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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DaSpider

remix of d/17828 by u/KilledByAPixel

function u(t) {

for(z=c.width|=j=2;j--;)for(i=780;i--;x.fillRect(940+C(a=i/127+1)*250,1e3+S(a)*39,30,j?-t*150:-1e3))x.fillStyle=R(j*99,j*199,j*z,j?.04:.005)

Mar 3 2020 9:47 PM UTC

}// 140/140

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Not a #Glass half empty kind of guy...

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Unum

remix of d/17584 by u/New_Core

function u(t) {

c.style.filter=`blur(5px)contrast(2e3%)`
for(c.width|=i=99;i--;)x.fillRect(960+600*S(t+i),440+400*C(t+i*2),50,100)

Mar 5 2020 7:26 PM UTC

}// 114/140

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gpolonus

remix of d/17847 by u/gpolonus

function u(t) {

c.width|=0
s=n=>(n+1)*127
for(i=-1;i++<80;)for(j=-1;j++<72;){x.fillStyle=R(s(S(t*i*10)),s(C(t)),150,1);x.fillRect(i*24,j*15,24,15)}

Mar 5 2020 6:49 PM UTC

}// 131/140

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In your face #trippy #colors #color

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katkip

function u(t) {

eval(unescape(escape`𪑦𚀡𭀩𮱱👛𧐻𩡯𬠨𪐽𞐹𞱩𛐭𞰩𬐮𬁵𬱨𚁻𮀺𞐶𜀬𮐺𝐴𜀬𨐺𪐪𜀮𝠹𯐩𯑦𫱲𚁩🐱𞐻𪐭𛐻𚑦𫱲𚁯𘁯𩠠𬐩𮱸𛡦𪑬𫁒𩑣𭀨𫰮𮀬𫰮𮐬𝐬𝐩𛁯𛡸𚰽𠰨𫰮𨐩𛁯𛡹𚰽𤰨𫰮𨐩𞱩𩠨𩡲𨑭𩐥𜠲🐽𜀩𫰮𨐫👯𛡡𛰹𞐹𯐻𮀮𩱬𫱢𨑬𠑬𬁨𨐽𛠱`.replace(/uD./g,'')))

Mar 3 2020 8:37 PM UTC

}// 131/140

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gpolonus

function u(t) {

c.width|=0
s=n=>(n+1)*127
for(i=-1;i++<80;)for(j=-1;j++<72;){x.fillStyle=R(s(S(t*i)),s(C(t*j)),s(C(t*i*j)),1);x.fillRect(i*24,j*15,24,15)}

Mar 5 2020 2:04 PM UTC

}// 138/140

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Pixels #color #colors

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gpolonus

function u(t) {

f=(a,y)=>x.fillRect(a,y,9,9)||f
t||c.addEventListener('mousemove',e=>((a,y)=>f(a,y)(2e3-a,1e3-y)(a,1e3-y)(2e3-a,y))(e.x*3.4,e.y*3.4))

Mar 3 2020 7:17 PM UTC

}// 133/140

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Shorter 4 mouse cursors

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katkip

function u(t) {

c.style.filter=`invert()`;for(x.globalAlpha=.02,i=99;i--&&t<6.28;)x.fillRect(960+S(t)*(1+S(i*i*i/1e5))*99,99+i*9+C(t)*19,9,9);

Mar 2 2020 4:05 PM UTC

}// 126/140

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#glass lamp

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gpolonus

remix of d/17827 by u/gpolonus

function u(t) {

t?0:p=q=0
f=(a,b,c,d)=>x.moveTo(a,b)|x.lineTo(c,d)|x.stroke()
onmousemove=e=>((a,b)=>f(a,b,q,p)|f(2e3-a,b,2e3-q,p)|(q=a,p=b))(e.x*3.4,e.y*3)

Mar 4 2020 6:44 PM UTC

}// 140/140

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Mirror lines #interactive

u/gpolonus

The cursor if off in the y direction. I wanted to change the 3 multiplier to 3.4 but couldn't figure out where to save characters. Any suggestions would be much appreciated!

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BriSeven

remix of d/528 by u/BriSeven

function u(t) {

for(i=4;i--;)x.fillStyle=R((d=(i+4)*S(t)*7+119*(i+4))%256,d/1.4%256,d/7%256,.1),x.fillRect(440*i+333*S(1.3*t%i)+5,300*C(t/13)+500,20,40)

Mar 4 2020 1:32 AM UTC

}// 136/140

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remix of an older candycane dweet. #slowrender #glass

u/BriSeven

Okay I admit this is sort of low effort, but maybe someone can reuse the color trick to make something truly awesome.
u/BriSeven

in other news: glass sponges are a thing that exists.
u/BriSeven

https://twitter.com/lorenschmidt/status/1234…

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Xen

remix of d/17803 by u/Xen

function u(t) {

with(x)t?fillRect(C(S(t*8))*90-99,t*199,699,9,fillStyle=R(z)):fillRect(!fillRect(0,0,z=2e3,z,fillStyle="#00a"),800,z,z,fillStyle="#ff0")

Mar 3 2020 4:46 PM UTC

}// 136/140

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#Sonic Level Transition: Sonic2

u/RealPeha

It would seem, what does Ukraine have to do with it?
u/cowberry

Ukrainr -> Belarus 30%
u/cowberry

*Ukraine