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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Xen

remix of d/14662 by u/Xen

function u(t) {

for(I=1e3;--I;x.fillRect(I,t*99,X>1,T=7))for(W=X=I/99-5,Z=Y=t-2;T--;Y=2*U*Y+Z)X=(U=X)*X-Y*Y+W

Jun 18 2019 5:16 PM UTC

}// 93/140

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93bytes #mandelbrot #fractal

u/username

weeeeeeeeeeeeeeeeeeeeeeeeeeeeeell, golfing at all costs?
u/Xen

yes!... EVERY cost! lol

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katkip

function u(t) {

t||(a=b=1);for(i=40;i--;)x.fillRect(a*100,b*100+i*40,4,4),a=S(a+i)*S(b)+t,b=S(-a+i)+S(-b+i)

Jun 18 2019 9:51 AM UTC

}// 91/140

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Racing #chaos #pattern

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KilledByAPixel

remix of d/14570 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀲𩐳𛀲𩐳𚐻𭱩𭁨𚁸𚑦𫱲𚁩🐱𜠰𞱩𛐭𞱲𩑳𭁯𬡥𚁦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𪐪𜰭𜰰𯐠𞐹𙐵𜀥𨀬𩡩𫁬𥁥𮁴𚀢𤁲𪑤𩐢𛀳𞐫𜠹𚡓𚁩𛰹𚱴𚠹𚐯𜠬𜑥𜰬𜐸𜰰𚐩𚑢𩑧𪑮𤁡𭁨𚁳𨑶𩐨𩡯𫡴🐢𝰲𩑭𘁩𫑰𨑣𭀢𚐩𛁣𫁩𬀨𬡥𨱴𚀰𛁩𚠹𛀲𩐳𛀹𚐩`.replace(/u../g,'')))

Jun 18 2019 9:36 PM UTC

}// 139/140

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Happy Pride Month!

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veubeke

function u(t) {

t?x.rotate(.1):x.translate(960,540)
for(i=M=(6+Math.random()-t/4)*80;i-->0;x.fillRect(0,i,M/10+5,1))x.fillStyle=`hsl(0,60%,${M/13+50/M*i}%)`

Jun 17 2019 8:11 PM UTC

}// 140/140

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u/joeytwiddle

#flower

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KilledByAPixel

function u(t) {

c.width|=F=W=>250*W(b=i*.785)
for(i=8;i--;)
for(j=0;j<4;)
x[j++?'arc':'moveTo'](960+F(C),540+F(S),250,z=t/3+j/.637+b,z)
x.fill('evenodd')

Jun 16 2019 6:23 PM UTC

}// 137/140

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#beesandbombs 🐝 💣

u/katkip

perfection

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rodrigo.siqueira

remix of d/14643 by u/rodrigo.siqueira

function u(t) {

var i=A=a=b=1+t*1.3,s=110
for(i=2e4;--i;)x.fillStyle=R(-a*15*(K=t%2),-a*4*K),x.fillRect(1680+a*s,s+b*s,1,1),a=1-b+Math.abs(a)/2,b=A,A=a

Jun 18 2019 11:38 AM UTC

}// 135/140

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Ornament details from the Gingerbreadman #attractor #gingerbreadman

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rodrigo.siqueira

remix of d/14641 by u/rodrigo.siqueira

function u(t) {

X=Y=t*400
for(i=3e4;--i;x.fillRect(800+X,350+Y,1,1))X=80-Y+Math.abs(Y=X/1.0001)

Jun 18 2019 9:14 PM UTC

}// 79/140

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Gingerbreadman, golfed and clean code. I just added "/1.0001" to get some spirals. #gingerbreadman

u/katkip

this one is super cool but i got bored of this man
u/joeytwiddle

Shuriken

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username

remix of d/14640 by u/username

function u(t) {

with(x)for(transform(X=13,0,0,X,159,540),fillText('𝘼ꅐꏂꇙꄲꂵꏂ ꁝꋬꋊ꒯ꅐꋪ꒐꓄꒐ꋊꍌ',5,3);X-->9;fill(new Path2D(`M9 3a9 9 0 0 0 0-6l-5 7`)))rotate(.78)

Jun 17 2019 8:44 PM UTC

}// 138/140

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awesome handwriting

u/Xen

sexy handwriting!
u/katkip

very sexy

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KilledByAPixel

function u(t) {

H='♥'
eval(unescape(escape`𩡯𬠨𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛁩👆🐲𩐳𛁆𚐻𪐭𛐻𮀮𩡯𫡴🐢𝰰𩑭𙰢𚑸𛡣𫁥𨑲𤡥𨱴𚀨𤰨𪐩𚠱𩐹𛑴𚡩𛰵𚐥𡠬𪐪𞐥𡠬𪠽𪐥𞐬𪠩𞱸𛡳𪁡𩁯𭱃𫱬𫱲🐢𘱆𡡆𘠻𩡯𬠨𪐽𞐻𛐭𪐻𮀮𩡩𫁬𥁥𮁴𚁈𛀶𜰲𛀸𞀰𚐩𮀮𬱨𨑤𫱷𠡬𭑲👩𚠹𚰴𝐪𤰨𭀪𝀩`.replace(/u../g,'')))

Jun 18 2019 2:31 AM UTC

}// 137/140

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Total Eclipse of the Heart ♥ ~ Version 2

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rodrigo.siqueira

remix of d/14639 by u/rodrigo.siqueira

function u(t) {

if(t<2){A=Z=a=b=-.1+t/15;s=90
for(i=1e4;--i;)x.fillStyle=R(a*50,b*30,S(b)*s),x.fillRect(800+a*s,310+b*s,.7,.6),
a=1-b+Math.abs(a),
b=A,A=a}

Jun 17 2019 1:59 PM UTC

}// 139/140

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The Gingerbread Man #attractor from dynamical systems theory. "The Gingerbreadman Map is chaotic in the filled region and stable in the six hexagonal regions."

u/katkip

#chaos
u/rodrigo.siqueira

"Even the simplest mathe-matical expressions, when interpreted as dynamical systems, yield fractals." (Robert L. Devaney) #gingerbreadman