Dweets awesomed by u/greentec

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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iverjo

remix of d/387 by u/iverjo

function u(t) {

for(w=i=955;i--;)x.fillStyle=R(a=w*!i,a,a,.1+i),x.fillRect(!a*(w+w*S(d=i/42)*S(b=42*i+t)),!a*w*(C(d)+T(t/9+d)),s=18/(S(d)*S(b+4.7)+2)+8*a,s)

Aug 1 2016 12:54 AM UTC

}// 140/140

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iverjo

remix of d/387 by u/iverjo

function u(t) {

for(i=1e3;i--;)x.fillStyle=R(a=255*!i,a,a,.05+i),x.fillRect(!a*(960+800*S(b=i/42)*S(i%T(t+b)+t)),!a*(540+460*C(b)),s=19/(S(b)*S(t)+2)+8*a,s)

Jul 31 2016 11:50 PM UTC

}// 140/140

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A combination of http://dweet.dwitter.net/id/387?autoplay=1 and http://dweet.dwitter.net/id/385?autoplay=1

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iverjo

remix of d/183 by u/chunnoo

function u(t) {

t++;x.beginPath();r=128*t;w=960;h=540;p=24*Math.PI*t+t;q=p/60%t;x.moveTo(r*C(p-q)+w,r*S(p-q)+h);x.lineTo(r*C(p)+w,r*S(p)+h);x.stroke()

Jul 29 2016 5:14 PM UTC

}// 134/140

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chet

remix of d/369 by u/chet

function u(t) {

c.width=i=255;a=(z,Y)=>{for(X=25;X--;){x.fillStyle=R(i-7*X,z*2,-z*2);x.fillRect(X+z+i/2,Y,1,i)}};for(Y=i;Y>179;Y--)a(C(-8*t+Y*.1)*Y*.4,i-Y)

Jul 25 2016 2:36 PM UTC

}// 139/140

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maraoz

remix of d/356 by u/maraoz

function u(t) {

c.width=1920;function f(y){return Math.sqrt(y)/2*C(y*t)*S(y)*(S(C(t/2))+1)};for(i=0;i<400;i++){x.fillRect(i*5,540+f(i/30.8)*200,8,8)}

Jul 24 2016 4:22 AM UTC

}// 133/140

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If you'repatient you'll encounter some interesting patterns

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iverjo

function u(t) {

for(i=8e3;i--;)s=149/(i+99),c=S(8e4*s),x.fillStyle=R(9,99+49*c,29),x.fillRect(2e3*(T(i/9)+s*t)%2e3,2e3*s,99*s,99*s)

Jul 22 2016 11:39 PM UTC

}// 115/140

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#grass

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iverjo

function u(t) {

w=c.width=300;x.fillRect(0,87,w,3);x.font='49px A';for(i=7;i--;)x.fillText(String.fromCharCode(55357,56989-(i?0:27)),310-t%4*210+i*46,90)

Jul 22 2016 8:54 PM UTC

}// 137/140

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Choo choo

u/sigveseb

Looks very different on different platforms, but hella creative! Nice ^^
u/iverjo

Yeah, it seems that it works correctly only in FF, Opera and Chrome on Windows. Thanks :)
u/iverjo

#train

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iverjo

function u(t) {

c.width=960;for(i=20;i--;)for(j=12;j--;)x.beginPath(),x.arc(50*i-9*S(A=4*t+i*C(t/8)*.6+j*S(t/8)*.4),50*j+9*C(A),19+C(A)/.4,0,7),x.fill()

Jul 22 2016 1:34 PM UTC

}// 136/140

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Inspired by http://dweet.dwitter.net/id/322?autoplay=1

u/iverjo

#dots

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iverjo

function u(t) {

r=Math.random;if(t<22)for(i=8e3;i--;)X=2e3*r(),x.fillStyle=R(c=99+129*(S(X/399)+1)*r(),c,c),x.fillRect(X,1080*r(),3*T(i)*r(),r()/(t/2+1))

Jul 22 2016 12:45 PM UTC

}// 137/140

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Brushed aluminium

u/greentec

metal! yeah
u/sigveseb

Now do rock :D
u/sigveseb

\m/
u/iverjo

#texture

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Catman

function u(t) {

f=Math.floor(t);c.width=w=200;v=120;x.fillStyle=R(0,205,0);for(i=9;i--;)for(j=4;j--;)x.fillRect(i*9+(t*v%v-v/2)*(-2*(f%2-.5))+v/2,6*j+f,6,4)

Jul 22 2016 10:29 AM UTC

}// 140/140

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First Space Invaders attempt!

u/Catman

c.width=200;v=120;x.fillStyle=R(0,w+5,0);for(i=9;i--;)for(j=4;j--;)x.fillRect(i*9+(t*v%v-v/2)*(-2*(~~t%2-.5))+v/2,6*j+~~t,6,4)
u/Catman

Less verbose thanks to elrod
u/rodrigo.siqueira

#invaders

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