Hot dweets by u/robbyg

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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robbyg

remix of d/17094 by u/gambit

function u(t) {

for(c.width|=i=0,x.globalCompositeOperation='xor';i<198;i++)x.fillStyle=R(i,0,i),x.fillRect(i%66*30,220*(1+i/66|0)+C(i*3+t*4)*100,27,200)

Jan 8 2020 2:47 PM UTC

}// 137/140

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robbyg

remix of d/17072 by u/tylertoomey

function u(t) {

for(c.width|=i=0;i<720;i++)x.fillStyle=`hsl(${i/2+t*60},50%,50%)`,k=i/36|0,x.fillRect(9+i%36*53+C(t*9+k)*9,9+k*53+S(t*9+i%36)*9,45,45)

Jan 6 2020 3:09 PM UTC

}// 134/140

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Golfed and then colorized because that's how I start my mornings.

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robbyg

remix of d/17061 by u/robbyg

function u(t) {

for(c.width|=j=0;j<10;x.fillStyle=R(++j*30))for(i=540;i--;)x.fillRect(Math.acos(C(t+i*.9*j/1000))*520,i*2,i/2.5,2)

Jan 3 2020 7:40 PM UTC

}// 114/140

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u/katkip

fancy

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robbyg

remix of d/17060 by u/daddydomar

function u(t) {

for(c.width|=j=0;j<10;x.fillStyle=R(++j*30))for(i=540;i--;)x.fillRect(Math.acos(S(t+i*j/1000))*600,i*2,6,6)

Jan 3 2020 3:08 PM UTC

}// 107/140

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Golfed a bit and color cause why not?

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robbyg

remix of d/16500 by u/DataMeta

function u(t) {

r=Math.random
for(j=576;j--;x.fillStyle=R(a=r()*255,a,a,.5))d=54*r(),z=30-d/2,x.fillRect(j%32*60+z,(j/32|0)*60+z,d,d)

Nov 6 2019 10:33 PM UTC

}// 117/140

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u/DataMeta

Nice one. To take it full circle (or square) to d/15628: r=Math.random,a=r(b=r(c=r(l=255))) for(j=576;j--;x.fillStyle=R(a*l,b*l,c*l,r()/5))d=64*r(),z=30-d/2,x.fillRect(j%32*60+z,(j/32|0)*60+z,d,d)
u/joeytwiddle

Mellow: r=()=>(1+S(j**5-t++*3))/2 Darker: r=()=>S(j*j-t++*3)%1

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robbyg

function u(t) {

x.fillStyle='#943'
r=Math.random
for(i=700;i--;)t||x.beginPath(x.fill(x.arc(960+C(z=r()*7)*400,540+S(z)*400,r()*9,0,7)))

Nov 4 2019 6:37 PM UTC

}// 120/140

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Coffee stain

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robbyg

function u(t) {

for(i=9,c.width=32;i--;)x.fillRect(8+C(t)*4+i*2,7,1,4)

Oct 30 2019 9:34 PM UTC

}// 54/140

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Low Res #default

u/katkip

It has already done but this is shorter
u/robbyg

I scrolled through like 8 pages of defaults first... there's only so much I can do. :)

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robbyg

remix of d/16280 by u/robbyg

function u(t) {

with(x)for(rect(0,440,a=c.width|=0,a),clip(arc(960,350,300,0,7)),i=60;i--;fillStyle=R(z=250-i*6,z/2,i*i))fillRect(0,i*40,a,25+i/2)

Oct 24 2019 2:42 PM UTC

}// 130/140

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Back up to higher res. #synthwave

u/katkip

now the circle is a circle
u/katkip

clever use of clip

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robbyg

remix of d/16261 by u/katkip

function u(t) {

with(x){beginPath(c.width=192),rect(0,52,a=200,a),clip(arc(96,35,30,0,7))
for(i=a;i--;fillStyle=R(300-i*9,70-i,i*i))fillRect(0,i*4,a,3)}

Oct 24 2019 2:45 AM UTC

}// 136/140

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Lost the background but gained a round sun. :) #synthwave

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robbyg

function u(t) {

x.fillRect(0,0,a=2e3,a)
for(i=a;i--;)x.clearRect(960+C(z=i/3-t/i*99)*i/2,540+S(z)*i/2,5,5)

Oct 11 2019 8:59 PM UTC

}// 90/140

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