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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Current theme challenge: #Opposites

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robbyg

remix of d/7417 by u/robbyg

function u(t) {

R=Math.random,t||(p='m 960 540')
x.lineWidth=3
x.stroke(new Path2D(p+=[['h','v'][~~(R()*2)],20*(R()>.5?1:-1)].join(' ')))

May 21 2018 9:28 PM UTC

}// 121/140

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robbyg

function u(t) {

t||(p='m 960 540',d=0);x.stroke(new Path2D(p+=['l',C(d+=.1)*t,S(d)*t].join(' ')))

Mar 22 2018 7:47 PM UTC

}// 81/140

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My first look at Path2D.

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robbyg

function u(t) {

P=Math.PI;for(w=i=c.width=2e3;i>0;i-=2)z=i/P+t,b=S(z)*P,x.fillRect(w/2+(C(z)*w/2),i%1080,8-b,8-b)

Jan 3 2018 12:38 AM UTC

}// 97/140

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robbyg

function u(t) {

w=a=1920,h=1080;while(a--){x.translate(w/2,h/2);x.rotate(t);x.translate(-w/2,-h/2);z=T(a)*99;x.fillStyle=R(z,0,0,0.2);x.fillRect(a,0,1,h)}

Dec 28 2017 5:35 PM UTC

}// 138/140

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u/Xen

nice

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robbyg

remix of d/22586 by u/contone

function u(t) {

for(c.width=i=2e3;i--;x.fillRect(960+S(u=i/63)*900,C(t-u/7)*400+550,20,50))x.fillStyle=`hsl(${i},99%,50%)`

Apr 22 2021 9:18 PM UTC

}// 106/140

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Quick play

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robbyg

remix of d/22367 by u/magna

function u(t) {

c.width|=0;for(i=3e3;i--;x.fillRect(X*30+Y%2*15,Y*30,s,s))X=i&63,Y=i>>6,s=S(t+(X-32)*(Y-18)/99)*20

Apr 6 2021 4:59 PM UTC

}// 98/140

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squares for more speed

u/magna

Centered the squares but then also rotated them by PI/4: d/22373

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robbyg

function u(t) {

for(Y=i=45;Y--;)for(X=80;X--;x.fillRect(X*24,Y*24,24,24))x.fillStyle=X&Y&t*3?R(++i%200):'#fff'

Oct 21 2020 9:29 PM UTC

}// 94/140

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Just playing.

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robbyg

remix of d/19705 by u/robbyg

function u(t) {

t||(X=48,Y=27)
S=Math.random(),S>.75?X++:S>.5?X--:S>.25?Y++:Y--
X=(X+96)%96,Y=(Y+54)%54
x.fillStyle=R(t*60%255)
x.fillRect(X*20,Y*20,16,16)

Aug 19 2020 1:59 PM UTC

}// 139/140

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Limiting the drunkard's colors to keep him from wandering off the page.

u/asciislinger

Sweet! Nice one.

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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/15750 by u/robbyg

function u(t) {

for(Y=13;Y--;)for(X=12;X--;)x.fillStyle=`hsl(${(X+Y*3)*66-t*33},70%,60%`,x.fill(new Path2D(`M${X*180-30} ${Y*90-45}l90,45,l-90,45l-90-45z`))

Sep 20 2019 6:56 PM UTC

}// 140/140

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Minus wiggles, plus colors

u/robbyg

#path2d

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