Dweets awesomed by u/BriSeven

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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New_Core

remix of d/508 by u/New_Core

function u(t) {

x.beginPath();b=99;for(i=6;i--;)x.fillStyle=R(a=b*C(t)+b,t*i,a*i),x.fillRect(960+b*S(t+i),540+b*C(t+i),9,9);x.drawImage(c,-5,-3,1930,1086)

Dec 15 2016 3:06 PM UTC

}// 138/140

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lol didnt need that beginpath there, was leftover from the other one

u/New_Core

a=255;for(i=6;i--;)x.fillStyle=R(33*t%a,66*t%a,99*t%a),x.fillRect(960+a*S(t+i),540-a*C(t+i),9,9);x.drawImage(c,-5,-3,1930,1086)
u/iverjo

Very nice, and trippy af. This is the kind of thing I meant when I said I wanted to do a remix of https://www.dwitter.net/d/508
u/New_Core

#swirl

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New_Core

function u(t) {

a=t-.01;if(t<6)a=t-10;x.fillStyle=R(250,100,250);x.fillRect(1000,1079,1,1);x.drawImage(c,10*S(t),a);

Dec 2 2016 10:51 AM UTC

}// 100/140

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u/iverjo

Very nice! I made a golfed version: x.fillStyle=R(b=250,100,b);x.fillRect(b*4,1079,1,1);x.drawImage(c,10*S(t),t<6?t-10:t-.01)

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iverjo

remix of d/79 by u/iverjo

function u(t) {

c.width=960;for(i=2e3;i--;)s=7/(S(i/42)*S(2.79*i+t-1.57)+2),x.fillRect(480+460*S(i/42)*S(2.79*i+t),270+160*(C(i/42)+T(t/9+i/42)),s,s)

Jul 29 2016 12:55 AM UTC

}// 133/140

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Golfed version (120 characters): c.width=960;for(i=2e3;i--;)b=2.79*i+t,x.fillRect(480+460*S(a=i/42)*S(b),270+160*(C(a)+T(t/9+a)),s=7/(S(a)*S(b+4.7)+2),s)

u/iverjo

118 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(S(d)*S(b+4.7)+2),s)
u/iverjo

115 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(-S(d)*C(b)+2),s)
u/iverjo

114 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(S(d)*C(b)+2),s)

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iverjo

remix of d/279 by u/iverjo

function u(t) {

c.width=500;x.translate(250,95);M=1.5*S(t*2);for(j=66;j--;)x.translate(9,0),x.rotate(M*.1+(1-M)*((j+8)%21?0:2.1)),x.lineTo(0,0),x.fill()

Jul 27 2016 2:30 PM UTC

}// 136/140

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iverjo

function u(t) {

for(i=8e3;i--;)s=149/(i+400),c=S(8e3*s+t*7),x.fillStyle=R(9,c=99*c,99+c),x.fillRect(2e3*(T(i/9)+s*t)%2e3,1440-133*Math.log(i),s=99*s,s)

Jul 24 2016 11:40 PM UTC

}// 135/140

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This was my first attempt at creating a water dweet. I lated discovered that Math.log wasn't the best way to model perspective

u/iverjo

*later
u/iverjo

#water

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iverjo

function u(t) {

c.width=1920;for(i=6e3;i--;)s=1/(2100-(i+t*99)%2081),q=9e4*s*s,x.fillRect(960+2e5*s*C(i*173)-q/2,540+2e5*s*C(i*2e5)-q/2,q,q)

Jul 24 2016 2:42 PM UTC

}// 124/140

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A remake of the "Starfield" screensaver that was included in Windows 98

u/iverjo

If you watch this in fullscreen and stare at the center, your brain might be fooled into believing that you are moving
u/iverjo

#starfield #stars

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iverjo

function u(t) {

w=c.height=1e3;n=99;for(i=n;i--;)s=n/(i*6+n),x.font=s*n+'px A',x.fillText(String.fromCharCode(10052),w+1100*S(s*w*2+t/59),w*(T(i)+s*t)%1200)

Jul 22 2016 3:48 PM UTC

}// 140/140

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u/donbright

oh this is excellent
u/donbright

you can golf this by using fillText('❄',....
u/iverjo

#snow

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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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Show more comments…
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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iverjo

function u(t) {

for(i=0;i++<2e3;)s=45/(9-(t+i/99)%9),c=155+99*S(i*22),x.fillStyle=R(c*S(t),c*S(t-2),c*S(t-4)),x.fillRect(960+5*s*C(i+t),540+5*s*S(i+t),s,s)

Feb 21 2016 9:08 PM UTC

}// 139/140

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