Dweets awesomed by u/Feiro

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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@no_identd

remix of d/6447 by u/DirtyDan

function u(t) {

c.width=1920
for(i=b=540;i>0;i-=.5)x.beginPath(),x.ellipse(a=960+i*S(t+i*2.5),((i**2.214297)/i+i+200)/2,i/b*200,i/b*50,0,0,44/9),x.stroke()

Jan 25 2018 1:56 AM UTC

}// 139/140

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This one has an illusion built in. You can mentally switch the rotation of what you see, which you may perceive as a 3D shape.

u/@no_identd

Also, if you add x.globalCompositeOperation='xor', like u/DirtyDan did here: https://www.dwitter.net/d/6430, you can STILL mentally flip it.
u/@no_identd

Actually, I've noticed, u/DirtyDan's original of this also has this illusion built in!

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yonatan

remix of d/6402 by u/yonatan

function u(t) {

x.drawImage(c,(q=S(t)*20)-40,-60,2e3+q,1200)
for(i=0;i++<1920;x.fillRect(i,540+S(i)*9,1,1))x.fillStyle=`hsl(${t*i*i%360},99%,50%`

Jan 24 2018 2:36 AM UTC

}// 130/140

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u/donbright

fascinating

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Xen

remix of d/6352 by u/BackendForth

function u(t) {

for(c.width|=i=96;i--;)for(j=54;j--;x.fillRect(i*20,j*19,g,g))g=9+9*S(((i-t)**2+(j-49)**2)**.3+S(t)*j*Math.atan2(j*t,i-t)+t*29)

Jan 23 2018 5:05 PM UTC

}// 127/140

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yonatan

remix of d/6319 by u/veubeke

function u(t) {

for(a=_=140;--a;x.fill()){x.beginPath(x.fillStyle=R($=_*S(a+t),$+_))
for(i=3;i--;)x.lineTo(960+C(z=t+i+a)*a*9,540+S(z)*a*9)}

Jan 22 2018 1:44 PM UTC

}// 125/140

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u/Xen

nice style
u/zanella

Cool texture!
u/zanella

Cool texture!
u/zanella

Cool texture!
u/Xen

done remix d/6333
u/sigveseb

wooow stylish af!

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Xen

remix of d/6305 by u/yonatan

function u(t) {

t?0:k=X=Y=9/4
for(t<9?i=1e4:i=1;i--;X=n)x.fillRect(960+X*350,540+Y*350,.2,.2),n=S(-k*Y)+C(-k*X),Y=S(k*X)+.7*C(k*Y)

Jan 22 2018 12:40 AM UTC

}// 114/140

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Slight tweak, Shoutz 2 yonatan.

u/yonatan

nice alpha channel trick!
u/Kevjonesin

"murmuration"

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RUNIE

function u(t) {

c.width|=0
for(i=0;i<64;i++)x.fillStyle=R(b=(60-i)*(S(t*-1+i/32)+3),b,b),x.fillRect((a=1920*i/128)+S(-t+i/7)*99,a/2-48,1920-a*2,1920/1.5-a)

Jan 17 2018 1:17 AM UTC

}// 139/140

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First dweet! I call it the wibbly wobbly infinite hallway :D

Show more comments…
u/zanella

Welcome! Awesome dweet, I keep thinking that Pennywise will suddenly com running towards the camera! :D
u/sigveseb

Good shadows
u/magna

WOW
u/nystrand

Scary shadows. Very nice!
u/iverjo

Impressive
u/joeytwiddle

#tunnel
u/Cloud

Scary

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Renaud___

remix of d/1035 by u/Renaud___

function u(t) {

y=355/339;b=0;t?0:f=h=i=g=210;while(b++<50){d=1-++f/2e5;for(e=4,z=2;z<3e3;z*=4)f%z==z/2?e=1:0;i+=e;x.fillRect(g+=d*C(y*i),h-=d*S(y*i),2,2)}

Jan 16 2018 12:51 AM UTC

}// 139/140

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u/Xen

love it!
u/dogspace

very nice koch fractal
u/katkip

#koch #fractal
u/rodrigo.siqueira

#snowflake

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sj_

function u(t) {

x.beginPath();for(i=0;i<3;i++){x.arc(500+10*i*T(t/i),500+i*S(t/2)*10*t,2,0,10)}x.stroke()

Jan 16 2018 12:09 AM UTC

}// 89/140

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Reflection: bird skimming water

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DonKarlssonSan

remix of d/6078 by u/DonKarlssonSan

function u(t) {

x.strokeStyle=R(f=T(t)*99%256,f,f,1)
r=m=>Math.random()*m
x.beginPath()
for(i=99;i--;x.stroke())
x.moveTo(960,580),
x.lineTo(r(2e3),r(1e3))

Jan 15 2018 8:14 PM UTC

}// 139/140

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Xen

remix of d/6062 by u/dogspace

function u(t) {

Z=c.width=200
x.strokeStyle=R(Y=t*Z%99,C(t)*99,99-Y)
for(i=Z;i--;x.stroke())x.beginPath(),x.arc(99,50,i*(C(t/3)+1)*3,4*C(t+(Z/i)),4*S(i+t))

Jan 15 2018 5:17 PM UTC

}// 139/140

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had a little play

dwitter.net | Feiro (9294)