Top 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

function u(t) {

w=c.width=1920,h=1080,d=30;for(a=0;a<w;a++){b=t*a;x.fillStyle=R(b%255,b/3%200,b*2%180,1);x.fillRect(w/2+C(a/d*t)*a,h/2+S(a/d*t)*a,d/4,d/4);}

Dec 27 2017 10:05 PM UTC

}// 140/140

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robbyg

remix of d/26572 by u/UEZ

function u(t) {

x.fillRect(i=0,0,h=1920,v=1080);while(i<9999)x.clearRect(h/2*(1+S(++i)+t*(2+S(i*i)))%h,(v/2*(1+S(i**3)+t*S(i**4)))%v,3,3)

Dec 12 2022 6:54 PM UTC

}// 121/140

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#snow #storm golfed down a bit

u/robbyg

115: x.fillRect(i=0,0,h=1920,h);while(i<1e4)x.clearRect(h/2*(1+S(++i)+t*(2+S(i*i)))%h,(h/2*(1+S(i**3)+t*S(i**4)))%h,3,3)
u/Xen

113: i<h ?

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robbyg

remix of d/17654 by u/Cloud

function u(t) {

for(i=5;i--;)x.lineTo(S(b=i*Math.PI/2+C(t*6))*200-300+t*500,C(b)*200+540+S(t*4)*200),x.stroke()

Feb 17 2020 10:55 PM UTC

}// 95/140

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Snakeskin

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robbyg

function u(t) {

c.width|=0,x.scale(12,50),x.fillText('♜♜♜♜♜♜♜♜♜',34+S(t)*22,13)

Jan 16 2020 8:39 PM UTC

}// 63/140

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#castle #default :D

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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/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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robbyg

remix of d/15001 by u/Nosferatu

function u(t) {

c.width|=a=n=>x.fillRect(S(z=i*n*.002)*i/8+960,C(z)*i/8+540,5,5)
x.fillStyle=`hsl(${t*99},60%,40%)`
for(i=4e3;i--;)a(t+199),a(t+39),a(t+99)

Jul 18 2019 1:24 PM UTC

}// 139/140

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Golfed and colorized.

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robbyg

function u(t) {

B=(X,Y,A,L,h,v)=>L>7&&(x.moveTo(X,Y),x.lineTo(h=X+C(A)*L,v=Y-S(A)*L),B(h,v,A-.3,L*.7),B(h,v,A+.3,L*.7))
t||B(960,1e3,1.57,300)
x.stroke()

Feb 12 2019 4:26 PM UTC

}// 137/140

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#recursive #tree

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robbyg

function u(t) {

s=44;for(i=1100;i--;)x.fillStyle=R(r=(T(i<<t*5)+1)*128,r,r),x.fillRect(i%s*s,(i/s|0)*s,s,s)

Jul 19 2018 5:25 PM UTC

}// 91/140

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