Top dweets by u/andrea270872

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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andrea270872

remix of d/18953 by u/andrea270872

function u(t) {

K=39
u=t%9-4
v=t/9-4
x.fillStyle=`#${frame%9}005`
for(i=K;i--;)for(j=K;j--;)x.fillRect(i*K,j*K,A=3+K*C(P=44/7*(u*i/K+v*j/K))**2-S(P)**2,A)

May 26 2020 9:35 AM UTC

}// 139/140

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It's killing me... but I cannot stop looking

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andrea270872

function u(t) {

T=t%39
x.fillStyle='#000'
~~T?0:x.fillRect(0,0,2e3,1e3)
x.fillStyle='#66'+~~(T+5)
for(i=1e3;i-->0;)x.fillRect(i*2,S((i&(t*7))/49)*9*T,5,9*T)

May 19 2020 10:43 AM UTC

}// 140/140

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pseudo-stalactite 1

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andrea270872

remix of d/17573 by u/andrea270872

function u(t) {

T=t%12
T>2?0:c.width|=0
x.font=(33+T**2)+'px A'
x.fillText('🐤',900+3*S(T*240)*T**3,600+2*C(T*221)*T**3)

Feb 12 2020 12:07 PM UTC

}// 104/140

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golfed a bit more :>

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andrea270872

remix of d/17568 by u/andrea270872

function u(t) {

c.width=99
d=x.getImageData(0,0,40,30)
D=d.data
for(i=D.length;i-->0;D[K+2]=255)D[K=i*4+1]=255*S(t+i**2)
x.putImageData(d,24,9)

Feb 11 2020 7:28 PM UTC

}// 127/140

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paint by colors 2 - kryptonite

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andrea270872

function u(t) {

c.width=48
d=x.getImageData(0,0,48,27)
D=d.data
for(i=D.length;i-->0;D[K+3]=255)D[K=i*4]=S(t*i)*255
x.putImageData(d,0,0)

Feb 11 2020 7:17 PM UTC

}// 121/140

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paint by colors ;)

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andrea270872

function u(t) {

c.width=600
F=[x=>x**2,x=>1-x**3,x=>x,x=>1-x**4]
for(i=18;i-->0;x.strokeRect((t%1+i%6)*99,9+(~~(i/6)+F[i%4](t%1))*99,9,9*t%9));

Nov 25 2019 12:13 PM UTC

}// 127/140

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zum-pa-ppa

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andrea270872

function u(t) {

a=~~t
b=~~(t%1*10)
x.setTransform(A=a*9,B=b*9,-B,A,800,600)
for(i=-7;i++<7;)for(j=14;j--;x.fillRect(i,j-7,.05,.05));

Jun 27 2019 8:25 AM UTC

}// 116/140

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Sieve of Eratosthene for Gauss Integers - all white pixels left will be Gauss Primes

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andrea270872

function u(t) {

c.width|=c.onclick=_=>{T=19}
T|=0
x.fillRect(450+S(t)*400,99+5*(T>9?((T---9))**2:T?((9-T--))**2:120),50,50)
x.fillRect(S(t/2)*90,760,1e3,50)

Mar 23 2019 6:31 PM UTC

}// 140/140

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Jump on the enge! (click to jump)

u/katkip

#interactive
u/katkip

#game
u/andrea270872

I'm trying to compress a timed state machine in a single function... here T is the "clock" and the long test is the state machine function... :>

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andrea270872

function u(t) {

c.width|=0
P=t?P.map(([i,j,z,v])=>[i,j,z?z-1:99,x.fillRect(1e3+1e3*i/z,500+500*j/z,z=500/z,z)]):[]
P[99]||P.push([t*97%11-5,t*79%11-6,99])

Mar 16 2019 2:22 PM UTC

}// 138/140

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asteroid shower (still working on getting the forLoop trick from #pavel :> )

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andrea270872

function u(t) {

c.width|=r=Math.random
A=[r()-.5,r()-.5,99,1]
P=t?P.map(([i,j,z,v])=>[i,j,z?z-v:99,v,x.fillRect(1e3+z/i,500+z/j,8,8)]):[A]
P[99]||P.push(A)

Mar 15 2019 7:30 PM UTC

}// 139/140

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Remove the drain stopper

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