2-x/2-t*2,n-1):S(x);for(i=240;i--;)x.fillStyle=R(f(i,t,5)*255,f(i,t,6)*255),x.fillRect(i*8,0,8,8);x.drawImage(c,0,8)

u/DaSpider

#recursive