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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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Hedgehog

function u(t) {

x.fillStyle = R(T(t)*255,C(t)*100,S(t)*255,1)
x.fillRect(t*100,S(t)*500+540,t*100,S(t)+10)

Sep 20 2018 4:58 PM UTC

}// 91/140

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katkip

function u(t) {

eval(unescape(escape`楦⠡琩筰㵮㴾⅛⸮⹁牲慹⡮⤮步祳⠩崮獬楣攨㈩⹭慰⡩㴾ℨ渥椩⤮楮捬畤敳⠡ℱ⤦☡⠡湼籮㴽ㄩ㭺㴰㭦潲⡩㴰㭩⬫㰲ㄲ〱㬩稫⬬瀨稩㽸⹦楬汒散琨⡩┱㤰⤪㄰Ⱘ椥ㄱ㈩⨱〬㈰ⰲ〩㨰紻`.replace(/u(..)/g,"$1%")))

Sep 20 2018 4:43 PM UTC

}// 128/140

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Visualizing prime numbers looks like ancient letters! #primes #slowrender #text

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katkip

remix of d/9964 by u/katkip

function u(t) {

x.lineWidth=0.01;x.arc(960+S(t*1.9217759919284157192857918275019275876192876596565161162058752)*550,540+C(t)*550,550,2,frame/360);x.stroke()

Sep 20 2018 3:50 PM UTC

}// 140/140

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katkip

function u(t) {

c.width^=1,x.lineWidth=1;for(r=0;r<336;r++)x.arc(m=960+S(r+t)*200,n=540+C(r+t*2)*200,300,0,7);x.stroke()

Sep 20 2018 3:40 PM UTC

}// 104/140

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Example of recursion in natural spatial shapes (see that smaller second circle in the donut? )

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BalintCsala

function u(t) {

t||x.translate(960,0)
for(X=100;X--;x.fillRect(X-50,t*60+S(t)*99,2,3))x.fillStyle=X>44&&X<54&&t%1<.5?"#fff":"#000"
x.scale(s=1.005,1.0005)

Sep 20 2018 3:29 PM UTC

}// 138/140

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road

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katkip

function u(t) {

c.width*=1,x.lineWidth=9,x.arc(960,540,100,0,7),x.arc(m=960+S(t)*240,n=540+C(t)*240,50,0,7),x.arc(m+S(t*4)*90,n+C(t*4)*90,25,0,6),x.stroke()

Sep 20 2018 3:28 PM UTC

}// 140/140

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#orbit #space #gravity

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geb

remix of d/9960 by u/geb

function u(t) {

w=c.width=1920;for(i=w;i>t;i--){x.strokeStyle=`hsl(${t*i},42%,42%,.42)`
x.strokeRect(w/2+T(i-t)*i,w/3+S(i+t)*i,i%420,i%420)}

Sep 20 2018 1:36 PM UTC

}// 125/140

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geb

remix of d/9918 by u/sChiab8

function u(t) {

w=1920;for(i=w;i>t;i--){x.strokeStyle=`hsl(${t*i},42%,42%,.42)`
x.strokeRect(w/2+S(i-t)*i,w/3+T(i+t)*i,i%t,i%42)}

Sep 20 2018 1:35 PM UTC

}// 114/140

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#background

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katkip

function u(t) {

c.width=1920;
x.font='6cm x';x.fillText(document.body.innerHTML.substring(0,t*3.6*2),+960-t*3e2*2,540)

Sep 20 2018 11:36 AM UTC

}// 102/140

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That's how to write dwitter language

u/katkip

#bug it is a lot faster when you create it in a "New dweet" container
u/BalintCsala

That's not a dwitter bug, canvas sometimes defaults to 120FPS when something's really fast
u/katkip

Yeah but it delayed it and now isn't how I wanted to be

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ellisk1

function u(t) {

with(x)for(i=158;i--;beginPath(fill()))fillStyle=R(i>89?y=0:i*C(9*S(20.1*t+C(i/5)+S(t/9)*C(y=i/3))),lineTo(9,9),y),arc(9,9,14*i,a=20*t,a+.1)

Sep 20 2018 3:44 AM UTC

}// 140/140

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Planetary Weather Patterns

u/katkip

This is nice