Top dweets by u/pythech

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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pythech

function u(t) {

with(x)for(i=200;i--;fillRect(i*9,!fillText("😁",i%9*200,i*30),9,2e3))fillStyle=`hsl(39,80%,${Math.abs((i+t*60)%62-31)*2.8}%)`,font="5em x"

Jun 6 2018 8:09 PM UTC

}// 138/140

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based on "swimming fish optical illusion"

u/pythech

works with Apple emojis, probably doesn't work with other devices
u/S.T.L.K.R.

STARE AT IT FOR 10 SECONDS
u/iverjo

#opticalillusion

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pythech

remix of d/8301 by u/pythech

function u(t) {

with(x)for(c.width|=i=16;--i;)for(j=9;--j;m=T(t/128*i*j)*64,fillStyle=`hsla(${m},89%,50%,.9)`,arc(i*120+m,m+120*j,99,0,9),fill())beginPath()

May 29 2018 7:18 PM UTC

}// 140/140

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pythech

function u(t) {

c.width=1920
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects
setStatsVisibility(1)
frame^=64

May 29 2018 2:49 PM UTC

}// 124/140

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u/lionleaf

#default #glitchy
u/Galaxtone

Since theres more in this one: #glitch

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pythech

remix of d/8710 by u/nrfenner

function u(t) {

with(x)beginPath(f=(a,b)=>x.lineTo(a/2,b/2+540)),a[p]=1,r++,s=(p<r|a[p-r]|0)*r-r/2,f(p,0),f(p+s,s),f(p=p+s*2,0),stroke()}x.r=x.p=0;x.a=[];{

Jun 24 2018 2:54 AM UTC

}// 139/140

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pythech

remix of d/8693 by u/pythech

function u(t) {

c.width|=0
t/=3
with(x)for(i=1e3;i--;fill(),fillStyle=k?'#fff':R())beginPath(k=i%2),arc(60*(i>>1)-t*222,500+400*S(i*t/10),200,0,9)

Jun 22 2018 4:13 AM UTC

}// 130/140

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#waitforit

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pythech

remix of d/8691 by u/pythech

function u(t) {

c.width|=0
with(x)for(i=32;i--;fill(),fillStyle=k?'#fff':R())beginPath(k=i%2),arc(k*130+200*(i>>1),500+k*160+300*C(i*t)*S(t),200,0,9)

Jun 22 2018 3:54 AM UTC

}// 133/140

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pythech

function u(t) {

c.width|=0
with(x)for(i=6;i--;fill(),fillStyle=k?'#fff':R())beginPath(k=i%2),arc(420+S(z=1.2**t+i+t)*k*50+500*(i>>1),500+50*C(z)*k,200,0,9)

Jun 20 2018 4:54 PM UTC

}// 139/140

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pythech

function u(t) {

c.width|=0
with(x)for(i=3;i--;stroke())beginPath(lineWidth=r=200*C(t/2+3.14)+300),arc(650+250*i,700-i%2*434,r/2,z=i*2.095,5.235+z)

Jun 17 2018 8:43 PM UTC

}// 130/140

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Imaginary Triangle

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pythech

remix of d/8575 by u/New_Core

function u(t) {

with(x)for(b=c.width|=i=40;i--;fill())ellipse(i*199%b+99*S(a=t+i),1200-a*i*20%1300,77,99,0,!beginPath(fillStyle=`hsl(${i*i},99%,50%,.9)`),9)

Jun 13 2018 1:26 AM UTC

}// 140/140

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added transparency, hsl trick doesn't work on Safari it seems

u/joeytwiddle

Instead of hsl(...) you can use hsla(... which will work in Safari
u/pythech

yeah but then you'll exceed the character limit, oh well
u/pythech

the other browsers silently accept the 4th parameter when they should not. That's a bit trickery for me, or at least that's what I meant. I could phrase it a better it seems, thanks for helping anyway, my bad :D

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pythech

remix of d/8528 by u/BirdsTweetCodersDweet

function u(t) {

for(i=2;i--;x.fill())x.beginPath(x.fillStyle=R(i?a=S(t*2)*129+129:0,0,i||a))|x.arc(960+80*S(i?π=t*5:n),540+80*C(i?n=π+3:π),80-30*S(t*8),0,7)

Jun 11 2018 12:32 AM UTC

}// 140/140

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golfed version of a=S(t*2) variation, which was mentioned under the comments by OP

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