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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pavel

function u(t) {

for(c.width|=k=0;k<50*t;x.ellipse(960,540-750*(i%2-.5)*y,r=400*(1-y*y)**.5,r/3,0,a=(2*i+k++%2-t)%16*.393,a))i=k/98|0,y=k%98/49-1
x.stroke()

Apr 9 2019 12:06 AM UTC

}// 139/140

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Single stroke beach ball sketch

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Jezza

function u(t) {

c.width|=0;for(i=0;i<9;i++)x.fillRect(400+i*100+S(t)*300,400,50,200);x.globalAlpha=0.3;for(X=12;X--;)x.drawImage(c,T(X+t)*200,T(X-t)*200);

Apr 10 2019 7:55 AM UTC

}// 138/140

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#default

u/magna

Awesome! I'm a fan of defaults!

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robotman_

function u(t) {

x.fillStyle=R(c=S(t/3)*64+64,c,c)
x.fillRect(960+S(t)*300+S(t/5)*99,540+C(t)*300+C(t/5)*99,9,9)

Apr 12 2019 9:07 PM UTC

}// 95/140

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Wait for it

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dmilin

function u(t) {

c.width=1000
r=Math.random;for(i=0;i<c.width;i++)x.fillRect(i,0,1,r()*350*S(t)+350),x.fillStyle=R(i*10*S(t)%255,i*10*C(t)%255,i*10*T(t)%255)

Apr 13 2019 7:29 PM UTC

}// 140/140

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Voice In Static

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username

remix of d/13225 by u/username

function u(t) {

x.font=`9em'`

x.fillText(`ry o change his tttttex`,t=code.length,t)

if([...code].reduce((a,c)=>a^c.charCodeAt(0)+t,t)!=232)code+='b'

Apr 13 2019 2:13 PM UTC

}// 134/140

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d/13225 :) ugly solution

u/metamero

"m"

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username

remix of d/13223 by u/username

function u(t) {

x.font=`9em'`

x.fillText(`tryToChangeThisText`,t=code.length,t)

if([...code].reduce((a,c)=>a^c.charCodeAt(0),t)!=209)code+='.'

Apr 13 2019 1:59 PM UTC

}// 128/140

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(need to view it isolated in order to work d/13224) rules: only change the string

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username

remix of d/13194 by u/username

function u(t) {

x.font=code.length/9+`em'`

x.fillText('try to change this text',0,999)

if([...code].reduce((a,c)=>a+c.charCodeAt(0),0)!=11111)code+='Ɖ'

Apr 11 2019 10:55 PM UTC

}// 137/140

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u/username

#checksum
u/username

need to view it isolated: d/13196

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KilledByAPixel

function u(t) {

for(i=999;i--;)X=Y=Z=M=N=O=194,Z*=T(i/M),Y*=C(Y/O),M-=(i-X),X*=T(Z+t),N=~(X-i),x.fillStyle=R(M,Y,O,1),x.fillRect(943+X,359+.41*N,.1*Z,.1*Z)

Apr 9 2019 10:50 PM UTC

}// 139/140

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Same auto gen line now (1426 Bad / 114 Good)

u/joeytwiddle

I'm not sure what I see. Cloud City? Anyway I like it!

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Jezza

remix of d/13194 by u/username

function u(t) {

x.font=code.length/9+`em'`

x.fillText('jezza',99,999)

if([...code].reduce((a,c)=>a+c.charCodeAt(0),0)!=9209)code+='{'

Apr 13 2019 10:08 AM UTC

}// 119/140

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Solving @username's puzzle!

u/Jezza

See: https://www.dwitter.net/d/13194

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KilledByAPixel

function u(t) {

K=15;for(J=0;J<1080;J+=K)for(I=0;I<1920;I+=K)Z=M=N=558,X=I+t/4,Y=J-540,N%=Y,M=N*S(X*N),x.fillStyle=R(M,M,N,1),x.fillRect(I,J,K,K)

Apr 11 2019 5:39 PM UTC

}// 129/140

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More messing with the raster draw option. I tweked this one a bit by hand too.