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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BackendForth

function u(t) {

x.fillStyle=R(t,S(t*3.14)*206,S(t*6.8)*206)
x.fillRect((t-t%1)%10*192,792,192,288)
x.drawImage(c,0,0,1408,792)
x.drawImage(c,512,0,1408,792)

Jan 2 2018 4:35 AM UTC

}// 140/140

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u/iverjo

Old school vibes

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singridpy

remix of d/5572 by u/singridpy

function u(t) {

c.width=2e3;v='jaumina';for(i=v.length;i--;)x.font=70+S(t*5)*20+'px Arial',x.fillText(v[i],i*69,540+S(t*9+i)*20)

Jan 5 2018 12:09 PM UTC

}// 112/140

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singridpy

remix of d/5571 by u/singridpy

function u(t) {

c.width=2e3;v='ja'umina';for(i=v.length;i--;)x.font=70+S(t*5)*20+'px Arial',x.fillText(v[i],i*69,540+S(t*9+i)*20)

Jan 5 2018 12:09 PM UTC

}// 113/140

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singridpy

function u(t) {

c.width=2e3;v='viernes marginales';for(i=v.length;i--;)x.font=70+S(t*5)*20+'px Arial',x.fillText(v[i],i*69,540+S(t*9+i)*20)

Jan 5 2018 12:01 PM UTC

}// 123/140

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pedro

function u(t) {

α=200;c.width=α*2;τ=Math.PI*2;x.font="36px A";x.fillText(['👌','👍','👌','👍','👌','👍','👌','👍'][(t|0)%8],α+C(t)*70,50+70+S(t)*70);

Jan 3 2018 11:54 AM UTC

}// 125/140

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u/crimbles

89 characters: α=200;c.width=α*2;x.font="36px A";x.fillText(['👌','👍'][(t|0)%2],α+C(t)*70,120+S(t)*70);

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sandromiccoli

function u(t) {

x.fillStyle=R(0,0,0,0.9);for(i=0;i<1920;i++)x.fillRect(i*2+T(t/1000+T(i)*100),t*10^519,1,C(t+i)*100^S(100))

Jan 4 2018 11:40 AM UTC

}// 108/140

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ClancyW

function u(t) {

t*=3
l=255
c.width=1920
x.fillStyle=R(S(t)*l,C(t)*l,T(t)*l,1)
for(i=0;i<10;i++)x.fillRect(i*99+t%11*300-1100,500+C(t)*120,50,(C(t)+1)*72+20)

Jan 5 2018 10:43 AM UTC

}// 140/140

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Bugsy

remix of d/5108 by u/Bugsy

function u(t) {

c.width+=i=0;h=400;for(;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(~~a*(w=a*h-h)*C(j)+960,(~~a?h:a*h)*(S(i)+2)+C(i)+w*S(j)/4-200,2,2)

Jan 1 2018 11:37 PM UTC

}// 137/140

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If I'm being honest, I have *no clue* what I did here, but it looks cool, so I'm posting the remix anyways

u/joeytwiddle

:D
u/rhys5584

Very nice

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pallivan

remix of d/5321 by u/hoplite

function u(t) {

i=c.width=100;for(;i--;)for(k=70;k--;)A=t=>(S(i)*S(k/t*i/t)+T(t)*C(i))*255,x.fillStyle=R(A(i),A(t*k),A(t)),x.fillRect(i,k,1,1)

Jan 3 2018 7:59 PM UTC

}// 126/140

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u/joeytwiddle

#horrible #rgb

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morton

function u(t) {

a=128;b=256;c=Math.floor;s=c(t*10);r=t%14;x.fillStyle=R((s*367+92)%b,(s*572)%b,(s*936)%b);x.fillRect((a*c(r*10))%1920,c(r*10*a/1920)*a,a,a)

Jan 4 2018 9:35 AM UTC

}// 139/140

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u/iverjo

Nice algorithm for generating many different colors. This is the kind of color set you could use when plotting many different variables in the same plot.