Dweets awesomed 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

remix of d/8366 by u/pythech

function u(t) {

with(x)for(z=i=1e3;i--;t>11?fillText("debian",600,z):fillRect((r=90**(t/27)*90)*S(m=t+i/8e2)+z,C(m)*r+390,9,9))fillStyle='#d15',font="14em'"

Jun 7 2018 1:46 AM UTC

}// 140/140

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debian logo with better parameters

u/joeytwiddle

Fantastic!
u/joeytwiddle

To avoid overlap, change *90 to *60
u/aleamb

#logo

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DataMeta

function u(t) {

c.width=1920;p=Math.PI;for(i=0;i<8;i++){x.lineWidth=6;x.rotate(p)
x.arc(960,540,(Math.abs(540*C(t*i*.166))),t*Math.log(t)/p,p*t);x.stroke()}

Jun 7 2018 1:38 AM UTC

}// 140/140

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sukkamehu

remix of d/601 by u/ose

function u(t) {

t/=2
for(i=0;i<20;i++){
x.fillStyle=R(S(i*t)*255,S(i+1+t)*255,S(i+2+t)*255);
x.fillRect(i*150+100*S(t*2),(t*50),50,150);
}

Jun 6 2018 10:31 PM UTC

}// 122/140

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pythech

remix of d/8455 by u/pythech

function u(t) {

with(x)for(i=200;i--;fillRect(i*9,!fillText("👤",i%9*200,i*30),9,2e3))fillStyle=`hsl(209,33%,${Math.abs((i+t*50)%62-31)*2+9}%)`,font="9em x"

Jun 6 2018 8:50 PM UTC

}// 139/140

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works with apple emojis only

u/pythech

optical illusion, stare at it for a few seconds
u/DataMeta

cool!
u/iverjo

#opticalillusion

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pythech

remix of d/8454 by u/pythech

function u(t) {

with(x)for(i=200;i--;fillRect(i*9,!fillText("💧",i%9*200,i*30),9,2e3))fillStyle=`hsl(193,80%,${Math.abs((i+t*60)%62-31)*2.8}%)`,font="9em x"

Jun 6 2018 8:15 PM UTC

}// 139/140

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does it move?

u/pythech

optical illusion, stare at it for 10 seconds
u/iverjo

#opticalillusion

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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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firegodjr

function u(t) {

r=Math.random
for(i=y=2e3;i--;)X=r()*y,Y=r()*y/2,x.fillStyle=R(f=(S(X/240-.8)*T(X/120+(X>960?t:-t))+S(Y/200-1))*128,f,f),x.fillRect(X,Y,9,9)

Jun 6 2018 5:02 PM UTC

}// 140/140

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Tangent waves

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magna

function u(t) {

T.valueOf=Math.random
x.setTransform(T,T,T,T,T,T)
x.fillStyle=R(0,0,0,T)
x.fillRect(999,999,99,99)

Jun 6 2018 3:45 PM UTC

}// 98/140

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Proof-of-concept of using valueOf to prevent function call parenthesis (()) to save space when a function is used at least 5 times.

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veubeke

remix of d/8399 by u/veubeke

function u(t) {

d=new Date%2
for(H=a=60;a--;)for(b=H;b--;x.fillRect(a+t*60%32*H,y,2,2))y=(d?H-a:a)/2+b+(t*60>>5)*30-H,x.fillStyle=R(255-y/5,b&&(d+3)*60-b)

Jun 5 2018 9:04 PM UTC

}// 138/140

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Show more comments…
u/Xen

Love it!
u/yokljo

new Date%2 is incredible
u/lionleaf

Amazing! #maze
u/pythech

dope
u/magna

Veubeke strikes again.
u/katkip

A-maze-ing
u/katkip

#d3

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Xen

function u(t) {

x.strokeStyle='#FFF'
for(x.lineWidth=i=4;i--;x.strokeRect(X,Y,129,129))x.fillRect(X=9e2+S(2*t+i)*799,Y=5e2+C(3.3*t-i)*499,129,129)

Jun 5 2018 7:13 PM UTC

}// 130/140

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