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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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robbyg

remix of d/6638 by u/robbyg

function u(t) {

x.fillRect(0,0,i=w=1920,w)
t||(X=[...Array(w)].map(s=>Math.random()*w))
for(;z=--i%6+1;)x.clearRect(X[i]+=C(i-t),(i-z+t*z*15)%w,z,z)

Nov 14 2018 2:52 PM UTC

}// 132/140

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I always start thinking about #snow this time of year.

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robbyg

remix of d/9917 by u/THORinHOOD

function u(t) {

c.width=q=1920;for(i=q;i-=16;)x.fillStyle=`hsl(${C(t+i)*360},80%,70%`,x.fillRect(0,i,k=Math.abs(S(t)*q),8),x.fillRect(q-k,i+8,q,8)

Sep 18 2018 7:37 PM UTC

}// 130/140

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Now with rainbow!

u/Xen

nice style

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robbyg

remix of d/29396 by u/skeletonNatte

function u(t) {

c.width|=0
for(i=22;i--;)for(r=i*25,n=i*5,a=6.28/n,d=i%2||-1;n--;)x.fillRect(S(t+a*n)*r*d+955,C(t+a*n)*r+535,9,9)

Feb 3 2024 7:54 PM UTC

}// 113/140

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Spinning squares for days

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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=2304,Z=30;i--;x.fillRect(H*Z,V*Z,Z,Z))H=i%64,V=i/64|0,x.fillStyle=R(a=T(C(H)-S(V)-t*2)>0&&Math.random()>.8?255:128,0,0,.05)

Sep 17 2019 8:01 PM UTC

}// 129/140

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Lava

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robbyg

function u(t) {

t||(Z=150,V=Math.random()*5)
x.beginPath()
if(t<4.01)P=t*180|0,x.fillStyle=R(I=P/3%240,I,I),x.fill(x.ellipse(960,900-P,Z+=C(t*V),50,0,0,7))

Aug 26 2019 9:33 PM UTC

}// 139/140

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Vases, inspired by https://codepen.io/Gthibaud/pen/gOYwNPM

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robbyg

remix of d/8613 by u/robbyg

function u(t) {

c.width|=0;v=500;with(x)fillStyle='#fe0',moveTo(h=t*v%2e3,v),fill(arc(h,v,99,a=S(t*9)**2,-a))

May 2 2019 2:03 PM UTC

}// 93/140

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Golfed my previous #pacman down by 36 bytes!

u/Xen

nice! 90b: c.width|=v=500;with(x)fillStyle='#fe0',moveTo(h=t*v%2e3,v),fill(arc(h,v,v,a=S(t*9)**2,-a))

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robbyg

remix of d/12170 by u/robbyg

function u(t) {

c.width|=0
for(i=9;i--;)for(v=200;v--;)x.fillStyle=`hsl(${i*40+v+t*40},50%,50%`,x.fillRect(520+S(t+v/50)*400+i*100,440+v,50*v/150,1)

Feb 5 2019 3:47 PM UTC

}// 132/140

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Rainbow weaving perspective #default that is hopefully not derivative. :D

u/DataMeta

Smoooth
u/DataMeta

#colors

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robbyg

function u(t) {

c.width|=0
r=y=>Math.random()*y
a=i=>{for(z=500;z--;)x.fillRect(520+S(t)*400+i*100+r(50),440+r(200),r(5),r(5))}
for(i=9;i--;)a(i)

Jan 28 2019 7:16 PM UTC

}// 129/140

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Static #default

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robbyg

function u(t) {

for(s=h=60;h--;)for(v=18;v--;)x.fillStyle=`hsl(${S(t+h/6-v/9)*180},50%,50%`,x.fillRect(h*s,v*s,s,s)

Jun 21 2018 8:04 PM UTC

}// 99/140

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