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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Bugsy

function u(t) {

for(i=(b="!").length;i--;x.font='99px x',x.fillText(String.fromCharCode(a),99*i,99)){(a=b[i].charCodeAt(0))<"n".charCodeAt(0)?a=a+13:a=a-13}

Jun 15 2018 9:24 PM UTC

}// 140/140

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This Dweet does ROT13 if you type in lower case letters in place of the '!'

u/Bugsy

Thanks to @firegodjr on the Discord for help with the last few characters

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magna

remix of d/8594 by u/magna

function u(t) {

c.width|=0
x.font='66px"'
for(Y=16;Y--;)for(X=29;X--;)x.fillText([...'🕛🕐🕑🕒🕓🕔🕕🕖🕗🕘🕙🕚'][(X+Y+t*9|0)%12],X*66,Y*66+66)

Jun 13 2018 5:10 PM UTC

}// 114/140

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firegodjr

remix of d/8618 by u/firegodjr

function u(t) {

F=a=>((p=1.62)**a-(-p)**-a)/0.089
with(x)for(c.width|=D=8,x.m=translate,m(8e2,9);D--;)arc(0,0,F(D+2),0,q=1.57),m(0,F(D)),rotate(q),stroke()

Jun 17 2018 6:14 PM UTC

}// 139/140

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robbyg

remix of d/8103 by u/robbyg

function u(t) {

x.fillText('╲╱'[new Date%2],t*600%2e3,t*10/3)

Jun 14 2018 9:42 PM UTC

}// 45/140

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#short #maze

u/robbyg

Only 7 characters longer than 10 PRINT CHR$(205.5+RND(1)); : GOTO 10 ;)
u/Xen

x.fillText('╲╱'[1+S(t*t)|0],t*600%2e3,t/.3)

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magna

function u(t) {

for(i=99;i--;)x.fillText`${C(t/i)*2e3}${t*99%1e3}`

Jun 15 2018 11:10 PM UTC

}// 50/140

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Messing around with tagged templates for a function call with multiple arguments

u/joeytwiddle

#trick Try console.log`...` The first arg is ['', '']

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tobias

function u(t) {

for(n=95,i=0;h=0|i/43,w=i%43,i++<516;)x.setTransform(1,0,w&1?.5:-.5,1,(w>>1)*n-(h&1?49:n),h*n),x.fillStyle=R(n*S(w+h+t)),x.fillRect(0,0,n,n)

Jun 12 2018 10:48 PM UTC

}// 140/140

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magna

remix of d/8594 by u/magna

function u(t) {

x.font='25px"'
for(Y=43;Y--;)for(X=76;X--;)x.fillText([...'🌑🌘🌗🌖🌕🌔🌓🌒🌑'][(S((X*Y/99)+t*5)+1)*4.5|0],X*25,Y*25+25)

Jun 13 2018 1:42 PM UTC

}// 111/140

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u/zanella

Funny thing - it seems as if the moons are moving back-and-forth as if it was a flag. :)

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New_Core

function u(t) {

for(b=c.width|=i=40;i--;x.fill())x.beginPath(),x.fillStyle=`hsl(${i*i},99%,50%)`,x.ellipse(i*199%b+99*S(a=t+i),1200-a*i*20%1300,80,99,0,0,7)

Jun 12 2018 5:06 PM UTC

}// 140/140

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Almost balloons..

u/lionleaf

#baloons #colorful

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robbyg

remix of d/8556 by u/Xen

function u(t) {

t&&x.drawImage(c,0,3)
for(Z=i=360;i--;x.fillRect(i*9-C(t+t-S(i/19))*Z-Z,0,Z,3))x.fillStyle=`hsl(${S(i)*Z},${z=25+i%55}%,${z*.8}%)`

Jun 12 2018 9:12 PM UTC

}// 130/140

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u/Xen

looks tasty, makes me hungry!
u/joeytwiddle

Yes, yummy. #rainbow

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DataMeta

remix of d/8266 by u/DataMeta

function u(t) {

c.width|=0;p=Math.PI;k=42;for(i=3;i<32;i++){x.lineWidth=i+4;x.beginPath();x.arc(960,540,i*36+S(t/p*i)*k,i*p+S(t-i),i**i);x.stroke()}

Jun 12 2018 9:03 PM UTC

}// 132/140

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Decrease k for a more mellow experience, increase it (up to 108) for more intensity

u/joeytwiddle

*Xen puts in 109*
u/Xen

That 2e2 Though ;-)