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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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𭰽𞐶𜀬𮁛𩠽𙱦𪑬𫁒𩑣𭀧𧐨𜀬𜀬𪐽𚁣𛡷𪑤𭁨𯀽𜀩𛁩𚐻𪐭𛐻𮁛𩡝𚁷𚰨𤰨𨠩𚠳𚱓𚁰👩𚡩𚱴𚐪𤰨𬐽𪐪𪐪𪐩𚐯𚁚🐶𚱃𚁢𚐪𜰫𠰨𬀩𚡓𚁱𚐩𚡷𛀵𝀰𚰨𠰨𬐩𛑃𚁢𚱴𚐩𛱚𚡷𛁳🐱𚰱𝐰𛱚𛱚𛁳𚐩𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮰨𨠽𪐥𝠫𭀩𚠶𜁽𛀹𞐥𛀶𝐥𨀻`.replace(/u../g,'')))

Jan 26 2019 7:00 AM UTC

}// 140/140

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for(w=960,x[f='fillRect'](0,0,i=(c.width|=0),i);i--;x[f](w+(S(b)*3+S(p=i*i+t)*S(q=i*i*i))/(Z=6+C(b)*3+C(p)*S(q))*w,540+(C(q)-C(b+t))/Z*w,s=1+150/Z/Z,s))x.fillStyle=hsl(${(b=i%6+t)*60},99%,65%

u/adaq

d

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katkip

function u(t) {

t||(j=0);for(i=384;i--;)x.fillStyle=R(0,C(i/3<<399+j/3)*128+128),x.fillRect(i*5,j*5,5,5);j++

Jan 29 2019 6:08 PM UTC

}// 92/140

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Binary thing

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katkip

remix of d/11977 by u/katkip

function u(t) {

c.width*=1;for(i=900;i--;)k=S(t+i)*t,l=500-C(k-i)*500,x.fillRect(960+C(k)*l,540+S(k)*l,10,10)

Jan 28 2019 12:50 PM UTC

}// 93/140

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White hole. I rarely wash myself because I'm lazy :(

u/katkip

Haha you guys liked this dweet only to be the first comment more visible lmao?

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pavel

function u(t) {

t?c.width|=0:(i=A=240,j=B=80,p=q=-9)
x[f='fillRect'](i+=p=i<7*A?p:-p,840,A,A)
x[f](j+=q=j>0?q:-q,1e3,B,B)
j>i-B&&(j=i-B,p+=s=(q-p)/5,q-=s*9)

Jan 24 2019 10:56 PM UTC

}// 140/140

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Perfect elastic collision #physics #simulation

Show more comments…
u/pavel

Big block is 9x the weight of the little block
u/katkip

This is impressive. Idea from 3blue1brown?
u/iverjo

Wow!
u/bekfast2390

This is like ping-pong!
u/joeytwiddle

Some context: https://www.youtube.com/watch?v=HEfHFsfGXjs 3Blue1Brown
u/katkip

hi, PI
u/Undefined

A fellow 3b1b fan, I see :D
u/joeytwiddle

#3b1b
u/ivylab

I always wait until the big one gets way up to the left side and it goes bam bam bam bam bam :)

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f8f82804

remix of d/11919 by u/mxfh

function u(t) {

for(c.width|=i=384;i--;x.fillRect(960-w/2+e,4*i,w+e,4)){y=i/80-2;w=y>.7?3e3:(1-y*y)**.5*640;e=T(t/9+i*w);x.fillStyle=`hsl(${-y}rad 99%50%)`}

Jan 24 2019 8:12 PM UTC

}// 140/140

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#minimal #outrun #glitch #sunset

u/f8f82804

d/11931
u/pavel

Omitting the space in 99%50% does not work in Safari, everything is black.
u/f8f82804

yeah safari stinks
u/f8f82804

try "for(c.width|=i=384;i--;x.fillRect(960-w/2+e,4*i,w+e,4))y=i/80-2,w=y>.7?3e3:(1-y*y)**.5*640,e=T(t/9+i*w),x.fillStyle=hsl(${-y}rad 99% 50%)" which should work and is still <140
u/bekfast2390

easrdfghj

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f8f82804

remix of d/11962 by u/f8f82804

function u(t) {

c.width=32;d=new Date/1e3%86400;j=120;do{"縿Ϡ庽纵粇皷皿簡线粧碾⪿䘮㨿嚿ᒿ".charCodeAt(d&15)&1<<--j%20&&x.fillRect(2+j/5|0,j%5+7,1,1)}while(j%20|0||(d>>=4))

Jan 27 2019 11:04 PM UTC

}// 140/140

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#hex #clock -- shows count of seconds since #UTC midnight (ignoring leap second corrections since epoch)

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Xen

remix of d/11987 by u/katkip

function u(t) {

for(i=55;i--;)for(j=55;j--;x.fillRect(960+C(i+t)*i*899/i,540+S(j+t)*i*999/j,20,20))x.fillStyle=R(i*5,0,j*5,.03)

Jan 29 2019 9:25 PM UTC

}// 111/140

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Xen

remix of d/11952 by u/stellartux

function u(t) {

for(x.beginPath(i=7e2,c.width=5e2);i--;)x.arc(2*i*C(i),47+i/3,75+S(t-i)*19,0,t);x.fill('evenodd')

Jan 28 2019 6:16 PM UTC

}// 97/140

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#waitforit

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ETHproductions

function u(t) {

i=0;for(c of"社⪿䘮㨿䚿ҿ瘮粟䟱㸰沟䈟糟砿㨮᤿笮夿⚲ߡ縏㸟綟沛ྃ亹翿")for(;~++i%20;)c.charCodeAt()>>i%20&1&&x.fillRect((i/5|0)%36*40,(i%5+6*(i/180|0))*40,40,40)

Jan 25 2019 5:40 AM UTC

}// 132/140

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3x5 pixel alphabet, each letter encoded in 15 bits

u/katkip

hehe cool
u/metamero

create your own glyph with d/11967
u/metamero

there is an error in this code. replace to i=-1; so it can draw the first pixel

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katkip

remix of d/11988 by u/katkip

function u(t) {

t||(j=0);for(k=3;k--;){for(i=384;i--;)x.fillStyle=R(T(i*j)*30,C(i^j+t)*50+90,T(j&i+t)*40),x.fillRect(i*5,j*5,5,5);j>216?j=0:j++}

Jan 29 2019 6:13 PM UTC

}// 128/140

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u/13thptr

DF vibes