Top dweets by u/Blacklink

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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Blacklink

function u(t) {

c.height=1080
w=999-Math.abs(600*S(t*3))
u=600*t%1920
x.font="15em s"
x.rotate(r=9*t)
x.fillText("⚽️",w*S(r)+u*C(-r)-105,w*C(r)+u*S(-r)+105)

Nov 15 2018 10:47 AM UTC

}// 140/140

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Boing. This took me longer to make than I'd like to admit lol

u/joeytwiddle

#bounce #football
u/joeytwiddle

Yeah you had to position it to undo the rotate. Non-trivial!

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Blacklink

function u(t) {

a=t*.5^1
for(z=i=c.height^=0;i>0;i--){x.fillStyle=R(m=i/z*255,m,99);x.fillRect(S(t+i*a)*886+886,i,150,1)}x.font='99px f';x.fillText(a,99,99)

Jan 17 2018 10:18 AM UTC

}// 140/140

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Updated with better colours and way to change the speed, standard of .5; still counts weird but that's okay

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Blacklink

function u(t) {

c.width=1920
for(p=0;p<50*t;p++){d=10*p/t
x.fillRect(d*C(p)+960,d*S(p)+540,20,20)
}

Apr 3 2022 9:59 PM UTC

}// 83/140

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Simple spiral

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Blacklink

function u(t) {

c.width=1920
for(var X=0;X<1920;X+=10){
for(var Y=0;Y<1080;Y+=10){x.fillStyle=R(((X+t*100)/(t^4))^((Y+t*100)/(t^4)))
x.fillRect(X,Y,10,10)}}

Sep 12 2019 10:19 AM UTC

}// 140/140

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Baby's first fractal

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Blacklink

function u(t) {

c.width=w=1920
x.lineWidth=80+S(t)*30
for(var i=0;i<15;i++){
x.beginPath()
x.arc(w/2,540,50+i*75,2*t,2*t+Math.PI,i%2)
x.stroke()
}

Jul 1 2019 8:57 PM UTC

}// 130/140

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Just a simple little plaything

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Blacklink

function u(t) {

c.width|=0;for(var i=0;i<19;i++){for(var j=0;j<11;j++){var s=0.5+0.5*S(t+i+j);x.fillRect(100*i+50*(1-s),100*j+50*(1-s),100*s,100*s)}}//lmao

Mar 30 2018 1:23 PM UTC

}// 140/140

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u/iverjo

#halftone
u/geb

#background

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Blacklink

remix of d/14875 by u/Blacklink

function u(t) {

c.height=h=999
x.lineWidth=35
p=S(.1*t)+1
k=Math.PI
for(i=0;i<50;i++){x.beginPath()
q=k*2/p*(i%p)
x.arc(h,h/2,i*45,q,q+k*2/p)
x.stroke()}

Jul 1 2019 9:45 PM UTC

}// 137/140

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didn't realise very obvious character saving so made it look a bit nicer

u/Xen

yup, still some golf on this one,.. but also it has a nice style, join discord dwitter chat if you wish and we can crush this all the way down so you can build it back up and add more ;), come shout me.
u/Blacklink

I'll consider that when I have some spare time on my hands!

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Blacklink

function u(t) {

a=t^1
for(z=i=c.height^=0;i>0;i--){x.fillStyle=R(m=i/z*255,m,0);x.fillRect(S(t+i*a)*886+886,i,150,1)}x.font='99px f';x.fillText(a,99,99)

Jan 17 2018 10:15 AM UTC

}// 136/140

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had to do t^1 instead of Math.Round cuz character limit so it counts weirdly but does go through all of them

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