Dweets awesomed by u/zanella

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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Xen

function u(t) {

x.fill(x.arc(t,t,c.width=t,0,7))

May 21 2018 4:41 PM UTC

}// 32/140

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u/jick

Wow, this is really nice.

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generative-eu

function u(t) {

c.width=1920;x.lineWidth=10;for(i=0;i<40;i++){s=S(i/6);x.beginPath();x.arc(960,540,15*i,a=s*t,a+2);x.strokeStyle=R(0,0,0,.5+s/3);x.stroke()}

May 21 2018 4:23 PM UTC

}// 140/140

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jick

function u(t) {

c.width=1000;
x.font="2em courier bold";
d=0;
for(j=0;j<800;j+=30) {
 i=500+(100*S(t+(j*.51)));
 l='CAGT'[~~(d++)%4];
 x.fillText(l,i,j);
}

May 21 2018 1:20 AM UTC

}// 139/140

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u/joeytwiddle

#dna #helix

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johnbruin

function u(t) {

c.width=w=200
x.font='1cm a',x.fillText("DWITTER",0,w)
for(y=0;y<40;y++)
x.drawImage(c,0,169+y+4*S(t*5+y/6),w,1,15+15*S(t*2),y*3,w,3)

May 20 2018 9:45 PM UTC

}// 133/140

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u/Xen

love it :-)
u/joeytwiddle

Wobbly #text

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prplz

remix of d/8150 by u/prplz

function u(t) {

x.font='4em a'
r=Math.random
for(i=666;i--;x[y+C(t/2)*T&8^z+S(t/2)*T&8?'fillRect':'clearRect'](y*T,z*T,T=32,T))y=r()*66,z=r()*T

May 20 2018 1:45 PM UTC

}// 127/140

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Thanks u/jylikangas for the re-using T technique

u/Xen

nice effect, you no longer need font
u/prplz

haha oops

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sukkamehu

function u(t) {

c.width=1630
for(i=0;i<999;i++){x.fillStyle=R(i%255,i%255,255,0.5),x.fillRect(i*6.39,0,99,1000);}

May 19 2018 9:47 PM UTC

}// 97/140

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firegodjr

remix of d/8144 by u/firegodjr

function u(t) {

x.font='3em x'
r=Math.random
for(j=30;j--;)for(i=63;i--;)x.fillText('◢◣◤◥'[r()*4|0],i*32,j*32),x.fillStyle=R(l=(S(i/3)+C(j/3)+r())*128,l,l)

May 19 2018 3:19 PM UTC

}// 139/140

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Fireballs!

u/Xen

very nice style!
u/sigveseb

Cool!
u/prplz

pretty

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firegodjr

remix of d/8139 by u/firegodjr

function u(t) {

x.font='3em x'
r=Math.random
for(i=63;i--;x.fillText('◢◣◤◥'[r()*4|0],i*32,(t*5|0)*32))x.fillStyle=R(l=(S(i/6)*(T(t/2-.5))+r()-.5)*255,l,l)

May 19 2018 2:25 PM UTC

}// 138/140

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Tourghool

function u(t) {

c.width=1630
for(i=t%1;i<99;i++)x.fillRect(750-i*5+(i*C((i+10)/20)*C(t)),i*9,99+i*10,1) 
x.font="10em x"
x.fillText("🚔",740-40*C(t),525)

May 19 2018 10:11 AM UTC

}// 136/140

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firegodjr

remix of d/8105 by u/magna

function u(t) {

x.putImageData(x.getImageData(0,10,1920,1080),0,0)
for(r=i=2e3;i-=10;r+=r*t|4)x.fillText('╲╱'[r&1],i,1070)

May 15 2018 6:34 PM UTC

}// 106/140

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Continuous maze

u/magna

Yay!
u/joeytwiddle

I see a #shiny pattern which disappears when I go to fullscreen. But not on retina displays.
u/mxfh

More maze-like though. If you're lucky you get a tunnel. https://en.wikipedia.org/wiki/Truchet_tiles#…
u/mxfh

https://en.wikipedia.org/wiki/Truchet_tiles#…

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