Dweets awesomed by u/Ameo

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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icecuber

function u(t) {

v=t-9;m=t%.8-.4;r=m*m*12+3.7;r^4?r=r+.3|0:0;r=t<5.6?r*50:v<1?72:v<5.6?r*20:v<7.3?-67/C(t):x;x.fillRect(960-S(v)*r,(v<1?300:645)-C(v)*r,9,23)

May 19 2016 11:56 PM UTC

}// 140/140

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Show more comments…
u/lionleaf

Crazy impressive!
u/iverjo

Wicked!
u/lionleaf

How did you do that?!
u/stiaje

Outrageous!
u/iverjo

This is still like black magic to me. It needs to be explained in a blog post or something.
u/lionleaf

+1 for a blog post!
u/ocasta181

bump!
u/iverjo

For the sake of context: This dweet draws the logo of Hackerspace NTNU https://hackerspace-ntnu.no/
u/lionleaf

#logo
u/Lazy1337

#witchcraft

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iverjo

function u(t) {

X=960+290*C(t),Y=440+290*S(t),a=t*2,d=190;for(i=9;i--;)x.beginPath(),x.moveTo(X,Y),X-=d*S(a),Y-=d*C(a),x.lineTo(X,Y),d*=.5,x.stroke(),a+=.5

May 6 2016 10:43 PM UTC

}// 139/140

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chunnoo

function u(t) {

c.width=1920;for(i=-2;i<2;i+=.05)for(j=-4;j<4;j+=.05)1/(j*j+i*i)+1/((j-t%12+6)*(j-t%12+6)+i*i)>1?x.fillRect(j*240+960,i*240+540,12,12):0;

Apr 28 2016 1:35 PM UTC

}// 137/140

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u/Froff

This is probably my favorite of all the dweets on here
u/hamptonio

Very original, nice job.
u/FireFly

Sweet, metaballs!
u/iverjo

#metaballs
u/katkip

#cell
u/katkip

#physics

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icecuber

function u(t) {

c.width=192;A=Math.abs;Y=A(t*99%176-88);X=A(t*139%376-188);x.F=x.fillRect;x.F(X,Y+7,3,3);x.F(187,Y+C(X/39)*29,5,20);x.F(0,Y-S(X/29)*22,5,20)

Apr 24 2016 12:39 PM UTC

}// 140/140

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u/lionleaf

I'd love a blog post explaining how you approached creating this one!
u/iverjo

+1
u/SpecialAgent

+1
u/FireFly

I love this one—the movement doesn't really feel all that artificial despite being so. Hats off for figuring out how to get the pads to that :)
u/dh7

+1 very well done !!!
u/joeytwiddle

Amazing. Looks so real. Some handy techniques in here too :)
u/donbright

genius
u/TheGreatRambler

How do you do that under 140 chars?
u/lionleaf

#pong
u/lionleaf

#game
u/joeytwiddle

#tribute
u/Lazy1337

#witchcraft
u/vain

incredible - great work

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icecuber

function u(t) {

c.width=1920;for(i=24;i--;)for(j=24;j--;)t+=1.7,s=S(t)*((j+i&1)*2-1),x.setTransform(C(t),s,-s,C(t),i*99,j%12*99),x.fillRect(-9,-49,19,99)

Apr 20 2016 4:54 PM UTC

}// 137/140

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u/lionleaf

Try following the "wave" with your eyes!
u/innovati

This is amazing!
u/vain

amazing and beautiful effect. Nice tricky illusion

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icecuber

function u(t) {

t?i++:i=0;for(j=1080;j--;){a=b=0;k=35;for(;k--&&a*a+b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillRect(i,j,1,S(k/9))}

Apr 13 2016 1:46 PM UTC

}// 122/140

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u/iverjo

115 bytes: for(j=1080;j--;a=b=0){for(k=35;k--&&a*a+b*b<4;a=y)y=a*a-b*b+t*60/540-2,b=2*a*b+j/540-1;x.fillRect(t*60,j,1,S(k/9))}
u/iverjo

Here's one that draws faster: for(i=4;i--;){for(j=1080;j--;a=b=0){for(k=35;k--&&a*a+b*b<4;a=y,l=t*240+i)y=a*a-b*b+l/540-2,b=2*a*b+j/540-1;x.fillRect(l,j,1,S(k/9))}}
u/iverjo

Nvm, they depend on various variables being defined. I was fooled.
u/myJS

How about colors? t?i++:i=0;for(j=1080;j--;){a=b=0;k=35;for(;k--&&a*a+b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillStyle=R(k,j,i);x.fillRect(i,j,1,S(k/9))}
u/sfz

Nice enhancement myJS!
u/lionleaf

#scanline #slow_render #fractal #fractals

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iverjo

function u(t) {

c.width=2e3;for(i=8e3;i--;)p=3*t+i/9e3+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(999+149*S(p)+790*S(t+i/9e3+i%3*4.5),i/6-2,149*d,2/(d+1))

Feb 21 2016 8:54 PM UTC

}// 132/140

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Twisters dancing through each other

u/iverjo

#twister

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