Dweets by u/BackendForth

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.

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Current theme challenge: #Opposites

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BackendForth

function u(t) {

if(!t)p=960,q=5,n=1,r=9
p+=C(n)*r
q+=S(n)*r
x.lineTo(p,q)
x.stroke()
n+=.1
r+=.01
if(p<0||p>1920||q<0||q>1080)n-=3.14

Apr 25 2021 11:54 AM UTC

}// 117/140

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BackendForth

function u(t) {

x.globalCompositeOperation="xor"
if(!t)a=b=9,d=0
x.fillRect(a-d/2,b-d/2,d,d)
d+=t
if(d>t*9)d=0,a=Math.random()*1920,b=Math.random()*1080

Apr 21 2021 12:31 PM UTC

}// 136/140

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What my phone sees when I try to scan a QR code

u/lars-erik

Nice. Could you the other "don't xor", I wonder. Could make for a less chaotic effect when it grows.
u/DataMeta

#waitforit #keepsongiving

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BackendForth

function u(t) {

c.width|=0
f=(n)=>960+99*C(n/9)+99*C(n)
g=(n)=>540+99*S(n/9)+99*S(n)
for(i=19;i--;x.stroke())x.moveTo(f(b=t*i),g(b)),x.lineTo(f(a=b+t),g(a))

Apr 20 2021 7:15 PM UTC

}// 140/140

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u/lars-erik

All the beautiful patterns in one. :D Love it!

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BackendForth

function u(t) {

c.width=96
x.lineWidth=9
x.miterLimit=1
v=(a,b)=>x.lineTo(a+65,b+27)
v(0,0)
v(g=C(t)*20,h=S(t)*20)
v(g-(1999-h*h)**.5,0)
v(-99,0)
x.stroke()

Apr 20 2021 2:45 AM UTC

}// 140/140

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Cranking away . . .

u/erin

username fits

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BackendForth

function u(t) {

for(c.width|=i=0;i<9;i++)
for(j=1080;j-=4;)
x.fillRect(i*240,j,t*9*S(t*i+j/t),4)

Apr 18 2021 12:38 PM UTC

}// 80/140

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u/Xen

#waitforit love it!
u/DataMeta

#keepsongiving cool!

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BackendForth

function u(t) {

c.width|=0
for(i=2;i--;)
for(j=0;j<6.28;j+=6.28/9)
{w=99/(S(t+j)+2)
x.fillRect(i*960+400+C(t+j)*400+w*i,540-w/2-S(t*9+j)*99,w,w)
}

Apr 5 2021 6:22 PM UTC

}// 130/140

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#stereograph Cross your eyes until the images are on top of each other for a 3d effect!

u/taupelink

whoa
u/magna

Nice! I relax my eyes (i.e. as if looking at a distance) instead of crossing. Then the smallar squares appear closer, not farther away. But amazing regardless! More of this technique please!

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BackendForth

function u(t) {

if(!t)x.translate(590,540),a=0
x.rotate(a)
a+=(Math.random()-.5-a/3)
x.fillRect(0,0,11,8)
x.translate(9,0)

Apr 3 2021 2:42 AM UTC

}// 106/140

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doodling

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BackendForth

function u(t) {

c.width|=0
for(i=1920;i--;)
x.fillRect(i,540+S(i/399+t)*350+S(i/9)*S(t)*t*9*.9999**((i-t*299%2490+300)**2),1,99)

Mar 31 2021 12:37 PM UTC

}// 112/140

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BackendForth

remix of d/22153 by u/BackendForth

function u(t) {

for(c.width|=0,q=1-2**-t,i=a=999;i--;)x.fillRect((i+t*q)*a%1920,i**i%a,9,9)
x.translate(a,k=540)
x.rotate(2+q)
x.fillRect(-k-t*99,0,a,150)

Mar 29 2021 4:25 PM UTC

}// 138/140

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Free at last! #suez #evergiven

u/erin

i'm sad, it was fun it being stuck
u/BackendForth

It was meme whose greatness was rivaled only by its cost :P

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BackendForth

function u(t) {

x.fillRect(0,0,1920,1080)
for(i=q=960;i--;){a=i**9%1919-q
b=(t+i)*99%1080-540
if(a*C(t)+b*S(t)>(a*a+b*b)**.5*.99)x.clearRect(a+q,b+540,5,9)}

Mar 27 2021 2:30 PM UTC

}// 140/140

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