Dweets awesomed by u/tobias

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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Agnes

remix of d/9088 by u/firegodjr

function u(t) {

F=n=>C(n)^T(n/t|0);x.drawImage(c,0,l=9);for(j=214;j--;)x.fillStyle='#'+F(j+t*60^-t*60+j).toString(16).padStart(3,'0'),x.fillRect(j*l,0,l,l)

Aug 4 2018 10:24 AM UTC

}// 139/140

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Fractal Metropolis 1972

Show more comments…
u/katkip

Wow
u/joeytwiddle

Looks so cool and cyber, then come silly green smiley faces
u/katkip

That actually looks like a GOL
u/iverjo

Wow! Interestingly, this is the result of a long remix chain
u/fujimotos

The loop starts here: d/8940
u/donbright

i want a sweater like this
u/tomxor

I love this one!

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Agnes

remix of d/8945 by u/firegodjr

function u(t) {

F=n=>{return C(n)*C(n)+S(n)*S(n)<1}
x.drawImage(c,0,l=10)
for(j=214;j--;)x.fillStyle=F(j^t*60)?"#0f0":"#000",x.fillRect(j*l,0,l,l)

Jul 28 2018 8:15 PM UTC

}// 130/140

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Visualising numbers for which sin(x)*sin(x) + cos(x)*cos(x) < 1.

u/donbright

wait wait wait wait wait.... sin^2 + cos^2 = 1. im so confused. is this about the imprecision of floating point arithmetic?
u/donbright

this is absolutely fascinating... set it ==1 or >1 gives different patterns.
u/donbright

also fun... return S(n)/C(n)==T(n)

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robbyg

function u(t) {

for(j=20,h=96;h--;)for(v=54;v--;)x.fillStyle=R(z=(T(t-h*v)+1)*j,z/2,z*4),x.fillRect(h*j,v*j,j,j)

Jul 16 2018 6:34 PM UTC

}// 96/140

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u/DataMeta

I love it!
u/aleamb

awesome!

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tobias

function u(t) {

r=Math.random
x.fillStyle=`hsl(${r()*360},90%,77%)`
x.filter="blur(1px)"
x.drawImage(c,0,0)
x.filter="none"
x.fillRect(r()*2e3,r()*1e3,1,1)

Jul 16 2018 5:35 PM UTC

}// 139/140

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u/robbyg

120 chars for more room to play: r=Math.random;with(x)fillStyle=hsl(${r()*360},90%,77%,filter='blur(1px',fillRect(r()*2e3,r()*1e3,1,1),drawImage(c,0,0)
u/micahcowan

(Fixed formatting) r=Math.random;with(x)fillStyle=`hsl(${r()*360},90%,77%`,filter='blur(1px',fillRect(r()*2e3,r()*1e3,1,1),drawImage(c,0,0)
u/elochimsiemasz

Duuude

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tobias

function u(t) {

if(!t)y=w=960,z=h=710
for(i=0;i++<99;)C=C*3%2e9||1,x.fillRect(y=y/2+(w+606*(C%3-1))/2,z=z/2+(h-(++C%3+~C%3)*350)/2,1,1)

Jul 15 2018 7:23 PM UTC

}// 119/140

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u/iverjo

#sierpinski

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tobias

function u(t) {

s=540;x.beginPath(c.style.background=R(x.strokeStyle=`hsl(${8*t},80%,50%)`));x.moveTo(q=S(t/9)*s+s,S(t)*s+s);x.lineTo(C(t)*s+s,q);x.stroke()

Jun 25 2018 8:22 PM UTC

}// 140/140

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u/lionleaf

#laser patterns! Looks different in fullscreen :)
u/Xen

love it
u/DataMeta

dope

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charlie.codex

function u(t) {

 z=[t,t/2]
H=(a,b)=>[1-a**2/16+b,-a]
W=(c,d)=>[c*100+960,540-d*100]
for(i=0;i<100;i++){
z=H(...z)
x.fillRect(...W(...z),5,5)}

Jun 22 2018 6:17 PM UTC

}// 125/140

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u/magna

WOW
u/loni_art

i dont know what you are doing but i love it
u/Bugsy

Damn, that's a smart approach. I might need to copy it sometime :)

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tobias

function u(t) {

for(n=95,i=0;h=0|i/43,w=i%43,i++<516;)x.setTransform(1,0,w&1?.5:-.5,1,(w>>1)*n-(h&1?49:n),h*n),x.fillStyle=R(n*S(w+h+t)),x.fillRect(0,0,n,n)

Jun 12 2018 10:48 PM UTC

}// 140/140

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tobias

function u(t) {

for(d=480,c.width=4*d,a=0;a<6.2;a+=.09)z=.7*a*t,s=d*(2+S(a)),o=540+d*C(a),x.moveTo(s,o),x.lineTo(s+d*S(z)-d*S(a),o+d*C(z)-d*C(a)),x.stroke()

Jun 11 2018 7:56 PM UTC

}// 140/140

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u/joeytwiddle

You could do ;x.stroke() for performance

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nickd3000

function u(t) {

v=160,s=20;for(i=0;i<60*v;i++)l=(i%v),m=((i/v)|0), k=v*(1+S((C(l/15)/C(m/17))+(t*4))),x.fillStyle=R(n=k+m*2,n+m,n+k),x.fillRect(l*s,m*s,s,s)

Feb 1 2018 9:02 PM UTC

}// 140/140

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field work

u/41407

Awesome! I managed to shorten it down to 129 if you want to add something to it: v=160;s=20;for(i=60*v;i--;l=(i%v))m=(i/v)|0,k=1+S(C(l/15)/C(m/17)+t*4),x.fillStyle=R(n=k*v+m*2,n+m,n+k*v),x.fillRect(l*s,m*s,s,s)

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